Merge remote-tracking branch 'upstream/MK3' into MK3_LA15

.gitignore

@@ -51,3 +51,4 @@ Firmware/Doc
 /build-env/
 /Firmware/Firmware.vcxproj
 /Firmware/Configuration_prusa_bckp.h
+/Firmware/variants/printers.h

.travis.yml

@@ -1,6 +1,13 @@
 dist: trusty
 before_install:
   - sudo apt-get install -y ninja-build
+  # Arduino IDE adds a lot of noise caused by network traffic, trying to firewall it off
+  - sudo iptables -P INPUT DROP
+  - sudo iptables -P FORWARD DROP
+  - sudo iptables -P OUTPUT ACCEPT
+  - sudo iptables -A INPUT -i lo -j ACCEPT
+  - sudo iptables -A OUTPUT -o lo -j ACCEPT
+  - sudo iptables -A INPUT -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
 script:
   - bash -x test.sh
   - cp Firmware/variants/1_75mm_MK3S-EINSy10a-E3Dv6full.h Firmware/Configuration_prusa.h

CMakeLists.txt

@@ -15,6 +15,7 @@ set(TEST_SOURCES
 	Tests/Example_test.cpp
 	Tests/Timer_test.cpp
 	Tests/AutoDeplete_test.cpp
+	Tests/PrusaStatistics_test.cpp
 	Firmware/Timer.cpp
 	Firmware/AutoDeplete.cpp
 )

Firmware/Configuration.cpp

@@ -0,0 +1,10 @@
+#include "Configuration.h"
+#include "Configuration_prusa.h"
+
+const uint16_t _nPrinterType PROGMEM=PRINTER_TYPE;
+const char _sPrinterName[] PROGMEM=PRINTER_NAME;
+const uint16_t _nPrinterMmuType PROGMEM=PRINTER_MMU_TYPE;
+const char _sPrinterMmuName[] PROGMEM=PRINTER_MMU_NAME;
+
+uint16_t nPrinterType;
+PGM_P sPrinterName;

Firmware/Configuration.h

@@ -6,15 +6,27 @@
 #define STR_HELPER(x) #x
 #define STR(x) STR_HELPER(x)
 
+//-//
+#include <avr/pgmspace.h>
+extern const uint16_t _nPrinterType;
+extern const char _sPrinterName[] PROGMEM;
+extern const uint16_t _nPrinterMmuType;
+extern const char _sPrinterMmuName[] PROGMEM;
+extern uint16_t nPrinterType;
+extern PGM_P sPrinterName;
+
 // Firmware version
-#define FW_VERSION "3.7.1"
-#define FW_COMMIT_NR   2266
+#define FW_VERSION "3.7.2"
+#define FW_COMMIT_NR   2363
 // FW_VERSION_UNKNOWN means this is an unofficial build.
 // The firmware should only be checked into github with this symbol.
 #define FW_DEV_VERSION FW_VERSION_UNKNOWN
 #define FW_REPOSITORY "Unknown"
 #define FW_VERSION_FULL FW_VERSION "-" STR(FW_COMMIT_NR)
 
+// G-code language level
+#define GCODE_LEVEL 1
+
 // Debug version has debugging enabled (the symbol DEBUG_BUILD is set).
 // The debug build may be a bit slower than the non-debug build, therefore the debug build should
 // not be shipped to a customer.

Firmware/Marlin.h

@@ -79,9 +79,9 @@ extern FILE _uartout;
 #define SERIAL_PROTOCOL_F(x,y) (MYSERIAL.print(x,y))
 #define SERIAL_PROTOCOLPGM(x) (serialprintPGM(PSTR(x)))
 #define SERIAL_PROTOCOLRPGM(x) (serialprintPGM((x)))
-#define SERIAL_PROTOCOLLN(x) (MYSERIAL.print(x),MYSERIAL.write('\n'))
-#define SERIAL_PROTOCOLLNPGM(x) (serialprintPGM(PSTR(x)),MYSERIAL.write('\n'))
-#define SERIAL_PROTOCOLLNRPGM(x) (serialprintPGM((x)),MYSERIAL.write('\n'))
+#define SERIAL_PROTOCOLLN(x) (MYSERIAL.println(x)/*,MYSERIAL.write('\n')*/)
+#define SERIAL_PROTOCOLLNPGM(x) (serialprintPGM(PSTR(x)),MYSERIAL.println()/*write('\n')*/)
+#define SERIAL_PROTOCOLLNRPGM(x) (serialprintPGM((x)),MYSERIAL.println()/*write('\n')*/)
 
 
 extern const char errormagic[] PROGMEM;
@@ -111,15 +111,9 @@ void serial_echopair_P(const char *s_P, unsigned long v);
 
 
 //Things to write to serial from Program memory. Saves 400 to 2k of RAM.
-FORCE_INLINE void serialprintPGM(const char *str)
-{
-  char ch=pgm_read_byte(str);
-  while(ch)
-  {
-    MYSERIAL.write(ch);
-    ch=pgm_read_byte(++str);
-  }
-}
+// Making this FORCE_INLINE is not a good idea when running out of FLASH
+// I'd rather skip a few CPU ticks than 5.5KB (!!) of FLASH
+void serialprintPGM(const char *str);
 
 bool is_buffer_empty();
 void get_command();
@@ -172,6 +166,17 @@ void manage_inactivity(bool ignore_stepper_queue=false);
   #define disable_z() {}
 #endif
 
+#ifdef PSU_Delta
+    void init_force_z();
+    void check_force_z();
+    #undef disable_z
+    #define disable_z() disable_force_z()
+    void disable_force_z();
+    #undef enable_z
+    #define enable_z() enable_force_z()
+    void enable_force_z();
+#endif // PSU_Delta
+
 
 
 
@@ -303,6 +308,11 @@ extern bool axis_known_position[3];
 extern int fanSpeed;
 extern int8_t lcd_change_fil_state;
 
+const char smooth1[] PROGMEM = "Smooth1";
+const char smooth2[] PROGMEM = "Smooth2";
+const char textured[] PROGMEM = "Textur1";
+const char *const defaultSheetNames[] PROGMEM = {smooth1,smooth2,textured};
+
 #ifdef TMC2130
 void homeaxis(int axis, uint8_t cnt = 1, uint8_t* pstep = 0);
 #else
@@ -323,7 +333,6 @@ extern float retract_recover_length_swap;
 
 extern uint8_t host_keepalive_interval;
 
-
 extern unsigned long starttime;
 extern unsigned long stoptime;
 extern int bowden_length[4];
@@ -393,6 +402,7 @@ extern LongTimer safetyTimer;
 
 #define PRINT_PERCENT_DONE_INIT   0xff
 #define PRINTER_ACTIVE (IS_SD_PRINTING || is_usb_printing || isPrintPaused || (custom_message_type == CustomMsg::TempCal) || saved_printing || (lcd_commands_type == LcdCommands::Layer1Cal) || card.paused || mmu_print_saved)
+
 //! Beware - mcode_in_progress is set as soon as the command gets really processed,
 //! which is not the same as posting the M600 command into the command queue
 //! There can be a considerable lag between posting M600 and its real processing which might result

Firmware/MarlinSerial.h

@@ -96,7 +96,7 @@ class MarlinSerial //: public Stream
     static int read(void);
     static void flush(void);
     
-    static FORCE_INLINE int available(void)
+    static /*FORCE_INLINE*/ int available(void)
     {
       return (unsigned int)(RX_BUFFER_SIZE + rx_buffer.head - rx_buffer.tail) % RX_BUFFER_SIZE;
     }
@@ -184,14 +184,14 @@ class MarlinSerial //: public Stream
     
   public:
     
-    static FORCE_INLINE void write(const char *str)
+    static /*FORCE_INLINE*/ void write(const char *str)
     {
       while (*str)
         write(*str++);
     }
 
 
-    static FORCE_INLINE void write(const uint8_t *buffer, size_t size)
+    static /*FORCE_INLINE*/ void write(const uint8_t *buffer, size_t size)
     {
       while (size--)
         write(*buffer++);

Firmware/Marlin_main.cpp

@@ -43,8 +43,10 @@
  *
  */
 
+//-//
+#include "Configuration.h"
 #include "Marlin.h"
-
+  
 #ifdef ENABLE_AUTO_BED_LEVELING
 #include "vector_3.h"
   #ifdef AUTO_BED_LEVELING_GRID
@@ -405,6 +407,24 @@ void serial_echopair_P(const char *s_P, double v)
 void serial_echopair_P(const char *s_P, unsigned long v)
     { serialprintPGM(s_P); SERIAL_ECHO(v); }
 
+/*FORCE_INLINE*/ void serialprintPGM(const char *str)
+{
+#if 0
+  char ch=pgm_read_byte(str);
+  while(ch)
+  {
+    MYSERIAL.write(ch);
+    ch=pgm_read_byte(++str);
+  }
+#else
+	// hmm, same size as the above version, the compiler did a good job optimizing the above
+	while( uint8_t ch = pgm_read_byte(str) ){
+	  MYSERIAL.write((char)ch);
+	  ++str;
+	}
+#endif
+}
+
 #ifdef SDSUPPORT
   #include "SdFatUtil.h"
   int freeMemory() { return SdFatUtil::FreeRam(); }
@@ -652,19 +672,13 @@ static void factory_reset(char level)
                    
         // Level 0: Language reset
         case 0:
-if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
-            WRITE(BEEPER, HIGH);
-            _delay_ms(100);
-            WRITE(BEEPER, LOW);
+      Sound_MakeCustom(100,0,false);
 			lang_reset();
             break;
          
 		//Level 1: Reset statistics
 		case 1:
-if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
-			WRITE(BEEPER, HIGH);
-			_delay_ms(100);
-			WRITE(BEEPER, LOW);
+      Sound_MakeCustom(100,0,false);
 			eeprom_update_dword((uint32_t *)EEPROM_TOTALTIME, 0);
 			eeprom_update_dword((uint32_t *)EEPROM_FILAMENTUSED, 0);
 
@@ -719,11 +733,7 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
 			fsensor_enable();
             fsensor_autoload_set(true);
 #endif //FILAMENT_SENSOR
-                       
-if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
-            WRITE(BEEPER, HIGH);
-            _delay_ms(100);
-            WRITE(BEEPER, LOW);
+      Sound_MakeCustom(100,0,false);   
 			//_delay_ms(2000);
             break;
 
@@ -733,11 +743,7 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
 			lcd_puts_P(PSTR("Factory RESET"));
 			lcd_puts_at_P(1, 2, PSTR("ERASING all data"));
 
-if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
-			WRITE(BEEPER, HIGH);
-			_delay_ms(100);
-			WRITE(BEEPER, LOW);
-
+      Sound_MakeCustom(100,0,false);
 			er_progress = 0;
 			lcd_puts_at_P(3, 3, PSTR("      "));
 			lcd_set_cursor(3, 3);
@@ -783,12 +789,8 @@ int uart_putchar(char c, FILE *)
 
 void lcd_splash()
 {
-//	lcd_puts_at_P(0, 1, PSTR("   Original Prusa   "));
-//	lcd_puts_at_P(0, 2, PSTR("    3D  Printers    "));
-//	lcd_puts_P(PSTR("\x1b[1;3HOriginal Prusa\x1b[2;4H3D  Printers"));
-//    fputs_P(PSTR(ESC_2J ESC_H(1,1) "Original Prusa i3" ESC_H(3,2) "Prusa Research"), lcdout);
-    lcd_puts_P(PSTR(ESC_2J ESC_H(1,1) "Original Prusa i3" ESC_H(3,2) "Prusa Research"));
-//	lcd_printf_P(_N(ESC_2J "x:%.3f\ny:%.3f\nz:%.3f\ne:%.3f"), _x, _y, _z, _e);
+	lcd_clear(); // clears display and homes screen
+	lcd_puts_P(PSTR("\n Original Prusa i3\n   Prusa Research"));
 }
 
 
@@ -807,7 +809,7 @@ void factory_reset()
 
 
 			SET_OUTPUT(BEEPER);
-if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
+  if(eSoundMode!=e_SOUND_MODE_SILENT)
 			WRITE(BEEPER, HIGH);
 
 			while (!READ(BTN_ENC));
@@ -918,7 +920,7 @@ void update_sec_lang_from_external_flash()
 		uint32_t src_addr;
 		if (lang_get_header(lang, &header, &src_addr))
 		{
-			fputs_P(PSTR(ESC_H(1,3) "Language update."), lcdout);
+			lcd_puts_at_P(1,3,PSTR("Language update."));
 			for (uint8_t i = 0; i < state; i++) fputc('.', lcdout);
 			_delay(100);
 			boot_reserved = (state + 1) | (lang << 4);
@@ -992,8 +994,8 @@ void list_sec_lang_from_external_flash()
 
 static void w25x20cl_err_msg()
 {
-    lcd_puts_P(_n(ESC_2J ESC_H(0,0) "External SPI flash" ESC_H(0,1) "W25X20CL is not res-"
-            ESC_H(0,2) "ponding. Language" ESC_H(0,3) "switch unavailable."));
+	lcd_clear();
+	lcd_puts_P(_n("External SPI flash\nW25X20CL is not res-\nponding. Language\nswitch unavailable."));
 }
 
 // "Setup" function is called by the Arduino framework on startup.
@@ -1071,6 +1073,7 @@ void setup()
 	SERIAL_ECHO_START;
 	printf_P(PSTR(" " FW_VERSION_FULL "\n"));
 
+	//SERIAL_ECHOPAIR("Active sheet before:", static_cast<unsigned long int>(eeprom_read_byte(&(EEPROM_Sheets_base->active_sheet))));
 
 #ifdef DEBUG_SEC_LANG
 	lang_table_header_t header;
@@ -1305,6 +1308,9 @@ void setup()
 	update_mode_profile();
 	tmc2130_init();
 #endif //TMC2130
+#ifdef PSU_Delta
+     init_force_z();                              // ! important for correct Z-axis initialization
+#endif // PSU_Delta
     
 	setup_photpin();
 
@@ -1342,7 +1348,7 @@ void setup()
   }
 #endif //TMC2130
 
-#if defined(Z_AXIS_ALWAYS_ON)
+#if defined(Z_AXIS_ALWAYS_ON) && !defined(PSU_Delta)
 	enable_z();
 #endif
 	farm_mode = eeprom_read_byte((uint8_t*)EEPROM_FARM_MODE);
@@ -1419,20 +1425,7 @@ void setup()
 		printf_P(PSTR("Card NG!\n"));
 #endif //DEBUG_SD_SPEED_TEST
 
-	if (eeprom_read_byte((uint8_t*)EEPROM_POWER_COUNT) == 0xff) eeprom_write_byte((uint8_t*)EEPROM_POWER_COUNT, 0);
-	if (eeprom_read_byte((uint8_t*)EEPROM_CRASH_COUNT_X) == 0xff) eeprom_write_byte((uint8_t*)EEPROM_CRASH_COUNT_X, 0);
-	if (eeprom_read_byte((uint8_t*)EEPROM_CRASH_COUNT_Y) == 0xff) eeprom_write_byte((uint8_t*)EEPROM_CRASH_COUNT_Y, 0);
-	if (eeprom_read_byte((uint8_t*)EEPROM_FERROR_COUNT) == 0xff) eeprom_write_byte((uint8_t*)EEPROM_FERROR_COUNT, 0);
-	if (eeprom_read_word((uint16_t*)EEPROM_POWER_COUNT_TOT) == 0xffff) eeprom_write_word((uint16_t*)EEPROM_POWER_COUNT_TOT, 0);
-	if (eeprom_read_word((uint16_t*)EEPROM_CRASH_COUNT_X_TOT) == 0xffff) eeprom_write_word((uint16_t*)EEPROM_CRASH_COUNT_X_TOT, 0);
-	if (eeprom_read_word((uint16_t*)EEPROM_CRASH_COUNT_Y_TOT) == 0xffff) eeprom_write_word((uint16_t*)EEPROM_CRASH_COUNT_Y_TOT, 0);
-	if (eeprom_read_word((uint16_t*)EEPROM_FERROR_COUNT_TOT) == 0xffff) eeprom_write_word((uint16_t*)EEPROM_FERROR_COUNT_TOT, 0);
-
-	if (eeprom_read_word((uint16_t*)EEPROM_MMU_FAIL_TOT) == 0xffff) eeprom_update_word((uint16_t *)EEPROM_MMU_FAIL_TOT, 0);
-	if (eeprom_read_word((uint16_t*)EEPROM_MMU_LOAD_FAIL_TOT) == 0xffff) eeprom_update_word((uint16_t *)EEPROM_MMU_LOAD_FAIL_TOT, 0);
-	if (eeprom_read_byte((uint8_t*)EEPROM_MMU_FAIL) == 0xff) eeprom_update_byte((uint8_t *)EEPROM_MMU_FAIL, 0);
-	if (eeprom_read_byte((uint8_t*)EEPROM_MMU_LOAD_FAIL) == 0xff) eeprom_update_byte((uint8_t *)EEPROM_MMU_LOAD_FAIL, 0);
-
+    eeprom_init();
 #ifdef SNMM
 	if (eeprom_read_dword((uint32_t*)EEPROM_BOWDEN_LENGTH) == 0x0ffffffff) { //bowden length used for SNMM
 	  int _z = BOWDEN_LENGTH;
@@ -1499,7 +1492,6 @@ void setup()
 		SilentModeMenu_MMU = 1;
 		eeprom_write_byte((uint8_t*)EEPROM_MMU_STEALTH, SilentModeMenu_MMU);
 	}
-	check_babystep(); //checking if Z babystep is in allowed range
 
 #if !defined(DEBUG_DISABLE_FANCHECK) && defined(FANCHECK) && defined(TACH_1) && TACH_1 >-1
 	setup_fan_interrupt();
@@ -1641,11 +1633,11 @@ void setup()
   }
 #endif //UVLO_SUPPORT
   fCheckModeInit();
+  fSetMmuMode(mmu_enabled);
   KEEPALIVE_STATE(NOT_BUSY);
 #ifdef WATCHDOG
   wdt_enable(WDTO_4S);
 #endif //WATCHDOG
-
 }
 
 
@@ -2342,11 +2334,7 @@ void refresh_cmd_timeout(void)
 #endif //FWRETRACT
 
 void trace() {
-//if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
-    _tone(BEEPER, 440);
-    _delay(25);
-    _noTone(BEEPER);
-    _delay(20);
+    Sound_MakeCustom(25,440,true);
 }
 /*
 void ramming() {
@@ -3158,6 +3146,11 @@ void gcode_M701()
 {
 	printf_P(PSTR("gcode_M701 begin\n"));
 
+	if (farm_mode)
+	{
+		prusa_statistics(22);
+	}
+
 	if (mmu_enabled) 
 	{
 		extr_adj(tmp_extruder);//loads current extruder
@@ -3184,9 +3177,7 @@ void gcode_M701()
 		load_filament_final_feed(); //slow sequence
 		st_synchronize();
 
-		if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE)) _tone(BEEPER, 500);
-		delay_keep_alive(50);
-		_noTone(BEEPER);
+    Sound_MakeCustom(50,500,false);
 
 		if (!farm_mode && loading_flag) {
 			lcd_load_filament_color_check();
@@ -3267,14 +3258,19 @@ extern uint8_t st_backlash_x;
 extern uint8_t st_backlash_y;
 #endif //BACKLASH_Y
 
+//! \ingroup marlin_main
+
 //! @brief Parse and process commands
 //!
 //! look here for descriptions of G-codes: http://linuxcnc.org/handbook/gcode/g-code.html
 //! http://objects.reprap.org/wiki/Mendel_User_Manual:_RepRapGCodes
 //!
-//! Implemented Codes
+//!
+//! Implemented Codes 
 //! -------------------
 //!
+//! * _This list is not updated. Current documentation is maintained inside the process_cmd function._ 
+//!
 //!@n PRUSA CODES
 //!@n P F - Returns FW versions
 //!@n P R - Returns revision of printer
@@ -3397,14 +3393,30 @@ extern uint8_t st_backlash_y;
 //!
 //!@n M928 - Start SD logging (M928 filename.g) - ended by M29
 //!@n M999 - Restart after being stopped by error
+//! <br><br>
+
+/** @defgroup marlin_main Marlin main */
+
+/** \ingroup GCodes */
+
+//! _This is a list of currently implemented G Codes in Prusa firmware (dynamically generated from doxygen)_
+
+
 void process_commands()
 {
   #ifdef FANCHECK
   if (fan_check_error){
 	if( fan_check_error == EFCE_DETECTED ){
 		fan_check_error = EFCE_REPORTED;
-		lcd_pause_print();
-	} // otherwise it has already been reported, so just ignore further processing
+      
+      if(is_usb_printing){
+        SERIAL_PROTOCOLLNRPGM(MSG_OCTOPRINT_PAUSE);
+      }
+      else{
+        lcd_pause_print();
+      }
+
+    } // otherwise it has already been reported, so just ignore further processing
     return;
   }
   #endif
@@ -3448,21 +3460,33 @@ void process_commands()
 #ifdef TMC2130
 	else if (strncmp_P(CMDBUFFER_CURRENT_STRING, PSTR("CRASH_"), 6) == 0)
 	{
-	  if(code_seen("CRASH_DETECTED")) //! CRASH_DETECTED
+
+    //! ### CRASH_DETECTED - TMC2130
+    // ---------------------------------
+	  if(code_seen("CRASH_DETECTED"))
 	  {
 		  uint8_t mask = 0;
 		  if (code_seen('X')) mask |= X_AXIS_MASK;
 		  if (code_seen('Y')) mask |= Y_AXIS_MASK;
 		  crashdet_detected(mask);
 	  }
-	  else if(code_seen("CRASH_RECOVER")) //! CRASH_RECOVER
+
+    //! ### CRASH_RECOVER - TMC2130
+    // ----------------------------------
+	  else if(code_seen("CRASH_RECOVER"))
 		  crashdet_recover();
-	  else if(code_seen("CRASH_CANCEL")) //! CRASH_CANCEL
+
+    //! ### CRASH_CANCEL - TMC2130
+    // ----------------------------------
+	  else if(code_seen("CRASH_CANCEL"))
 		  crashdet_cancel();
 	}
 	else if (strncmp_P(CMDBUFFER_CURRENT_STRING, PSTR("TMC_"), 4) == 0)
 	{
-		if (strncmp_P(CMDBUFFER_CURRENT_STRING + 4, PSTR("SET_WAVE_"), 9) == 0) //! TMC_SET_WAVE_
+    
+    //! ### TMC_SET_WAVE_ 
+    // --------------------
+		if (strncmp_P(CMDBUFFER_CURRENT_STRING + 4, PSTR("SET_WAVE_"), 9) == 0)
 		{
 			uint8_t axis = *(CMDBUFFER_CURRENT_STRING + 13);
 			axis = (axis == 'E')?3:(axis - 'X');
@@ -3472,7 +3496,10 @@ void process_commands()
 				tmc2130_set_wave(axis, 247, fac);
 			}
 		}
-		else if (strncmp_P(CMDBUFFER_CURRENT_STRING + 4, PSTR("SET_STEP_"), 9) == 0) //! TMC_SET_STEP_
+    
+    //! ### TMC_SET_STEP_
+    //  ------------------
+		else if (strncmp_P(CMDBUFFER_CURRENT_STRING + 4, PSTR("SET_STEP_"), 9) == 0)
 		{
 			uint8_t axis = *(CMDBUFFER_CURRENT_STRING + 13);
 			axis = (axis == 'E')?3:(axis - 'X');
@@ -3483,7 +3510,10 @@ void process_commands()
 				tmc2130_goto_step(axis, step & (4*res - 1), 2, 1000, res);
 			}
 		}
-		else if (strncmp_P(CMDBUFFER_CURRENT_STRING + 4, PSTR("SET_CHOP_"), 9) == 0) //! TMC_SET_CHOP_
+
+    //! ### TMC_SET_CHOP_
+    //  -------------------
+		else if (strncmp_P(CMDBUFFER_CURRENT_STRING + 4, PSTR("SET_CHOP_"), 9) == 0)
 		{
 			uint8_t axis = *(CMDBUFFER_CURRENT_STRING + 13);
 			axis = (axis == 'E')?3:(axis - 'X');
@@ -3534,19 +3564,52 @@ void process_commands()
 	}
 #endif //BACKLASH_Y
 #endif //TMC2130
-  else if(code_seen("PRUSA")){
-		if (code_seen("Ping")) {  //! PRUSA Ping
+  else if(code_seen("PRUSA")){ 
+    /*!
+    *
+    ### PRUSA - Internal command set
+    
+    Set of internal PRUSA commands
+      
+          PRUSA [ Ping | PRN | FAN | fn | thx | uvlo | fsensor_recover | MMURES | RESET | fv | M28 | SN | Fir | Rev | Lang | Lz | Beat | FR ]
+      
+      - `Ping` 
+      - `PRN` - Prints revision of the printer
+      - `FAN` - Prints fan details
+      - `fn` - Prints farm no.
+      - `thx` 
+      - `uvlo` 
+      - `fsensor_recover` - Filament sensor recover - restore print and continue
+      - `MMURES` - Reset MMU
+      - `RESET` - (Careful!)
+      - `fv`  - ?
+      - `M28` 
+      - `SN` 
+      - `Fir` - Prints firmware version
+      - `Rev`- Prints filament size, elelectronics, nozzle type
+      - `Lang` - Reset the language
+      - `Lz` 
+      - `Beat` - Kick farm link timer
+      - `FR` - Full factory reset
+      - `nozzle set <diameter>` - set nozzle diameter (farm mode only), e.g. `PRUSA nozzle set 0.4`
+      - `nozzle D<diameter>` - check the nozzle diameter (farm mode only), works like M862.1 P, e.g. `PRUSA nozzle D0.4`
+      - `nozzle` - prints nozzle diameter (farm mode only), works like M862.1 P, e.g. `PRUSA nozzle`
+    *
+    */
+
+
+		if (code_seen("Ping")) {  // PRUSA Ping
 			if (farm_mode) {
 				PingTime = _millis();
 				//MYSERIAL.print(farm_no); MYSERIAL.println(": OK");
 			}	  
 		}
-		else if (code_seen("PRN")) { //! PRUSA PRN
+		else if (code_seen("PRN")) { // PRUSA PRN
 		  printf_P(_N("%d"), status_number);
 
-        }else if (code_seen("FAN")) { //! PRUSA FAN
+        }else if (code_seen("FAN")) { // PRUSA FAN
 			printf_P(_N("E0:%d RPM\nPRN0:%d RPM\n"), 60*fan_speed[0], 60*fan_speed[1]);
-		}else if (code_seen("fn")) { //! PRUSA fn
+		}else if (code_seen("fn")) { // PRUSA fn
 		  if (farm_mode) {
 			printf_P(_N("%d"), farm_no);
 		  }
@@ -3555,26 +3618,26 @@ void process_commands()
 		  }
 		  
 		}
-		else if (code_seen("thx")) //! PRUSA thx
+		else if (code_seen("thx")) // PRUSA thx
 		{
 			no_response = false;
 		}	
-		else if (code_seen("uvlo")) //! PRUSA uvlo
+		else if (code_seen("uvlo")) // PRUSA uvlo
 		{
                eeprom_update_byte((uint8_t*)EEPROM_UVLO,0); 
                enquecommand_P(PSTR("M24")); 
 		}	
 #ifdef FILAMENT_SENSOR
-		else if (code_seen("fsensor_recover")) //! PRUSA fsensor_recover
+		else if (code_seen("fsensor_recover")) // PRUSA fsensor_recover
 		{
                fsensor_restore_print_and_continue();
 		}	
 #endif //FILAMENT_SENSOR
-		else if (code_seen("MMURES")) //! PRUSA MMURES
+		else if (code_seen("MMURES")) // PRUSA MMURES
 		{
 			mmu_reset();
 		}
-		else if (code_seen("RESET")) { //! PRUSA RESET
+		else if (code_seen("RESET")) { // PRUSA RESET
             // careful!
             if (farm_mode) {
 #if (defined(WATCHDOG) && (MOTHERBOARD == BOARD_EINSY_1_0a))
@@ -3590,7 +3653,7 @@ void process_commands()
             else {
                 MYSERIAL.println("Not in farm mode.");
             }
-		}else if (code_seen("fv")) { //! PRUSA fv
+		}else if (code_seen("fv")) { // PRUSA fv
         // get file version
         #ifdef SDSUPPORT
         card.openFile(strchr_pointer + 3,true);
@@ -3605,39 +3668,39 @@ void process_commands()
 
         #endif // SDSUPPORT
 
-    } else if (code_seen("M28")) { //! PRUSA M28
+    } else if (code_seen("M28")) { // PRUSA M28
         trace();
         prusa_sd_card_upload = true;
         card.openFile(strchr_pointer+4,false);
 
-	} else if (code_seen("SN")) { //! PRUSA SN
+	} else if (code_seen("SN")) { // PRUSA SN
         gcode_PRUSA_SN();
 
-	} else if(code_seen("Fir")){ //! PRUSA Fir
+	} else if(code_seen("Fir")){ // PRUSA Fir
 
       SERIAL_PROTOCOLLN(FW_VERSION_FULL);
 
-    } else if(code_seen("Rev")){ //! PRUSA Rev
+    } else if(code_seen("Rev")){ // PRUSA Rev
 
       SERIAL_PROTOCOLLN(FILAMENT_SIZE "-" ELECTRONICS "-" NOZZLE_TYPE );
 
-    } else if(code_seen("Lang")) { //! PRUSA Lang
+    } else if(code_seen("Lang")) { // PRUSA Lang
 	  lang_reset();
 
-	} else if(code_seen("Lz")) { //! PRUSA Lz
+	} else if(code_seen("Lz")) { // PRUSA Lz
       EEPROM_save_B(EEPROM_BABYSTEP_Z,0);
 
-	} else if(code_seen("Beat")) { //! PRUSA Beat
+	} else if(code_seen("Beat")) { // PRUSA Beat
         // Kick farm link timer
         kicktime = _millis();
 
-    } else if(code_seen("FR")) { //! PRUSA FR
+    } else if(code_seen("FR")) { // PRUSA FR
         // Factory full reset
         factory_reset(0);
 
 //-//
 /*
-    } else if(code_seen("qqq")) {
+    } else if(code_seen("rrr")) {
 MYSERIAL.println("=== checking ===");
 MYSERIAL.println(eeprom_read_byte((uint8_t*)EEPROM_CHECK_MODE),DEC);
 MYSERIAL.println(eeprom_read_byte((uint8_t*)EEPROM_NOZZLE_DIAMETER),DEC);
@@ -3650,7 +3713,7 @@ eeprom_update_byte((uint8_t*)EEPROM_CHECK_MODE,0xFF);
 eeprom_update_byte((uint8_t*)EEPROM_NOZZLE_DIAMETER,0xFF);
 eeprom_update_word((uint16_t*)EEPROM_NOZZLE_DIAMETER_uM,0xFFFF);
 */
-    } else if (code_seen("nozzle")) { //! PRUSA nozzle
+    } else if (code_seen("nozzle")) { // PRUSA nozzle
           uint16_t nDiameter;
           if(code_seen('D'))
                {
@@ -3659,13 +3722,47 @@ eeprom_update_word((uint16_t*)EEPROM_NOZZLE_DIAMETER_uM,0xFFFF);
                }
           else if(code_seen("set") && farm_mode)
                {
+               strchr_pointer++;                  // skip 1st char (~ 's')
                strchr_pointer++;                  // skip 2nd char (~ 'e')
-               strchr_pointer++;                  // skip 3rd char (~ 't')
                nDiameter=(uint16_t)(code_value()*1000.0+0.5); // [,um]
-               eeprom_update_byte((uint8_t*)EEPROM_NOZZLE_DIAMETER,(uint8_t)e_NOZZLE_DIAMETER_NULL); // for correct synchronization after farm-mode exiting
+               eeprom_update_byte((uint8_t*)EEPROM_NOZZLE_DIAMETER,(uint8_t)ClNozzleDiameter::_Diameter_Undef); // for correct synchronization after farm-mode exiting
                eeprom_update_word((uint16_t*)EEPROM_NOZZLE_DIAMETER_uM,nDiameter);
                }
           else SERIAL_PROTOCOLLN((float)eeprom_read_word((uint16_t*)EEPROM_NOZZLE_DIAMETER_uM)/1000.0);
+
+//-// !!! SupportMenu
+/*
+// musi byt PRED "PRUSA model"
+    } else if (code_seen("smodel")) { //! PRUSA smodel
+          size_t nOffset;
+// ! -> "l"
+          strchr_pointer+=5*sizeof(*strchr_pointer); // skip 1st - 5th char (~ 'smode')
+          nOffset=strspn(strchr_pointer+1," \t\n\r\v\f");
+          if(*(strchr_pointer+1+nOffset))
+               printer_smodel_check(strchr_pointer);
+          else SERIAL_PROTOCOLLN(PRINTER_NAME);
+    } else if (code_seen("model")) { //! PRUSA model
+          uint16_t nPrinterModel;
+          strchr_pointer+=4*sizeof(*strchr_pointer); // skip 1st - 4th char (~ 'mode')
+          nPrinterModel=(uint16_t)code_value_long();
+          if(nPrinterModel!=0)
+               printer_model_check(nPrinterModel);
+          else SERIAL_PROTOCOLLN(PRINTER_TYPE);
+    } else if (code_seen("version")) { //! PRUSA version
+          strchr_pointer+=7*sizeof(*strchr_pointer); // skip 1st - 7th char (~ 'version')
+          while(*strchr_pointer==' ')             // skip leading spaces
+               strchr_pointer++;
+          if(*strchr_pointer!=0)
+               fw_version_check(strchr_pointer);
+          else SERIAL_PROTOCOLLN(FW_VERSION);
+    } else if (code_seen("gcode")) { //! PRUSA gcode
+          uint16_t nGcodeLevel;
+          strchr_pointer+=4*sizeof(*strchr_pointer); // skip 1st - 4th char (~ 'gcod')
+          nGcodeLevel=(uint16_t)code_value_long();
+          if(nGcodeLevel!=0)
+               gcode_level_check(nGcodeLevel);
+          else SERIAL_PROTOCOLLN(GCODE_LEVEL);
+*/
 	}	
     //else if (code_seen('Cal')) {
 		//  lcd_calibration();
@@ -3680,6 +3777,9 @@ eeprom_update_word((uint16_t*)EEPROM_NOZZLE_DIAMETER_uM,0xFFFF);
 //	printf_P(_N("BEGIN G-CODE=%u\n"), gcode_in_progress);
     switch (gcode_in_progress)
     {
+
+    //! ### G0, G1 - Coordinated movement X Y Z E
+    // --------------------------------------      
     case 0: // G0 -> G1
     case 1: // G1
       if(Stopped == false) {
@@ -3751,7 +3851,7 @@ eeprom_update_word((uint16_t*)EEPROM_NOZZLE_DIAMETER_uM,0xFFFF);
                             
                             SET_OUTPUT(BEEPER);
                             if (counterBeep== 0){
-if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
+if(eSoundMode!=e_SOUND_MODE_SILENT)
                               WRITE(BEEPER,HIGH);
                             }
                             
@@ -3877,19 +3977,30 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
         //ClearToSend();
       }
       break;
-    case 2: // G2  - CW ARC
+
+    //! ### G2 - CW ARC
+    // ------------------------------     
+    case 2: 
       if(Stopped == false) {
         get_arc_coordinates();
         prepare_arc_move(true);
       }
       break;
-    case 3: // G3  - CCW ARC
+ 
+
+    //! ### G3  - CCW ARC
+    // -------------------------------
+    case 3: 
       if(Stopped == false) {
         get_arc_coordinates();
         prepare_arc_move(false);
       }
       break;
-    case 4: // G4 dwell      
+
+
+    //! ### G4 - Dwell
+    // -------------------------------
+    case 4: 
       codenum = 0;
       if(code_seen('P')) codenum = code_value(); // milliseconds to wait
       if(code_seen('S')) codenum = code_value() * 1000; // seconds to wait
@@ -3904,7 +4015,11 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
       }
       break;
       #ifdef FWRETRACT
-      case 10: // G10 retract
+      
+
+    //! ### G10 Retract
+    // ------------------------------
+    case 10: 
        #if EXTRUDERS > 1
         retracted_swap[active_extruder]=(code_seen('S') && code_value_long() == 1); // checks for swap retract argument
         retract(true,retracted_swap[active_extruder]);
@@ -3912,7 +4027,11 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
         retract(true);
        #endif
       break;
-      case 11: // G11 retract_recover
+      
+
+    //! ### G11 - Retract recover
+    // ----------------------------- 
+    case 11: 
        #if EXTRUDERS > 1
         retract(false,retracted_swap[active_extruder]);
        #else
@@ -3920,7 +4039,11 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
        #endif 
       break;
       #endif //FWRETRACT
-    case 28: //G28 Home all Axis one at a time
+    
+
+    //! ### G28 - Home all Axis one at a time
+    // --------------------------------------------
+    case 28: 
     {
       long home_x_value = 0;
       long home_y_value = 0;
@@ -3947,8 +4070,13 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
       }
       break;
     }
+
 #ifdef ENABLE_AUTO_BED_LEVELING
-    case 29: // G29 Detailed Z-Probe, probes the bed at 3 or more points.
+    
+
+    //! ### G29 - Detailed Z-Probe
+    // --------------------------------    
+    case 29: 
         {
             #if Z_MIN_PIN == -1
             #error "You must have a Z_MIN endstop in order to enable Auto Bed Leveling feature! Z_MIN_PIN must point to a valid hardware pin."
@@ -4091,7 +4219,10 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
         }
         break;
 #ifndef Z_PROBE_SLED
-    case 30: // G30 Single Z Probe
+
+    //! ### G30 - Single Z Probe
+    // ------------------------------------        
+    case 30: 
         {
             st_synchronize();
             // TODO: make sure the bed_level_rotation_matrix is identity or the planner will get set incorectly
@@ -4113,17 +4244,27 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
         }
         break;
 #else
-    case 31: // dock the sled
+
+    //! ### G31 - Dock the sled
+    // ---------------------------
+    case 31: 
         dock_sled(true);
         break;
-    case 32: // undock the sled
+
+
+    //! ### G32 - Undock the sled
+    // ----------------------------     
+    case 32: 
         dock_sled(false);
         break;
 #endif // Z_PROBE_SLED
 #endif // ENABLE_AUTO_BED_LEVELING
             
 #ifdef MESH_BED_LEVELING
-    case 30: // G30 Single Z Probe
+
+    //! ### G30 - Single Z Probe
+    // ----------------------------    
+    case 30: 
         {
             st_synchronize();
             // TODO: make sure the bed_level_rotation_matrix is identity or the planner will get set incorectly
@@ -4139,7 +4280,8 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
         }
         break;
 	
-
+  //! ### G75 - Print temperature interpolation
+  // ---------------------------------------------
 	case 75:
 	{
 		for (int i = 40; i <= 110; i++)
@@ -4147,7 +4289,9 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
 	}
 	break;
 
-	case 76: //! G76 - PINDA probe temperature calibration
+  //! ### G76 - PINDA probe temperature calibration
+  // ------------------------------------------------
+	case 76: 
 	{
 #ifdef PINDA_THERMISTOR
 		if (true)
@@ -4404,18 +4548,16 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
 	break;
 
 
-
-	/**
-	* G80: Mesh-based Z probe, probes a grid and produces a
-	*      mesh to compensate for variable bed height
-	*
+	//! ### G80 - Mesh-based Z probe 
+  // -----------------------------------
+  
+	/*
+  * Probes a grid and produces a mesh to compensate for variable bed height
 	* The S0 report the points as below
-	* @code{.unparsed}
 	*  +----> X-axis
 	*  |
 	*  |
 	*  v Y-axis
-	* @endcode
 	*/
 
 	case 80:
@@ -4839,8 +4981,11 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
 	}
 	break;
 
-        /**
-         * G81: Print mesh bed leveling status and bed profile if activated
+        //! ### G81 - Mesh bed leveling status
+        // -----------------------------------------
+
+         /*
+         * Prints mesh bed leveling status and bed profile if activated
          */
         case 81:
             if (mbl.active) {
@@ -4864,7 +5009,7 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
             break;
             
 #if 0
-        /**
+        /*
          * G82: Single Z probe at current location
          *
          * WARNING! USE WITH CAUTION! If you'll try to probe where is no leveling pad, nasty things can happen!
@@ -4880,7 +5025,7 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
             SERIAL_PROTOCOLPGM("\n");
             break;
 
-            /**
+            /*
              * G83: Prusa3D specific: Babystep in Z and store to EEPROM
              */
         case 83:
@@ -4905,7 +5050,7 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
             
         }
         break;
-            /**
+            /*
              * G84: Prusa3D specific: UNDO Babystep Z (move Z axis back)
              */
         case 84:
@@ -4913,7 +5058,7 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
             // babystepLoadZ = 0;
             break;
             
-            /**
+            /*
              * G85: Prusa3D specific: Pick best babystep
              */
         case 85:
@@ -4921,38 +5066,58 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
             break;
 #endif
             
-            /**
-             * G86: Prusa3D specific: Disable babystep correction after home.
-             * This G-code will be performed at the start of a calibration script.
-             */
+        /**
+         * ### G86 - Disable babystep correction after home
+         *
+         * This G-code will be performed at the start of a calibration script.
+         * (Prusa3D specific)
+         */
         case 86:
             calibration_status_store(CALIBRATION_STATUS_LIVE_ADJUST);
             break;
-            /**
-             * G87: Prusa3D specific: Enable babystep correction after home
-             * This G-code will be performed at the end of a calibration script.
-             */
+           
+
+        /**
+         * ### G87 - Enable babystep correction after home
+         * 
+         *
+         * This G-code will be performed at the end of a calibration script.
+         * (Prusa3D specific)
+         */
         case 87:
 			calibration_status_store(CALIBRATION_STATUS_CALIBRATED);
             break;
 
-            /**
-             * G88: Prusa3D specific: Don't know what it is for, it is in V2Calibration.gcode
-             */
+
+        /**
+         * ### G88 - Reserved
+         *
+         * Currently has no effect. 
+         */
+
+        // Prusa3D specific: Don't know what it is for, it is in V2Calibration.gcode
+
 		    case 88:
 			      break;
 
 
 #endif  // ENABLE_MESH_BED_LEVELING
             
-            
-    case 90: // G90
+    //! ### G90 - Switch off relative mode
+    // -------------------------------
+    case 90:
       relative_mode = false;
       break;
-    case 91: // G91
+
+    //! ### G91 - Switch on relative mode
+    // -------------------------------
+    case 91:
       relative_mode = true;
       break;
-    case 92: // G92
+
+    //! ### G92 - Set position
+    // -----------------------------
+    case 92:
       if(!code_seen(axis_codes[E_AXIS]))
         st_synchronize();
       for(int8_t i=0; i < NUM_AXIS; i++) {
@@ -4969,7 +5134,10 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
       }
       break;
 
-	case 98: //! G98 (activate farm mode)
+
+  //! ### G98 - Activate farm mode
+  // -----------------------------------    
+	case 98:
 		farm_mode = 1;
 		PingTime = _millis();
 		eeprom_update_byte((unsigned char *)EEPROM_FARM_MODE, farm_mode);
@@ -4979,7 +5147,9 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
           fCheckModeInit();                       // alternatively invoke printer reset
 		break;
 
-	case 99: //! G99 (deactivate farm mode)
+  //! ### G99 - Deactivate farm mode
+  // -------------------------------------
+	case 99:
 		farm_mode = 0;
 		lcd_printer_connected();
 		eeprom_update_byte((unsigned char *)EEPROM_FARM_MODE, farm_mode);
@@ -4993,6 +5163,9 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
 	gcode_in_progress = 0;
   } // end if(code_seen('G'))
 
+
+  //! ---------------------------------------------------------------------------------
+
   else if(code_seen('M'))
   {
 
@@ -5011,6 +5184,8 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
     switch(mcode_in_progress)
     {
 
+    //! ### M0, M1 - Stop the printer
+    // ---------------------------------------------------------------
     case 0: // M0 - Unconditional stop - Wait for user button press on LCD
     case 1: // M1 - Conditional stop - Wait for user button press on LCD
     {
@@ -5058,6 +5233,9 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
         LCD_MESSAGERPGM(_T(WELCOME_MSG));
     }
     break;
+
+    //! ### M17 - Enable axes
+    // ---------------------------------
     case 17:
         LCD_MESSAGERPGM(_i("No move."));////MSG_NO_MOVE
         enable_x();
@@ -5069,44 +5247,68 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
       break;
 
 #ifdef SDSUPPORT
-    case 20: // M20 - list SD card
+
+    //! ### M20 - SD Card file list
+    // -----------------------------------
+    case 20:
       SERIAL_PROTOCOLLNRPGM(_N("Begin file list"));////MSG_BEGIN_FILE_LIST
       card.ls();
       SERIAL_PROTOCOLLNRPGM(_N("End file list"));////MSG_END_FILE_LIST
       break;
-    case 21: // M21 - init SD card
 
+    //! ### M21 - Init SD card
+    // ------------------------------------
+    case 21:
       card.initsd();
-
       break;
-    case 22: //M22 - release SD card
-      card.release();
 
+    //! ### M22 - Release SD card
+    // -----------------------------------
+    case 22: 
+      card.release();
       break;
-    case 23: //M23 - Select file
+
+    //! ### M23 - Select file
+    // -----------------------------------
+    case 23: 
       starpos = (strchr(strchr_pointer + 4,'*'));
       if(starpos!=NULL)
         *(starpos)='\0';
       card.openFile(strchr_pointer + 4,true);
       break;
-    case 24: //M24 - Start SD print
+
+    //! ### M24 - Start SD print
+    // ----------------------------------
+    case 24:
 	  if (!card.paused) 
 		failstats_reset_print();
       card.startFileprint();
       starttime=_millis();
 	  break;
-    case 25: //M25 - Pause SD print
+
+    //! ### M25 - Pause SD print
+    // ----------------------------------
+    case 25:
       card.pauseSDPrint();
       break;
-    case 26: //M26 - Set SD index
+
+    //! ### M26 - Set SD index
+    // ----------------------------------
+    case 26: 
       if(card.cardOK && code_seen('S')) {
         card.setIndex(code_value_long());
       }
       break;
-    case 27: //M27 - Get SD status
+
+    //! ### M27 - Get SD status
+    // ----------------------------------
+    case 27:
       card.getStatus();
       break;
-    case 28: //M28 - Start SD write
+
+    //! ### M28 - Start SD write
+    // ---------------------------------  
+    case 28: 
       starpos = (strchr(strchr_pointer + 4,'*'));
       if(starpos != NULL){
         char* npos = strchr(CMDBUFFER_CURRENT_STRING, 'N');
@@ -5115,11 +5317,18 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
       }
       card.openFile(strchr_pointer+4,false);
       break;
-    case 29: //M29 - Stop SD write
+
+    //! ### M29 - Stop SD write
+    // -------------------------------------
+    //! Currently has no effect.
+    case 29:
       //processed in write to file routine above
       //card,saving = false;
       break;
-    case 30: //M30 <filename> Delete File
+
+    //! ### M30 - Delete file  <filename> 
+    // ----------------------------------
+    case 30:
       if (card.cardOK){
         card.closefile();
         starpos = (strchr(strchr_pointer + 4,'*'));
@@ -5131,7 +5340,10 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
         card.removeFile(strchr_pointer + 4);
       }
       break;
-    case 32: //M32 - Select file and start SD print
+
+    //! ### M32 - Select file and start SD print
+    // ------------------------------------
+    case 32:
     {
       if(card.sdprinting) {
         st_synchronize();
@@ -5166,7 +5378,10 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
           starttime=_millis(); //procedure calls count as normal print time.
       }
     } break;
-    case 928: //M928 - Start SD write
+
+    //! ### M982 - Start SD write
+    // ---------------------------------
+    case 928: 
       starpos = (strchr(strchr_pointer + 5,'*'));
       if(starpos != NULL){
         char* npos = strchr(CMDBUFFER_CURRENT_STRING, 'N');
@@ -5178,6 +5393,8 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
 
 #endif //SDSUPPORT
 
+    //! ### M31 - Report current print time
+    // --------------------------------------------------
     case 31: //M31 take time since the start of the SD print or an M109 command
       {
       stoptime=_millis();
@@ -5193,7 +5410,10 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
       autotempShutdown();
       }
       break;
-    case 42: //M42 -Change pin status via gcode
+
+    //! ### M42 - Set pin state
+    // -----------------------------
+    case 42:
       if (code_seen('S'))
       {
         int pin_status = code_value();
@@ -5220,7 +5440,11 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
         }
       }
      break;
-    case 44: //! M44: Prusa3D: Reset the bed skew and offset calibration.
+
+
+    //! ### M44 - Reset the bed skew and offset calibration (Prusa specific)
+    // --------------------------------------------------------------------
+    case 44: // M44: Prusa3D: Reset the bed skew and offset calibration.
 
 		// Reset the baby step value and the baby step applied flag.
 		calibration_status_store(CALIBRATION_STATUS_ASSEMBLED);
@@ -5234,7 +5458,9 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
         world2machine_revert_to_uncorrected();
         break;
 
-    case 45: //! M45: Prusa3D: bed skew and offset with manual Z up
+    //! ### M45 - Bed skew and offset with manual Z up (Prusa specific)
+    // ------------------------------------------------------
+    case 45: // M45: Prusa3D: bed skew and offset with manual Z up
     {
 		int8_t verbosity_level = 0;
 		bool only_Z = code_seen('Z');
@@ -5273,15 +5499,17 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
     }
     */
 
+    //! ### M47 - Show end stops dialog on the display (Prusa specific)
+    // ---------------------------------------------------- 
     case 47:
-        //! M47: Prusa3D: Show end stops dialog on the display.
+        
 		KEEPALIVE_STATE(PAUSED_FOR_USER);
         lcd_diag_show_end_stops();
 		KEEPALIVE_STATE(IN_HANDLER);
         break;
 
 #if 0
-    case 48: //! M48: scan the bed induction sensor points, print the sensor trigger coordinates to the serial line for visualization on the PC.
+    case 48: // M48: scan the bed induction sensor points, print the sensor trigger coordinates to the serial line for visualization on the PC.
     {
         // Disable the default update procedure of the display. We will do a modal dialog.
         lcd_update_enable(false);
@@ -5319,11 +5547,15 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
 
 #ifdef ENABLE_AUTO_BED_LEVELING
 #ifdef Z_PROBE_REPEATABILITY_TEST 
-    //! M48 Z-Probe repeatability measurement function.
-    //!
-    //! Usage:   M48 <n #_samples> <X X_position_for_samples> <Y Y_position_for_samples> <V Verbose_Level> <L legs_of_movement_prior_to_doing_probe>
+
+    //! ### M48 - Z-Probe repeatability measurement function.
+    // ------------------------------------------------------
     //!
-    //! This function assumes the bed has been homed.  Specificaly, that a G28 command
+    //! _Usage:_
+    //!    
+    //!     M48 <n #_samples> <X X_position_for_samples> <Y Y_position_for_samples> <V Verbose_Level> <L legs_of_movement_prior_to_doing_probe>
+    //! 
+    //! This function assumes the bed has been homed.  Specifically, that a G28 command
     //! as been issued prior to invoking the M48 Z-Probe repeatability measurement function.
     //! Any information generated by a prior G29 Bed leveling command will be lost and need to be
     //! regenerated.
@@ -5569,6 +5801,13 @@ Sigma_Exit:
 	}
 #endif		// Z_PROBE_REPEATABILITY_TEST 
 #endif		// ENABLE_AUTO_BED_LEVELING
+
+  //! ### M73 - Set/get print progress 
+  // -------------------------------------
+  //! _Usage:_
+  //! 
+  //!     M73 P<percent> R<time_remaining> Q<percent_silent> S<time_remaining_silent>
+  //! 
 	case 73: //M73 show percent done and time remaining
 		if(code_seen('P')) print_percent_done_normal = code_value();
 		if(code_seen('R')) print_time_remaining_normal = code_value();
@@ -5582,6 +5821,8 @@ Sigma_Exit:
 		}
 		break;
 
+    //! ### M104 - Set hotend temperature
+    // -----------------------------------------
     case 104: // M104
     {
           uint8_t extruder;
@@ -5595,13 +5836,22 @@ Sigma_Exit:
           setWatch();
           break;
     }
-    case 112: //  M112 -Emergency Stop
+
+    //! ### M112 - Emergency stop
+    // -----------------------------------------
+    case 112: 
       kill(_n(""), 3);
       break;
-    case 140: // M140 set bed temp
+
+    //! ### M140 - Set bed temperature
+    // -----------------------------------------
+    case 140: 
       if (code_seen('S')) setTargetBed(code_value());
       break;
-    case 105 : // M105
+
+    //! ### M105 - Report temperatures
+    // ----------------------------------------- 
+    case 105:
     {
       uint8_t extruder;
       if(setTargetedHotend(105, extruder)){
@@ -5695,8 +5945,11 @@ Sigma_Exit:
       return;
       break;
     }
+
+    //! ### M109 - Wait for extruder temperature
+    // -------------------------------------------------
     case 109:
-    {// M109 - Wait for extruder heater to reach target.
+    {
       uint8_t extruder;
       if(setTargetedHotend(109, extruder)){
         break;
@@ -5746,7 +5999,10 @@ Sigma_Exit:
         previous_millis_cmd = _millis();
       }
       break;
-    case 190: // M190 - Wait for bed heater to reach target.
+
+    //! ### M190 - Wait for bed temperature
+    // ---------------------------------------
+    case 190: 
     #if defined(TEMP_BED_PIN) && TEMP_BED_PIN > -1
         LCD_MESSAGERPGM(_T(MSG_BED_HEATING));
 		heating_status = 3;
@@ -5797,7 +6053,10 @@ Sigma_Exit:
         break;
 
     #if defined(FAN_PIN) && FAN_PIN > -1
-      case 106: //!M106 Sxxx Fan On S<speed> 0 .. 255
+
+      //! ### M106 - Set fan speed
+      // -------------------------------------------
+      case 106: // M106 Sxxx Fan On S<speed> 0 .. 255
         if (code_seen('S')){
            fanSpeed=constrain(code_value(),0,255);
         }
@@ -5805,13 +6064,19 @@ Sigma_Exit:
           fanSpeed=255;
         }
         break;
-      case 107: //M107 Fan Off
+
+      //! ### M107 - Fan off
+      // -------------------------------
+      case 107:
         fanSpeed = 0;
         break;
     #endif //FAN_PIN
 
     #if defined(PS_ON_PIN) && PS_ON_PIN > -1
-      case 80: // M80 - Turn on Power Supply
+
+      //! ### M80 - Turn on the Power Supply
+      // -------------------------------
+      case 80:
         SET_OUTPUT(PS_ON_PIN); //GND
         WRITE(PS_ON_PIN, PS_ON_AWAKE);
 
@@ -5829,7 +6094,9 @@ Sigma_Exit:
         break;
       #endif
 
-      case 81: // M81 - Turn off Power Supply
+      //! ### M81 - Turn off Power Supply
+      // --------------------------------------
+      case 81: 
         disable_heater();
         st_synchronize();
         disable_e0();
@@ -5850,12 +6117,24 @@ Sigma_Exit:
         lcd_update(0);
 	  break;
 
+    //! ### M82 - Set E axis to absolute mode
+    // ---------------------------------------
     case 82:
       axis_relative_modes[3] = false;
       break;
+
+    //! ### M83 - Set E axis to relative mode
+    // ---------------------------------------  
     case 83:
       axis_relative_modes[3] = true;
       break;
+
+    //! ### M84, M18 - Disable steppers
+    //---------------------------------------
+    //! This command can be used to set the stepper inactivity timeout (`S`) or to disable steppers (`X`,`Y`,`Z`,`E`)
+    //! 
+    //!     M84 [E<flag>] [S<seconds>] [X<flag>] [Y<flag>] [Z<flag>]  
+    //! 
     case 18: //compatibility
     case 84: // M84
       if(code_seen('S')){
@@ -5891,21 +6170,35 @@ Sigma_Exit:
 	  print_time_remaining_init();
 	  snmm_filaments_used = 0;
       break;
+
+    //! ### M85 - Set max inactive time
+    // ---------------------------------------
     case 85: // M85
       if(code_seen('S')) {
         max_inactive_time = code_value() * 1000;
       }
       break;
 #ifdef SAFETYTIMER
-	case 86: // M86 - set safety timer expiration time in seconds; M86 S0 will disable safety timer
-	  //when safety timer expires heatbed and nozzle target temperatures are set to zero
+
+  //! ### M86 - Set safety timer expiration time
+  //!
+  //! _Usage:_
+  //!     M86 S<seconds>
+  //! 
+  //! Sets the safety timer expiration time in seconds. M86 S0 will disable safety timer.
+  //! When safety timer expires, heatbed and nozzle target temperatures are set to zero.
+	case 86: 
 	  if (code_seen('S')) {
 	    safetytimer_inactive_time = code_value() * 1000;
 		safetyTimer.start();
 	  }
 	  break;
 #endif
-    case 92: // M92
+
+    //! ### M92 Set Axis steps-per-unit
+    // ---------------------------------------
+    //! Same syntax as G92
+    case 92:
       for(int8_t i=0; i < NUM_AXIS; i++)
       {
         if(code_seen(axis_codes[i]))
@@ -5926,11 +6219,17 @@ Sigma_Exit:
         }
       }
       break;
-    case 110:   //! M110 N<line number> - reset line pos
+
+    //! ### M110 - Set Line number
+    // ---------------------------------------
+    case 110:
       if (code_seen('N'))
 	    gcode_LastN = code_value_long();
     break;
-	case 113: // M113 - Get or set Host Keepalive interval
+
+  //! ### M113 - Get or set host keep-alive interval
+  // ------------------------------------------ 
+	case 113:
 		if (code_seen('S')) {
 			host_keepalive_interval = (uint8_t)code_value_short();
 //			NOMORE(host_keepalive_interval, 60);
@@ -5941,13 +6240,23 @@ Sigma_Exit:
 			SERIAL_PROTOCOLLN("");
 		}
 		break;
+
+    //! ### M115 - Firmware info
+    // --------------------------------------
+    //! Print the firmware info and capabilities
+    //! 
+    //!     M115 [V] [U<version>] 
+    //! 
+    //! Without any arguments, prints Prusa firmware version number, machine type, extruder count and UUID.
+    //! `M115 U` Checks the firmware version provided. If the firmware version provided by the U code is higher than the currently running firmware,
+    //!  pause the print for 30s and ask the user to upgrade the firmware. 
     case 115: // M115
       if (code_seen('V')) {
           // Report the Prusa version number.
           SERIAL_PROTOCOLLNRPGM(FW_VERSION_STR_P());
       } else if (code_seen('U')) {
           // Check the firmware version provided. If the firmware version provided by the U code is higher than the currently running firmware,
-          // pause the print and ask the user to upgrade the firmware.
+          // pause the print for 30s and ask the user to upgrade the firmware.
           show_upgrade_dialog_if_version_newer(++ strchr_pointer);
       } else {
           SERIAL_ECHOPGM("FIRMWARE_NAME:Prusa-Firmware ");
@@ -5962,22 +6271,43 @@ Sigma_Exit:
           SERIAL_ECHOLNPGM(MACHINE_UUID);
       }
       break;
-/*    case 117: // M117 display message
+
+    //! ### M114 - Get current position
+    // -------------------------------------
+    case 114:
+		gcode_M114();
+      break;
+
+
+
+      //! ### M117 - Set LCD Message
+      // -------------------------------------- 
+      
+      /*
+        M117 moved up to get the high priority
+
+    case 117: // M117 display message
       starpos = (strchr(strchr_pointer + 5,'*'));
       if(starpos!=NULL)
         *(starpos)='\0';
       lcd_setstatus(strchr_pointer + 5);
       break;*/
-    case 114: // M114
-		gcode_M114();
-      break;
-    case 120: //! M120 - Disable endstops
+
+    //! ### M120 - Disable endstops
+    // ----------------------------------------
+    case 120:
       enable_endstops(false) ;
       break;
-    case 121: //! M121 - Enable endstops
+
+    //! ### M121 - Enable endstops
+    // ----------------------------------------
+    case 121:
       enable_endstops(true) ;
       break;
-    case 119: // M119
+
+    //! ### M119 - Get endstop states
+    // ----------------------------------------
+    case 119:
     SERIAL_PROTOCOLRPGM(_N("Reporting endstop status"));////MSG_M119_REPORT
     SERIAL_PROTOCOLLN("");
       #if defined(X_MIN_PIN) && X_MIN_PIN > -1
@@ -6036,8 +6366,12 @@ Sigma_Exit:
       #endif
       break;
       //TODO: update for all axis, use for loop
+    
     #ifdef BLINKM
-    case 150: // M150
+
+    //! ### M150 - Set RGB(W) Color
+    // -------------------------------------------
+    case 150:
       {
         byte red;
         byte grn;
@@ -6051,6 +6385,9 @@ Sigma_Exit:
       }
       break;
     #endif //BLINKM
+
+    //! ### M200 - Set filament diameter
+    // ----------------------------------------
     case 200: // M200 D<millimeters> set filament diameter and set E axis units to cubic millimeters (use S0 to set back to millimeters).
       {
 
@@ -6089,7 +6426,10 @@ Sigma_Exit:
 		calculate_extruder_multipliers();
       }
       break;
-    case 201: // M201
+
+    //! ### M201 - Set Print Max Acceleration
+    // -------------------------------------------
+    case 201:
 		for (int8_t i = 0; i < NUM_AXIS; i++)
 		{
 			if (code_seen(axis_codes[i]))
@@ -6121,6 +6461,9 @@ Sigma_Exit:
       }
       break;
     #endif
+
+    //! ### M203 - Set Max Feedrate
+    // ---------------------------------------
     case 203: // M203 max feedrate mm/sec
 		for (int8_t i = 0; i < NUM_AXIS; i++)
 		{
@@ -6144,10 +6487,17 @@ Sigma_Exit:
 			}
 		}
 		break;
+
+    //! ### M204 - Acceleration settings
+    // ------------------------------------------
+    //! Supporting old format: 
+    //!
+    //!         M204 S[normal moves] T[filmanent only moves]
+    //!
+    //! and new format:        
+    //!
+    //!         M204 P[printing moves] R[filmanent only moves] T[travel moves] (as of now T is ignored)
     case 204:
-      //! M204 acclereration settings.
-      //!@n Supporting old format: M204 S[normal moves] T[filmanent only moves]
-      //!@n and new format:        M204 P[printing moves] R[filmanent only moves] T[travel moves] (as of now T is ignored)
       {
         if(code_seen('S')) {
           // Legacy acceleration format. This format is used by the legacy Marlin, MK2 or MK3 firmware,
@@ -6171,7 +6521,19 @@ Sigma_Exit:
         }
       }
       break;
-    case 205: //M205 advanced settings:  minimum travel speed S=while printing T=travel only,  B=minimum segment time X= maximum xy jerk, Z=maximum Z jerk
+
+    //! ### M205 - Set advanced settings
+    // --------------------------------------------- 
+    //! Set some advanced settings related to movement.
+    //!
+    //!          M205 [S] [T] [B] [X] [Y] [Z] [E]
+    /*!
+    - `S` - Minimum feedrate for print moves (unit/s)
+    - `T` - Minimum feedrate for travel moves (units/s)
+    - `B` - Minimum segment time (us)
+    - `X` - Maximum X jerk (units/s), similarly for other axes
+    */
+    case 205: 
     {
       if(code_seen('S')) cs.minimumfeedrate = code_value();
       if(code_seen('T')) cs.mintravelfeedrate = code_value();
@@ -6184,13 +6546,19 @@ Sigma_Exit:
 		if (cs.max_jerk[Y_AXIS] > DEFAULT_YJERK) cs.max_jerk[Y_AXIS] = DEFAULT_YJERK;
     }
     break;
-    case 206: // M206 additional homing offset
+
+    //! ### M206 - Set additional homing offsets
+    // ----------------------------------------------
+    case 206:
       for(int8_t i=0; i < 3; i++)
       {
         if(code_seen(axis_codes[i])) cs.add_homing[i] = code_value();
       }
       break;
     #ifdef FWRETRACT
+
+    //! ### M207 - Set firmware retraction
+    // --------------------------------------------------
     case 207: //M207 - set retract length S[positive mm] F[feedrate mm/min] Z[additional zlift/hop]
     {
       if(code_seen('S'))
@@ -6206,6 +6574,9 @@ Sigma_Exit:
         cs.retract_zlift = code_value() ;
       }
     }break;
+
+    //! ### M208 - Set retract recover length
+    // --------------------------------------------
     case 208: // M208 - set retract recover length S[positive mm surplus to the M207 S*] F[feedrate mm/min]
     {
       if(code_seen('S'))
@@ -6217,6 +6588,9 @@ Sigma_Exit:
         cs.retract_recover_feedrate = code_value()/60 ;
       }
     }break;
+
+    //! ### M209 - Enable/disable automatict retract
+    // ---------------------------------------------
     case 209: // M209 - S<1=true/0=false> enable automatic retract detect if the slicer did not support G10/11: every normal extrude-only move will be classified as retract depending on the direction.
     {
       if(code_seen('S'))
@@ -6257,6 +6631,9 @@ Sigma_Exit:
     }break;
     #endif // FWRETRACT
     #if EXTRUDERS > 1
+
+    // ### M218 - Set hotend offset
+    // ----------------------------------------
     case 218: // M218 - set hotend offset (in mm), T<extruder_number> X<offset_on_X> Y<offset_on_Y>
     {
       uint8_t extruder;
@@ -6284,6 +6661,8 @@ Sigma_Exit:
     }break;
     #endif
 
+    //! ### M220 Set feedrate percentage
+    // -----------------------------------------------
     case 220: // M220 S<factor in percent>- set speed factor override percentage
     {
       if (code_seen('B')) //backup current speed factor
@@ -6299,6 +6678,9 @@ Sigma_Exit:
       }
     }
     break;
+
+    //! ### M221 - Set extrude factor override percentage
+    // ----------------------------------------------------
     case 221: // M221 S<factor in percent>- set extrude factor override percentage
     {
       if(code_seen('S'))
@@ -6321,6 +6703,8 @@ Sigma_Exit:
     }
     break;
 
+  //! ### M226 - Wait for Pin state
+  // ------------------------------------------
 	case 226: // M226 P<pin number> S<pin state>- Wait until the specified pin reaches the state required
 	{
       if(code_seen('P')){
@@ -6374,6 +6758,9 @@ Sigma_Exit:
     break;
 
     #if NUM_SERVOS > 0
+
+    //! ### M280 - Set/Get servo position
+    // --------------------------------------------
     case 280: // M280 - set servo position absolute. P: servo index, S: angle or microseconds
       {
         int servo_index = -1;
@@ -6412,6 +6799,9 @@ Sigma_Exit:
     #endif // NUM_SERVOS > 0
 
     #if (LARGE_FLASH == true && ( BEEPER > 0 || defined(ULTRALCD) || defined(LCD_USE_I2C_BUZZER)))
+    
+    //! ### M300 - Play tone
+    // -----------------------
     case 300: // M300
     {
       int beepS = code_seen('S') ? code_value() : 110;
@@ -6419,10 +6809,7 @@ Sigma_Exit:
       if (beepS > 0)
       {
         #if BEEPER > 0
-if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
-          _tone(BEEPER, beepS);
-          _delay(beepP);
-          _noTone(BEEPER);
+          Sound_MakeCustom(beepP,beepS,false);
         #endif
       }
       else
@@ -6434,7 +6821,10 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
     #endif // M300
 
     #ifdef PIDTEMP
-    case 301: // M301
+
+    //! ### M301 - Set hotend PID
+    // ---------------------------------------
+    case 301:
       {
         if(code_seen('P')) cs.Kp = code_value();
         if(code_seen('I')) cs.Ki = scalePID_i(code_value());
@@ -6462,7 +6852,10 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
       break;
     #endif //PIDTEMP
     #ifdef PIDTEMPBED
-    case 304: // M304
+
+    //! ### M304 - Set bed PID 
+    // --------------------------------------
+    case 304:
       {
         if(code_seen('P')) cs.bedKp = code_value();
         if(code_seen('I')) cs.bedKi = scalePID_i(code_value());
@@ -6480,6 +6873,9 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
       }
       break;
     #endif //PIDTEMP
+
+    //! ### M240 - Trigger camera
+    // --------------------------------------------
     case 240: // M240  Triggers a camera by emulating a Canon RC-1 : http://www.doc-diy.net/photo/rc-1_hacked/
      {
      	#ifdef CHDK
@@ -6512,7 +6908,10 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
      }
     break;
     #ifdef PREVENT_DANGEROUS_EXTRUDE
-    case 302: // allow cold extrudes, or set the minimum extrude temperature
+
+    //! ### M302 - Allow cold extrude, or set minimum extrude temperature
+    // -------------------------------------------------------------------
+    case 302:
     {
 	  float temp = .0;
 	  if (code_seen('S')) temp=code_value();
@@ -6520,7 +6919,10 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
     }
     break;
 	#endif
-    case 303: // M303 PID autotune
+
+    //! ### M303 - PID autotune
+    // -------------------------------------
+    case 303:
     {
       float temp = 150.0;
       int e=0;
@@ -6533,17 +6935,22 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
       PID_autotune(temp, e, c);
     }
     break;
-    case 400: // M400 finish all moves
+    
+    //! ### M400 - Wait for all moves to finish
+    // -----------------------------------------
+    case 400:
     {
       st_synchronize();
     }
     break;
 
-	case 403: //! M403 set filament type (material) for particular extruder and send this information to mmu
+  //! ### M403 - Set filament type (material) for particular extruder and notify the MMU
+	// ----------------------------------------------
+  case 403:
 	{
-		//! currently three different materials are needed (default, flex and PVA)
-		//! add storing this information for different load/unload profiles etc. in the future
-		//!firmware does not wait for "ok" from mmu
+		// currently three different materials are needed (default, flex and PVA)
+		// add storing this information for different load/unload profiles etc. in the future
+		// firmware does not wait for "ok" from mmu
 		if (mmu_enabled)
 		{
 			uint8_t extruder = 255;
@@ -6555,27 +6962,41 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
 	}
 	break;
 
-    case 500: // M500 Store settings in EEPROM
+    //! ### M500 - Store settings in EEPROM
+    // -----------------------------------------
+    case 500:
     {
         Config_StoreSettings();
     }
     break;
-    case 501: // M501 Read settings from EEPROM
+
+    //! ### M501 - Read settings from EEPROM
+    // ----------------------------------------
+    case 501:
     {
         Config_RetrieveSettings();
     }
     break;
-    case 502: // M502 Revert to default settings
+
+    //! ### M502 - Revert all settings to factory default
+    // -------------------------------------------------
+    case 502:
     {
         Config_ResetDefault();
     }
     break;
-    case 503: // M503 print settings currently in memory
+
+    //! ### M503 - Repport all settings currently in memory
+    // -------------------------------------------------
+    case 503:
     {
         Config_PrintSettings();
     }
     break;
-    case 509: //M509 Force language selection
+
+    //! ### M509 - Force language selection
+    // ------------------------------------------------
+    case 509:
     {
 		lang_reset();
         SERIAL_ECHO_START;
@@ -6583,6 +7004,9 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
     }
     break;
     #ifdef ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED
+
+    //! ### M540 - Abort print on endstop hit (enable/disable)
+    // -----------------------------------------------------
     case 540:
     {
         if(code_seen('S')) abort_on_endstop_hit = code_value() > 0;
@@ -6627,6 +7051,9 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
     #endif // CUSTOM_M_CODE_SET_Z_PROBE_OFFSET
 
     #ifdef FILAMENTCHANGEENABLE
+
+    //! ### M600 - Initiate Filament change procedure
+    // --------------------------------------
     case 600: //Pause for filament change X[pos] Y[pos] Z[relative lift] E[initial retract] L[later retract distance for removal]
 	{
 		st_synchronize();
@@ -6701,20 +7128,39 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
 	}
     break;
     #endif //FILAMENTCHANGEENABLE
-	case 601: //! M601 - Pause print
+
+  //! ### M601 - Pause print
+  // -------------------------------
+	case 601:
 	{
 		cmdqueue_pop_front(); //trick because we want skip this command (M601) after restore
 		lcd_pause_print();
 	}
 	break;
 
-	case 602: { //! M602 - Resume print
+  //! ### M602 - Resume print
+  // -------------------------------
+	case 602: {
 		lcd_resume_print();
 	}
 	break;
 
+  //! ### M603 - Stop print
+  // -------------------------------
+  case 603: {
+		lcd_print_stop();
+	}
+
 #ifdef PINDA_THERMISTOR
-	case 860: // M860 - Wait for PINDA thermistor to reach target temperature.
+  //! ### M860 - Wait for extruder temperature (PINDA)
+  // --------------------------------------------------------------
+  /*! 
+      Wait for PINDA thermistor to reach target temperature
+      
+                M860 [S<target_temperature>]
+      
+  */
+	case 860: 
 	{
 		int set_target_pinda = 0;
 
@@ -6758,7 +7204,18 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
 		break;
 	}
  
-	case 861: // M861 - Set/Read PINDA temperature compensation offsets
+  //! ### M861 - Set/Get PINDA temperature compensation offsets
+  // -----------------------------------------------------------
+  /*!
+      
+        M861 [ ? | ! | Z | S<microsteps> [I<table_index>] ]
+      
+      - `?` - Print current EEPROM offset values
+      - `!` - Set factory default values
+      - `Z` - Set all values to 0 (effectively disabling PINDA temperature compensation)
+      - `S<microsteps>` `I<table_index>` - Set compensation ustep value S for compensation table index I
+  */
+	case 861:
 		if (code_seen('?')) { // ? - Print out current EEPROM offset values
 			uint8_t cal_status = calibration_status_pinda();
 			int16_t usteps = 0;
@@ -6829,14 +7286,110 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
 		break;
 
 #endif //PINDA_THERMISTOR
+   
+    //! ### M862 - Print checking
+    // ----------------------------------------------
+    /*!     
+        Checks the parameters of the printer and gcode and performs compatibility check
+          - M862.1 [ P<nozzle_diameter> | Q ]
+          - M862.2 [ P<model_code> | Q ]
+          - M862.3 [ P<model_name> | Q ]
+          - M862.4 [ P<fw_version> | Q]
+          - M862.5 [ P<gcode_level> | Q]
+
+        When run with P<> argument, the check is performed against the input value.
+        When run with Q argument, the current value is shown.
+		  
+        M862.3 accepts text identifiers of printer types too.
+        The syntax of M862.3 is (note the space between P and the printer type name and the quotes around the type):
+		
+                M862.3 P "MK3S"
+		  
+        Accepted printer type identifiers and their numeric counterparts:
+          - MK1         (100)
+          - MK2         (200)       
+          - MK2MM       (201)     
+          - MK2S        (202)      
+          - MK2SMM      (203)    
+          - MK2.5       (250)     
+          - MK2.5MMU2   (20250) 
+          - MK2.5S      (252)    
+          - MK2.5SMMU2S (20252)
+          - MK3         (300)
+          - MK3MMU2     (20300)
+          - MK3S        (302)
+          - MK3SMMU2S	(20302)
+    */
+    case 862: // M862: print checking
+          float nDummy;
+          uint8_t nCommand;
+          nCommand=(uint8_t)(modff(code_value_float(),&nDummy)*10.0+0.5);
+          switch((ClPrintChecking)nCommand)
+               {
+               case ClPrintChecking::_Nozzle:     // ~ .1
+                    uint16_t nDiameter;
+                    if(code_seen('P'))
+                         {
+                         nDiameter=(uint16_t)(code_value()*1000.0+0.5); // [,um]
+                         nozzle_diameter_check(nDiameter);
+                         }
+/*
+                    else if(code_seen('S')&&farm_mode)
+                         {
+                         nDiameter=(uint16_t)(code_value()*1000.0+0.5); // [,um]
+                         eeprom_update_byte((uint8_t*)EEPROM_NOZZLE_DIAMETER,(uint8_t)ClNozzleDiameter::_Diameter_Undef); // for correct synchronization after farm-mode exiting
+                         eeprom_update_word((uint16_t*)EEPROM_NOZZLE_DIAMETER_uM,nDiameter);
+                         }
+*/
+                    else if(code_seen('Q'))
+                         SERIAL_PROTOCOLLN((float)eeprom_read_word((uint16_t*)EEPROM_NOZZLE_DIAMETER_uM)/1000.0);
+                    break;
+               case ClPrintChecking::_Model:      // ~ .2
+                    if(code_seen('P'))
+                         {
+                         uint16_t nPrinterModel;
+                         nPrinterModel=(uint16_t)code_value_long();
+                         printer_model_check(nPrinterModel);
+                         }
+                    else if(code_seen('Q'))
+                         SERIAL_PROTOCOLLN(nPrinterType);
+                    break;
+               case ClPrintChecking::_Smodel:     // ~ .3
+                    if(code_seen('P'))
+                         printer_smodel_check(strchr_pointer);
+                    else if(code_seen('Q'))
+                         SERIAL_PROTOCOLLNRPGM(sPrinterName);
+                    break;
+               case ClPrintChecking::_Version:    // ~ .4
+                    if(code_seen('P'))
+                         fw_version_check(++strchr_pointer);
+                    else if(code_seen('Q'))
+                         SERIAL_PROTOCOLLN(FW_VERSION);
+                    break;
+               case ClPrintChecking::_Gcode:      // ~ .5
+                    if(code_seen('P'))
+                         {
+                         uint16_t nGcodeLevel;
+                         nGcodeLevel=(uint16_t)code_value_long();
+                         gcode_level_check(nGcodeLevel);
+                         }
+                    else if(code_seen('Q'))
+                         SERIAL_PROTOCOLLN(GCODE_LEVEL);
+                    break;
+               }
+    break;
 
 #ifdef LIN_ADVANCE
-    case 900: // M900: Set LIN_ADVANCE options.
+    //! ### M900 - Set Linear advance options
+    // ----------------------------------------------
+    case 900:
         gcode_M900();
     break;
 #endif
 
-    case 907: // M907 Set digital trimpot motor current using axis codes.
+    //! ### M907 - Set digital trimpot motor current using axis codes
+    // ---------------------------------------------------------------
+    case 907:
     {
 #ifdef TMC2130
         for (int i = 0; i < NUM_AXIS; i++)
@@ -6867,7 +7420,10 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
 #endif //TMC2130
     }
     break;
-    case 908: // M908 Control digital trimpot directly.
+
+    //! ### M908 - Control digital trimpot directly
+    // ---------------------------------------------------------
+    case 908:
     {
       #if defined(DIGIPOTSS_PIN) && DIGIPOTSS_PIN > -1
         uint8_t channel,current;
@@ -6880,13 +7436,17 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
 
 #ifdef TMC2130_SERVICE_CODES_M910_M918
 
-	case 910: //! M910 - TMC2130 init
+  //! ### M910 - TMC2130 init
+  // -----------------------------------------------
+	case 910:
     {
 		tmc2130_init();
     }
     break;
 
-	case 911: //! M911 - Set TMC2130 holding currents
+  //! ### M911 - Set TMC2130 holding currents
+  // -------------------------------------------------
+	case 911: 
     {
 		if (code_seen('X')) tmc2130_set_current_h(0, code_value());
 		if (code_seen('Y')) tmc2130_set_current_h(1, code_value());
@@ -6895,7 +7455,9 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
     }
     break;
 
-	case 912: //! M912 - Set TMC2130 running currents
+  //! ### M912 - Set TMC2130 running currents
+  // -----------------------------------------------
+	case 912: 
     {
 		if (code_seen('X')) tmc2130_set_current_r(0, code_value());
 		if (code_seen('Y')) tmc2130_set_current_r(1, code_value());
@@ -6903,13 +7465,18 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
         if (code_seen('E')) tmc2130_set_current_r(3, code_value());
     }
     break;
-	case 913: //! M913 - Print TMC2130 currents
+
+  //! ### M913 - Print TMC2130 currents
+  // -----------------------------
+	case 913:
     {
 		tmc2130_print_currents();
     }
     break;
 
-	case 914: //! M914 - Set normal mode
+  //! ### M914 - Set TMC2130 normal mode
+  // ------------------------------
+        case 914:
     {
 		tmc2130_mode = TMC2130_MODE_NORMAL;
 		update_mode_profile();
@@ -6917,7 +7484,9 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
     }
     break;
 
-	case 915: //! M915 - Set silent mode
+  //! ### M95 - Set TMC2130 silent mode
+  // ------------------------------
+        case 915:
     {
 		tmc2130_mode = TMC2130_MODE_SILENT;
 		update_mode_profile();
@@ -6925,7 +7494,9 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
     }
     break;
 
-	case 916: //! M916 - Set sg_thrs
+  //! ### M916 - Set TMC2130 Stallguard sensitivity threshold
+  // -------------------------------------------------------
+	case 916:
     {
 		if (code_seen('X')) tmc2130_sg_thr[X_AXIS] = code_value();
 		if (code_seen('Y')) tmc2130_sg_thr[Y_AXIS] = code_value();
@@ -6936,7 +7507,9 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
     }
     break;
 
-	case 917: //! M917 - Set TMC2130 pwm_ampl
+  //! ### M917 - Set TMC2130 PWM amplitude offset (pwm_ampl)
+  // --------------------------------------------------------------
+	case 917:
     {
 		if (code_seen('X')) tmc2130_set_pwm_ampl(0, code_value());
 		if (code_seen('Y')) tmc2130_set_pwm_ampl(1, code_value());
@@ -6945,7 +7518,9 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
     }
     break;
 
-	case 918: //! M918 - Set TMC2130 pwm_grad
+  //! ### M918 - Set TMC2130 PWM amplitude gradient (pwm_grad)
+  // -------------------------------------------------------------
+	case 918:
     {
 		if (code_seen('X')) tmc2130_set_pwm_grad(0, code_value());
 		if (code_seen('Y')) tmc2130_set_pwm_grad(1, code_value());
@@ -6956,7 +7531,10 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
 
 #endif //TMC2130_SERVICE_CODES_M910_M918
 
-    case 350: //! M350 - Set microstepping mode. Warning: Steps per unit remains unchanged. S code sets stepping mode for all drivers.
+    //! ### M350 - Set microstepping mode
+    // ---------------------------------------------------
+    //!  Warning: Steps per unit remains unchanged. S code sets stepping mode for all drivers.
+    case 350: 
     {
 	#ifdef TMC2130
 		if(code_seen('E'))
@@ -6993,7 +7571,13 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
 	#endif //TMC2130
     }
     break;
-    case 351: //! M351 - Toggle MS1 MS2 pins directly, S# determines MS1 or MS2, X# sets the pin high/low.
+
+    //! ### M351 - Toggle Microstep Pins
+    // -----------------------------------
+    //! Toggle MS1 MS2 pins directly, S# determines MS1 or MS2, X# sets the pin high/low.
+    //!
+    //!         M351 [B<0|1>] [E<0|1>] S<1|2> [X<0|1>] [Y<0|1>] [Z<0|1>] 
+    case 351:
     {
       #if defined(X_MS1_PIN) && X_MS1_PIN > -1
       if(code_seen('S')) switch((int)code_value())
@@ -7011,14 +7595,28 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
       #endif
     }
     break;
-	case 701: //! M701 - load filament
+
+  //! ### M701 - Load filament
+  // -------------------------
+	case 701:
 	{
 		if (mmu_enabled && code_seen('E'))
 			tmp_extruder = code_value();
 		gcode_M701();
 	}
 	break;
-	case 702: //! M702 [U C] -
+
+  //! ### M702 - Unload filament
+  // ------------------------
+  /*! 
+      
+          M702 [U C]
+      
+      - `U` Unload all filaments used in current print
+      - `C` Unload just current filament
+      - without any parameters unload all filaments
+  */
+	case 702:
 	{
 #ifdef SNMM
 		if (code_seen('U'))
@@ -7040,7 +7638,9 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
 	}
 	break;
 
-    case 999: // M999: Restart after being stopped
+    //! ### M999 - Restart after being stopped
+    // ------------------------------------
+    case 999:
       Stopped = false;
       lcd_reset_alert_level();
       gcode_LastN = Stopped_gcode_LastN;
@@ -7054,6 +7654,10 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
 	}
   }
   // end if(code_seen('M')) (end of M codes)
+
+  //! -----------------------------------------------------------------------------------------
+  //! T Codes
+  //! 
   //! T<extruder nr.> - select extruder in case of multi extruder printer
   //! select filament in case of MMU_V2
   //! if extruder is "?", open menu to let the user select extruder/filament
@@ -7240,46 +7844,95 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
       }
   } // end if(code_seen('T')) (end of T codes)
 
+  //! ----------------------------------------------------------------------------------------------
+
   else if (code_seen('D')) // D codes (debug)
   {
     switch((int)code_value())
     {
-	case -1: //! D-1 - Endless loop
+
+  //! ### D-1 - Endless loop
+  // -------------------
+	case -1:
 		dcode__1(); break;
 #ifdef DEBUG_DCODES
-	case 0: //! D0 - Reset
+
+  //! ### D0 - Reset
+  // -------------- 
+	case 0:
 		dcode_0(); break;
-	case 1: //! D1 - Clear EEPROM
+
+  //! ### D1 - Clear EEPROM
+  // ------------------
+	case 1:
 		dcode_1(); break;
-	case 2: //! D2 - Read/Write RAM
+
+  //! ### D2 - Read/Write RAM
+  // --------------------
+	case 2:
 		dcode_2(); break;
 #endif //DEBUG_DCODES
 #ifdef DEBUG_DCODE3
-	case 3: //! D3 - Read/Write EEPROM
+
+  //! ### D3 - Read/Write EEPROM
+  // -----------------------
+	case 3:
 		dcode_3(); break;
 #endif //DEBUG_DCODE3
 #ifdef DEBUG_DCODES
-	case 4: //! D4 - Read/Write PIN
+
+  //! ### D4 - Read/Write PIN
+  // ---------------------
+	case 4:
 		dcode_4(); break;
 #endif //DEBUG_DCODES
 #ifdef DEBUG_DCODE5
-	case 5: // D5 - Read/Write FLASH
+
+  //! ### D5 - Read/Write FLASH
+  // ------------------------
+	case 5:
 		dcode_5(); break;
 		break;
 #endif //DEBUG_DCODE5
 #ifdef DEBUG_DCODES
-	case 6: // D6 - Read/Write external FLASH
+
+  //! ### D6 - Read/Write external FLASH
+  // ---------------------------------------
+	case 6:
 		dcode_6(); break;
-	case 7: //! D7 - Read/Write Bootloader
+
+  //! ### D7 - Read/Write Bootloader
+  // -------------------------------
+	case 7:
 		dcode_7(); break;
-	case 8: //! D8 - Read/Write PINDA
+
+  //! ### D8 - Read/Write PINDA
+  // ---------------------------
+	case 8:
 		dcode_8(); break;
-	case 9: //! D9 - Read/Write ADC
+
+  // ### D9 - Read/Write ADC
+  // ------------------------
+	case 9:
 		dcode_9(); break;
-	case 10: //! D10 - XYZ calibration = OK
+
+  //! ### D10 - XYZ calibration = OK
+  // ------------------------------
+	case 10:
 		dcode_10(); break;
 #endif //DEBUG_DCODES
 #ifdef HEATBED_ANALYSIS
+
+  //! ### D80 - Bed check
+  // ---------------------
+  /*! 
+    - `E` - dimension x
+    - `F` - dimention y
+    - `G` - points_x
+    - `H` - points_y
+    - `I` - offset_x
+    - `J` - offset_y
+  */
 	case 80:
 	{
 		float dimension_x = 40;
@@ -7304,6 +7957,16 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
  		bed_check(dimension_x,dimension_y,points_x,points_y,offset_x,offset_y);
 	}break;
 
+  //! ### D81 - Bed analysis
+  // -----------------------------
+  /*! 
+    - `E` - dimension x
+    - `F` - dimention y
+    - `G` - points_x
+    - `H` - points_y
+    - `I` - offset_x
+    - `J` - offset_y
+  */
 	case 81:
 	{
 		float dimension_x = 40;
@@ -7326,7 +7989,10 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
 	
 #endif //HEATBED_ANALYSIS
 #ifdef DEBUG_DCODES
-	case 106: //D106 print measured fan speed for different pwm values
+
+  //! ### D106 print measured fan speed for different pwm values
+  // --------------------------------------------------------------
+	case 106:
 	{
 		for (int i = 255; i > 0; i = i - 5) {
 			fanSpeed = i;
@@ -7340,12 +8006,52 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
 	}break;
 
 #ifdef TMC2130
-	case 2130: //! D2130 - TMC2130
+  //! ### D2130 - TMC2130 Trinamic stepper controller
+  // ---------------------------
+
+  
+  /*!
+  
+  
+        D2130<axis><command>[subcommand][value]
+
+   - <command>:
+       - '0' current off
+       - '1' current on
+       - '+' single step
+       - * value sereval steps
+       - '-' dtto oposite direction
+       - '?' read register
+       - * "mres"
+       - * "step"
+       - * "mscnt"
+       - * "mscuract"
+       - * "wave"
+       - '!' set register
+       - * "mres"
+       - * "step"
+       - * "wave"
+       - '@' home calibrate axis
+
+    Example:
+
+    D2130E?wave ...        print extruder microstep linearity compensation curve
+
+    D2130E!wave0 ...       disable extruder linearity compensation curve, (sine curve is used)
+
+    D2130E!wave220 ...    (sin(x))^1.1 extruder microstep compensation curve used
+  */
+
+
+	case 2130:
 		dcode_2130(); break;
 #endif //TMC2130
 
 #if (defined (FILAMENT_SENSOR) && defined(PAT9125))
-	case 9125: //! D9125 - FILAMENT_SENSOR
+
+        //! ### D9125 - FILAMENT_SENSOR
+        // ---------------------------------
+	case 9125:
 		dcode_9125(); break;
 #endif //FILAMENT_SENSOR
 
@@ -7364,6 +8070,13 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
   ClearToSend();
 }
 
+
+
+  /** @defgroup GCodes G-Code List 
+  */
+
+// ---------------------------------------------------
+
 void FlushSerialRequestResend()
 {
   //char cmdbuffer[bufindr][100]="Resend:";
@@ -7717,10 +8430,7 @@ bool bInhibitFlag;
 //-//					if (degHotend0() > EXTRUDE_MINTEMP)
 if(0)
 					{
-						if ((eSoundMode == e_SOUND_MODE_LOUD) || (eSoundMode == e_SOUND_MODE_ONCE))
-							_tone(BEEPER, 1000);
-						delay_keep_alive(50);
-						_noTone(BEEPER);
+            Sound_MakeCustom(50,1000,false);
 						loading_flag = true;
 						enquecommand_front_P((PSTR("M701")));
 					}
@@ -8130,12 +8840,15 @@ static void wait_for_heater(long codenum, uint8_t extruder) {
 
 void check_babystep()
 {
-	int babystep_z;
-	EEPROM_read_B(EEPROM_BABYSTEP_Z, &babystep_z);
+	int babystep_z = eeprom_read_word(reinterpret_cast<uint16_t *>(&(EEPROM_Sheets_base->
+            s[(eeprom_read_byte(&(EEPROM_Sheets_base->active_sheet)))].z_offset)));
+
 	if ((babystep_z < Z_BABYSTEP_MIN) || (babystep_z > Z_BABYSTEP_MAX)) {
 		babystep_z = 0; //if babystep value is out of min max range, set it to 0
 		SERIAL_ECHOLNPGM("Z live adjust out of range. Setting to 0");
-		EEPROM_save_B(EEPROM_BABYSTEP_Z, &babystep_z);
+		eeprom_write_word(reinterpret_cast<uint16_t *>(&(EEPROM_Sheets_base->
+            s[(eeprom_read_byte(&(EEPROM_Sheets_base->active_sheet)))].z_offset)),
+                    babystep_z);
 		lcd_show_fullscreen_message_and_wait_P(PSTR("Z live adjust out of range. Setting to 0. Click to continue."));
 		lcd_update_enable(true);		
 	}	
@@ -8983,8 +9696,7 @@ ISR(INT4_vect) {
 	EIMSK &= ~(1 << 4); //disable INT4 interrupt to make sure that this code will be executed just once 
 	SERIAL_ECHOLNPGM("INT4");
     //fire normal uvlo only in case where EEPROM_UVLO is 0 or if IS_SD_PRINTING is 1. 
-    //Don't change || to && because in some case the printer can be moving although IS_SD_PRINTING is zero
-     if((IS_SD_PRINTING ) || (!(eeprom_read_byte((uint8_t*)EEPROM_UVLO)))) uvlo_();
+     if(PRINTER_ACTIVE && (!(eeprom_read_byte((uint8_t*)EEPROM_UVLO)))) uvlo_();
      if(eeprom_read_byte((uint8_t*)EEPROM_UVLO)) uvlo_tiny();
 }
 
@@ -9346,7 +10058,6 @@ void stop_and_save_print_to_ram(float z_move, float e_move)
 	if(!saved_extruder_relative_mode){
 		enquecommand(PSTR("M83"), true);
 	}
-	
 	//retract 45mm/s
 	// A single sprintf may not be faster, but is definitely 20B shorter
 	// than a sequence of commands building the string piece by piece
@@ -9374,10 +10085,11 @@ void stop_and_save_print_to_ram(float z_move, float e_move)
 
 //! @brief Restore print from ram
 //!
-//! Restore print saved by stop_and_save_print_to_ram(). Is blocking,
-//! waits for extruder temperature restore, then restores position and continues
-//! print moves.
-//! Internaly lcd_update() is called by wait_for_heater().
+//! Restore print saved by stop_and_save_print_to_ram(). Is blocking, restores
+//! print fan speed, waits for extruder temperature restore, then restores
+//! position and continues print moves.
+//!
+//! Internally lcd_update() is called by wait_for_heater().
 //!
 //! @param e_move
 void restore_print_from_ram_and_continue(float e_move)
@@ -9392,7 +10104,9 @@ void restore_print_from_ram_and_continue(float e_move)
 //	for (int axis = X_AXIS; axis <= E_AXIS; axis++)
 //	    current_position[axis] = st_get_position_mm(axis);
 	active_extruder = saved_active_extruder; //restore active_extruder
-	if (saved_extruder_temperature) {
+	fanSpeed = saved_fanSpeed;
+	if (degTargetHotend(saved_active_extruder) != saved_extruder_temperature)
+	{
 		setTargetHotendSafe(saved_extruder_temperature, saved_active_extruder);
 		heating_status = 1;
 		wait_for_heater(_millis(), saved_active_extruder);
@@ -9400,9 +10114,13 @@ void restore_print_from_ram_and_continue(float e_move)
 	}
 	feedrate = saved_feedrate2; //restore feedrate
 	axis_relative_modes[E_AXIS] = saved_extruder_relative_mode;
-	fanSpeed = saved_fanSpeed;
 	float e = saved_pos[E_AXIS] - e_move;
 	plan_set_e_position(e);
+  
+  #ifdef FANCHECK
+    fans_check_enabled = false;
+  #endif
+
 	//first move print head in XY to the saved position:
 	plan_buffer_line(saved_pos[X_AXIS], saved_pos[Y_AXIS], current_position[Z_AXIS], saved_pos[E_AXIS] - e_move, homing_feedrate[Z_AXIS]/13, active_extruder);
 	st_synchronize();
@@ -9413,13 +10131,16 @@ void restore_print_from_ram_and_continue(float e_move)
 	plan_buffer_line(saved_pos[X_AXIS], saved_pos[Y_AXIS], saved_pos[Z_AXIS], saved_pos[E_AXIS], 35, active_extruder);
 	st_synchronize();
 
+  #ifdef FANCHECK
+    fans_check_enabled = true;
+  #endif
+
 	memcpy(current_position, saved_pos, sizeof(saved_pos));
 	memcpy(destination, current_position, sizeof(destination));
 	if (saved_printing_type == PRINTING_TYPE_SD) { //was sd printing
 		card.setIndex(saved_sdpos);
 		sdpos_atomic = saved_sdpos;
 		card.sdprinting = true;
-		printf_P(PSTR("ok\n")); //dummy response because of octoprint is waiting for this
 	}
 	else if (saved_printing_type == PRINTING_TYPE_USB) { //was usb printing
 		gcode_LastN = saved_sdpos; //saved_sdpos was reused for storing line number when usb printing
@@ -9429,6 +10150,7 @@ void restore_print_from_ram_and_continue(float e_move)
 	else {
 		//not sd printing nor usb printing
 	}
+	printf_P(PSTR("ok\n")); //dummy response because of octoprint is waiting for this
 	lcd_setstatuspgm(_T(WELCOME_MSG));
 	saved_printing = false;
 }
@@ -9565,7 +10287,7 @@ void M600_wait_for_user(float HotendTempBckp) {
 			}
 			SET_OUTPUT(BEEPER);
 			if (counterBeep == 0) {
-				if((eSoundMode==e_SOUND_MODE_LOUD)||((eSoundMode==e_SOUND_MODE_ONCE)&&bFirst))
+				if((eSoundMode==e_SOUND_MODE_BLIND)|| (eSoundMode==e_SOUND_MODE_LOUD)||((eSoundMode==e_SOUND_MODE_ONCE)&&bFirst))
 				{
 					bFirst=false;
 					WRITE(BEEPER, HIGH);
@@ -9668,10 +10390,7 @@ void M600_load_filament() {
 #ifdef FILAMENT_SENSOR
 		if (fsensor_check_autoload())
 		{
-if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
-			_tone(BEEPER, 1000);
-			delay_keep_alive(50);
-			_noTone(BEEPER);
+      Sound_MakeCustom(50,1000,false);
 			break;
 		}
 #endif //FILAMENT_SENSOR
@@ -9687,10 +10406,7 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
 
 	M600_load_filament_movements();
 
-if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
-	_tone(BEEPER, 500);
-	delay_keep_alive(50);
-	_noTone(BEEPER);
+      Sound_MakeCustom(50,1000,false);
 
 #ifdef FSENSOR_QUALITY
 	fsensor_oq_meassure_stop();
@@ -9726,3 +10442,69 @@ void marlin_wait_for_click()
 }
 
 #define FIL_LOAD_LENGTH 60
+
+#ifdef PSU_Delta
+bool bEnableForce_z;
+
+void init_force_z()
+{
+WRITE(Z_ENABLE_PIN,Z_ENABLE_ON);
+bEnableForce_z=true;                              // "true"-value enforce "disable_force_z()" executing
+disable_force_z();
+}
+
+void check_force_z()
+{
+if(!(bEnableForce_z||eeprom_read_byte((uint8_t*)EEPROM_SILENT)))
+     init_force_z();                              // causes enforced switching into disable-state
+}
+
+void disable_force_z()
+{
+uint16_t z_microsteps=0;
+
+if(!bEnableForce_z)
+     return;                                      // motor already disabled (may be ;-p )
+bEnableForce_z=false;
+
+// alignment to full-step
+#ifdef TMC2130
+z_microsteps=tmc2130_rd_MSCNT(Z_TMC2130_CS);
+#endif // TMC2130
+planner_abort_hard();
+sei();
+plan_buffer_line(
+     current_position[X_AXIS], 
+     current_position[Y_AXIS], 
+     current_position[Z_AXIS]+float((1024-z_microsteps+7)>>4)/cs.axis_steps_per_unit[Z_AXIS], 
+     current_position[E_AXIS],
+     40, active_extruder);
+st_synchronize();
+
+// switching to silent mode
+#ifdef TMC2130
+tmc2130_mode=TMC2130_MODE_SILENT;
+update_mode_profile();
+tmc2130_init(true);
+#endif // TMC2130
+
+axis_known_position[Z_AXIS]=false; 
+}
+
+
+void enable_force_z()
+{
+if(bEnableForce_z)
+     return;                                      // motor already enabled (may be ;-p )
+bEnableForce_z=true;
+
+// mode recovering
+#ifdef TMC2130
+tmc2130_mode=eeprom_read_byte((uint8_t*)EEPROM_SILENT)?TMC2130_MODE_SILENT:TMC2130_MODE_NORMAL;
+update_mode_profile();
+tmc2130_init(true);
+#endif // TMC2130
+
+WRITE(Z_ENABLE_PIN,Z_ENABLE_ON);                  // slightly redundant ;-p
+}
+#endif // PSU_Delta

Firmware/doxyfile

@@ -2050,7 +2050,7 @@ PERLMOD_MAKEVAR_PREFIX =
 # C-preprocessor directives found in the sources and include files.
 # The default value is: YES.
 
-ENABLE_PREPROCESSING   = YES
+ENABLE_PREPROCESSING   = NO
 
 # If the MACRO_EXPANSION tag is set to YES, doxygen will expand all macro names
 # in the source code. If set to NO, only conditional compilation will be

Firmware/eeprom.cpp

@@ -0,0 +1,95 @@
+//! @file
+//! @date Jun 20, 2019
+//! @author Marek Běl
+
+#include "eeprom.h"
+#include "Marlin.h"
+
+#include <avr/eeprom.h>
+#include <stdint.h>
+
+
+#include "language.h"
+
+#if 0
+template <typename T>
+static T eeprom_read(T *address);
+
+template<>
+char eeprom_read<char>(char *address)
+{
+    return eeprom_read_byte(reinterpret_cast<uint8_t*>(address));
+}
+#endif
+
+template <typename T>
+static void eeprom_write(T *address, T value);
+
+template<>
+void eeprom_write<char>(char *addres, char value)
+{
+    eeprom_write_byte(reinterpret_cast<uint8_t*>(addres), static_cast<uint8_t>(value));
+}
+
+
+template <typename T>
+static bool eeprom_is_uninitialized(T *address);
+
+template <>
+bool eeprom_is_uninitialized<char>(char *address)
+{
+    return (0xff == eeprom_read_byte(reinterpret_cast<uint8_t*>(address)));
+}
+
+bool is_sheet_initialized(uint8_t sheet_num){
+  return (0xffff != eeprom_read_word(reinterpret_cast<uint16_t*>(&(EEPROM_Sheets_base->
+  s[sheet_num].z_offset))));
+}
+
+void eeprom_init()
+{
+    if (eeprom_read_byte((uint8_t*)EEPROM_POWER_COUNT) == 0xff) eeprom_write_byte((uint8_t*)EEPROM_POWER_COUNT, 0);
+    if (eeprom_read_byte((uint8_t*)EEPROM_CRASH_COUNT_X) == 0xff) eeprom_write_byte((uint8_t*)EEPROM_CRASH_COUNT_X, 0);
+    if (eeprom_read_byte((uint8_t*)EEPROM_CRASH_COUNT_Y) == 0xff) eeprom_write_byte((uint8_t*)EEPROM_CRASH_COUNT_Y, 0);
+    if (eeprom_read_byte((uint8_t*)EEPROM_FERROR_COUNT) == 0xff) eeprom_write_byte((uint8_t*)EEPROM_FERROR_COUNT, 0);
+    if (eeprom_read_word((uint16_t*)EEPROM_POWER_COUNT_TOT) == 0xffff) eeprom_write_word((uint16_t*)EEPROM_POWER_COUNT_TOT, 0);
+    if (eeprom_read_word((uint16_t*)EEPROM_CRASH_COUNT_X_TOT) == 0xffff) eeprom_write_word((uint16_t*)EEPROM_CRASH_COUNT_X_TOT, 0);
+    if (eeprom_read_word((uint16_t*)EEPROM_CRASH_COUNT_Y_TOT) == 0xffff) eeprom_write_word((uint16_t*)EEPROM_CRASH_COUNT_Y_TOT, 0);
+    if (eeprom_read_word((uint16_t*)EEPROM_FERROR_COUNT_TOT) == 0xffff) eeprom_write_word((uint16_t*)EEPROM_FERROR_COUNT_TOT, 0);
+
+    if (eeprom_read_word((uint16_t*)EEPROM_MMU_FAIL_TOT) == 0xffff) eeprom_update_word((uint16_t *)EEPROM_MMU_FAIL_TOT, 0);
+    if (eeprom_read_word((uint16_t*)EEPROM_MMU_LOAD_FAIL_TOT) == 0xffff) eeprom_update_word((uint16_t *)EEPROM_MMU_LOAD_FAIL_TOT, 0);
+    if (eeprom_read_byte((uint8_t*)EEPROM_MMU_FAIL) == 0xff) eeprom_update_byte((uint8_t *)EEPROM_MMU_FAIL, 0);
+    if (eeprom_read_byte((uint8_t*)EEPROM_MMU_LOAD_FAIL) == 0xff) eeprom_update_byte((uint8_t *)EEPROM_MMU_LOAD_FAIL, 0);
+    if (eeprom_read_byte(&(EEPROM_Sheets_base->active_sheet)) == 0xff) eeprom_update_byte(&(EEPROM_Sheets_base->active_sheet), 0);
+    
+    for (uint_least8_t i = 0; i < (sizeof(Sheets::s)/sizeof(Sheets::s[0])); ++i)
+    {
+        bool is_uninitialized = true;
+        for (uint_least8_t j = 0; j < (sizeof(Sheet::name)/sizeof(Sheet::name[0])); ++j)
+        {
+            if (!eeprom_is_uninitialized(&(EEPROM_Sheets_base->s[i].name[j]))) is_uninitialized = false;
+        }
+        if(is_uninitialized)
+        {
+
+            char sheet_PROGMEM_buffer[8];
+            strcpy_P(sheet_PROGMEM_buffer, (char *)pgm_read_word(&(defaultSheetNames[i])));
+            for (uint_least8_t a = 0; a < sizeof(Sheet::name); ++a){
+                eeprom_write(&(EEPROM_Sheets_base->s[i].name[a]), sheet_PROGMEM_buffer[a]);
+            }
+          
+            // When upgrading from version older version (before multiple sheets were implemented in v3.8.0)
+	    // Sheet 1 uses the previous Live adjust Z (@EEPROM_BABYSTEP_Z)
+            if(i == 0){
+                int last_babystep = eeprom_read_word((uint16_t *)EEPROM_BABYSTEP_Z);
+                eeprom_write_word(reinterpret_cast<uint16_t *>(&(EEPROM_Sheets_base->s[i].z_offset)), last_babystep);
+            }
+        }
+    }
+    check_babystep();
+}
+
+
+
+

Firmware/eeprom.h

@@ -1,6 +1,36 @@
 #ifndef EEPROM_H
 #define EEPROM_H
 
+#include <stdint.h>
+
+#ifdef __cplusplus
+void eeprom_init();
+extern bool is_sheet_initialized(uint8_t sheet_num);
+#endif
+
+
+typedef struct
+{
+    char name[7];     //!< Can be null terminated, doesn't need to be null terminated
+    int16_t z_offset; //!< Z_BABYSTEP_MIN .. Z_BABYSTEP_MAX = Z_BABYSTEP_MIN*2/1000 [mm] .. Z_BABYSTEP_MAX*2/1000 [mm]
+    uint8_t bed_temp; //!< 0 .. 254 [°C]
+    uint8_t pinda_temp; //!< 0 .. 254 [°C]
+} Sheet;
+
+typedef struct
+{
+    Sheet s[3];
+    uint8_t active_sheet;
+} Sheets;
+// sizeof(Sheets). Do not change it unless EEPROM_Sheets_base is last item in EEPROM.
+// Otherwise it would move following items.
+#define EEPROM_SHEETS_SIZEOF 34
+
+#ifdef __cplusplus
+static_assert(sizeof(Sheets) == EEPROM_SHEETS_SIZEOF, "Sizeof(Sheets) is not EEPROM_SHEETS_SIZEOF.");
+#endif
+
+#define EEPROM_EMPTY_VALUE 0xFF
 // The total size of the EEPROM is
 // 4096 for the Atmega2560
 #define EEPROM_TOP 4096
@@ -166,33 +196,22 @@
 #define EEPROM_CHECK_MODE (EEPROM_MMU_STEALTH-1) // uint8
 #define EEPROM_NOZZLE_DIAMETER (EEPROM_CHECK_MODE-1) // uint8
 #define EEPROM_NOZZLE_DIAMETER_uM (EEPROM_NOZZLE_DIAMETER-2) // uint16
-#define EEPROM_UVLO_LA_K (EEPROM_NOZZLE_DIAMETER_uM-4) // float
+#define EEPROM_CHECK_MODEL (EEPROM_NOZZLE_DIAMETER_uM-1) // uint8
+#define EEPROM_CHECK_VERSION (EEPROM_CHECK_MODEL-1) // uint8
+#define EEPROM_CHECK_GCODE (EEPROM_CHECK_VERSION-1) // uint8
 
+#define EEPROM_SHEETS_BASE (EEPROM_CHECK_GCODE - EEPROM_SHEETS_SIZEOF) // Sheets
+static Sheets * const EEPROM_Sheets_base = (Sheets*)(EEPROM_SHEETS_BASE);
+
+#define EEPROM_UVLO_LA_K (EEPROM_SHEETS_BASE-4) // float
+
+//This is supposed to point to last item to allow EEPROM overrun check. Please update when adding new items.
+#define EEPROM_LAST_ITEM EEPROM_SHEETS_BASE
 // !!!!!
 // !!!!! this is end of EEPROM section ... all updates MUST BE inserted before this mark !!!!!
 // !!!!!
 
-//TMC2130 configuration
-#define EEPROM_TMC_AXIS_SIZE  //axis configuration block size
-#define EEPROM_TMC_X (EEPROM_TMC + 0 * EEPROM_TMC_AXIS_SIZE) //X axis configuration blok
-#define EEPROM_TMC_Y (EEPROM_TMC + 1 * EEPROM_TMC_AXIS_SIZE) //Y axis
-#define EEPROM_TMC_Z (EEPROM_TMC + 2 * EEPROM_TMC_AXIS_SIZE) //Z axis
-#define EEPROM_TMC_E (EEPROM_TMC + 3 * EEPROM_TMC_AXIS_SIZE) //E axis
-//TMC2130 - X axis
-#define EEPROM_TMC_X_USTEPS_INTPOL   (EEPROM_TMC_X +  0) // 1byte, bit 0..4 USTEPS, bit 7 INTPOL
-#define EEPROM_TMC_X_PWM_AMPL        (EEPROM_TMC_X +  1) // 1byte (0..255)
-#define EEPROM_TMC_X_PWM_GRAD_FREQ   (EEPROM_TMC_X +  2) // 1byte, bit 0..3 GRAD, bit 4..5 FREQ
-#define EEPROM_TMC_X_TCOOLTHRS       (EEPROM_TMC_X +  3) // 2bytes (0..)
-#define EEPROM_TMC_X_SG_THRS         (EEPROM_TMC_X +  5) // 1byte, (-64..+63)
-#define EEPROM_TMC_X_CURRENT_H       (EEPROM_TMC_X +  6) // 1byte, (0..63)
-#define EEPROM_TMC_X_CURRENT_R       (EEPROM_TMC_X +  7) // 1byte, (0..63)
-#define EEPROM_TMC_X_HOME_SG_THRS    (EEPROM_TMC_X +  8) // 1byte, (-64..+63)
-#define EEPROM_TMC_X_HOME_CURRENT_R  (EEPROM_TMC_X +  9) // 1byte, (-64..+63)
-#define EEPROM_TMC_X_HOME_DTCOOLTHRS (EEPROM_TMC_X + 10) // 1byte (-128..+127)
-#define EEPROM_TMC_X_DTCOOLTHRS_LOW  (EEPROM_TMC_X + 11) // 1byte (-128..+127)
-#define EEPROM_TMC_X_DTCOOLTHRS_HIGH (EEPROM_TMC_X + 12) // 1byte (-128..+127)
-#define EEPROM_TMC_X_SG_THRS_LOW     (EEPROM_TMC_X + 13) // 1byte, (-64..+63)
-#define EEPROM_TMC_X_SG_THRS_HIGH    (EEPROM_TMC_X + 14) // 1byte, (-64..+63)
+
 
 // Currently running firmware, each digit stored as uint16_t.
 // The flavor differentiates a dev, alpha, beta, release candidate or a release version.
@@ -206,7 +225,9 @@
 
 #ifdef __cplusplus
 #include "ConfigurationStore.h"
-static M500_conf * const EEPROM_M500_base = reinterpret_cast<M500_conf*>(20); //offset for storing settings using M500
+static_assert(EEPROM_FIRMWARE_VERSION_END < 20, "Firmware version EEPROM address conflicts with EEPROM_M500_base");
+static constexpr M500_conf * const EEPROM_M500_base = reinterpret_cast<M500_conf*>(20); //offset for storing settings using M500
+static_assert(((sizeof(M500_conf) + 20) < EEPROM_LAST_ITEM), "M500_conf address space conflicts with previous items.");
 #endif
 
 enum

Firmware/fsensor.cpp

@@ -507,19 +507,6 @@ void fsensor_st_block_chunk(int cnt)
 	}
 }
 
-//! This ensures generating z-position at least 25mm above the heat bed.
-//! Making this a template enables changing the computation data type easily at all spots where necessary.
-//! @param current_z current z-position
-//! @return z-position at least 25mm above the heat bed plus FILAMENTCHANGE_ZADD 
-template <typename T>
-inline T fsensor_clamp_z(float current_z){
-	T z( current_z );
-	if(z < T(25)){ // make sure the compiler understands, that the constant 25 is of correct type
-		// - necessary for uint8_t -> results in shorter code
-		z = T(25); // move to at least 25mm above heat bed
-	}
-	return z + T(FILAMENTCHANGE_ZADD); // always move above the printout by FILAMENTCHANGE_ZADD (default 2mm)	
-}
 
 //! Common code for enqueing M600 and supplemental codes into the command queue.
 //! Used both for the IR sensor and the PAT9125
@@ -530,22 +517,6 @@ void fsensor_enque_M600(){
 	enquecommand_front_P(PSTR("PRUSA fsensor_recover"));
 	fsensor_m600_enqueued = true;
 	enquecommand_front_P((PSTR("M600")));
-#define xstr(a) str(a)
-#define str(a) #a
-	static const char gcodeMove[] PROGMEM = 
-			"G1 X" xstr(FILAMENTCHANGE_XPOS) 
-			" Y" xstr(FILAMENTCHANGE_YPOS) 
-			" Z%u";
-#undef str
-#undef xstr
-	char buf[32];
-	// integer arithmetics is far shorter, I don't need a precise float position here, just move a bit above
-	// 8bit arithmetics in fsensor_clamp_z is 10B shorter than 16bit (not talking about float ;) ) 
-	// The compile-time static_assert here ensures, that the computation gets enough bits in case of Z-range too high,
-	// i.e. makes the user change the data type, which also results in larger code
-	static_assert(Z_MAX_POS < (255 - FILAMENTCHANGE_ZADD), "Z-range too high, change fsensor_clamp_z<uint8_t> to <uint16_t>");
-	sprintf_P(buf, gcodeMove, fsensor_clamp_z<uint8_t>(current_position[Z_AXIS]) );
-	enquecommand_front(buf, false);
 }
 
 //! @brief filament sensor update (perform M600 on filament runout)

Firmware/heatbed_pwm.cpp

@@ -0,0 +1,109 @@
+#include <avr/io.h>
+#include <avr/interrupt.h>
+#include "io_atmega2560.h"
+
+// All this is about silencing the heat bed, as it behaves like a loudspeaker.
+// Basically, we want the PWM heating switched at 30Hz (or so) which is a well ballanced
+// frequency for both power supply units (i.e. both PSUs are reasonably silent).
+// The only trouble is the rising or falling edge of bed heating - that creates an audible click.
+// This audible click may be suppressed by making the rising or falling edge NOT sharp.
+// Of course, making non-sharp edges in digital technology is not easy, but there is a solution.
+// It is possible to do a fast PWM sequence with duty starting from 0 to 255.
+// Doing this at higher frequency than the bed "loudspeaker" can handle makes the click barely audible.
+// Technically:
+// timer0 is set to fast PWM mode at 62.5kHz (timer0 is linked to the bed heating pin) (zero prescaler)
+// To keep the bed switching at 30Hz - we don't want the PWM running at 62kHz all the time 
+// since it would burn the heatbed's MOSFET:
+// 16MHz/256 levels of PWM duty gives us 62.5kHz
+// 62.5kHz/256 gives ~244Hz, that is still too fast - 244/8 gives ~30Hz, that's what we need
+// So the automaton runs atop of inner 8 (or 16) cycles.
+// The finite automaton is running in the ISR(TIMER0_OVF_vect)
+
+///! Definition off finite automaton states
+enum class States : uint8_t {
+  ZERO = 0,
+  RISE = 1,
+  ONE = 2,
+  FALL = 3
+};
+
+///! State table for the inner part of the finite automaton
+///! Basically it specifies what shall happen if the outer automaton is requesting setting the heat pin to 0 (OFF) or 1 (ON)
+///! ZERO: steady 0 (OFF), no change for the whole period
+///! RISE: 8 (16) fast PWM cycles with increasing duty up to steady ON
+///! ONE:  steady 1 (ON), no change for the whole period 
+///! FALL: 8 (16) fast PWM cycles with decreasing duty down to steady OFF
+///! @@TODO move it into progmem
+static States stateTable[4*2] = {
+// off             on
+States::ZERO,      States::RISE, // ZERO
+States::FALL,      States::ONE,  // RISE
+States::FALL,      States::ONE,  // ONE
+States::ZERO,      States::RISE  // FALL
+};
+
+///! Inner states of the finite automaton
+static States state = States::ZERO;
+
+///! Inner and outer PWM counters
+static uint8_t outer = 0;
+static uint8_t inner = 0;
+static uint8_t pwm = 0;
+
+///! the slow PWM duty for the next 30Hz cycle
+///! Set in the whole firmware at various places
+extern unsigned char soft_pwm_bed;
+
+/// Fine tuning of automaton cycles
+#if 1
+static const uint8_t innerMax = 16;
+static const uint8_t innerShift = 4;
+#else
+static const uint8_t innerMax = 8;
+static const uint8_t innerShift = 5;
+#endif
+
+ISR(TIMER0_OVF_vect)          // timer compare interrupt service routine
+{
+  if( inner ){
+    switch(state){
+    case States::ZERO:
+      OCR0B = 255;
+	  // Commenting the following code saves 6B, but it is left here for reference
+	  // It is not necessary to set it all over again, because we can only get into the ZERO state from the FALL state (which sets this register)
+//       TCCR0A |= (1 << COM0B1) | (1 << COM0B0);
+      break;
+    case States::RISE:
+      OCR0B = (innerMax - inner) << innerShift;
+//       TCCR0A |= (1 << COM0B1); // this bit is always 1
+      TCCR0A &= ~(1 << COM0B0);
+      break;  
+    case States::ONE:
+      OCR0B = 255;
+	  // again - may be skipped, because we get into the ONE state only from RISE (which sets this register)
+//       TCCR0A |= (1 << COM0B1);
+       TCCR0A &= ~(1 << COM0B0);
+      break;
+    case States::FALL:
+      OCR0B = (innerMax - inner) << innerShift; // this is the same as in RISE, because now we are setting the zero part of duty due to inverting mode
+      // must switch to inverting mode already here, because it takes a whole PWM cycle and it would make a "1" at the end of this pwm cycle
+	  TCCR0A |= /*(1 << COM0B1) |*/ (1 << COM0B0); 
+      break;
+    }
+    --inner;
+  } else {
+    if( ! outer ){ // at the end of 30Hz PWM period
+      // synchro is not needed (almost), soft_pwm_bed is just 1 byte, 1-byte write instruction is atomic
+      pwm = soft_pwm_bed << 1;
+    }
+	if( pwm > outer || pwm >= 254 ){
+      // soft_pwm_bed has a range of 0-127, that why a <<1 is done here. That also means that we may get only up to 254 which we want to be full-time 1 (ON)
+      state = stateTable[ uint8_t(state) * 2 + 1 ];
+    } else {
+      // switch OFF
+      state = stateTable[ uint8_t(state) * 2 + 0 ];
+    }
+    ++outer;
+    inner = innerMax;
+  }
+}

Firmware/io_atmega2560.h

@@ -368,6 +368,7 @@
 #define PIN_SET(pin) PORT(pin) |= __MSK(pin)
 #define PIN_VAL(pin, val) if (val) PIN_SET(pin); else PIN_CLR(pin);
 #define PIN_GET(pin) (PIN(pin) & __MSK(pin))
+#define PIN_INQ(pin) (PORT(pin) & __MSK(pin))
 
 
 #endif //_IO_ATMEGA2560

Firmware/lcd.cpp

@@ -10,12 +10,19 @@
 #include "Configuration.h"
 #include "pins.h"
 #include <binary.h>
-//#include <Arduino.h>
+#include <Arduino.h>
 #include "Marlin.h"
 #include "fastio.h"
 //-//
 #include "sound.h"
 
+#define LCD_DEFAULT_DELAY 100
+
+#if (defined(LCD_PINS_D0) && defined(LCD_PINS_D1) && defined(LCD_PINS_D2) && defined(LCD_PINS_D3))
+	#define LCD_8BIT
+#endif
+
+// #define VT100
 
 // commands
 #define LCD_CLEARDISPLAY 0x01
@@ -55,242 +62,204 @@
 #define LCD_5x10DOTS 0x04
 #define LCD_5x8DOTS 0x00
 
+// bitmasks for flag argument settings
+#define LCD_RS_FLAG 0x01
+#define LCD_HALF_FLAG 0x02
 
 FILE _lcdout; // = {0}; Global variable is always zero initialized, no need to explicitly state that.
 
+uint8_t lcd_displayfunction = 0;
+uint8_t lcd_displaycontrol = 0;
+uint8_t lcd_displaymode = 0;
 
-uint8_t lcd_rs_pin; // LOW: command.  HIGH: character.
-uint8_t lcd_rw_pin; // LOW: write to LCD.  HIGH: read from LCD.
-uint8_t lcd_enable_pin; // activated by a HIGH pulse.
-uint8_t lcd_data_pins[8];
-
-uint8_t lcd_displayfunction;
-uint8_t lcd_displaycontrol;
-uint8_t lcd_displaymode;
-
-uint8_t lcd_numlines;
 uint8_t lcd_currline;
 
+#ifdef VT100
 uint8_t lcd_escape[8];
-
-
-void lcd_pulseEnable(void)
-{
-	digitalWrite(lcd_enable_pin, LOW);
-	delayMicroseconds(1);    
-	digitalWrite(lcd_enable_pin, HIGH);
-	delayMicroseconds(1);    // enable pulse must be >450ns
-	digitalWrite(lcd_enable_pin, LOW);
-	delayMicroseconds(100);   // commands need > 37us to settle
-}
-
-void lcd_write4bits(uint8_t value)
-{
-	for (int i = 0; i < 4; i++)
-	{
-		pinMode(lcd_data_pins[i], OUTPUT);
-		digitalWrite(lcd_data_pins[i], (value >> i) & 0x01);
-	}
-	lcd_pulseEnable();
-}
-
-void lcd_write8bits(uint8_t value)
-{
-	for (int i = 0; i < 8; i++)
-	{
-		pinMode(lcd_data_pins[i], OUTPUT);
-		digitalWrite(lcd_data_pins[i], (value >> i) & 0x01);
-	}
+#endif
+
+static void lcd_display(void);
+
+#if 0
+static void lcd_no_display(void);
+static void lcd_no_cursor(void);
+static void lcd_cursor(void);
+static void lcd_no_blink(void);
+static void lcd_blink(void);
+static void lcd_scrollDisplayLeft(void);
+static void lcd_scrollDisplayRight(void);
+static void lcd_leftToRight(void);
+static void lcd_rightToLeft(void);
+static void lcd_autoscroll(void);
+static void lcd_no_autoscroll(void);
+#endif
+
+#ifdef VT100
+void lcd_escape_write(uint8_t chr);
+#endif
+
+static void lcd_pulseEnable(void)
+{  
+	WRITE(LCD_PINS_ENABLE,HIGH);
+	_delay_us(1);    // enable pulse must be >450ns
+	WRITE(LCD_PINS_ENABLE,LOW);
+}
+
+static void lcd_writebits(uint8_t value)
+{
+#ifdef LCD_8BIT
+	WRITE(LCD_PINS_D0, value & 0x01);
+	WRITE(LCD_PINS_D1, value & 0x02);
+	WRITE(LCD_PINS_D2, value & 0x04);
+	WRITE(LCD_PINS_D3, value & 0x08);
+#endif
+	WRITE(LCD_PINS_D4, value & 0x10);
+	WRITE(LCD_PINS_D5, value & 0x20);
+	WRITE(LCD_PINS_D6, value & 0x40);
+	WRITE(LCD_PINS_D7, value & 0x80);
+	
 	lcd_pulseEnable();
 }
 
-// write either command or data, with automatic 4/8-bit selection
-void lcd_send(uint8_t value, uint8_t mode)
+static void lcd_send(uint8_t data, uint8_t flags, uint16_t duration = LCD_DEFAULT_DELAY)
 {
-	digitalWrite(lcd_rs_pin, mode);
-	// if there is a RW pin indicated, set it low to Write
-	if (lcd_rw_pin != 255) digitalWrite(lcd_rw_pin, LOW);
-	if (lcd_displayfunction & LCD_8BITMODE)
-		lcd_write8bits(value); 
-	else
+	WRITE(LCD_PINS_RS,flags&LCD_RS_FLAG);
+	_delay_us(5);
+	lcd_writebits(data);
+#ifndef LCD_8BIT
+	if (!(flags & LCD_HALF_FLAG))
 	{
-		lcd_write4bits(value>>4);
-		lcd_write4bits(value);
+		_delay_us(LCD_DEFAULT_DELAY);
+		lcd_writebits(data<<4);
 	}
+#endif
+	delayMicroseconds(duration);
 }
 
-void lcd_command(uint8_t value)
+static void lcd_command(uint8_t value, uint16_t delayExtra = 0)
 {
-	lcd_send(value, LOW);
+	lcd_send(value, LOW, LCD_DEFAULT_DELAY + delayExtra);
 }
 
-void lcd_clear(void);
-void lcd_home(void);
-void lcd_no_display(void);
-void lcd_display(void);
-void lcd_no_cursor(void);
-void lcd_cursor(void);
-void lcd_no_blink(void);
-void lcd_blink(void);
-void lcd_scrollDisplayLeft(void);
-void lcd_scrollDisplayRight(void);
-void lcd_leftToRight(void);
-void lcd_rightToLeft(void);
-void lcd_autoscroll(void);
-void lcd_no_autoscroll(void);
-void lcd_set_cursor(uint8_t col, uint8_t row);
-void lcd_createChar_P(uint8_t location, const uint8_t* charmap);
-
-uint8_t lcd_escape_write(uint8_t chr);
-
-uint8_t lcd_write(uint8_t value)
+static void lcd_write(uint8_t value)
 {
 	if (value == '\n')
 	{
 		if (lcd_currline > 3) lcd_currline = -1;
 		lcd_set_cursor(0, lcd_currline + 1); // LF
-		return 1;
+		return;
+	}
+	#ifdef VT100
+	if (lcd_escape[0] || (value == 0x1b)){
+		lcd_escape_write(value);
+		return;
 	}
-	if (lcd_escape[0] || (value == 0x1b))
-		return lcd_escape_write(value);
+	#endif
 	lcd_send(value, HIGH);
-	return 1; // assume sucess
 }
 
-static void lcd_begin(uint8_t lines, uint8_t dotsize, uint8_t clear)
+static void lcd_begin(uint8_t clear)
 {
-	if (lines > 1) lcd_displayfunction |= LCD_2LINE;
-	lcd_numlines = lines;
 	lcd_currline = 0;
-	// for some 1 line displays you can select a 10 pixel high font
-	if ((dotsize != 0) && (lines == 1)) lcd_displayfunction |= LCD_5x10DOTS;
-	// SEE PAGE 45/46 FOR INITIALIZATION SPECIFICATION!
-	// according to datasheet, we need at least 40ms after power rises above 2.7V
-	// before sending commands. Arduino can turn on way befer 4.5V so we'll wait 50
-	_delay_us(50000); 
-	// Now we pull both RS and R/W low to begin commands
-	digitalWrite(lcd_rs_pin, LOW);
-	digitalWrite(lcd_enable_pin, LOW);
-	if (lcd_rw_pin != 255)
-		digitalWrite(lcd_rw_pin, LOW);
-	//put the LCD into 4 bit or 8 bit mode
-	if (!(lcd_displayfunction & LCD_8BITMODE))
-	{
-		// this is according to the hitachi HD44780 datasheet
-		// figure 24, pg 46
-		// we start in 8bit mode, try to set 4 bit mode
-		lcd_write4bits(0x03);
-		_delay_us(4500); // wait min 4.1ms
-		// second try
-		lcd_write4bits(0x03);
-		_delay_us(4500); // wait min 4.1ms
-		// third go!
-		lcd_write4bits(0x03); 
-		_delay_us(150);
-		// finally, set to 4-bit interface
-		lcd_write4bits(0x02); 
-	}
-	else
-	{
-		// this is according to the hitachi HD44780 datasheet
-		// page 45 figure 23
-		// Send function set command sequence
-		lcd_command(LCD_FUNCTIONSET | lcd_displayfunction);
-		_delay_us(4500);  // wait more than 4.1ms
-		// second try
-		lcd_command(LCD_FUNCTIONSET | lcd_displayfunction);
-		_delay_us(150);
-		// third go
-		lcd_command(LCD_FUNCTIONSET | lcd_displayfunction);
-	}
-	// finally, set # lines, font size, etc.
-	lcd_command(LCD_FUNCTIONSET | lcd_displayfunction);  
-	_delay_us(60);
+
+	lcd_send(LCD_FUNCTIONSET | LCD_8BITMODE, LOW | LCD_HALF_FLAG, 4500); // wait min 4.1ms
+	// second try
+	lcd_send(LCD_FUNCTIONSET | LCD_8BITMODE, LOW | LCD_HALF_FLAG, 150);
+	// third go!
+	lcd_send(LCD_FUNCTIONSET | LCD_8BITMODE, LOW | LCD_HALF_FLAG, 150);
+#ifndef LCD_8BIT
+	// set to 4-bit interface
+	lcd_send(LCD_FUNCTIONSET | LCD_4BITMODE, LOW | LCD_HALF_FLAG, 150);
+#endif
+
+	// finally, set # lines, font size, etc.0
+	lcd_command(LCD_FUNCTIONSET | lcd_displayfunction);
 	// turn the display on with no cursor or blinking default
-	lcd_displaycontrol = LCD_DISPLAYON | LCD_CURSOROFF | LCD_BLINKOFF;  
+	lcd_displaycontrol = LCD_CURSOROFF | LCD_BLINKOFF;  
 	lcd_display();
-	_delay_us(60);
 	// clear it off
 	if (clear) lcd_clear();
-	_delay_us(3000);
 	// Initialize to default text direction (for romance languages)
 	lcd_displaymode = LCD_ENTRYLEFT | LCD_ENTRYSHIFTDECREMENT;
 	// set the entry mode
 	lcd_command(LCD_ENTRYMODESET | lcd_displaymode);
-	_delay_us(60);
+	
+	#ifdef VT100
 	lcd_escape[0] = 0;
+	#endif
 }
 
-int lcd_putchar(char c, FILE *)
+static void lcd_putchar(char c, FILE *)
 {
 	lcd_write(c);
-	return 0;
 }
 
 void lcd_init(void)
 {
-	uint8_t fourbitmode = 1;
-	lcd_rs_pin = LCD_PINS_RS;
-	lcd_rw_pin = 255;
-	lcd_enable_pin = LCD_PINS_ENABLE;
-	lcd_data_pins[0] = LCD_PINS_D4;
-	lcd_data_pins[1] = LCD_PINS_D5;
-	lcd_data_pins[2] = LCD_PINS_D6;
-	lcd_data_pins[3] = LCD_PINS_D7; 
-	lcd_data_pins[4] = 0;
-	lcd_data_pins[5] = 0;
-	lcd_data_pins[6] = 0;
-	lcd_data_pins[7] = 0;
-	pinMode(lcd_rs_pin, OUTPUT);
-	// we can save 1 pin by not using RW. Indicate by passing 255 instead of pin#
-	if (lcd_rw_pin != 255) pinMode(lcd_rw_pin, OUTPUT);
-	pinMode(lcd_enable_pin, OUTPUT);
-	if (fourbitmode) lcd_displayfunction = LCD_4BITMODE | LCD_1LINE | LCD_5x8DOTS;
-	else lcd_displayfunction = LCD_8BITMODE | LCD_1LINE | LCD_5x8DOTS;
-	lcd_begin(LCD_HEIGHT, LCD_5x8DOTS, 1);
-	//lcd_clear();
+	WRITE(LCD_PINS_ENABLE,LOW);
+	SET_OUTPUT(LCD_PINS_RS);
+	SET_OUTPUT(LCD_PINS_ENABLE);
+
+#ifdef LCD_8BIT
+	SET_OUTPUT(LCD_PINS_D0);
+	SET_OUTPUT(LCD_PINS_D1);
+	SET_OUTPUT(LCD_PINS_D2);
+	SET_OUTPUT(LCD_PINS_D3);
+#endif
+	SET_OUTPUT(LCD_PINS_D4);
+	SET_OUTPUT(LCD_PINS_D5);
+	SET_OUTPUT(LCD_PINS_D6);
+	SET_OUTPUT(LCD_PINS_D7);
+	
+#ifdef LCD_8BIT
+	lcd_displayfunction |= LCD_8BITMODE;
+#endif
+	lcd_displayfunction |= LCD_2LINE;
+	_delay_us(50000); 
+	lcd_begin(1); //first time init
 	fdev_setup_stream(lcdout, lcd_putchar, NULL, _FDEV_SETUP_WRITE); //setup lcdout stream
 }
 
 void lcd_refresh(void)
 {
-    lcd_begin(LCD_HEIGHT, LCD_5x8DOTS, 1);
+    lcd_begin(1);
     lcd_set_custom_characters();
 }
 
 void lcd_refresh_noclear(void)
 {
-    lcd_begin(LCD_HEIGHT, LCD_5x8DOTS, 0);
+    lcd_begin(0);
     lcd_set_custom_characters();
 }
 
-
-
 void lcd_clear(void)
 {
-	lcd_command(LCD_CLEARDISPLAY);  // clear display, set cursor position to zero
-	_delay_us(1600);  // this command takes a long time
+	lcd_command(LCD_CLEARDISPLAY, 1600);  // clear display, set cursor position to zero
+	lcd_currline = 0;
 }
 
 void lcd_home(void)
 {
-	lcd_command(LCD_RETURNHOME);  // set cursor position to zero
-	_delay_us(1600);  // this command takes a long time!
+	lcd_command(LCD_RETURNHOME, 1600);  // set cursor position to zero
+	lcd_currline = 0;
 }
 
 // Turn the display on/off (quickly)
-void lcd_no_display(void)
+void lcd_display(void)
 {
-	lcd_displaycontrol &= ~LCD_DISPLAYON;
-	lcd_command(LCD_DISPLAYCONTROL | lcd_displaycontrol);
+    lcd_displaycontrol |= LCD_DISPLAYON;
+    lcd_command(LCD_DISPLAYCONTROL | lcd_displaycontrol);
 }
 
-void lcd_display(void)
+#if 0
+void lcd_no_display(void)
 {
-	lcd_displaycontrol |= LCD_DISPLAYON;
+	lcd_displaycontrol &= ~LCD_DISPLAYON;
 	lcd_command(LCD_DISPLAYCONTROL | lcd_displaycontrol);
 }
+#endif
 
+#ifdef VT100 //required functions for VT100
 // Turns the underline cursor on/off
 void lcd_no_cursor(void)
 {
@@ -303,7 +272,9 @@ void lcd_cursor(void)
 	lcd_displaycontrol |= LCD_CURSORON;
 	lcd_command(LCD_DISPLAYCONTROL | lcd_displaycontrol);
 }
+#endif
 
+#if 0
 // Turn on and off the blinking cursor
 void lcd_no_blink(void)
 {
@@ -355,12 +326,13 @@ void lcd_no_autoscroll(void)
 	lcd_displaymode &= ~LCD_ENTRYSHIFTINCREMENT;
 	lcd_command(LCD_ENTRYMODESET | lcd_displaymode);
 }
+#endif
 
 void lcd_set_cursor(uint8_t col, uint8_t row)
 {
 	int row_offsets[] = { 0x00, 0x40, 0x14, 0x54 };
-	if ( row >= lcd_numlines )
-		row = lcd_numlines-1;    // we count rows starting w/0
+	if (row >= LCD_HEIGHT)
+		row = LCD_HEIGHT - 1;    // we count rows starting w/0
 	lcd_currline = row;  
 	lcd_command(LCD_SETDDRAMADDR | (col + row_offsets[row]));
 }
@@ -375,12 +347,14 @@ void lcd_createChar_P(uint8_t location, const uint8_t* charmap)
     lcd_send(pgm_read_byte(&charmap[i]), HIGH);
 }
 
+#ifdef VT100
+
 //Supported VT100 escape codes:
 //EraseScreen  "\x1b[2J"
 //CursorHome   "\x1b[%d;%dH"
 //CursorShow   "\x1b[?25h"
 //CursorHide   "\x1b[?25l"
-uint8_t lcd_escape_write(uint8_t chr)
+void lcd_escape_write(uint8_t chr)
 {
 #define escape_cnt (lcd_escape[0])        //escape character counter
 #define is_num_msk (lcd_escape[1])        //numeric character bit mask
@@ -410,26 +384,26 @@ uint8_t lcd_escape_write(uint8_t chr)
 	switch (escape_cnt++)
 	{
 	case 0:
-		if (chr == 0x1b) return 1;  // escape = "\x1b"
+		if (chr == 0x1b) return;  // escape = "\x1b"
 		break;
 	case 1:
 		is_num_msk = 0x00; // reset 'is number' bit mask
-		if (chr == '[') return 1; // escape = "\x1b["
+		if (chr == '[') return; // escape = "\x1b["
 		break;
 	case 2:
 		switch (chr)
 		{
-		case '2': return 1; // escape = "\x1b[2"
-		case '?': return 1; // escape = "\x1b[?"
+		case '2': return; // escape = "\x1b[2"
+		case '?': return; // escape = "\x1b[?"
 		default:
-			if (chr_is_num) return 1; // escape = "\x1b[%1d"
+			if (chr_is_num) return; // escape = "\x1b[%1d"
 		}
 		break;
 	case 3:
 		switch (lcd_escape[2])
 		{
 		case '?': // escape = "\x1b[?"
-			if (chr == '2') return 1; // escape = "\x1b[?2"
+			if (chr == '2') return; // escape = "\x1b[?2"
 			break;
 		case '2':
 			if (chr == 'J') // escape = "\x1b[2J"
@@ -438,20 +412,20 @@ uint8_t lcd_escape_write(uint8_t chr)
 			if (e_2_is_num && // escape = "\x1b[%1d"
 				((chr == ';') || // escape = "\x1b[%1d;"
 				chr_is_num)) // escape = "\x1b[%2d"
-				return 1;
+				return;
 		}
 		break;
 	case 4:
 		switch (lcd_escape[2])
 		{
 		case '?': // "\x1b[?"
-			if ((lcd_escape[3] == '2') && (chr == '5')) return 1; // escape = "\x1b[?25"
+			if ((lcd_escape[3] == '2') && (chr == '5')) return; // escape = "\x1b[?25"
 			break;
 		default:
 			if (e_2_is_num) // escape = "\x1b[%1d"
 			{
-				if ((lcd_escape[3] == ';') && chr_is_num) return 1; // escape = "\x1b[%1d;%1d"
-				else if (e_3_is_num && (chr == ';')) return 1; // escape = "\x1b[%2d;"
+				if ((lcd_escape[3] == ';') && chr_is_num) return; // escape = "\x1b[%1d;%1d"
+				else if (e_3_is_num && (chr == ';')) return; // escape = "\x1b[%2d;"
 			}
 		}
 		break;
@@ -478,10 +452,10 @@ uint8_t lcd_escape_write(uint8_t chr)
 					if (chr == 'H') // escape = "\x1b%1d;%1dH"
 						lcd_set_cursor(e4_num, e2_num); // CursorHome
 					else if (chr_is_num)
-						return 1; // escape = "\x1b%1d;%2d"
+						return; // escape = "\x1b%1d;%2d"
 				}
 				else if (e_3_is_num && (lcd_escape[4] == ';') && chr_is_num)
-					return 1; // escape = "\x1b%2d;%1d"
+					return; // escape = "\x1b%2d;%1d"
 			}
 		}
 		break;
@@ -495,7 +469,7 @@ uint8_t lcd_escape_write(uint8_t chr)
 				if (chr == 'H') // escape = "\x1b%2d;%1dH"
 					lcd_set_cursor(e5_num, e23_num); // CursorHome
 				else if (chr_is_num) // "\x1b%2d;%2d"
-					return 1;
+					return;
 			}
 		}
 		break;
@@ -506,10 +480,9 @@ uint8_t lcd_escape_write(uint8_t chr)
 		break;
 	}
 	escape_cnt = 0; // reset escape
-	return 1; // assume sucess
 }
 
-
+#endif //VT100
 
 
 int lcd_putc(int c)
@@ -648,16 +621,6 @@ void lcd_printFloat(double number, uint8_t digits)
 }
 
 
-
-
-
-
-
-
-
-
-
-
 uint8_t lcd_draw_update = 2;
 int32_t lcd_encoder = 0;
 uint8_t lcd_encoder_bits = 0;
@@ -704,16 +667,13 @@ uint8_t lcd_clicked(void)
 
 void lcd_beeper_quick_feedback(void)
 {
-	SET_OUTPUT(BEEPER);
 //-//
 Sound_MakeSound(e_SOUND_TYPE_ButtonEcho);
 /*
 	for(int8_t i = 0; i < 10; i++)
 	{
-		WRITE(BEEPER,HIGH);
-		delayMicroseconds(100);
-		WRITE(BEEPER,LOW);
-		delayMicroseconds(100);
+		Sound_MakeCustom(100,0,false);
+		_delay_us(100);
 	}
 */
 }
@@ -725,13 +685,6 @@ void lcd_quick_feedback(void)
   lcd_beeper_quick_feedback();
 }
 
-
-
-
-
-
-
-
 void lcd_update(uint8_t lcdDrawUpdateOverride)
 {
 	if (lcd_draw_update < lcdDrawUpdateOverride)

Firmware/lcd.h

@@ -11,8 +11,7 @@
 extern FILE _lcdout;
 
 #define lcdout (&_lcdout)
-extern int lcd_putchar(char c, FILE *stream);
-
+extern void lcd_putchar(char c, FILE *stream);
 
 extern void lcd_init(void);
 
@@ -20,13 +19,10 @@ extern void lcd_refresh(void);
 
 extern void lcd_refresh_noclear(void);
 
-
-
 extern void lcd_clear(void);
 
 extern void lcd_home(void);
 
-
 /*extern void lcd_no_display(void);
 extern void lcd_display(void);
 extern void lcd_no_blink(void);
@@ -45,7 +41,6 @@ extern void lcd_set_cursor(uint8_t col, uint8_t row);
 extern void lcd_createChar_P(uint8_t, const uint8_t*);
 
 
-
 extern int lcd_putc(int c);
 extern int lcd_puts_P(const char* str);
 extern int lcd_puts_at_P(uint8_t c, uint8_t r, const char* str);
@@ -66,7 +61,9 @@ extern void lcd_print(double, int = 2);
 
 //! @brief Clear screen
 #define ESC_2J     "\x1b[2J"
+//! @brief Show cursor
 #define ESC_25h    "\x1b[?25h"
+//! @brief Hide cursor
 #define ESC_25l    "\x1b[?25l"
 //! @brief Set cursor to
 //! @param c column
@@ -118,9 +115,6 @@ extern lcd_lcdupdate_func_t lcd_lcdupdate_func;
 
 
 
-
-
-
 extern uint8_t lcd_clicked(void);
 
 extern void lcd_beeper_quick_feedback(void);
@@ -128,13 +122,6 @@ extern void lcd_beeper_quick_feedback(void);
 //Cause an LCD refresh, and give the user visual or audible feedback that something has happened
 extern void lcd_quick_feedback(void);
 
-
-
-
-
-
-
-
 extern void lcd_update(uint8_t lcdDrawUpdateOverride);
 
 extern void lcd_update_enable(uint8_t enabled);
@@ -165,29 +152,6 @@ private:
 };
 
 
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-/**
-* Implementation of the LCD display routines for a Hitachi HD44780 display. These are common LCD character displays.
-* When selecting the Russian language, a slightly different LCD implementation is used to handle UTF8 characters.
-**/
-
-
 ////////////////////////////////////
 // Setup button and encode mappings for each panel (into 'lcd_buttons' variable
 //
@@ -223,8 +187,6 @@ private:
 #define encrot3 1
 
 
-
-
 //Custom characters defined in the first 8 characters of the LCD
 #define LCD_STR_BEDTEMP     "\x00"
 #define LCD_STR_DEGREE      "\x01"

Firmware/menu.cpp

@@ -11,8 +11,7 @@
 #include "ultralcd.h"
 #include "language.h"
 #include "static_assert.h"
-
-
+#include "sound.h"
 
 extern int32_t lcd_encoder;
 
@@ -65,7 +64,11 @@ void menu_goto(menu_func_t menu, const uint32_t encoder, const bool feedback, bo
 void menu_start(void)
 {
     if (lcd_encoder > 0x8000) lcd_encoder = 0;
-    if (lcd_encoder < 0) lcd_encoder = 0;
+    if (lcd_encoder < 0)
+    {
+        lcd_encoder = 0;
+		Sound_MakeSound(e_SOUND_TYPE_BlindAlert);
+    }
     if (lcd_encoder < menu_top)
 		menu_top = lcd_encoder;
     menu_line = menu_top;
@@ -75,7 +78,10 @@ void menu_start(void)
 void menu_end(void)
 {
 	if (lcd_encoder >= menu_item)
+	{
 		lcd_encoder = menu_item - 1;
+		Sound_MakeSound(e_SOUND_TYPE_BlindAlert);
+	}
 	if (((uint8_t)lcd_encoder) >= menu_top + LCD_HEIGHT)
 	{
 		menu_top = lcd_encoder - LCD_HEIGHT + 1;
@@ -168,16 +174,61 @@ int menu_draw_item_printf_P(char type_char, const char* format, ...)
 }
 */
 
+static char menu_selection_mark(){
+	return (lcd_encoder == menu_item)?'>':' ';
+}
+
 static void menu_draw_item_puts_P(char type_char, const char* str)
 {
     lcd_set_cursor(0, menu_row);
-    lcd_printf_P(PSTR("%c%-18.18S%c"), (lcd_encoder == menu_item)?'>':' ', str, type_char);
+    lcd_printf_P(PSTR("%c%-18.18S%c"), menu_selection_mark(), str, type_char);
+}
+
+//! @brief Format sheet name
+//!
+//! @param[in] sheet_E Sheet in EEPROM
+//! @param[out] buffer for formatted output
+void menu_format_sheet_E(const Sheet &sheet_E, SheetFormatBuffer &buffer)
+{
+    uint_least8_t index = sprintf_P(buffer.c, PSTR("%.10S "), _T(MSG_SHEET));
+    eeprom_read_block(&(buffer.c[index]), sheet_E.name, 7);
+    //index += 7;
+    buffer.c[index + 7] = '\0';
+}
+
+//! @brief Format sheet name in select menu
+//!
+//! @param[in] sheet_E Sheet in EEPROM
+//! @param[out] buffer for formatted output
+void menu_format_sheet_select_E(const Sheet &sheet_E, SheetFormatBuffer &buffer)
+{
+    uint_least8_t index = sprintf_P(buffer.c,PSTR("%-9.9S["), _T(MSG_SHEET));
+    eeprom_read_block(&(buffer.c[index]), sheet_E.name, 7);
+	buffer.c[index + 7] = ']';
+    buffer.c[index + 8] = '\0';
+}
+
+static void menu_draw_item_select_sheet_E(char type_char, const Sheet &sheet)
+{
+    lcd_set_cursor(0, menu_row);
+    SheetFormatBuffer buffer;
+    menu_format_sheet_select_E(sheet, buffer);
+    lcd_printf_P(PSTR("%c%-18.18s%c"), menu_selection_mark(), buffer.c, type_char);
+}
+
+
+static void menu_draw_item_puts_E(char type_char, const Sheet &sheet)
+{
+    lcd_set_cursor(0, menu_row);
+    SheetFormatBuffer buffer;
+    menu_format_sheet_E(sheet, buffer);
+    lcd_printf_P(PSTR("%c%-18.18s%c"), menu_selection_mark(), buffer.c, type_char);
 }
 
 static void menu_draw_item_puts_P(char type_char, const char* str, char num)
 {
     lcd_set_cursor(0, menu_row);
-    lcd_printf_P(PSTR("%c%-.16S "), (lcd_encoder == menu_item)?'>':' ', str);
+    lcd_printf_P(PSTR("%c%-.16S "), menu_selection_mark(), str);
     lcd_putc(num);
     lcd_set_cursor(19, menu_row);
     lcd_putc(type_char);
@@ -224,6 +275,36 @@ uint8_t menu_item_submenu_P(const char* str, menu_func_t submenu)
 	return 0;
 }
 
+uint8_t menu_item_submenu_E(const Sheet &sheet, menu_func_t submenu)
+{
+    if (menu_item == menu_line)
+    {
+        if (lcd_draw_update) menu_draw_item_puts_E(LCD_STR_ARROW_RIGHT[0], sheet);
+        if (menu_clicked && (lcd_encoder == menu_item))
+        {
+            menu_submenu(submenu);
+            return menu_item_ret();
+        }
+    }
+    menu_item++;
+    return 0;
+}
+
+uint8_t menu_item_submenu_select_sheet_E(const Sheet &sheet, menu_func_t submenu)
+{
+    if (menu_item == menu_line)
+    {
+        if (lcd_draw_update) menu_draw_item_select_sheet_E(LCD_STR_ARROW_RIGHT[0], sheet);
+        if (menu_clicked && (lcd_encoder == menu_item))
+        {
+            menu_submenu(submenu);
+            return menu_item_ret();
+        }
+    }
+    menu_item++;
+    return 0;
+}
+
 uint8_t menu_item_back_P(const char* str)
 {
 	if (menu_item == menu_line)
@@ -399,7 +480,7 @@ uint8_t menu_item_edit_P(const char* str, T pval, int16_t min_val, int16_t max_v
 		if (lcd_draw_update) 
 		{
 			lcd_set_cursor(0, menu_row);
-			menu_draw_P<T>((lcd_encoder == menu_item)?'>':' ', str, *pval);
+			menu_draw_P<T>(menu_selection_mark(), str, *pval);
 		}
 		if (menu_clicked && (lcd_encoder == menu_item))
 		{

Firmware/menu.h

@@ -3,6 +3,7 @@
 #define _MENU_H
 
 #include <inttypes.h>
+#include "eeprom.h"
 
 #define MENU_DATA_SIZE      32
 
@@ -101,6 +102,12 @@ extern uint8_t menu_item_text_P(const char* str);
 #define MENU_ITEM_SUBMENU_P(str, submenu) do { if (menu_item_submenu_P(str, submenu)) return; } while (0)
 extern uint8_t menu_item_submenu_P(const char* str, menu_func_t submenu);
 
+#define MENU_ITEM_SUBMENU_E(sheet, submenu) do { if (menu_item_submenu_E(sheet, submenu)) return; } while (0)
+extern uint8_t menu_item_submenu_E(const Sheet &sheet, menu_func_t submenu);
+
+#define MENU_ITEM_SUBMENU_SELECT_SHEET_E(sheet, submenu) do { if (menu_item_submenu_select_sheet_E(sheet, submenu)) return; } while (0)
+extern uint8_t menu_item_submenu_select_sheet_E(const Sheet &sheet, menu_func_t submenu);
+
 #define MENU_ITEM_BACK_P(str) do { if (menu_item_back_P(str)) return; } while (0)
 extern uint8_t menu_item_back_P(const char* str);
 
@@ -128,6 +135,13 @@ extern void menu_draw_float31(const char* str, float val);
 
 extern void menu_draw_float13(const char* str, float val);
 
+struct SheetFormatBuffer
+{
+    char c[19];
+};
+
+extern void menu_format_sheet_E(const Sheet &sheet_E, SheetFormatBuffer &buffer);
+
 
 #define MENU_ITEM_EDIT_int3_P(str, pval, minval, maxval) do { if (menu_item_edit_P(str, pval, minval, maxval)) return; } while (0)
 //#define MENU_ITEM_EDIT_int3_P(str, pval, minval, maxval) MENU_ITEM_EDIT(int3, str, pval, minval, maxval)

Firmware/mesh_bed_calibration.cpp

@@ -3031,7 +3031,8 @@ void babystep_load()
         check_babystep(); //checking if babystep is in allowed range, otherwise setting babystep to 0
         
         // End of G80: Apply the baby stepping value.
-        EEPROM_read_B(EEPROM_BABYSTEP_Z, &babystepLoadZ);
+        babystepLoadZ = eeprom_read_word(reinterpret_cast<uint16_t *>(&(EEPROM_Sheets_base->
+                    s[(eeprom_read_byte(&(EEPROM_Sheets_base->active_sheet)))].z_offset)));
                             
     #if 0
         SERIAL_ECHO("Z baby step: ");
@@ -3186,4 +3187,4 @@ void mbl_interpolation(uint8_t meas_points) {
 			}
 		}
 	}
-}
+}

Firmware/messages.c

@@ -10,7 +10,7 @@
 //internationalized messages
 const char MSG_AUTO_HOME[] PROGMEM_I1 = ISTR("Auto home"); ////
 const char MSG_AUTO_MODE_ON[] PROGMEM_I1 = ISTR("Mode [auto power]"); ////
-const char MSG_BABYSTEP_Z[] PROGMEM_I1 = ISTR("Live adjust Z"); ////
+const char MSG_BABYSTEP_Z[] PROGMEM_I1 = ISTR("Live adjust Z"); //// c=18
 const char MSG_BABYSTEP_Z_NOT_SET[] PROGMEM_I1 = ISTR("Distance between tip of the nozzle and the bed surface has not been set yet. Please follow the manual, chapter First steps, section First layer calibration."); ////c=20 r=12
 const char MSG_BED[] PROGMEM_I1 = ISTR("Bed"); ////
 const char MSG_BED_DONE[] PROGMEM_I1 = ISTR("Bed done"); ////
@@ -55,6 +55,7 @@ const char MSG_CUT_FILAMENT[] PROGMEM_I1 = ISTR("Cut filament"); //// Number 1 t
 const char MSG_M117_V2_CALIBRATION[] PROGMEM_I1 = ISTR("M117 First layer cal."); ////c=25 r=1
 const char MSG_MAIN[] PROGMEM_I1 = ISTR("Main"); ////
 const char MSG_BACK[] PROGMEM_I1 = ISTR("Back"); ////
+const char MSG_SHEET[] PROGMEM_I1 = ISTR("Sheet"); ////c=10
 const char MSG_MEASURE_BED_REFERENCE_HEIGHT_LINE1[] PROGMEM_I1 = ISTR("Measuring reference height of calibration point"); ////c=60
 const char MSG_MEASURE_BED_REFERENCE_HEIGHT_LINE2[] PROGMEM_I1 = ISTR(" of 9"); ////c=14
 const char MSG_MENU_CALIBRATION[] PROGMEM_I1 = ISTR("Calibration"); ////
@@ -83,6 +84,7 @@ const char MSG_SELFTEST_MOTOR[] PROGMEM_I1 = ISTR("Motor"); ////
 const char MSG_SELFTEST_FILAMENT_SENSOR[] PROGMEM_I1 = ISTR("Filament sensor"); ////c=17
 const char MSG_SELFTEST_WIRINGERROR[] PROGMEM_I1 = ISTR("Wiring error"); ////
 const char MSG_SETTINGS[] PROGMEM_I1 = ISTR("Settings"); ////
+const char MSG_HW_SETUP[] PROGMEM_I1 = ISTR("HW Setup"); ////
 const char MSG_SILENT_MODE_OFF[] PROGMEM_I1 = ISTR("Mode [high power]"); ////
 const char MSG_SILENT_MODE_ON[] PROGMEM_I1 = ISTR("Mode     [silent]"); ////
 const char MSG_STEALTH_MODE_OFF[] PROGMEM_I1 = ISTR("Mode     [Normal]"); ////
@@ -100,6 +102,7 @@ const char MSG_WIZARD_DONE[] PROGMEM_I1 = ISTR("All is done. Happy printing!");
 const char MSG_WIZARD_HEATING[] PROGMEM_I1 = ISTR("Preheating nozzle. Please wait."); ////c=20 r=3
 const char MSG_WIZARD_QUIT[] PROGMEM_I1 = ISTR("You can always resume the Wizard from Calibration -> Wizard."); ////c=20 r=8
 const char MSG_YES[] PROGMEM_I1 = ISTR("Yes"); ////
+const char MSG_V2_CALIBRATION[] PROGMEM_I1 = ISTR("First layer cal."); ////c=17 r=1
 const char WELCOME_MSG[] PROGMEM_I1 = ISTR(CUSTOM_MENDEL_NAME " OK."); ////c=20
 //not internationalized messages
 const char MSG_SD_WORKDIR_FAIL[] PROGMEM_N1 = "workDir open failed"; ////
@@ -126,3 +129,4 @@ const char MSG_ENDSTOP_OPEN[] PROGMEM_N1 = "open"; ////
 const char MSG_POWERUP[] PROGMEM_N1 = "PowerUp"; ////
 const char MSG_ERR_STOPPED[] PROGMEM_N1 = "Printer stopped due to errors. Fix the error and use M999 to restart. (Temperature is reset. Set it after restarting)"; ////
 const char MSG_ENDSTOP_HIT[] PROGMEM_N1 = "TRIGGERED"; ////
+const char MSG_OCTOPRINT_PAUSE[] PROGMEM_N1 = "// action:pause"; ////

Firmware/messages.h

@@ -54,6 +54,7 @@ extern const char MSG_LOADING_FILAMENT[];
 extern const char MSG_M117_V2_CALIBRATION[];
 extern const char MSG_MAIN[];
 extern const char MSG_BACK[];
+extern const char MSG_SHEET[];
 extern const char MSG_MEASURE_BED_REFERENCE_HEIGHT_LINE1[];
 extern const char MSG_MEASURE_BED_REFERENCE_HEIGHT_LINE2[];
 extern const char MSG_MENU_CALIBRATION[];
@@ -83,6 +84,7 @@ extern const char MSG_SELFTEST_MOTOR[];
 extern const char MSG_SELFTEST_FILAMENT_SENSOR[];
 extern const char MSG_SELFTEST_WIRINGERROR[];
 extern const char MSG_SETTINGS[];
+extern const char MSG_HW_SETUP[];
 extern const char MSG_SILENT_MODE_OFF[];
 extern const char MSG_SILENT_MODE_ON[];
 extern const char MSG_STEALTH_MODE_OFF[];
@@ -100,6 +102,7 @@ extern const char MSG_WIZARD_DONE[];
 extern const char MSG_WIZARD_HEATING[];
 extern const char MSG_WIZARD_QUIT[];
 extern const char MSG_YES[];
+extern const char MSG_V2_CALIBRATION[];
 extern const char WELCOME_MSG[];
 //not internationalized messages
 extern const char MSG_BROWNOUT_RESET[];
@@ -127,6 +130,7 @@ extern const char MSG_ERR_STOPPED[];
 extern const char MSG_ENDSTOP_HIT[];
 extern const char MSG_EJECT_FILAMENT[];
 extern const char MSG_CUT_FILAMENT[];
+extern const char MSG_OCTOPRINT_PAUSE[];
 
 #if defined(__cplusplus)
 }

Firmware/mmu.cpp

@@ -15,6 +15,8 @@
 #include <avr/pgmspace.h>
 #include "io_atmega2560.h"
 #include "AutoDeplete.h"
+//-//
+#include "util.h"
 
 #ifdef TMC2130
 #include "tmc2130.h"
@@ -81,9 +83,11 @@ uint16_t mmu_power_failures = 0;
 
 
 #ifdef MMU_DEBUG
+static const auto DEBUG_PUTCHAR = putchar;
 static const auto DEBUG_PUTS_P = puts_P;
 static const auto DEBUG_PRINTF_P = printf_P;
 #else //MMU_DEBUG
+#define DEBUG_PUTCHAR(c)
 #define DEBUG_PUTS_P(str)
 #define DEBUG_PRINTF_P( __fmt, ... )
 #endif //MMU_DEBUG
@@ -263,6 +267,9 @@ void mmu_loop(void)
 			FDEBUG_PRINTF_P(PSTR("MMU => '%dok'\n"), mmu_finda);
 			puts_P(PSTR("MMU - ENABLED"));
 			mmu_enabled = true;
+            //-//
+            // ... PrinterType/Name
+            fSetMmuMode(true);
 			mmu_state = S::Idle;
 		}
 		return;
@@ -416,9 +423,11 @@ void mmu_loop(void)
 		}
 		else if ((mmu_last_request + MMU_CMD_TIMEOUT) < _millis())
 		{ //resend request after timeout (5 min)
-			if (mmu_last_cmd >= MmuCmd::T0 && mmu_last_cmd <= MmuCmd::T4)
+			if (mmu_last_cmd != MmuCmd::None)
 			{
-				if (mmu_attempt_nr++ < MMU_MAX_RESEND_ATTEMPTS) {
+				if (mmu_attempt_nr++ < MMU_MAX_RESEND_ATTEMPTS &&
+				    mmu_last_cmd >= MmuCmd::T0 && mmu_last_cmd <= MmuCmd::T4)
+				{
 				    DEBUG_PRINTF_P(PSTR("MMU retry attempt nr. %d\n"), mmu_attempt_nr - 1);
 					mmu_cmd = mmu_last_cmd;
 				}
@@ -831,7 +840,7 @@ void mmu_M600_wait_and_beep() {
 			}
 			SET_OUTPUT(BEEPER);
 			if (counterBeep == 0) {
-				if((eSoundMode==e_SOUND_MODE_LOUD)||((eSoundMode==e_SOUND_MODE_ONCE)&&bFirst))
+				if((eSoundMode==e_SOUND_MODE_BLIND)|| (eSoundMode==e_SOUND_MODE_LOUD)||((eSoundMode==e_SOUND_MODE_ONCE)&&bFirst))
 				{
 					bFirst=false;
 					WRITE(BEEPER, HIGH);
@@ -969,7 +978,7 @@ void extr_adj(uint8_t extruder) //loading filament for SNMM
 {
 #ifndef SNMM
     MmuCmd cmd = MmuCmd::L0 + extruder;
-    if (cmd > MmuCmd::L4)
+    if (extruder > (MmuCmd::L4 - MmuCmd::L0))
     {
         printf_P(PSTR("Filament out of range %d \n"),extruder);
         return;
@@ -1447,26 +1456,69 @@ bFilamentAction=false;                            // NOT in "mmu_fil_eject_menu(
 	}
 }
 
+//! @brief Fits filament tip into heatbreak?
+//!
+//! If PTFE tube is jammed, this causes filament to be unloaded and no longer
+//! being detected by the pulley IR sensor.
+//! @retval true Fits
+//! @retval false Doesn't fit
+static bool can_load()
+{
+    current_position[E_AXIS] += 60;
+    plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS],
+            current_position[E_AXIS], MMU_LOAD_FEEDRATE, active_extruder);
+    current_position[E_AXIS] -= 52;
+    plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS],
+            current_position[E_AXIS], MMU_LOAD_FEEDRATE, active_extruder);
+    st_synchronize();
+
+    uint_least8_t filament_detected_count = 0;
+    const float e_increment = 0.2;
+    const uint_least8_t steps = 6.0 / e_increment;
+    DEBUG_PUTS_P(PSTR("MMU can_load:"));
+    for(uint_least8_t i = 0; i < steps; ++i)
+    {
+        current_position[E_AXIS] -= e_increment;
+        plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS],
+                current_position[E_AXIS], MMU_LOAD_FEEDRATE, active_extruder);
+        st_synchronize();
+        if(0 == PIN_GET(IR_SENSOR_PIN))
+        {
+            ++filament_detected_count;
+            DEBUG_PUTCHAR('O');
+        }
+        else
+        {
+            DEBUG_PUTCHAR('o');
+        }
+    }
+    if (filament_detected_count > steps - 4)
+    {
+        DEBUG_PUTS_P(PSTR(" succeeded."));
+        return true;
+    }
+    else
+    {
+        DEBUG_PUTS_P(PSTR(" failed."));
+        return false;
+    }
+}
+
 //! @brief load more
 //!
 //! Try to feed more filament from MMU if it is not detected by filament sensor.
-//! Move filament back and forth to nozzle in order to detect jam.
-//! If PTFE tube is jammed, this cause filament to be unloaded and no longer
-//! detected by pulley IR sensor in next step.
-static void load_more()
+//! @retval true Success, filament detected by IR sensor
+//! @retval false Failed, filament not detected by IR sensor after maximum number of attempts
+static bool load_more()
 {
     for (uint8_t i = 0; i < MMU_IDLER_SENSOR_ATTEMPTS_NR; i++)
     {
-        if (PIN_GET(IR_SENSOR_PIN) == 0) break;
+        if (PIN_GET(IR_SENSOR_PIN) == 0) return true;
         DEBUG_PRINTF_P(PSTR("Additional load attempt nr. %d\n"), i);
         mmu_command(MmuCmd::C0);
         manage_response(true, true, MMU_LOAD_MOVE);
     }
-    current_position[E_AXIS] += 60;
-    plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], MMU_LOAD_FEEDRATE, active_extruder);
-    current_position[E_AXIS] -= 58;
-    plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], MMU_LOAD_FEEDRATE, active_extruder);
-    st_synchronize();
+    return false;
 }
 
 static void increment_load_fail()
@@ -1507,7 +1559,8 @@ void mmu_continue_loading(bool blocking)
 	    return;
 	}
 
-    load_more();
+    bool success = load_more();
+    if (success) success = can_load();
 
     enum class Ls : uint_least8_t
     {
@@ -1517,7 +1570,10 @@ void mmu_continue_loading(bool blocking)
     };
     Ls state = Ls::Enter;
 
-    while (PIN_GET(IR_SENSOR_PIN) != 0)
+    const uint_least8_t max_retry = 2;
+    uint_least8_t retry = 0;
+
+    while (!success)
     {
         switch (state)
         {
@@ -1534,8 +1590,10 @@ void mmu_continue_loading(bool blocking)
 #endif //MMU_HAS_CUTTER
             mmu_command(MmuCmd::T0 + tmp_extruder);
             manage_response(true, true, MMU_TCODE_MOVE);
-            load_more();
-            state = Ls::Unload;
+            success = load_more();
+            if (success) success = can_load();
+            ++retry; // overflow not handled, as it is not dangerous.
+            if (retry >= max_retry) state = Ls::Unload;
             break;
         case Ls::Unload:
             stop_and_save_print_to_ram(0, 0);

Firmware/printers.h

@@ -3,14 +3,38 @@
 
 #define PRINTER_UNKNOWN 0
 
-#define PRINTER_MK1         100
-#define PRINTER_MK2         200
-#define PRINTER_MK2_SNMM    201
-#define PRINTER_MK25        250
-#define PRINTER_MK25_SNMM   251
-#define PRINTER_MK25S		252
-#define PRINTER_MK3         300
-#define PRINTER_MK3_SNMM    301
-#define PRINTER_MK3S		302
+// *** MK1
+#define PRINTER_MK1	               100
+#define PRINTER_MK1_NAME           "MK1"
+// *** MK2
+#define PRINTER_MK2	               200
+#define PRINTER_MK2_NAME           "MK2"
+#define PRINTER_MK2_SNMM           201            // better is "10200"
+#define PRINTER_MK2_SNMM_NAME      "MK2MM"        // better is "MK2MMU1"
+// *** MK2S ??? is same as "MK2" ???
+#define PRINTER_MK2S	          202
+#define PRINTER_MK2S_NAME          "MK2S"
+#define PRINTER_MK2S_SNMM          203            // better is "10202"
+#define PRINTER_MK2S_SNMM_NAME     "MK2SMM"       // better is "MK2SMMU1"
+// *** MK2.5
+#define PRINTER_MK25	          250
+#define PRINTER_MK25_NAME          "MK2.5"
+#define PRINTER_MK25_MMU2          20250
+#define PRINTER_MK25_MMU2_NAME     "MK2.5MMU2"
+// *** MK2.5S
+#define PRINTER_MK25S	     	252
+#define PRINTER_MK25S_NAME         "MK2.5S"
+#define PRINTER_MK25S_MMU2         20252
+#define PRINTER_MK25S_MMU2_NAME    "MK2.5SMMU2S"
+// *** MK3
+#define PRINTER_MK3                300
+#define PRINTER_MK3_NAME           "MK3"
+#define PRINTER_MK3_MMU2           20300
+#define PRINTER_MK3_MMU2_NAME      "MK3MMU2"
+// *** MK3S
+#define PRINTER_MK3S     		302
+#define PRINTER_MK3S_NAME          "MK3S"
+#define PRINTER_MK3S_MMU2          20302
+#define PRINTER_MK3S_MMU2_NAME     "MK3SMMU2S"
 
 #endif //PRINTERS_H

Firmware/sound.cpp

@@ -17,7 +17,8 @@ static void Sound_SaveMode(void);
 static void Sound_DoSound_Echo(void);
 static void Sound_DoSound_Prompt(void);
 static void Sound_DoSound_Alert(bool bOnce);
-
+static void Sound_DoSound_Encoder_Move(void);
+static void Sound_DoSound_Blind_Alert(void);
 
 void Sound_Init(void)
 {
@@ -49,9 +50,9 @@ switch(eSoundMode)
           eSoundMode=e_SOUND_MODE_SILENT;
           break;
      case e_SOUND_MODE_SILENT:
-          eSoundMode=e_SOUND_MODE_MUTE;
+          eSoundMode=e_SOUND_MODE_BLIND;
           break;
-     case e_SOUND_MODE_MUTE:
+     case e_SOUND_MODE_BLIND:
           eSoundMode=e_SOUND_MODE_LOUD;
           break;
      default:
@@ -60,6 +61,37 @@ switch(eSoundMode)
 Sound_SaveMode();
 }
 
+//if critical is true then silend and once mode is ignored
+void Sound_MakeCustom(uint16_t ms,uint16_t tone_,bool critical){
+     if (!critical){
+          if (eSoundMode != e_SOUND_MODE_SILENT){
+               if(!tone_){
+                    WRITE(BEEPER, HIGH);
+                    _delay(ms);
+                    WRITE(BEEPER, LOW);
+               }
+               else{
+                    _tone(BEEPER, tone_);
+                    _delay(ms);
+                    _noTone(BEEPER);
+               }
+          }
+     }
+     else{
+          if(!tone_){
+               WRITE(BEEPER, HIGH);
+               _delay(ms);
+               WRITE(BEEPER, LOW);
+               _delay(ms);
+          }
+          else{
+               _tone(BEEPER, tone_);
+               _delay(ms);
+               _noTone(BEEPER);
+          }
+     }
+}
+
 void Sound_MakeSound(eSOUND_TYPE eSoundType)
 {
 switch(eSoundMode)
@@ -84,13 +116,43 @@ switch(eSoundMode)
           if(eSoundType==e_SOUND_TYPE_StandardAlert)
                Sound_DoSound_Alert(true);
           break;
-     case e_SOUND_MODE_MUTE:
-          break;
+     case e_SOUND_MODE_BLIND:
+          if(eSoundType==e_SOUND_TYPE_ButtonEcho)
+               Sound_DoSound_Echo();
+          if(eSoundType==e_SOUND_TYPE_StandardPrompt)
+               Sound_DoSound_Prompt();
+          if(eSoundType==e_SOUND_TYPE_StandardAlert)
+               Sound_DoSound_Alert(false);
+          if(eSoundType==e_SOUND_TYPE_EncoderMove)
+               Sound_DoSound_Encoder_Move();
+          if(eSoundType==e_SOUND_TYPE_BlindAlert)
+               Sound_DoSound_Blind_Alert();
+               break;
      default:
-          ;
+          break;
      }
 }
 
+static void Sound_DoSound_Blind_Alert(void)
+{
+     _tone(BEEPER,300);
+     _delay_ms(75);
+     _noTone(BEEPER);
+     _delay_ms(75);
+}
+
+ static void Sound_DoSound_Encoder_Move(void)
+{
+uint8_t nI;
+
+ for(nI=0;nI<5;nI++)
+     {
+     WRITE(BEEPER,HIGH);
+     delayMicroseconds(75);
+     WRITE(BEEPER,LOW);
+     delayMicroseconds(75);
+     }
+}
 
 static void Sound_DoSound_Echo(void)
 {
@@ -108,7 +170,7 @@ for(nI=0;nI<10;nI++)
 static void Sound_DoSound_Prompt(void)
 {
 WRITE(BEEPER,HIGH);
-delay_keep_alive(500);
+_delay_ms(500);
 WRITE(BEEPER,LOW);
 }
 
@@ -120,8 +182,8 @@ nMax=bOnce?1:3;
 for(nI=0;nI<nMax;nI++)
      {
      WRITE(BEEPER,HIGH);
-     delay_keep_alive(200);
+     delayMicroseconds(200);
      WRITE(BEEPER,LOW);
-     delay_keep_alive(500);
+     delayMicroseconds(500);
      }
 }

Firmware/sound.h

@@ -1,3 +1,4 @@
+#include <stdint.h>
 #ifndef SOUND_H
 #define SOUND_H
 
@@ -5,16 +6,16 @@
 #define MSG_SOUND_MODE_LOUD "Sound      [loud]"
 #define MSG_SOUND_MODE_ONCE "Sound      [once]"
 #define MSG_SOUND_MODE_SILENT "Sound    [silent]"
-#define MSG_SOUND_MODE_MUTE "Sound      [mute]"
+#define MSG_SOUND_MODE_BLIND "Sound     [blind]" 
 
 
 #define e_SOUND_MODE_NULL 0xFF
 typedef enum
-     {e_SOUND_MODE_LOUD,e_SOUND_MODE_ONCE,e_SOUND_MODE_SILENT,e_SOUND_MODE_MUTE} eSOUND_MODE;
+     {e_SOUND_MODE_LOUD,e_SOUND_MODE_ONCE,e_SOUND_MODE_SILENT,e_SOUND_MODE_BLIND} eSOUND_MODE;
 #define e_SOUND_MODE_DEFAULT e_SOUND_MODE_LOUD
 
 typedef enum
-     {e_SOUND_TYPE_ButtonEcho,e_SOUND_TYPE_EncoderEcho,e_SOUND_TYPE_StandardPrompt,e_SOUND_TYPE_StandardConfirm,e_SOUND_TYPE_StandardWarning,e_SOUND_TYPE_StandardAlert} eSOUND_TYPE;
+     {e_SOUND_TYPE_ButtonEcho,e_SOUND_TYPE_EncoderEcho,e_SOUND_TYPE_StandardPrompt,e_SOUND_TYPE_StandardConfirm,e_SOUND_TYPE_StandardWarning,e_SOUND_TYPE_StandardAlert,e_SOUND_TYPE_EncoderMove,e_SOUND_TYPE_BlindAlert} eSOUND_TYPE;
 typedef enum
      {e_SOUND_CLASS_Echo,e_SOUND_CLASS_Prompt,e_SOUND_CLASS_Confirm,e_SOUND_CLASS_Warning,e_SOUND_CLASS_Alert} eSOUND_CLASS;
 
@@ -27,6 +28,7 @@ extern void Sound_Default(void);
 extern void Sound_Save(void);
 extern void Sound_CycleState(void);
 extern void Sound_MakeSound(eSOUND_TYPE eSoundType);
+extern void Sound_MakeCustom(uint16_t ms,uint16_t tone_ ,bool critical);
 
 //static void Sound_DoSound_Echo(void);
 //static void Sound_DoSound_Prompt(void);

Firmware/stepper.cpp

@@ -1176,6 +1176,9 @@ void st_init()
       SET_OUTPUT(Z2_STEP_PIN);
       WRITE(Z2_STEP_PIN,INVERT_Z_STEP_PIN);
     #endif
+    #ifdef PSU_Delta
+      init_force_z();
+    #endif // PSU_Delta
     disable_z();
   #endif
   #if defined(E0_STEP_PIN) && (E0_STEP_PIN > -1)

Firmware/system_timer.h

@@ -4,7 +4,7 @@
 #define FIRMWARE_SYSTEM_TIMER_H_
 
 #include "Arduino.h"
-//#define SYSTEM_TIMER_2
+#define SYSTEM_TIMER_2
 
 #ifdef SYSTEM_TIMER_2
 #include "timer02.h"
@@ -13,12 +13,15 @@
 #define _delay delay2
 #define _tone tone2
 #define _noTone noTone2
+
+#define timer02_set_pwm0(pwm0)
+
 #else //SYSTEM_TIMER_2
 #define _millis millis
 #define _micros micros
 #define _delay delay
-#define _tone tone
-#define _noTone noTone
+#define _tone(x, y) /*tone*/
+#define _noTone(x) /*noTone*/
 #define timer02_set_pwm0(pwm0)
 #endif //SYSTEM_TIMER_2
 

Firmware/temperature.cpp

@@ -40,12 +40,10 @@
 #include <avr/wdt.h>
 #include "adc.h"
 #include "ConfigurationStore.h"
-
+#include "messages.h"
 #include "Timer.h"
 #include "Configuration_prusa.h"
 
-
-
 //===========================================================================
 //=============================public variables============================
 //===========================================================================
@@ -500,12 +498,16 @@ void checkFanSpeed()
 	max_print_fan_errors = 15; //15 seconds
 	max_extruder_fan_errors = 5; //5 seconds
 #endif //FAN_SOFT_PWM
-
-	fans_check_enabled = (eeprom_read_byte((uint8_t*)EEPROM_FAN_CHECK_ENABLED) > 0);
+  
+  if(fans_check_enabled != false)
+	  fans_check_enabled = (eeprom_read_byte((uint8_t*)EEPROM_FAN_CHECK_ENABLED) > 0);
 	static unsigned char fan_speed_errors[2] = { 0,0 };
 #if (defined(FANCHECK) && defined(TACH_0) && (TACH_0 >-1))
-	if ((fan_speed[0] == 0) && (current_temperature[0] > EXTRUDER_AUTO_FAN_TEMPERATURE)) fan_speed_errors[0]++;
-	else fan_speed_errors[0] = 0;
+	if ((fan_speed[0] == 0) && (current_temperature[0] > EXTRUDER_AUTO_FAN_TEMPERATURE)){ fan_speed_errors[0]++;}
+	else{
+    fan_speed_errors[0] = 0;
+    host_keepalive();
+  }
 #endif
 #if (defined(FANCHECK) && defined(TACH_1) && (TACH_1 >-1))
 	if ((fan_speed[1] < 5) && ((blocks_queued() ? block_buffer[block_buffer_tail].fan_speed : fanSpeed) > MIN_PRINT_FAN_SPEED)) fan_speed_errors[1]++;
@@ -535,12 +537,7 @@ void checkFanSpeed()
 static void fanSpeedErrorBeep(const char *serialMsg, const char *lcdMsg){
 	SERIAL_ECHOLNRPGM(serialMsg);
 	if (get_message_level() == 0) {
-		if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE)||(eSoundMode==e_SOUND_MODE_SILENT)){
-			WRITE(BEEPER, HIGH);
-			delayMicroseconds(200);
-			WRITE(BEEPER, LOW);
-			delayMicroseconds(100); // what is this wait for?
-		}
+		Sound_MakeCustom(200,0,true);
 		LCD_ALERTMESSAGERPGM(lcdMsg);
 	}
 }
@@ -548,18 +545,19 @@ static void fanSpeedErrorBeep(const char *serialMsg, const char *lcdMsg){
 void fanSpeedError(unsigned char _fan) {
 	if (get_message_level() != 0 && isPrintPaused) return; 
 	//to ensure that target temp. is not set to zero in case taht we are resuming print 
-	if (card.sdprinting) {
+	if (card.sdprinting || is_usb_printing) {
 		if (heating_status != 0) {
 			lcd_print_stop();
 		}
 		else {
 			fan_check_error = EFCE_DETECTED;
-
 		}
 	}
 	else {
+			SERIAL_PROTOCOLLNRPGM(MSG_OCTOPRINT_PAUSE); //for octoprint
 			setTargetHotend0(0);
-			SERIAL_ECHOLNPGM("// action:pause"); //for octoprint
+      heating_status = 0;
+      fan_check_error = EFCE_REPORTED;
 	}
 	switch (_fan) {
 	case 0:	// extracting the same code from case 0 and case 1 into a function saves 72B
@@ -569,6 +567,7 @@ void fanSpeedError(unsigned char _fan) {
 		fanSpeedErrorBeep(PSTR("Print fan speed is lower than expected"), PSTR("Err: PRINT FAN ERROR") );
 		break;
 	}
+  SERIAL_PROTOCOLLNRPGM(MSG_OK);
 }
 #endif //(defined(TACH_0) && TACH_0 >-1) || (defined(TACH_1) && TACH_1 > -1)
 
@@ -1130,18 +1129,9 @@ void tp_init()
 
   adc_init();
 
-#ifdef SYSTEM_TIMER_2
-  timer02_init();
+  timer0_init();
   OCR2B = 128;
   TIMSK2 |= (1<<OCIE2B);  
-#else //SYSTEM_TIMER_2
-  // Use timer0 for temperature measurement
-  // Interleave temperature interrupt with millies interrupt
-  OCR0B = 128;
-  TIMSK0 |= (1<<OCIE0B);  
-#endif //SYSTEM_TIMER_2
-
-
   
   // Wait for temperature measurement to settle
   _delay(250);
@@ -1406,13 +1396,9 @@ void temp_runaway_stop(bool isPreheat, bool isBed)
 	disable_e2();
 	manage_heater();
 	lcd_update(0);
-if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE)||(eSoundMode==e_SOUND_MODE_SILENT))
-	WRITE(BEEPER, HIGH);
-	delayMicroseconds(500);
-	WRITE(BEEPER, LOW);
-	delayMicroseconds(100);
-
-	if (isPreheat)
+  Sound_MakeCustom(200,0,true);
+	
+  if (isPreheat)
 	{
 		Stop();
 		isBed ? LCD_ALERTMESSAGEPGM("BED PREHEAT ERROR") : LCD_ALERTMESSAGEPGM("PREHEAT ERROR");
@@ -1472,8 +1458,8 @@ void disable_heater()
     target_temperature_bed=0;
     soft_pwm_bed=0;
 	timer02_set_pwm0(soft_pwm_bed << 1);
-    #if defined(HEATER_BED_PIN) && HEATER_BED_PIN > -1  
-      WRITE(HEATER_BED_PIN,LOW);
+    #if defined(HEATER_BED_PIN) && HEATER_BED_PIN > -1
+      //WRITE(HEATER_BED_PIN,LOW);
     #endif
   #endif 
 }
@@ -1506,7 +1492,6 @@ void max_temp_error(uint8_t e) {
     SET_OUTPUT(BEEPER);
     WRITE(FAN_PIN, 1);
     WRITE(EXTRUDER_0_AUTO_FAN_PIN, 1);
-if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE)||(eSoundMode==e_SOUND_MODE_SILENT))
     WRITE(BEEPER, 1);
     // fanSpeed will consumed by the check_axes_activity() routine.
     fanSpeed=255;
@@ -1544,7 +1529,7 @@ void min_temp_error(uint8_t e) {
 
 void bed_max_temp_error(void) {
 #if HEATER_BED_PIN > -1
-  WRITE(HEATER_BED_PIN, 0);
+  //WRITE(HEATER_BED_PIN, 0);
 #endif
   if(IsStopped() == false) {
     SERIAL_ERROR_START;
@@ -1563,7 +1548,7 @@ void bed_min_temp_error(void) {
 #endif
 //if (current_temperature_ambient < MINTEMP_MINAMBIENT) return;
 #if HEATER_BED_PIN > -1
-    WRITE(HEATER_BED_PIN, 0);
+    //WRITE(HEATER_BED_PIN, 0);
 #endif
 	static const char err[] PROGMEM = "Err: MINTEMP BED";
     if(IsStopped() == false) {
@@ -1660,7 +1645,6 @@ void adc_ready(void) //callback from adc when sampling finished
 
 } // extern "C"
 
-
 // Timer2 (originaly timer0) is shared with millies
 #ifdef SYSTEM_TIMER_2
 ISR(TIMER2_COMPB_vect)
@@ -1676,8 +1660,8 @@ ISR(TIMER0_COMPB_vect)
 	if (!temp_meas_ready) adc_cycle();
 	lcd_buttons_update();
 
-  static unsigned char pwm_count = (1 << SOFT_PWM_SCALE);
-  static unsigned char soft_pwm_0;
+  static uint8_t pwm_count = (1 << SOFT_PWM_SCALE);
+  static uint8_t soft_pwm_0;
 #ifdef SLOW_PWM_HEATERS
   static unsigned char slow_pwm_count = 0;
   static unsigned char state_heater_0 = 0;
@@ -1698,7 +1682,7 @@ ISR(TIMER0_COMPB_vect)
 #endif 
 #endif
 #if HEATER_BED_PIN > -1
-  static unsigned char soft_pwm_b;
+  // @@DR static unsigned char soft_pwm_b;
 #ifdef SLOW_PWM_HEATERS
   static unsigned char state_heater_b = 0;
   static unsigned char state_timer_heater_b = 0;
@@ -1733,14 +1717,25 @@ ISR(TIMER0_COMPB_vect)
 #endif
   }
 #if defined(HEATER_BED_PIN) && HEATER_BED_PIN > -1
+  
+#if 0  // @@DR vypnuto pro hw pwm bedu
+  // tuhle prasarnu bude potreba poustet ve stanovenych intervalech, jinak nemam moc sanci zareagovat
+  // teoreticky by se tato cast uz vubec nemusela poustet
   if ((pwm_count & ((1 << HEATER_BED_SOFT_PWM_BITS) - 1)) == 0)
   {
     soft_pwm_b = soft_pwm_bed >> (7 - HEATER_BED_SOFT_PWM_BITS);
-#ifndef SYSTEM_TIMER_2
-	if(soft_pwm_b > 0) WRITE(HEATER_BED_PIN,1); else WRITE(HEATER_BED_PIN,0);
-#endif //SYSTEM_TIMER_2
+#  ifndef SYSTEM_TIMER_2
+	// tady budu krokovat pomalou frekvenci na automatu - tohle je rizeni spinani a rozepinani
+	// jako ridici frekvenci mam 2khz, jako vystupni frekvenci mam 30hz
+	// 2kHz jsou ovsem ve slysitelnem pasmu, mozna bude potreba jit s frekvenci nahoru (a tomu taky prizpusobit ostatni veci)
+	// Teoreticky bych mohl stahnout OCR0B citac na 6, cimz bych se dostal nekam ke 40khz a tady potom honit PWM rychleji nebo i pomaleji
+	// to nicemu nevadi. Soft PWM scale by se 20x zvetsilo (no dobre, 16x), cimz by se to posunulo k puvodnimu 30Hz PWM
+	//if(soft_pwm_b > 0) WRITE(HEATER_BED_PIN,1); else WRITE(HEATER_BED_PIN,0);
+#  endif //SYSTEM_TIMER_2
   }
 #endif
+#endif
+  
 #ifdef FAN_SOFT_PWM
   if ((pwm_count & ((1 << FAN_SOFT_PWM_BITS) - 1)) == 0)
   {
@@ -1762,8 +1757,14 @@ ISR(TIMER0_COMPB_vect)
 #if EXTRUDERS > 2
   if(soft_pwm_2 < pwm_count) WRITE(HEATER_2_PIN,0);
 #endif
+
+#if 0 // @@DR  
 #if defined(HEATER_BED_PIN) && HEATER_BED_PIN > -1
-  if (soft_pwm_b < (pwm_count & ((1 << HEATER_BED_SOFT_PWM_BITS) - 1))) WRITE(HEATER_BED_PIN,0);
+  if (soft_pwm_b < (pwm_count & ((1 << HEATER_BED_SOFT_PWM_BITS) - 1))){
+	  //WRITE(HEATER_BED_PIN,0);
+  }
+  //WRITE(HEATER_BED_PIN, pwm_count & 1 );
+#endif
 #endif
 #ifdef FAN_SOFT_PWM
   if (soft_pwm_fan < (pwm_count & ((1 << FAN_SOFT_PWM_BITS) - 1))) WRITE(FAN_PIN,0);

Firmware/temperature.h

@@ -122,6 +122,7 @@ inline void babystepsTodoZsubtract(int n)
 //inline so that there is no performance decrease.
 //deg=degreeCelsius
 
+// Doesn't save FLASH when FORCE_INLINE removed.
 FORCE_INLINE float degHotend(uint8_t extruder) {  
   return current_temperature[extruder];
 };
@@ -140,6 +141,7 @@ FORCE_INLINE float degBed() {
   return current_temperature_bed;
 };
 
+// Doesn't save FLASH when FORCE_INLINE removed.
 FORCE_INLINE float degTargetHotend(uint8_t extruder) {  
   return target_temperature[extruder];
 };
@@ -148,11 +150,13 @@ FORCE_INLINE float degTargetBed() {
   return target_temperature_bed;
 };
 
+// Doesn't save FLASH when FORCE_INLINE removed.
 FORCE_INLINE void setTargetHotend(const float &celsius, uint8_t extruder) {  
   target_temperature[extruder] = celsius;
   resetPID(extruder);
 };
 
+// Doesn't save FLASH when not inlined.
 static inline void setTargetHotendSafe(const float &celsius, uint8_t extruder)
 {
     if (extruder<EXTRUDERS) {
@@ -161,6 +165,7 @@ static inline void setTargetHotendSafe(const float &celsius, uint8_t extruder)
     }
 }
 
+// Doesn't save FLASH when not inlined.
 static inline void setAllTargetHotends(const float &celsius)
 {
     for(int i=0;i<EXTRUDERS;i++) setTargetHotend(celsius,i);

Firmware/timer02.c

@@ -9,48 +9,27 @@
 
 #include <avr/io.h>
 #include <avr/interrupt.h>
-#include "Arduino.h"
 #include "io_atmega2560.h"
 
 #define BEEPER              84
 
-uint8_t timer02_pwm0 = 0;
-
-void timer02_set_pwm0(uint8_t pwm0)
-{
-	if (timer02_pwm0 == pwm0) return;
-	if (pwm0)
-	{
-		TCCR0A |= (2 << COM0B0);
-		OCR0B = pwm0 - 1;
-	}
-	else
-	{
-		TCCR0A &= ~(2 << COM0B0);
-		OCR0B = 0;
-	}
-	timer02_pwm0 = pwm0;
-}
-
-void timer02_init(void)
+void timer0_init(void)
 {
 	//save sreg
 	uint8_t _sreg = SREG;
 	//disable interrupts for sure
 	cli();
-	//mask timer0 interrupts - disable all
-	TIMSK0 &= ~(1<<TOIE0);
-	TIMSK0 &= ~(1<<OCIE0A);
-	TIMSK0 &= ~(1<<OCIE0B);
-	//setup timer0
-	TCCR0A = 0x00; //COM_A-B=00, WGM_0-1=00
-	TCCR0B = (1 << CS00); //WGM_2=0, CS_0-2=011
-	//switch timer0 to fast pwm mode
-	TCCR0A |= (3 << WGM00); //WGM_0-1=11
-	//set OCR0B register to zero
-	OCR0B = 0;
-	//disable OCR0B output (will be enabled in timer02_set_pwm0)
-	TCCR0A &= ~(2 << COM0B0);
+
+	TCNT0  = 0;
+	// Fast PWM duty (0-255). 
+	// Due to invert mode (following rows) the duty is set to 255, which means zero all the time (bed not heating)
+	OCR0B = 255;
+	// Set fast PWM mode and inverting mode.
+	TCCR0A = (1 << WGM01) | (1 << WGM00) | (1 << COM0B1) | (1 << COM0B0);  
+	TCCR0B = (1 << CS00);    // no clock prescaling
+	TIMSK0 |= (1 << TOIE0);  // enable timer overflow interrupt
+	
+	// Everything, that used to be on timer0 was moved to timer2 (delay, beeping, millis etc.)
 	//setup timer2
 	TCCR2A = 0x00; //COM_A-B=00, WGM_0-1=00
 	TCCR2B = (4 << CS20); //WGM_2=0, CS_0-2=011
@@ -66,11 +45,9 @@ void timer02_init(void)
 }
 
 
-//following code is OVF handler for timer 2
-//it is copy-paste from wiring.c and modified for timer2
-//variables timer0_overflow_count and timer0_millis are declared in wiring.c
-
-
+// The following code is OVF handler for timer 2
+// it was copy-pasted from wiring.c and modified for timer2
+// variables timer0_overflow_count and timer0_millis are declared in wiring.c
 
 // the prescaler is set so that timer0 ticks every 64 clock cycles, and the
 // the overflow handler is called every 256 ticks.
@@ -85,9 +62,6 @@ void timer02_init(void)
 #define FRACT_INC ((MICROSECONDS_PER_TIMER0_OVERFLOW % 1000) >> 3)
 #define FRACT_MAX (1000 >> 3)
 
-//extern volatile unsigned long timer0_overflow_count;
-//extern volatile unsigned long timer0_millis;
-//unsigned char timer0_fract = 0;
 volatile unsigned long timer2_overflow_count;
 volatile unsigned long timer2_millis;
 unsigned char timer2_fract = 0;

Firmware/timer02.h

@@ -11,24 +11,25 @@
 extern "C" {
 #endif //defined(__cplusplus)
 
+///! Initializes TIMER0 for fast PWM mode-driven bed heating
+extern void timer0_init(void);
 
-extern uint8_t timer02_pwm0;
-
-extern void timer02_set_pwm0(uint8_t pwm0);
-
-extern void timer02_init(void);
-
+///! Reimplemented original millis() using timer2
 extern unsigned long millis2(void);
 
+///! Reimplemented original micros() using timer2
 extern unsigned long micros2(void);
 
+///! Reimplemented original delay() using timer2
 extern void delay2(unsigned long ms);
 
+///! Reimplemented original tone() using timer2
+///! Does not perform any PWM tone generation, it just sets the beeper pin to 1
 extern void tone2(uint8_t _pin, unsigned int frequency/*, unsigned long duration*/);
 
+///! Turn off beeping - set beeper pin to 0
 extern void noTone2(uint8_t _pin);
 
-
 #if defined(__cplusplus)
 }
 #endif //defined(__cplusplus)

Firmware/tmc2130.cpp

@@ -142,8 +142,11 @@ uint16_t __tcoolthrs(uint8_t axis)
 	}
 	return 0;
 }
-
+#ifdef PSU_Delta
+void tmc2130_init(bool bSupressFlag)
+#else
 void tmc2130_init()
+#endif
 {
 //	DBG(_n("tmc2130_init(), mode=%S\n"), tmc2130_mode?_n("STEALTH"):_n("NORMAL"));
 	WRITE(X_TMC2130_CS, HIGH);
@@ -216,6 +219,11 @@ void tmc2130_init()
 	tmc2130_set_wave(E_AXIS, 247, tmc2130_wave_fac[E_AXIS]);
 #endif //TMC2130_LINEARITY_CORRECTION
 
+#ifdef PSU_Delta
+     if(!bSupressFlag)
+          check_force_z();
+#endif // PSU_Delta
+
 }
 
 uint8_t tmc2130_sample_diag()

Firmware/tmc2130.h

@@ -51,7 +51,11 @@ typedef struct
 extern tmc2130_chopper_config_t tmc2130_chopper_config[4];
 
 //initialize tmc2130
+#ifdef PSU_Delta
+extern void tmc2130_init(bool bSupressFlag=false);
+#else
 extern void tmc2130_init();
+#endif
 //check diag pins (called from stepper isr)
 extern void tmc2130_st_isr();
 //update stall guard (called from st_synchronize inside the loop)

Firmware/ultralcd.cpp

@@ -257,6 +257,11 @@ static void lcd_connect_printer();
 void lcd_finishstatus();
 
 static void lcd_sdcard_menu();
+static void lcd_sheet_menu();
+
+static void lcd_select_sheet_0_menu();
+static void lcd_select_sheet_1_menu();
+static void lcd_select_sheet_2_menu();
 
 #ifdef DELTA_CALIBRATION_MENU
 static void lcd_delta_calibrate_menu();
@@ -298,6 +303,8 @@ static void menu_action_sddirectory(const char* filename);
 bool lcd_oldcardstatus;
 #endif
 
+uint8_t selected_sheet = 0;
+
 bool ignore_click = false;
 bool wait_for_unclick;
 
@@ -307,6 +314,7 @@ bool wait_for_unclick;
 #endif
 
 bool bMain;                                       // flag (i.e. 'fake parameter') for 'lcd_sdcard_menu()' function
+bool bSettings;                                   // flag (i.e. 'fake parameter') for 'lcd_hw_setup_menu()' function
 
 
 
@@ -988,6 +996,8 @@ static void lcd_status_screen()
 			{
 			case 8:
 				prusa_statistics(21);
+				if(loading_flag)
+					prusa_statistics(22);
 				break;
 			case 5:
 				if (IS_SD_PRINTING)
@@ -1062,7 +1072,7 @@ static void lcd_status_screen()
 }
 
 void lcd_commands()
-{	
+{
 	if (lcd_commands_type == LcdCommands::LongPause)
 	{
 		if (!blocks_queued() && !homing_flag)
@@ -1446,9 +1456,9 @@ void lcd_commands()
                     lcd_wizard(WizState::RepeatLay1Cal);
                 }
                 break;
-            }
-        }
-	}
+		}
+			}
+		}
 
 #endif // not SNMM
 
@@ -1655,6 +1665,7 @@ void lcd_pause_print()
     {
         lcd_commands_type = LcdCommands::LongPause;
     }
+	SERIAL_PROTOCOLLNRPGM(MSG_OCTOPRINT_PAUSE); //pause for octoprint
 }
 
 
@@ -1768,8 +1779,8 @@ void lcd_menu_extruder_info()                     // NOT static due to using ins
 
 	lcd_timeoutToStatus.stop(); //infinite timeout
 
+	lcd_home();
 	lcd_printf_P(_N(
-	  ESC_H(0,0)
 	  "%S: %4d RPM\n"
 	  "%S:  %4d RPM\n"
 	 ),
@@ -1830,8 +1841,8 @@ static void lcd_menu_fails_stats_mmu_print()
 	lcd_timeoutToStatus.stop(); //infinite timeout
     uint8_t fails = eeprom_read_byte((uint8_t*)EEPROM_MMU_FAIL);
     uint16_t load_fails = eeprom_read_byte((uint8_t*)EEPROM_MMU_LOAD_FAIL);
-//	lcd_printf_P(PSTR(ESC_H(0,0) "Last print failures" ESC_H(1,1) "Power failures  %-3d" ESC_H(1,2) "Filam. runouts  %-3d" ESC_H(1,3) "Crash  X %-3d  Y %-3d"), power, filam, crashX, crashY);
-	lcd_printf_P(PSTR(ESC_H(0,0) "%S" ESC_H(1,1) "%S  %-3d" ESC_H(1,2) "%S  %-3d" ESC_H(1,3)), _i("Last print failures"), _i("MMU fails"), fails, _i("MMU load fails"), load_fails);
+	lcd_home();
+	lcd_printf_P(PSTR("%S\n" " %S  %-3d\n" " %S  %-3d"), _i("Last print failures"), _i("MMU fails"), fails, _i("MMU load fails"), load_fails);
 	menu_back_if_clicked_fb();
 }
 
@@ -1847,8 +1858,8 @@ static void lcd_menu_fails_stats_mmu_total()
 	lcd_timeoutToStatus.stop(); //infinite timeout
     uint8_t fails = eeprom_read_byte((uint8_t*)EEPROM_MMU_FAIL_TOT);
     uint16_t load_fails = eeprom_read_byte((uint8_t*)EEPROM_MMU_LOAD_FAIL_TOT);
-//	lcd_printf_P(PSTR(ESC_H(0,0) "Last print failures" ESC_H(1,1) "Power failures  %-3d" ESC_H(1,2) "Filam. runouts  %-3d" ESC_H(1,3) "Crash  X %-3d  Y %-3d"), power, filam, crashX, crashY);
-	lcd_printf_P(PSTR(ESC_H(0,0) "%S" ESC_H(1,1) "%S  %-3d" ESC_H(1,2) "%S  %-3d" ESC_H(1,3) "%S %-3d"), _i("Total failures"), _i("MMU fails"), fails, _i("MMU load fails"), load_fails, _i("MMU power fails"), mmu_power_failures);
+	lcd_home();
+	lcd_printf_P(PSTR("%S\n" " %S  %-3d\n" " %S  %-3d\n" " %S %-3d"), _i("Total failures"), _i("MMU fails"), fails, _i("MMU load fails"), load_fails, _i("MMU power fails"), mmu_power_failures);
 	menu_back_if_clicked_fb();
 }
 
@@ -1866,8 +1877,8 @@ static void lcd_menu_fails_stats_total()
     uint16_t filam = eeprom_read_word((uint16_t*)EEPROM_FERROR_COUNT_TOT);
     uint16_t crashX = eeprom_read_word((uint16_t*)EEPROM_CRASH_COUNT_X_TOT);
     uint16_t crashY = eeprom_read_word((uint16_t*)EEPROM_CRASH_COUNT_Y_TOT);
-//	lcd_printf_P(PSTR(ESC_H(0,0) "Total failures" ESC_H(1,1) "Power failures  %-3d" ESC_H(1,2) "Filam. runouts  %-3d" ESC_H(1,3) "Crash  X %-3d  Y %-3d"), power, filam, crashX, crashY);
-	lcd_printf_P(PSTR(ESC_H(0,0) "%S" ESC_H(1,1) "%S  %-3d" ESC_H(1,2) "%S  %-3d" ESC_H(1,3) "%S  X %-3d  Y %-3d"), _i("Total failures"), _i("Power failures"), power, _i("Filam. runouts"), filam, _i("Crash"), crashX, crashY);
+	lcd_home();
+	lcd_printf_P(PSTR("%S\n" " %S  %-3d\n" " %S  %-3d\n" " %S  X %-3d  Y %-3d"), _i("Total failures"), _i("Power failures"), power, _i("Filam. runouts"), filam, _i("Crash"), crashX, crashY);
 	menu_back_if_clicked_fb();
 }
 
@@ -1884,8 +1895,8 @@ static void lcd_menu_fails_stats_print()
     uint8_t filam = eeprom_read_byte((uint8_t*)EEPROM_FERROR_COUNT);
     uint8_t crashX = eeprom_read_byte((uint8_t*)EEPROM_CRASH_COUNT_X);
     uint8_t crashY = eeprom_read_byte((uint8_t*)EEPROM_CRASH_COUNT_Y);
-//	lcd_printf_P(PSTR(ESC_H(0,0) "Last print failures" ESC_H(1,1) "Power failures  %-3d" ESC_H(1,2) "Filam. runouts  %-3d" ESC_H(1,3) "Crash  X %-3d  Y %-3d"), power, filam, crashX, crashY);
-	lcd_printf_P(PSTR(ESC_H(0,0) "%S" ESC_H(1,1) "%S  %-3d" ESC_H(1,2) "%S  %-3d" ESC_H(1,3) "%S  X %-3d  Y %-3d"), _i("Last print failures"), _i("Power failures"), power, _i("Filam. runouts"), filam, _i("Crash"), crashX, crashY);
+	lcd_home();
+	lcd_printf_P(PSTR("%S\n" " %S  %-3d\n" " %S  %-3d\n" " %S  X %-3d  Y %-3d"), _i("Last print failures"), _i("Power failures"), power, _i("Filam. runouts"), filam, _i("Crash"), crashX, crashY);
 	menu_back_if_clicked_fb();
 }
 
@@ -1926,7 +1937,8 @@ static void lcd_menu_fails_stats()
 	lcd_timeoutToStatus.stop(); //infinite timeout
     uint8_t filamentLast = eeprom_read_byte((uint8_t*)EEPROM_FERROR_COUNT);
     uint16_t filamentTotal = eeprom_read_word((uint16_t*)EEPROM_FERROR_COUNT_TOT);
-    lcd_printf_P(PSTR(ESC_H(0,0) "Last print failures" ESC_H(1,1) "Filam. runouts  %-3d" ESC_H(0,2) "Total failures" ESC_H(1,3) "Filam. runouts  %-3d"), filamentLast, filamentTotal);
+	lcd_home();
+    lcd_printf_P(PSTR("Last print failures\n" " Filam. runouts  %-3d\n" "Total failures\n" " Filam. runouts  %-3d"), filamentLast, filamentTotal);
     menu_back_if_clicked();
 }
 #else
@@ -1950,7 +1962,8 @@ extern char* __malloc_heap_end;
 static void lcd_menu_debug()
 {
 #ifdef DEBUG_STACK_MONITOR
-	lcd_printf_P(PSTR(ESC_H(1,1) "RAM statistics" ESC_H(5,1) "SP_min: 0x%04x" ESC_H(1,2) "heap_start: 0x%04x" ESC_H(3,3) "heap_end: 0x%04x"), SP_min, __malloc_heap_start, __malloc_heap_end);
+	lcd_home();
+	lcd_printf_P(PSTR("RAM statistics\n" " SP_min: 0x%04x\n" " heap_start: 0x%04x\n" " heap_end: 0x%04x"), SP_min, __malloc_heap_start, __malloc_heap_end);
 #endif //DEBUG_STACK_MONITOR
 
 	menu_back_if_clicked_fb();
@@ -1960,12 +1973,12 @@ static void lcd_menu_debug()
 static void lcd_menu_temperatures()
 {
 	lcd_timeoutToStatus.stop(); //infinite timeout
-
-	lcd_printf_P(PSTR(ESC_H(1,0) "%S:   %d%c" ESC_H(1,1) "%S:      %d%c"), _i("Nozzle"), (int)current_temperature[0], '\x01', _i("Bed"), (int)current_temperature_bed, '\x01');
+	lcd_home();
+	lcd_printf_P(PSTR(" %S:   %d%c \n" " %S:      %d%c \n"), _i("Nozzle"), (int)current_temperature[0], '\x01', _i("Bed"), (int)current_temperature_bed, '\x01');
 #ifdef AMBIENT_THERMISTOR
-	lcd_printf_P(PSTR(ESC_H(1,2) "%S:  %d%c" ESC_H(1,3) "PINDA:    %d%c"), _i("Ambient"), (int)current_temperature_ambient, '\x01', (int)current_temperature_pinda, '\x01');
+	lcd_printf_P(PSTR(" %S:  %d%c\n" " PINDA:    %d%c"), _i("Ambient"), (int)current_temperature_ambient, '\x01', (int)current_temperature_pinda, '\x01');
 #else //AMBIENT_THERMISTOR
-	lcd_printf_P(PSTR(ESC_H(1,2) "PINDA:    %d%c"), (int)current_temperature_pinda, '\x01');
+	lcd_printf_P(PSTR(" PINDA:    %d%c"), (int)current_temperature_pinda, '\x01');
 #endif //AMBIENT_THERMISTOR
 
     menu_back_if_clicked();
@@ -1981,7 +1994,8 @@ static void lcd_menu_voltages()
 	lcd_timeoutToStatus.stop(); //infinite timeout
 	float volt_pwr = VOLT_DIV_REF * ((float)current_voltage_raw_pwr / (1023 * OVERSAMPLENR)) / VOLT_DIV_FAC;
 	float volt_bed = VOLT_DIV_REF * ((float)current_voltage_raw_bed / (1023 * OVERSAMPLENR)) / VOLT_DIV_FAC;
-	lcd_printf_P(PSTR(ESC_H(1,1)"PWR:      %d.%01dV" ESC_H(1,2)"BED:      %d.%01dV"), (int)volt_pwr, (int)(10*fabs(volt_pwr - (int)volt_pwr)), (int)volt_bed, (int)(10*fabs(volt_bed - (int)volt_bed)));
+	lcd_home();
+	lcd_printf_P(PSTR(" PWR:      %d.%01dV\n" " BED:      %d.%01dV"), (int)volt_pwr, (int)(10*fabs(volt_pwr - (int)volt_pwr)), (int)volt_bed, (int)(10*fabs(volt_bed - (int)volt_bed)));
     menu_back_if_clicked();
 }
 #endif //defined VOLT_BED_PIN || defined VOLT_PWR_PIN
@@ -1989,7 +2003,8 @@ static void lcd_menu_voltages()
 #ifdef TMC2130
 static void lcd_menu_belt_status()
 {
-    lcd_printf_P(PSTR(ESC_H(1,0) "%S" ESC_H(2,1) "X %d" ESC_H(2,2) "Y %d" ), _i("Belt status"), eeprom_read_word((uint16_t*)(EEPROM_BELTSTATUS_X)), eeprom_read_word((uint16_t*)(EEPROM_BELTSTATUS_Y)));
+	lcd_home();
+    lcd_printf_P(PSTR("%S\n" " X %d\n" " Y %d"), _i("Belt status"), eeprom_read_word((uint16_t*)(EEPROM_BELTSTATUS_X)), eeprom_read_word((uint16_t*)(EEPROM_BELTSTATUS_Y)));
     menu_back_if_clicked();
 }
 #endif //TMC2130
@@ -2572,7 +2587,7 @@ void lcd_change_success() {
 }
 
 static void lcd_loading_progress_bar(uint16_t loading_time_ms) { 
-	
+
 	for (uint_least8_t i = 0; i < 20; i++) {
 		lcd_set_cursor(i, 3);
 		lcd_print(".");
@@ -2683,10 +2698,12 @@ void lcd_alright() {
 
         if (cursor_pos > 3) {
           cursor_pos = 3;
+					Sound_MakeSound(e_SOUND_TYPE_BlindAlert);
         }
 
         if (cursor_pos < 1) {
           cursor_pos = 1;
+					Sound_MakeSound(e_SOUND_TYPE_BlindAlert);
         }
         lcd_set_cursor(0, 1);
         lcd_print(" ");
@@ -2697,6 +2714,7 @@ void lcd_alright() {
         lcd_set_cursor(0, cursor_pos);
         lcd_print(">");
         enc_dif = lcd_encoder_diff;
+				Sound_MakeSound(e_SOUND_TYPE_EncoderMove);
         _delay(100);
       }
 
@@ -2704,7 +2722,7 @@ void lcd_alright() {
 
 
     if (lcd_clicked()) {
-
+			Sound_MakeSound(e_SOUND_TYPE_ButtonEcho);
       lcd_change_fil_state = cursor_pos;
       _delay(500);
 
@@ -2811,18 +2829,13 @@ void lcd_menu_statistics()
 		const int _m = (_t - (_h * 3600ul)) / 60ul;
 		const int _s = _t - ((_h * 3600ul) + (_m * 60ul));
 
+		lcd_clear();
 		lcd_printf_P(_N(
-		  ESC_2J
-		  "%S:"
-		  ESC_H(6,1) "%8.2fm \n"
-		  "%S :"
-		  ESC_H(8,3) "%2dh %02dm %02ds"
-		  ),
-		 _i("Filament used"),
-		 _met,
-		 _i("Print time"),
-		 _h, _m, _s
-		);
+			"%S:\n"
+			"%8.2fm\n"
+			"%S:\n"
+			"%2dh %02dm %02ds"
+		),_i("Filament used"), _met, _i("Print time"), _h, _m, _s);
 		menu_back_if_clicked_fb();
 	}
 	else
@@ -2838,18 +2851,13 @@ void lcd_menu_statistics()
 		_hours = (_time - (_days * 1440)) / 60;
 		_minutes = _time - ((_days * 1440) + (_hours * 60));
 
+		lcd_clear();
 		lcd_printf_P(_N(
-		  ESC_2J
-		  "%S :"
-		  ESC_H(9,1) "%8.2f m\n"
-		  "%S :\n"
-		  "%7ldd :%2hhdh :%02hhd m"
-		 ),
-		 _i("Total filament"),
-		 _filament_m,
-		 _i("Total print time"),
-		 _days, _hours, _minutes
-		);
+			"%S:\n"
+			"%8.2fm\n"
+			"%S:\n"
+			"%7ldd :%2hhdh :%02hhdm"
+		), _i("Total filament"), _filament_m, _i("Total print time"), _days, _hours, _minutes);
 		KEEPALIVE_STATE(PAUSED_FOR_USER);
 		while (!lcd_clicked())
 		{
@@ -2947,8 +2955,8 @@ static void lcd_menu_xyz_y_min()
 //----------------------
 	float distanceMin[2];
     count_xyz_details(distanceMin);
+	lcd_home();
 	lcd_printf_P(_N(
-	  ESC_H(0,0)
 	  "%S:\n"
 	  "%S\n"
 	  "%S:\n"
@@ -2984,8 +2992,8 @@ static void lcd_menu_xyz_skew()
 //|Severe skew:   0.25d|
 //----------------------
     float angleDiff = eeprom_read_float((float*)(EEPROM_XYZ_CAL_SKEW));
+	lcd_home();
 	lcd_printf_P(_N(
-	  ESC_H(0,0)
 	  "%S:\n"
 	  "%S\n"
 	  "%S:  %5.2f\x01\n"
@@ -2996,10 +3004,14 @@ static void lcd_menu_xyz_skew()
 	 _i("Slight skew"), _deg(bed_skew_angle_mild),
 	 _i("Severe skew"), _deg(bed_skew_angle_extreme)
 	);
-	if (angleDiff < 100)
-		lcd_printf_P(_N(ESC_H(15,0)"%4.2f\x01"), _deg(angleDiff));
-	else
-		lcd_puts_P(_N(ESC_H(15,0)"N/A"));
+	if (angleDiff < 100){
+		lcd_set_cursor(15,0);
+		lcd_printf_P(_N("%4.2f\x01"), _deg(angleDiff));
+	}
+	else{
+		lcd_set_cursor(15,0);
+		lcd_puts_P(_N("N/A"));
+	}
     if (lcd_clicked())
         menu_goto(lcd_menu_xyz_offset, 0, true, true);
 }
@@ -3066,13 +3078,13 @@ static void lcd_move_z() {
  * other value leads to storing Z_AXIS
  * @param msg text to be displayed
  */
-static void _lcd_babystep(int axis, const char *msg) 
+static void lcd_babystep_z()
 {
 	typedef struct
-	{	// 19bytes total
-		int8_t status;                 // 1byte
-		int babystepMem[3];            // 6bytes
-		float babystepMemMM[3];        // 12bytes
+	{
+		int8_t status;
+		int16_t babystepMemZ;
+		float babystepMemMMZ;
 	} _menu_data_t;
 	static_assert(sizeof(menu_data)>= sizeof(_menu_data_t),"_menu_data_t doesn't fit into menu_data");
 	_menu_data_t* _md = (_menu_data_t*)&(menu_data[0]);
@@ -3082,18 +3094,20 @@ static void _lcd_babystep(int axis, const char *msg)
 		// Initialize its status.
 		_md->status = 1;
 		check_babystep();
-
-		EEPROM_read_B(EEPROM_BABYSTEP_X, &_md->babystepMem[0]);
-		EEPROM_read_B(EEPROM_BABYSTEP_Y, &_md->babystepMem[1]);
-		EEPROM_read_B(EEPROM_BABYSTEP_Z, &_md->babystepMem[2]);
+		
+		if(!is_sheet_initialized(eeprom_read_byte(&(EEPROM_Sheets_base->active_sheet)))){
+			_md->babystepMemZ = 0;
+		}
+		else{
+			_md->babystepMemZ = eeprom_read_word(reinterpret_cast<uint16_t *>(&(EEPROM_Sheets_base->
+					s[(eeprom_read_byte(&(EEPROM_Sheets_base->active_sheet)))].z_offset)));
+		}
 
 		// same logic as in babystep_load
 	    if (calibration_status() >= CALIBRATION_STATUS_LIVE_ADJUST)
-			_md->babystepMem[2] = 0;
+			_md->babystepMemZ = 0;
 
-		_md->babystepMemMM[0] = _md->babystepMem[0]/cs.axis_steps_per_unit[X_AXIS];
-		_md->babystepMemMM[1] = _md->babystepMem[1]/cs.axis_steps_per_unit[Y_AXIS];
-		_md->babystepMemMM[2] = _md->babystepMem[2]/cs.axis_steps_per_unit[Z_AXIS];
+		_md->babystepMemMMZ = _md->babystepMemZ/cs.axis_steps_per_unit[Z_AXIS];
 		lcd_draw_update = 1;
 		//SERIAL_ECHO("Z baby step: ");
 		//SERIAL_ECHO(_md->babystepMem[2]);
@@ -3104,46 +3118,49 @@ static void _lcd_babystep(int axis, const char *msg)
 	if (lcd_encoder != 0) 
 	{
 		if (homing_flag) lcd_encoder = 0;
-		_md->babystepMem[axis] += (int)lcd_encoder;
-		if (axis == 2)
-		{
-			if (_md->babystepMem[axis] < Z_BABYSTEP_MIN) _md->babystepMem[axis] = Z_BABYSTEP_MIN; //-3999 -> -9.99 mm
-			else if (_md->babystepMem[axis] > Z_BABYSTEP_MAX) _md->babystepMem[axis] = Z_BABYSTEP_MAX; //0
-			else
-			{
-				CRITICAL_SECTION_START
-				babystepsTodo[axis] += (int)lcd_encoder;
-				CRITICAL_SECTION_END		
-			}
-		}
-		_md->babystepMemMM[axis] = _md->babystepMem[axis]/cs.axis_steps_per_unit[axis]; 
+		_md->babystepMemZ += (int)lcd_encoder;
+
+        if (_md->babystepMemZ < Z_BABYSTEP_MIN) _md->babystepMemZ = Z_BABYSTEP_MIN; //-3999 -> -9.99 mm
+        else if (_md->babystepMemZ > Z_BABYSTEP_MAX) _md->babystepMemZ = Z_BABYSTEP_MAX; //0
+        else
+        {
+            CRITICAL_SECTION_START
+            babystepsTodo[Z_AXIS] += (int)lcd_encoder;
+            CRITICAL_SECTION_END
+        }
+
+		_md->babystepMemMMZ = _md->babystepMemZ/cs.axis_steps_per_unit[Z_AXIS];
 		_delay(50);
 		lcd_encoder = 0;
 		lcd_draw_update = 1;
 	}
 	if (lcd_draw_update)
 	{
+	    SheetFormatBuffer buffer;
+	    menu_format_sheet_E(EEPROM_Sheets_base->s[(eeprom_read_byte(&(EEPROM_Sheets_base->active_sheet)))], buffer);
+	    lcd_set_cursor(0, 0);
+	    lcd_print(buffer.c);
 	    lcd_set_cursor(0, 1);
-		menu_draw_float13(msg, _md->babystepMemMM[axis]);
+		menu_draw_float13(_i("Adjusting Z:"), _md->babystepMemMMZ); ////MSG_BABYSTEPPING_Z c=15 Beware: must include the ':' as its last character
 	}
 	if (LCD_CLICKED || menu_leaving)
 	{
 		// Only update the EEPROM when leaving the menu.
-		EEPROM_save_B(
-		(axis == X_AXIS) ? EEPROM_BABYSTEP_X : ((axis == Y_AXIS) ? EEPROM_BABYSTEP_Y : EEPROM_BABYSTEP_Z),
-		&_md->babystepMem[axis]);
-		if(Z_AXIS == axis) calibration_status_store(CALIBRATION_STATUS_CALIBRATED);
+		eeprom_update_word(reinterpret_cast<uint16_t *>(&(EEPROM_Sheets_base->
+                s[(eeprom_read_byte(&(EEPROM_Sheets_base->active_sheet)))].z_offset)),
+		        _md->babystepMemZ);
+		eeprom_update_byte(&(EEPROM_Sheets_base->s[(eeprom_read_byte(
+		        &(EEPROM_Sheets_base->active_sheet)))].bed_temp),
+		        target_temperature_bed);
+		eeprom_update_byte(&(EEPROM_Sheets_base->s[(eeprom_read_byte(
+		        &(EEPROM_Sheets_base->active_sheet)))].pinda_temp),
+		        current_temperature_pinda);
+		calibration_status_store(CALIBRATION_STATUS_CALIBRATED);
 	}
 	if (LCD_CLICKED) menu_back();
 }
 
 
-static void lcd_babystep_z()
-{
-	_lcd_babystep(Z_AXIS, (_i("Adjusting Z:")));////MSG_BABYSTEPPING_Z c=15 Beware: must include the ':' as its last character
-}
-
-
 typedef struct
 {	// 12bytes + 9bytes = 21bytes total
     menu_data_edit_t reserved; //12 bytes reserved for number editing functions
@@ -3661,20 +3678,24 @@ int8_t lcd_show_multiscreen_message_two_choices_and_wait_P(const char *msg, bool
 						lcd_set_cursor(7, 3);
 						lcd_puts_P((PSTR(">")));
 						yes = false;
+						Sound_MakeSound(e_SOUND_TYPE_EncoderMove);
 					}
 					else if (enc_dif > lcd_encoder_diff && !yes) {
 						lcd_puts_P((PSTR(">")));
 						lcd_set_cursor(7, 3);
 						lcd_puts_P((PSTR(" ")));
 						yes = true;
+						Sound_MakeSound(e_SOUND_TYPE_EncoderMove);
 					}
 					enc_dif = lcd_encoder_diff;
 				}
 				else {
+					Sound_MakeSound(e_SOUND_TYPE_BlindAlert);
 					break; //turning knob skips waiting loop
 				}
 			}
 			if (lcd_clicked()) {
+				Sound_MakeSound(e_SOUND_TYPE_ButtonEcho);
 				if (msg_next == NULL) {
 					//KEEPALIVE_STATE(IN_HANDLER);
 					lcd_set_custom_characters();
@@ -3747,16 +3768,20 @@ int8_t lcd_show_fullscreen_message_yes_no_and_wait_P(const char *msg, bool allow
 					lcd_set_cursor(0, 3);
 					lcd_puts_P((PSTR(">")));
 					yes = false;
+					Sound_MakeSound(e_SOUND_TYPE_EncoderMove);
+
 				}
 				else if (enc_dif > lcd_encoder_diff && !yes) {
 					lcd_puts_P((PSTR(">")));
 					lcd_set_cursor(0, 3);
 					lcd_puts_P((PSTR(" ")));
 					yes = true;
+					Sound_MakeSound(e_SOUND_TYPE_EncoderMove);
 				}
 				enc_dif = lcd_encoder_diff;
 		}
 		if (lcd_clicked()) {
+			Sound_MakeSound(e_SOUND_TYPE_ButtonEcho);
 			KEEPALIVE_STATE(IN_HANDLER);
 			return yes;
 		}
@@ -3935,6 +3960,20 @@ void lcd_menu_show_sensors_state()                // NOT static due to using ins
 	}
 }
 
+void prusa_statistics_err(char c){
+	SERIAL_ECHO("{[ERR:");
+	SERIAL_ECHO(c);
+	SERIAL_ECHO(']');
+	prusa_stat_farm_number();
+}
+
+static void prusa_statistics_case0(uint8_t statnr){
+	SERIAL_ECHO("{");
+	prusa_stat_printerstatus(statnr);
+	prusa_stat_farm_number();
+	prusa_stat_printinfo();
+}
+
 void prusa_statistics(int _message, uint8_t _fil_nr) {
 #ifdef DEBUG_DISABLE_PRUSA_STATISTICS
 	return;
@@ -3944,31 +3983,16 @@ void prusa_statistics(int _message, uint8_t _fil_nr) {
 
 	case 0: // default message
 		if (busy_state == PAUSED_FOR_USER) 
-		{
-			SERIAL_ECHO("{");
-			prusa_stat_printerstatus(15);
-			prusa_stat_farm_number();
-			prusa_stat_printinfo();
-			SERIAL_ECHOLN("}");
-			status_number = 15;
+		{   
+			prusa_statistics_case0(15);
 		}
 		else if (isPrintPaused || card.paused) 
 		{
-			SERIAL_ECHO("{");
-			prusa_stat_printerstatus(14);
-			prusa_stat_farm_number();
-			prusa_stat_printinfo();
-			SERIAL_ECHOLN("}");
-			status_number = 14;
+			prusa_statistics_case0(14);
 		}
-		else if (IS_SD_PRINTING)
+		else if (IS_SD_PRINTING || loading_flag)
 		{
-			SERIAL_ECHO("{");
-			prusa_stat_printerstatus(4);
-			prusa_stat_farm_number();
-			prusa_stat_printinfo();
-			SERIAL_ECHOLN("}");
-			status_number = 4;
+			prusa_statistics_case0(4);
 		}
 		else
 		{
@@ -3976,82 +4000,76 @@ void prusa_statistics(int _message, uint8_t _fil_nr) {
 			prusa_stat_printerstatus(1);
 			prusa_stat_farm_number();
 			prusa_stat_diameter();
-			SERIAL_ECHOLN("}");
 			status_number = 1;
 		}
 		break;
 
 	case 1:		// 1 heating
 		farm_status = 2;
-		SERIAL_ECHO("{");
+		SERIAL_ECHO('{');
 		prusa_stat_printerstatus(2);
 		prusa_stat_farm_number();
-		SERIAL_ECHOLN("}");
 		status_number = 2;
 		farm_timer = 1;
 		break;
 
 	case 2:		// heating done
 		farm_status = 3;
-		SERIAL_ECHO("{");
+		SERIAL_ECHO('{');
 		prusa_stat_printerstatus(3);
 		prusa_stat_farm_number();
-		SERIAL_ECHOLN("}");
+		SERIAL_ECHOLN('}');
 		status_number = 3;
 		farm_timer = 1;
 
-		if (IS_SD_PRINTING)
+		if (IS_SD_PRINTING || loading_flag)
 		{
 			farm_status = 4;
-			SERIAL_ECHO("{");
+			SERIAL_ECHO('{');
 			prusa_stat_printerstatus(4);
 			prusa_stat_farm_number();
-			SERIAL_ECHOLN("}");
 			status_number = 4;
 		}
 		else
 		{
-			SERIAL_ECHO("{");
+			SERIAL_ECHO('{');
 			prusa_stat_printerstatus(3);
 			prusa_stat_farm_number();
-			SERIAL_ECHOLN("}");
 			status_number = 3;
 		}
 		farm_timer = 1;
 		break;
 
 	case 3:		// filament change
-
+		// must do a return here to prevent doing SERIAL_ECHOLN("}") at the very end of this function
+		// saved a considerable amount of FLASH
+		return;
 		break;
 	case 4:		// print succesfull
 		SERIAL_ECHO("{[RES:1][FIL:");
 		MYSERIAL.print(int(_fil_nr));
-		SERIAL_ECHO("]");
+		SERIAL_ECHO(']');
 		prusa_stat_printerstatus(status_number);
 		prusa_stat_farm_number();
-		SERIAL_ECHOLN("}");
 		farm_timer = 2;
 		break;
 	case 5:		// print not succesfull
 		SERIAL_ECHO("{[RES:0][FIL:");
 		MYSERIAL.print(int(_fil_nr));
-		SERIAL_ECHO("]");
+		SERIAL_ECHO(']');
 		prusa_stat_printerstatus(status_number);
 		prusa_stat_farm_number();
-		SERIAL_ECHOLN("}");
 		farm_timer = 2;
 		break;
 	case 6:		// print done
 		SERIAL_ECHO("{[PRN:8]");
 		prusa_stat_farm_number();
-		SERIAL_ECHOLN("}");
 		status_number = 8;
 		farm_timer = 2;
 		break;
 	case 7:		// print done - stopped
 		SERIAL_ECHO("{[PRN:9]");
 		prusa_stat_farm_number();
-		SERIAL_ECHOLN("}");
 		status_number = 9;
 		farm_timer = 2;
 		break;
@@ -4059,49 +4077,38 @@ void prusa_statistics(int _message, uint8_t _fil_nr) {
 		SERIAL_ECHO("{[PRN:0][PFN:");
 		status_number = 0;
 		SERIAL_ECHO(farm_no);
-		SERIAL_ECHOLN("]}");
+		SERIAL_ECHO(']');
 		farm_timer = 2;
 		break;
 	case 20:		// echo farm no
-		SERIAL_ECHO("{");
+		SERIAL_ECHO('{');
 		prusa_stat_printerstatus(status_number);
 		prusa_stat_farm_number();
-		SERIAL_ECHOLN("}");
 		farm_timer = 4;
 		break;
 	case 21: // temperatures
-		SERIAL_ECHO("{");
+		SERIAL_ECHO('{');
 		prusa_stat_temperatures();
 		prusa_stat_farm_number();
 		prusa_stat_printerstatus(status_number);
-		SERIAL_ECHOLN("}");
 		break;
     case 22: // waiting for filament change
         SERIAL_ECHO("{[PRN:5]");
 		prusa_stat_farm_number();
-		SERIAL_ECHOLN("}");
 		status_number = 5;
         break;
 	
 	case 90: // Error - Thermal Runaway
-		SERIAL_ECHO("{[ERR:1]");
-		prusa_stat_farm_number();
-		SERIAL_ECHOLN("}");
+		prusa_statistics_err('1');
 		break;
 	case 91: // Error - Thermal Runaway Preheat
-		SERIAL_ECHO("{[ERR:2]");
-		prusa_stat_farm_number();
-		SERIAL_ECHOLN("}");
+		prusa_statistics_err('2');
 		break;
 	case 92: // Error - Min temp
-		SERIAL_ECHO("{[ERR:3]");
-		prusa_stat_farm_number();
-		SERIAL_ECHOLN("}");
+		prusa_statistics_err('3');
 		break;
 	case 93: // Error - Max temp
-		SERIAL_ECHO("{[ERR:4]");
-		prusa_stat_farm_number();
-		SERIAL_ECHOLN("}");
+		prusa_statistics_err('4');
 		break;
 
     case 99:		// heartbeat
@@ -4109,11 +4116,11 @@ void prusa_statistics(int _message, uint8_t _fil_nr) {
         prusa_stat_temperatures();
 		SERIAL_ECHO("[PFN:");
 		SERIAL_ECHO(farm_no);
-		SERIAL_ECHO("]");
-        SERIAL_ECHOLN("}");
+		SERIAL_ECHO(']');
             
         break;
 	}
+	SERIAL_ECHOLN('}');	
 
 }
 
@@ -4121,19 +4128,19 @@ static void prusa_stat_printerstatus(int _status)
 {
 	SERIAL_ECHO("[PRN:");
 	SERIAL_ECHO(_status);
-	SERIAL_ECHO("]");
+	SERIAL_ECHO(']');
 }
 
 static void prusa_stat_farm_number() {
 	SERIAL_ECHO("[PFN:");
 	SERIAL_ECHO(farm_no);
-	SERIAL_ECHO("]");
+	SERIAL_ECHO(']');
 }
 
 static void prusa_stat_diameter() {
 	SERIAL_ECHO("[DIA:");
 	SERIAL_ECHO(eeprom_read_word((uint16_t*)EEPROM_NOZZLE_DIAMETER_uM));
-	SERIAL_ECHO("]");
+	SERIAL_ECHO(']');
 }
 
 static void prusa_stat_temperatures()
@@ -4146,7 +4153,7 @@ static void prusa_stat_temperatures()
 	SERIAL_ECHO(current_temperature[0]);
 	SERIAL_ECHO("][ATB:");
 	SERIAL_ECHO(current_temperature_bed);
-	SERIAL_ECHO("]");
+	SERIAL_ECHO(']');
 }
 
 static void prusa_stat_printinfo()
@@ -4170,7 +4177,7 @@ static void prusa_stat_printinfo()
 	}
 	SERIAL_ECHO("][FWR:");
 	SERIAL_ECHO(FW_VERSION);
-	SERIAL_ECHO("]");
+	SERIAL_ECHO(']');
      prusa_stat_diameter();
 }
 
@@ -4336,7 +4343,8 @@ static void lcd_crash_mode_info()
 	static uint32_t tim = 0;
 	if ((tim + 1000) < _millis())
 	{
-		fputs_P(_i("\x1b[2JCrash detection can\x1b[1;0Hbe turned on only in\x1b[2;0HNormal mode"), lcdout);////MSG_CRASH_DET_ONLY_IN_NORMAL c=20 r=4
+		lcd_clear();
+		fputs_P(_i("Crash detection can\nbe turned on only in\nNormal mode"), lcdout);////MSG_CRASH_DET_ONLY_IN_NORMAL c=20 r=4
 		tim = _millis();
 	}
     menu_back_if_clicked();
@@ -4348,7 +4356,8 @@ static void lcd_crash_mode_info2()
 	static uint32_t tim = 0;
 	if ((tim + 1000) < _millis())
 	{
-		fputs_P(_i("\x1b[2JWARNING:\x1b[1;0HCrash detection\x1b[2;0Hdisabled in\x1b[3;0HStealth mode"), lcdout);////MSG_CRASH_DET_STEALTH_FORCE_OFF c=20 r=4
+		lcd_clear();
+		fputs_P(_i("WARNING:\nCrash detection\ndisabled in\nStealth mode"), lcdout);////MSG_CRASH_DET_STEALTH_FORCE_OFF c=20 r=4
 		tim = _millis();
 	}
     menu_back_if_clicked();
@@ -4677,6 +4686,7 @@ void lcd_toshiba_flash_air_compatibility_toggle()
 
 void lcd_v2_calibration()
 {
+	eeprom_update_byte(&(EEPROM_Sheets_base->active_sheet), selected_sheet);
 	if (mmu_enabled)
 	{
 	    const uint8_t filament = choose_menu_P(_i("Select PLA filament:"),_T(MSG_FILAMENT),_i("Cancel")); ////c=20 r=1  ////c=19 r=1
@@ -4788,6 +4798,7 @@ static void lcd_wizard_load()
 	if (mmu_enabled)
 	{
 		lcd_show_fullscreen_message_and_wait_P(_i("Please insert PLA filament to the first tube of MMU, then press the knob to load it."));////c=20 r=8
+		tmp_extruder = 0;
 	} 
 	else
 	{
@@ -5271,8 +5282,8 @@ do\
          case e_SOUND_MODE_SILENT:\
               MENU_ITEM_FUNCTION_P(_i(MSG_SOUND_MODE_SILENT),lcd_sound_state_set);\
               break;\
-         case e_SOUND_MODE_MUTE:\
-              MENU_ITEM_FUNCTION_P(_i(MSG_SOUND_MODE_MUTE),lcd_sound_state_set);\
+         case e_SOUND_MODE_BLIND:\
+              MENU_ITEM_FUNCTION_P(_i(MSG_SOUND_MODE_BLIND),lcd_sound_state_set);\
               break;\
          default:\
               MENU_ITEM_FUNCTION_P(_i(MSG_SOUND_MODE_LOUD),lcd_sound_state_set);\
@@ -5283,95 +5294,249 @@ while (0)
 //-//
 static void lcd_check_mode_set(void)
 {
-switch(eCheckMode)
+switch(oCheckMode)
      {
-     case e_CHECK_MODE_none:
-          eCheckMode=e_CHECK_MODE_warn;
+     case ClCheckMode::_None:
+          oCheckMode=ClCheckMode::_Warn;
           break;
-     case e_CHECK_MODE_warn:
-          eCheckMode=e_CHECK_MODE_strict;
+     case ClCheckMode::_Warn:
+          oCheckMode=ClCheckMode::_Strict;
           break;
-     case e_CHECK_MODE_strict:
-          eCheckMode=e_CHECK_MODE_none;
+     case ClCheckMode::_Strict:
+          oCheckMode=ClCheckMode::_None;
           break;
      default:
-          eCheckMode=e_CHECK_MODE_none;
+          oCheckMode=ClCheckMode::_None;
      }
-eeprom_update_byte((uint8_t*)EEPROM_CHECK_MODE,(uint8_t)eCheckMode);
+eeprom_update_byte((uint8_t*)EEPROM_CHECK_MODE,(uint8_t)oCheckMode);
 }
 
+#define SETTINGS_MODE \
+do\
+{\
+    switch(oCheckMode)\
+         {\
+         case ClCheckMode::_None:\
+              MENU_ITEM_FUNCTION_P(_i("Nozzle     [none]"),lcd_check_mode_set);\
+              break;\
+         case ClCheckMode::_Warn:\
+              MENU_ITEM_FUNCTION_P(_i("Nozzle     [warn]"),lcd_check_mode_set);\
+              break;\
+         case ClCheckMode::_Strict:\
+              MENU_ITEM_FUNCTION_P(_i("Nozzle   [strict]"),lcd_check_mode_set);\
+              break;\
+         default:\
+              MENU_ITEM_FUNCTION_P(_i("Nozzle     [none]"),lcd_check_mode_set);\
+         }\
+}\
+while (0)
+
 static void lcd_nozzle_diameter_set(void)
 {
 uint16_t nDiameter;
 
-switch(eNozzleDiameter)
+switch(oNozzleDiameter)
      {
-     case e_NOZZLE_DIAMETER_250:
-          eNozzleDiameter=e_NOZZLE_DIAMETER_400;
+     case ClNozzleDiameter::_Diameter_250:
+          oNozzleDiameter=ClNozzleDiameter::_Diameter_400;
           nDiameter=400;
           break;
-     case e_NOZZLE_DIAMETER_400:
-          eNozzleDiameter=e_NOZZLE_DIAMETER_600;
+     case ClNozzleDiameter::_Diameter_400:
+          oNozzleDiameter=ClNozzleDiameter::_Diameter_600;
           nDiameter=600;
           break;
-     case e_NOZZLE_DIAMETER_600:
-          eNozzleDiameter=e_NOZZLE_DIAMETER_250;
+     case ClNozzleDiameter::_Diameter_600:
+          oNozzleDiameter=ClNozzleDiameter::_Diameter_250;
           nDiameter=250;
           break;
      default:
-          eNozzleDiameter=e_NOZZLE_DIAMETER_400;
+          oNozzleDiameter=ClNozzleDiameter::_Diameter_400;
           nDiameter=400;
      }
-eeprom_update_byte((uint8_t*)EEPROM_NOZZLE_DIAMETER,(uint8_t)eNozzleDiameter);
+eeprom_update_byte((uint8_t*)EEPROM_NOZZLE_DIAMETER,(uint8_t)oNozzleDiameter);
 eeprom_update_word((uint16_t*)EEPROM_NOZZLE_DIAMETER_uM,nDiameter);
 }
 
-#define SETTINGS_MODE \
+#define SETTINGS_NOZZLE \
 do\
 {\
-    switch(eCheckMode)\
+    switch(oNozzleDiameter)\
          {\
-         case e_CHECK_MODE_none:\
-              MENU_ITEM_FUNCTION_P(_i("Action     [none]"),lcd_check_mode_set);\
+         case ClNozzleDiameter::_Diameter_250:\
+              MENU_ITEM_FUNCTION_P(_i("Nozzle d.  [0.25]"),lcd_nozzle_diameter_set);\
               break;\
-         case e_CHECK_MODE_warn:\
-              MENU_ITEM_FUNCTION_P(_i("Action     [warn]"),lcd_check_mode_set);\
+         case ClNozzleDiameter::_Diameter_400:\
+              MENU_ITEM_FUNCTION_P(_i("Nozzle d.  [0.40]"),lcd_nozzle_diameter_set);\
               break;\
-         case e_CHECK_MODE_strict:\
-              MENU_ITEM_FUNCTION_P(_i("Action   [strict]"),lcd_check_mode_set);\
+         case ClNozzleDiameter::_Diameter_600:\
+              MENU_ITEM_FUNCTION_P(_i("Nozzle d.  [0.60]"),lcd_nozzle_diameter_set);\
               break;\
          default:\
-              MENU_ITEM_FUNCTION_P(_i("Action     [none]"),lcd_check_mode_set);\
+              MENU_ITEM_FUNCTION_P(_i("Nozzle d.  [0.40]"),lcd_nozzle_diameter_set);\
          }\
 }\
 while (0)
 
-#define SETTINGS_NOZZLE \
+static void lcd_check_model_set(void)
+{
+switch(oCheckModel)
+     {
+     case ClCheckModel::_None:
+          oCheckModel=ClCheckModel::_Warn;
+          break;
+     case ClCheckModel::_Warn:
+          oCheckModel=ClCheckModel::_Strict;
+          break;
+     case ClCheckModel::_Strict:
+          oCheckModel=ClCheckModel::_None;
+          break;
+     default:
+          oCheckModel=ClCheckModel::_None;
+     }
+eeprom_update_byte((uint8_t*)EEPROM_CHECK_MODEL,(uint8_t)oCheckModel);
+}
+
+#define SETTINGS_MODEL \
+do\
+{\
+    switch(oCheckModel)\
+         {\
+         case ClCheckModel::_None:\
+              MENU_ITEM_FUNCTION_P(_i("Model      [none]"),lcd_check_model_set);\
+              break;\
+         case ClCheckModel::_Warn:\
+              MENU_ITEM_FUNCTION_P(_i("Model      [warn]"),lcd_check_model_set);\
+              break;\
+         case ClCheckModel::_Strict:\
+              MENU_ITEM_FUNCTION_P(_i("Model    [strict]"),lcd_check_model_set);\
+              break;\
+         default:\
+              MENU_ITEM_FUNCTION_P(_i("Model      [none]"),lcd_check_model_set);\
+         }\
+}\
+while (0)
+
+static void lcd_check_version_set(void)
+{
+switch(oCheckVersion)
+     {
+     case ClCheckVersion::_None:
+          oCheckVersion=ClCheckVersion::_Warn;
+          break;
+     case ClCheckVersion::_Warn:
+          oCheckVersion=ClCheckVersion::_Strict;
+          break;
+     case ClCheckVersion::_Strict:
+          oCheckVersion=ClCheckVersion::_None;
+          break;
+     default:
+          oCheckVersion=ClCheckVersion::_None;
+     }
+eeprom_update_byte((uint8_t*)EEPROM_CHECK_VERSION,(uint8_t)oCheckVersion);
+}
+
+#define SETTINGS_VERSION \
+do\
+{\
+    switch(oCheckVersion)\
+         {\
+         case ClCheckVersion::_None:\
+              MENU_ITEM_FUNCTION_P(_i("Firmware   [none]"),lcd_check_version_set);\
+              break;\
+         case ClCheckVersion::_Warn:\
+              MENU_ITEM_FUNCTION_P(_i("Firmware   [warn]"),lcd_check_version_set);\
+              break;\
+         case ClCheckVersion::_Strict:\
+              MENU_ITEM_FUNCTION_P(_i("Firmware [strict]"),lcd_check_version_set);\
+              break;\
+         default:\
+              MENU_ITEM_FUNCTION_P(_i("Firmware   [none]"),lcd_check_version_set);\
+         }\
+}\
+while (0)
+
+static void lcd_check_gcode_set(void)
+{
+switch(oCheckGcode)
+     {
+     case ClCheckGcode::_None:
+          oCheckGcode=ClCheckGcode::_Warn;
+          break;
+     case ClCheckGcode::_Warn:
+          oCheckGcode=ClCheckGcode::_Strict;
+          break;
+     case ClCheckGcode::_Strict:
+          oCheckGcode=ClCheckGcode::_None;
+          break;
+     default:
+          oCheckGcode=ClCheckGcode::_None;
+     }
+eeprom_update_byte((uint8_t*)EEPROM_CHECK_GCODE,(uint8_t)oCheckGcode);
+}
+
+#define SETTINGS_GCODE \
 do\
 {\
-    switch(eNozzleDiameter)\
+    switch(oCheckGcode)\
          {\
-         case e_NOZZLE_DIAMETER_250:\
-              MENU_ITEM_FUNCTION_P(_i("Nozzle     [0.25]"),lcd_nozzle_diameter_set);\
+         case ClCheckGcode::_None:\
+              MENU_ITEM_FUNCTION_P(_i("Gcode      [none]"),lcd_check_gcode_set);\
               break;\
-         case e_NOZZLE_DIAMETER_400:\
-              MENU_ITEM_FUNCTION_P(_i("Nozzle     [0.40]"),lcd_nozzle_diameter_set);\
+         case ClCheckGcode::_Warn:\
+              MENU_ITEM_FUNCTION_P(_i("Gcode      [warn]"),lcd_check_gcode_set);\
               break;\
-         case e_NOZZLE_DIAMETER_600:\
-              MENU_ITEM_FUNCTION_P(_i("Nozzle     [0.60]"),lcd_nozzle_diameter_set);\
+         case ClCheckGcode::_Strict:\
+              MENU_ITEM_FUNCTION_P(_i("Gcode    [strict]"),lcd_check_gcode_set);\
               break;\
          default:\
-              MENU_ITEM_FUNCTION_P(_i("Nozzle     [0.40]"),lcd_nozzle_diameter_set);\
+              MENU_ITEM_FUNCTION_P(_i("Gcode      [none]"),lcd_check_gcode_set);\
          }\
 }\
 while (0)
 
-static void lcd_checking_menu()
+static void lcd_checking_menu(void)
 {
 MENU_BEGIN();
-MENU_ITEM_BACK_P(_T(MSG_SETTINGS));
+MENU_ITEM_BACK_P(_T(MSG_HW_SETUP));
 SETTINGS_MODE;
-SETTINGS_NOZZLE;
+SETTINGS_MODEL;
+SETTINGS_VERSION;
+//-// temporarily disabled
+//SETTINGS_GCODE;
+MENU_END();
+}
+
+void lcd_hw_setup_menu(void)                      // can not be "static"
+{
+MENU_BEGIN();
+MENU_ITEM_BACK_P(_T(bSettings?MSG_SETTINGS:MSG_BACK)); // i.e. default menu-item / menu-item after checking mismatch
+
+MENU_ITEM_SUBMENU_E(EEPROM_Sheets_base->s[0], lcd_select_sheet_0_menu);
+MENU_ITEM_SUBMENU_E(EEPROM_Sheets_base->s[1], lcd_select_sheet_1_menu);
+MENU_ITEM_SUBMENU_E(EEPROM_Sheets_base->s[2], lcd_select_sheet_2_menu);
+
+//strncpy(buffer,_i("Sheet"),sizeof(buffer));
+//strncpy(buffer,_i(" "),sizeof(buffer));
+//strncpy(buffer,EEPROM_Sheets_base->s[0].name,sizeof(buffer));
+
+//const char* menu = EEPROM_Sheets_base->s[0].name.c_str();
+
+//const char *b = new char(buffer);
+//const char *b = const char *b = new char(buffer);(buffer);
+//printf_P(_N("UVLO - end %d\n"), _millis() - time_start);
+//SERIAL_ECHOPGM(buffer);
+//SERIAL_ECHOPGM(reinterpret_cast<const char*>(buffer));
+//SERIAL_ECHOPGM("lakdjushasdjaljsdakjsdn");
+//char* p = &buffer[0];
+
+//MENU_ITEM_SUBMENU_P(reinterpret_cast<const char*>(p),lcd_sheet_menu);
+
+//delete(b);
+
+if(!farm_mode){
+     SETTINGS_NOZZLE;
+     MENU_ITEM_SUBMENU_P(_i("Checks"), lcd_checking_menu);
+}
 MENU_END();
 }
 
@@ -5399,6 +5564,10 @@ static void lcd_settings_menu()
 		MENU_ITEM_FUNCTION_P(_i("Fans check  [off]"), lcd_set_fan_check);////MSG_FANS_CHECK_OFF c=17 r=1
 
 	SETTINGS_SILENT_MODE;
+
+     bSettings=true;                              // flag ('fake parameter') for 'lcd_hw_setup_menu()' function
+	MENU_ITEM_SUBMENU_P(_i("HW Setup"), lcd_hw_setup_menu);////MSG_HW_SETUP
+
 	SETTINGS_MMU_MODE;
 
 	MENU_ITEM_SUBMENU_P(_i("Mesh bed leveling"), lcd_mesh_bed_leveling_settings);////MSG_MBL_SETTINGS c=18 r=1
@@ -5426,9 +5595,6 @@ static void lcd_settings_menu()
 	MENU_ITEM_SUBMENU_P(_i("Select language"), lcd_language_menu);////MSG_LANGUAGE_SELECT
 #endif //(LANG_MODE != 0)
 
-	if (!farm_mode)
-          MENU_ITEM_SUBMENU_P(_i("Print checking"), lcd_checking_menu);
-
 	SETTINGS_SD;
 	SETTINGS_SOUND;
 
@@ -5475,7 +5641,7 @@ static void lcd_calibration_menu()
   if (!isPrintPaused)
   {
 	MENU_ITEM_FUNCTION_P(_i("Wizard"), lcd_wizard);////MSG_WIZARD c=17 r=1
-	MENU_ITEM_SUBMENU_P(_i("First layer cal."), lcd_v2_calibration);////MSG_V2_CALIBRATION c=17 r=1
+	MENU_ITEM_SUBMENU_P(_T(MSG_V2_CALIBRATION), lcd_v2_calibration);
 	MENU_ITEM_GCODE_P(_T(MSG_AUTO_HOME), PSTR("G28 W"));
 	MENU_ITEM_FUNCTION_P(_i("Selftest         "), lcd_selftest_v);////MSG_SELFTEST
 #ifdef MK1BP
@@ -5548,10 +5714,12 @@ void bowden_menu() {
 
 				if (cursor_pos > 3) {
 					cursor_pos = 3;
+					Sound_MakeSound(e_SOUND_TYPE_BlindAlert);
 				}
 
 				if (cursor_pos < 0) {
 					cursor_pos = 0;
+					Sound_MakeSound(e_SOUND_TYPE_BlindAlert);
 				}
 
 				lcd_set_cursor(0, 0);
@@ -5564,13 +5732,13 @@ void bowden_menu() {
 				lcd_print(" ");
 				lcd_set_cursor(0, cursor_pos);
 				lcd_print(">");
-
+				Sound_MakeSound(e_SOUND_TYPE_EncoderMove);
 				enc_dif = lcd_encoder_diff;
 				_delay(100);
 		}
 
 		if (lcd_clicked()) {
-
+			Sound_MakeSound(e_SOUND_TYPE_ButtonEcho);
 			lcd_clear();
 			while (1) {
 
@@ -5601,6 +5769,7 @@ void bowden_menu() {
 				}
 				_delay(100);
 				if (lcd_clicked()) {
+					Sound_MakeSound(e_SOUND_TYPE_ButtonEcho);
 					EEPROM_save_B(EEPROM_BOWDEN_LENGTH + cursor_pos * 2, &bowden_length[cursor_pos]);
 					if (lcd_show_fullscreen_message_yes_no_and_wait_P(PSTR("Continue with another bowden?"))) {
 						lcd_update_enable(true);
@@ -5646,8 +5815,14 @@ static char snmm_stop_print_menu() { //menu for choosing which filaments will be
 			if ((abs(enc_dif - lcd_encoder_diff)) > 1) {
 				if (enc_dif > lcd_encoder_diff) cursor_pos--;
 				if (enc_dif < lcd_encoder_diff) cursor_pos++;
-				if (cursor_pos > 3) cursor_pos = 3;
-				if (cursor_pos < 1) cursor_pos = 1;
+				if (cursor_pos > 3) {
+					cursor_pos = 3;
+					Sound_MakeSound(e_SOUND_TYPE_BlindAlert);
+				}
+				if (cursor_pos < 1){
+					cursor_pos = 1;
+					Sound_MakeSound(e_SOUND_TYPE_BlindAlert);
+				}	
 
 				lcd_set_cursor(0, 1);
 				lcd_print(" ");
@@ -5658,10 +5833,12 @@ static char snmm_stop_print_menu() { //menu for choosing which filaments will be
 				lcd_set_cursor(0, cursor_pos);
 				lcd_print(">");
 				enc_dif = lcd_encoder_diff;
+				Sound_MakeSound(e_SOUND_TYPE_EncoderMove);
 				_delay(100);
 			}
 		}
 		if (lcd_clicked()) {
+			Sound_MakeSound(e_SOUND_TYPE_ButtonEcho);
 			KEEPALIVE_STATE(IN_HANDLER);
 			return(cursor_pos - 1);
 		}
@@ -5713,7 +5890,8 @@ uint8_t choose_menu_P(const char *header, const char *item, const char *last_ite
 		}
 
 		if (cursor_pos > 3)
-		{
+		{		
+			Sound_MakeSound(e_SOUND_TYPE_BlindAlert);
             cursor_pos = 3;
             if (first < items_no - 3)
             {
@@ -5724,6 +5902,7 @@ uint8_t choose_menu_P(const char *header, const char *item, const char *last_ite
 
         if (cursor_pos < 1)
         {
+					Sound_MakeSound(e_SOUND_TYPE_BlindAlert);
             cursor_pos = 1;
             if (first > 0)
             {
@@ -5758,11 +5937,12 @@ uint8_t choose_menu_P(const char *header, const char *item, const char *last_ite
         lcd_print(" ");
         lcd_set_cursor(0, cursor_pos);
         lcd_print(">");
-
+				Sound_MakeSound(e_SOUND_TYPE_EncoderMove);
         _delay(100);
 
 		if (lcd_clicked())
 		{
+			Sound_MakeSound(e_SOUND_TYPE_ButtonEcho);
 		    KEEPALIVE_STATE(IN_HANDLER);
 			lcd_encoder_diff = 0;
 			return(cursor_pos + first - 1);
@@ -5817,6 +5997,7 @@ char reset_menu() {
 
 				if (cursor_pos > 3) {
 					cursor_pos = 3;
+					Sound_MakeSound(e_SOUND_TYPE_BlindAlert);
 					if (first < items_no - 4) {
 						first++;
 						lcd_clear();
@@ -5825,6 +6006,7 @@ char reset_menu() {
 
 				if (cursor_pos < 0) {
 					cursor_pos = 0;
+					Sound_MakeSound(e_SOUND_TYPE_BlindAlert);
 					if (first > 0) {
 						first--;
 						lcd_clear();
@@ -5840,6 +6022,7 @@ char reset_menu() {
 				lcd_print(" ");
 				lcd_set_cursor(0, cursor_pos);
 				lcd_print(">");
+				Sound_MakeSound(e_SOUND_TYPE_EncoderMove);
 				enc_dif = lcd_encoder_diff;
 				_delay(100);
 			}
@@ -5847,6 +6030,7 @@ char reset_menu() {
 		}
 
 		if (lcd_clicked()) {
+			Sound_MakeSound(e_SOUND_TYPE_ButtonEcho);
 			return(cursor_pos + first);
 		}
 
@@ -6155,6 +6339,7 @@ unsigned char lcd_choose_color() {
 				
 				if (cursor_pos > active_rows) {
 					cursor_pos = active_rows;
+					Sound_MakeSound(e_SOUND_TYPE_BlindAlert);
 					if (first < items_no - active_rows) {
 						first++;
 						lcd_clear();
@@ -6163,6 +6348,7 @@ unsigned char lcd_choose_color() {
 
 				if (cursor_pos < 1) {
 					cursor_pos = 1;
+					Sound_MakeSound(e_SOUND_TYPE_BlindAlert);
 					if (first > 0) {
 						first--;
 						lcd_clear();
@@ -6176,12 +6362,14 @@ unsigned char lcd_choose_color() {
 				lcd_print(" ");
 				lcd_set_cursor(0, cursor_pos);
 				lcd_print(">");
+				Sound_MakeSound(e_SOUND_TYPE_EncoderMove);
 				enc_dif = lcd_encoder_diff;
 				_delay(100);
 
 		}
 
 		if (lcd_clicked()) {
+			Sound_MakeSound(e_SOUND_TYPE_ButtonEcho);
 			switch(cursor_pos + first - 1) {
 			case 0: return 1; break;
 			case 1: return 0; break;
@@ -6290,6 +6478,7 @@ static void lcd_test_menu()
 void lcd_resume_print()
 {
     lcd_return_to_status();
+		lcd_reset_alert_level();
     lcd_setstatuspgm(_T(MSG_RESUMING_PRINT));
     lcd_reset_alert_level(); //for fan speed error
     restore_print_from_ram_and_continue(0.0);
@@ -6298,6 +6487,128 @@ void lcd_resume_print()
     isPrintPaused = false;
 }
 
+static void change_sheet()
+{
+	eeprom_update_byte(&(EEPROM_Sheets_base->active_sheet), selected_sheet);
+    menu_back(3);
+}
+
+static void change_sheet_from_menu(){
+	uint8_t next_sheet = eeprom_read_byte(&(EEPROM_Sheets_base->active_sheet))+1;
+	while(true){
+		if(next_sheet > 2) next_sheet = 0;
+		if(is_sheet_initialized(next_sheet)){
+			eeprom_update_byte(&(EEPROM_Sheets_base->active_sheet), next_sheet);
+			selected_sheet = next_sheet;
+			break;
+		}
+		else if (next_sheet == selected_sheet){
+			break;
+		}
+		else{
+			next_sheet++;
+		}
+	}
+	menu_back();
+}
+
+static void lcd_select_sheet_0_menu()
+{
+	selected_sheet = 0;
+	lcd_sheet_menu();
+}
+static void lcd_select_sheet_1_menu()
+{
+	selected_sheet = 1;
+	lcd_sheet_menu();
+}
+static void lcd_select_sheet_2_menu()
+{
+	selected_sheet = 2;
+	lcd_sheet_menu();
+}
+
+static void lcd_rename_sheet_menu()
+{
+    struct MenuData
+    {
+        bool initialized;
+        uint8_t selected;
+        char name[sizeof(Sheet::name)];
+    };
+    static_assert(sizeof(menu_data)>= sizeof(MenuData),"MenuData doesn't fit into menu_data");
+    MenuData* menuData = (MenuData*)&(menu_data[0]);
+
+    if (!menuData->initialized)
+    {
+        eeprom_read_block(menuData->name, EEPROM_Sheets_base->s[selected_sheet].name, sizeof(Sheet::name));
+        lcd_encoder = menuData->name[0];
+        menuData->initialized = true;
+    }
+    if (lcd_encoder < '\x20') lcd_encoder = '\x20';
+    if (lcd_encoder > '\x7F') lcd_encoder = '\x7F';
+
+    menuData->name[menuData->selected] = lcd_encoder;
+    lcd_set_cursor(0,0);
+    for (uint_least8_t i = 0; i < sizeof(Sheet::name); ++i)
+    {
+        lcd_putc(menuData->name[i]);
+    }
+    lcd_set_cursor(menuData->selected, 1);
+    lcd_putc('^');
+    if (lcd_clicked())
+    {
+        if ((menuData->selected + 1u) < sizeof(Sheet::name))
+        {
+            lcd_encoder = menuData->name[++(menuData->selected)];
+        }
+        else
+        {
+            eeprom_update_block(menuData->name,
+                EEPROM_Sheets_base->s[selected_sheet].name,
+                sizeof(Sheet::name));
+            menu_back();
+        }
+    }
+}
+
+static void lcd_reset_sheet()
+{
+    struct MenuData
+    {
+        bool initialized;
+        uint8_t selected;
+        char name[sizeof(Sheet::name)];
+    };
+    static_assert(sizeof(menu_data)>= sizeof(MenuData),"MenuData doesn't fit into menu_data");
+    MenuData* menuData = (MenuData*)&(menu_data[0]);
+    eeprom_read_block(menuData->name, EEPROM_Sheets_base->s[selected_sheet].name, sizeof(Sheet::name));
+    
+	menuData->initialized = false;
+    strcpy_P(menuData->name, (char *)pgm_read_word(&(defaultSheetNames[selected_sheet])));
+
+
+	eeprom_update_word(reinterpret_cast<uint16_t *>(&(EEPROM_Sheets_base->s[selected_sheet].z_offset)),0xffff);
+	eeprom_update_block(menuData->name,EEPROM_Sheets_base->s[selected_sheet].name,sizeof(Sheet::name));
+	menu_back(2);
+}
+
+static void lcd_sheet_menu()
+{
+    MENU_BEGIN();
+    MENU_ITEM_BACK_P(_T(MSG_HW_SETUP));
+
+	if(is_sheet_initialized(selected_sheet)){
+	    MENU_ITEM_SUBMENU_P(_i("Select"), change_sheet); //// c=18
+	}
+
+    MENU_ITEM_SUBMENU_P(_T(MSG_V2_CALIBRATION), lcd_v2_calibration);
+    MENU_ITEM_SUBMENU_P(_i("Rename"), lcd_rename_sheet_menu); //// c=18
+	MENU_ITEM_SUBMENU_P(_i("Reset"), lcd_reset_sheet); //// c=18
+
+    MENU_END();
+}
+
 static void lcd_main_menu()
 {
 
@@ -6319,55 +6630,6 @@ static void lcd_main_menu()
  MENU_ITEM_FUNCTION_P(PSTR("recover print"), recover_print);
  MENU_ITEM_FUNCTION_P(PSTR("power panic"), uvlo_);
 #endif //TMC2130_DEBUG
-
- /* if (farm_mode && !IS_SD_PRINTING )
-    {
-    
-        int tempScrool = 0;
-        if (lcd_draw_update == 0 && LCD_CLICKED == 0)
-            //_delay(100);
-            return; // nothing to do (so don't thrash the SD card)
-        uint16_t fileCnt = card.getnrfilenames();
-        
-        card.getWorkDirName();
-        if (card.filename[0] == '/')
-        {
-#if SDCARDDETECT == -1
-            MENU_ITEM_FUNCTION_P(_T(MSG_REFRESH), lcd_sd_refresh);
-#endif
-        } else {
-            MENU_ITEM_FUNCTION_P(PSTR(LCD_STR_FOLDER ".."), lcd_sd_updir);
-        }
-        
-        for (uint16_t i = 0; i < fileCnt; i++)
-        {
-            if (menu_item == menu_line)
-            {
-#ifndef SDCARD_RATHERRECENTFIRST
-                card.getfilename(i);
-#else
-                card.getfilename(fileCnt - 1 - i);
-#endif
-                if (card.filenameIsDir)
-                {
-                    MENU_ITEM_SDDIR(_T(MSG_CARD_MENU), card.filename, card.longFilename);
-                } else {
-                    
-                    MENU_ITEM_SDFILE(_T(MSG_CARD_MENU), card.filename, card.longFilename);
-                    
-                    
-                    
-                    
-                }
-            } else {
-                MENU_ITEM_DUMMY();
-            }
-        }
-        
-        MENU_ITEM_BACK_P(PSTR("- - - - - - - - -"));
-    
-        
-    }*/
  
   if ( ( IS_SD_PRINTING || is_usb_printing || (lcd_commands_type == LcdCommands::Layer1Cal)) && (current_position[Z_AXIS] < Z_HEIGHT_HIDE_LIVE_ADJUST_MENU) && !homing_flag && !mesh_bed_leveling_flag)
   {
@@ -6383,6 +6645,8 @@ static void lcd_main_menu()
     MENU_ITEM_SUBMENU_P(_i("Preheat"), lcd_preheat_menu);////MSG_PREHEAT
   }
 
+
+
 #ifdef SDSUPPORT
   if (card.cardOK || lcd_commands_type == LcdCommands::Layer1Cal)
   {
@@ -6395,7 +6659,14 @@ static void lcd_main_menu()
 			}
 			else
 			{
-			    MENU_ITEM_SUBMENU_P(_i("Resume print"), lcd_resume_print);////MSG_RESUME_PRINT
+				#ifdef FANCHECK
+					checkFanSpeed(); //Check manually to get most recent fan speed status
+					if(fan_check_error == EFCE_OK)
+							MENU_ITEM_SUBMENU_P(_i("Resume print"), lcd_resume_print);////MSG_RESUME_PRINT
+				#else
+					MENU_ITEM_SUBMENU_P(_i("Resume print"), lcd_resume_print);////MSG_RESUME_PRINT
+				#endif
+
 			}
 			MENU_ITEM_SUBMENU_P(_T(MSG_STOP_PRINT), lcd_sdcard_stop);
 		}
@@ -6473,6 +6744,11 @@ static void lcd_main_menu()
 
   }
 
+  if(!isPrintPaused && !IS_SD_PRINTING && !is_usb_printing && (lcd_commands_type != LcdCommands::Layer1Cal))
+  {
+	MENU_ITEM_SUBMENU_SELECT_SHEET_E(EEPROM_Sheets_base->s[eeprom_read_byte(&(EEPROM_Sheets_base->active_sheet))], change_sheet_from_menu);
+  }
+  
   if (!is_usb_printing && (lcd_commands_type != LcdCommands::Layer1Cal))
   {
 	  MENU_ITEM_SUBMENU_P(_i("Statistics  "), lcd_menu_statistics);////MSG_STATISTICS
@@ -6494,11 +6770,7 @@ static void lcd_main_menu()
 }
 
 void stack_error() {
-	SET_OUTPUT(BEEPER);
-if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE)||(eSoundMode==e_SOUND_MODE_SILENT))
-	WRITE(BEEPER, HIGH);
-	_delay(1000);
-	WRITE(BEEPER, LOW);
+	Sound_MakeCustom(1000,0,true);
 	lcd_display_message_fullscreen_P(_i("Error - static memory has been overwritten"));////MSG_STACK_ERROR c=20 r=4
 	//err_triggered = 1;
 	 while (1) delay_keep_alive(1000);
@@ -6528,7 +6800,7 @@ void stepper_timer_overflow() {
 static void lcd_colorprint_change() {
 	
 	enquecommand_P(PSTR("M600"));
-	
+
 	custom_message_type = CustomMsg::FilamentLoading; //just print status message
 	lcd_setstatuspgm(_T(MSG_FINISHING_MOVEMENTS));
 	lcd_return_to_status();
@@ -6690,8 +6962,8 @@ static void lcd_tune_menu()
           case e_SOUND_MODE_SILENT:
                MENU_ITEM_FUNCTION_P(_i(MSG_SOUND_MODE_SILENT),lcd_sound_state_set);
                break;
-          case e_SOUND_MODE_MUTE:
-               MENU_ITEM_FUNCTION_P(_i(MSG_SOUND_MODE_MUTE),lcd_sound_state_set);
+          case e_SOUND_MODE_BLIND:
+               MENU_ITEM_FUNCTION_P(_i(MSG_SOUND_MODE_BLIND),lcd_sound_state_set);
                break;
           default:
                MENU_ITEM_FUNCTION_P(_i(MSG_SOUND_MODE_LOUD),lcd_sound_state_set);
@@ -6802,7 +7074,6 @@ void lcd_print_stop()
      if(!card.sdprinting)
           {
           SERIAL_ECHOLNPGM("// action:cancel");   // for Octoprint
-          return;
           }
 	saved_printing = false;
 	cancel_heatup = true;
@@ -6856,6 +7127,7 @@ void lcd_sdcard_stop()
 
 	if (lcd_clicked())
 	{
+		Sound_MakeSound(e_SOUND_TYPE_ButtonEcho);
 		if ((int32_t)lcd_encoder == 1)
 		{
 			lcd_return_to_status();
@@ -8109,7 +8381,7 @@ static void menu_action_sdfile(const char* filename)
 
   //we are storing just first 8 characters of 8.3 filename assuming that extension is always ".gco"
   for (uint_least8_t i = 0; i < 8; i++) {
-	  if (strcmp((cmd + i + 4), end) == 0) { 
+	  if (strcmp((cmd + i + 4), end) == 0) {
 		  //filename is shorter then 8.3, store '\0' character on position where ".gco" string was found to terminate stored string properly
  		  eeprom_write_byte((uint8_t*)EEPROM_FILENAME + i, '\0');
 		  break;
@@ -8372,6 +8644,7 @@ void menu_lcd_lcdupdate_func(void)
 			if (lcd_draw_update == 0)
 			lcd_draw_update = 1;
 			lcd_encoder += lcd_encoder_diff / ENCODER_PULSES_PER_STEP;
+			Sound_MakeSound(e_SOUND_TYPE_EncoderMove);
 			lcd_encoder_diff = 0;
 			lcd_timeoutToStatus.start();
 		}

Firmware/ultralcd.h

@@ -7,9 +7,6 @@
 #include "menu.h"
 #include "mesh_bed_calibration.h"
 
-extern int lcd_puts_P(const char* str);
-extern int lcd_printf_P(const char* format, ...);
-
 extern void menu_lcd_longpress_func(void);
 extern void menu_lcd_charsetup_func(void);
 extern void menu_lcd_lcdupdate_func(void);
@@ -143,6 +140,10 @@ void lcd_ignore_click(bool b=true);
 void lcd_commands();
 
 
+extern bool bSettings;                            // flag (i.e. 'fake parameter') for 'lcd_hw_setup_menu()' function
+void lcd_hw_setup_menu(void);                     // NOT static due to using inside "util" module ("nozzle_diameter_check()")
+
+
 void change_extr(int extr);
 
 #ifdef SNMM

Firmware/util.cpp

@@ -27,7 +27,7 @@ const char STR_REVISION_RC   [] PROGMEM = "rc";
 
 inline bool is_whitespace_or_nl(char c)
 {
-    return c == ' ' || c == '\t' || c == '\n' || c == 'r';
+    return c == ' ' || c == '\t' || c == '\n' || c == '\r';
 }
 
 inline bool is_whitespace_or_nl_or_eol(char c)
@@ -295,16 +295,10 @@ bool show_upgrade_dialog_if_version_newer(const char *version_string)
         for (const char *c = version_string; ! is_whitespace_or_nl_or_eol(*c); ++ c)
             lcd_putc(*c);
         lcd_puts_at_P(0, 3, _i("Please upgrade."));////MSG_NEW_FIRMWARE_PLEASE_UPGRADE c=20
-if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
-        _tone(BEEPER, 1000);
-        delay_keep_alive(50);
-        _noTone(BEEPER);
+        Sound_MakeCustom(50,1000,false);
         delay_keep_alive(500);
-if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
-        _tone(BEEPER, 1000);
-        delay_keep_alive(50);
-        _noTone(BEEPER);
-        lcd_wait_for_click();
+        Sound_MakeCustom(50,1000,false);
+        lcd_wait_for_click_delay(30);
         lcd_update_enable(true);
         lcd_clear();
         lcd_update(0);
@@ -330,43 +324,276 @@ void update_current_firmware_version_to_eeprom()
 
 
 //-//
-eNOZZLE_DIAMETER eNozzleDiameter=e_NOZZLE_DIAMETER_400;
-eCHECK_MODE eCheckMode=e_CHECK_MODE_none;
+#define MSG_PRINT_CHECKING_FAILED_TIMEOUT 30
+
+ClNozzleDiameter oNozzleDiameter=ClNozzleDiameter::_Diameter_400;
+ClCheckMode oCheckMode=ClCheckMode::_None;
+ClCheckModel oCheckModel=ClCheckModel::_None;
+ClCheckVersion oCheckVersion=ClCheckVersion::_None;
+ClCheckGcode oCheckGcode=ClCheckGcode::_None;
 
 void fCheckModeInit()
 {
-eCheckMode=(eCHECK_MODE)eeprom_read_byte((uint8_t*)EEPROM_CHECK_MODE);
-if(eCheckMode==e_CHECK_MODE_NULL)
+oCheckMode=(ClCheckMode)eeprom_read_byte((uint8_t*)EEPROM_CHECK_MODE);
+if(oCheckMode==ClCheckMode::_Undef)
      {
-     eCheckMode=e_CHECK_MODE_warn;
-     eeprom_update_byte((uint8_t*)EEPROM_CHECK_MODE,(uint8_t)eCheckMode);
+     oCheckMode=ClCheckMode::_Warn;
+     eeprom_update_byte((uint8_t*)EEPROM_CHECK_MODE,(uint8_t)oCheckMode);
      }
 if(farm_mode)
-     eCheckMode=e_CHECK_MODE_strict;
-eNozzleDiameter=(eNOZZLE_DIAMETER)eeprom_read_byte((uint8_t*)EEPROM_NOZZLE_DIAMETER);
-if((eNozzleDiameter==e_NOZZLE_DIAMETER_NULL)&& !farm_mode)
+     oCheckMode=ClCheckMode::_Strict;
+oNozzleDiameter=(ClNozzleDiameter)eeprom_read_byte((uint8_t*)EEPROM_NOZZLE_DIAMETER);
+if((oNozzleDiameter==ClNozzleDiameter::_Diameter_Undef)&& !farm_mode)
      {
-     eNozzleDiameter=e_NOZZLE_DIAMETER_400;
-     eeprom_update_byte((uint8_t*)EEPROM_NOZZLE_DIAMETER,(uint8_t)eNozzleDiameter);
+     oNozzleDiameter=ClNozzleDiameter::_Diameter_400;
+     eeprom_update_byte((uint8_t*)EEPROM_NOZZLE_DIAMETER,(uint8_t)oNozzleDiameter);
      eeprom_update_word((uint16_t*)EEPROM_NOZZLE_DIAMETER_uM,400);
      }
+oCheckModel=(ClCheckModel)eeprom_read_byte((uint8_t*)EEPROM_CHECK_MODEL);
+if(oCheckModel==ClCheckModel::_Undef)
+     {
+     oCheckModel=ClCheckModel::_Warn;
+     eeprom_update_byte((uint8_t*)EEPROM_CHECK_MODEL,(uint8_t)oCheckModel);
+     }
+oCheckVersion=(ClCheckVersion)eeprom_read_byte((uint8_t*)EEPROM_CHECK_VERSION);
+if(oCheckVersion==ClCheckVersion::_Undef)
+     {
+     oCheckVersion=ClCheckVersion::_Warn;
+     eeprom_update_byte((uint8_t*)EEPROM_CHECK_VERSION,(uint8_t)oCheckVersion);
+     }
+oCheckGcode=(ClCheckGcode)eeprom_read_byte((uint8_t*)EEPROM_CHECK_GCODE);
+if(oCheckGcode==ClCheckGcode::_Undef)
+     {
+     oCheckGcode=ClCheckGcode::_Warn;
+     eeprom_update_byte((uint8_t*)EEPROM_CHECK_GCODE,(uint8_t)oCheckGcode);
+     }
 }
 
 void nozzle_diameter_check(uint16_t nDiameter)
 {
 uint16_t nDiameter_um;
 
+if(oCheckMode==ClCheckMode::_None)
+     return;
 nDiameter_um=eeprom_read_word((uint16_t*)EEPROM_NOZZLE_DIAMETER_uM);
 if(nDiameter==nDiameter_um)
      return;
-switch(eCheckMode)
+//SERIAL_ECHO_START;
+//SERIAL_ECHOLNPGM("Printer nozzle diameter differs from the G-code ...");
+//SERIAL_ECHOPGM("actual  : ");
+//SERIAL_ECHOLN((float)(nDiameter_um/1000.0));
+//SERIAL_ECHOPGM("expected: ");
+//SERIAL_ECHOLN((float)(nDiameter/1000.0));
+switch(oCheckMode)
+     {
+     case ClCheckMode::_Warn:
+//          lcd_show_fullscreen_message_and_wait_P(_i("Printer nozzle diameter differs from the G-code. Continue?"));
+lcd_display_message_fullscreen_P(_i("Printer nozzle diameter differs from the G-code. Continue?"));
+lcd_wait_for_click_delay(MSG_PRINT_CHECKING_FAILED_TIMEOUT);
+//???custom_message_type=CUSTOM_MSG_TYPE_STATUS; // display / status-line recovery
+lcd_update_enable(true);           // display / status-line recovery
+          break;
+     case ClCheckMode::_Strict:
+          lcd_show_fullscreen_message_and_wait_P(_i("Printer nozzle diameter differs from the G-code. Please check the value in settings. Print cancelled."));
+          lcd_print_stop();
+          break;
+     case ClCheckMode::_None:
+     case ClCheckMode::_Undef:
+          break;
+     }
+bSettings=false;                                  // flag ('fake parameter') for 'lcd_hw_setup_menu()' function
+menu_submenu(lcd_hw_setup_menu);
+}
+
+void printer_model_check(uint16_t nPrinterModel)
+{
+if(oCheckModel==ClCheckModel::_None)
+     return;
+if(nPrinterModel==nPrinterType)
+     return;
+//SERIAL_ECHO_START;
+//SERIAL_ECHOLNPGM("Printer model differs from the G-code ...");
+//SERIAL_ECHOPGM("actual  : ");
+//SERIAL_ECHOLN(nPrinterType);
+//SERIAL_ECHOPGM("expected: ");
+//SERIAL_ECHOLN(nPrinterModel);
+switch(oCheckModel)
+     {
+     case ClCheckModel::_Warn:
+//          lcd_show_fullscreen_message_and_wait_P(_i("Printer model differs from the G-code. Continue?"));
+lcd_display_message_fullscreen_P(_i("G-code sliced for a different printer type. Continue?"));
+lcd_wait_for_click_delay(MSG_PRINT_CHECKING_FAILED_TIMEOUT);
+//???custom_message_type=CUSTOM_MSG_TYPE_STATUS; // display / status-line recovery
+lcd_update_enable(true);           // display / status-line recovery
+          break;
+     case ClCheckModel::_Strict:
+          lcd_show_fullscreen_message_and_wait_P(_i("G-code sliced for a different printer type. Please re-slice the model again. Print cancelled."));
+          lcd_print_stop();
+          break;
+     case ClCheckModel::_None:
+     case ClCheckModel::_Undef:
+          break;
+     }
+}
+
+uint8_t mCompareValue(uint16_t nX,uint16_t nY)
+{
+if(nX>nY)
+     return((uint8_t)ClCompareValue::_Greater);
+if(nX<nY)
+     return((uint8_t)ClCompareValue::_Less);
+return((uint8_t)ClCompareValue::_Equal);
+}
+
+void fw_version_check(const char *pVersion)
+{
+uint16_t aVersion[4];
+uint8_t nCompareValueResult;
+
+if(oCheckVersion==ClCheckVersion::_None)
+     return;
+parse_version(pVersion,aVersion);
+nCompareValueResult=mCompareValue(aVersion[0],eeprom_read_word((uint16_t*)EEPROM_FIRMWARE_VERSION_MAJOR))<<6;
+nCompareValueResult+=mCompareValue(aVersion[1],eeprom_read_word((uint16_t*)EEPROM_FIRMWARE_VERSION_MINOR))<<4;
+nCompareValueResult+=mCompareValue(aVersion[2],eeprom_read_word((uint16_t*)EEPROM_FIRMWARE_VERSION_REVISION))<<2;
+nCompareValueResult+=mCompareValue(aVersion[3],eeprom_read_word((uint16_t*)EEPROM_FIRMWARE_VERSION_FLAVOR));
+if(nCompareValueResult==COMPARE_VALUE_EQUAL)
+     return;
+if((nCompareValueResult<COMPARE_VALUE_EQUAL)&&oCheckVersion==ClCheckVersion::_Warn)
+     return;
+//SERIAL_ECHO_START;
+//SERIAL_ECHOLNPGM("Printer FW version differs from the G-code ...");
+//SERIAL_ECHOPGM("actual  : ");
+//SERIAL_ECHOLN(FW_VERSION);
+//SERIAL_ECHOPGM("expected: ");
+//SERIAL_ECHOLN(pVersion);
+switch(oCheckVersion)
      {
-     case e_CHECK_MODE_warn:
-          lcd_show_fullscreen_message_and_wait_P(_i("Nozzle diameter doesn't match! Press the knob to continue."));
+     case ClCheckVersion::_Warn:
+//          lcd_show_fullscreen_message_and_wait_P(_i("Printer FW version differs from the G-code. Continue?"));
+lcd_display_message_fullscreen_P(_i("G-code sliced for a newer firmware. Continue?"));
+lcd_wait_for_click_delay(MSG_PRINT_CHECKING_FAILED_TIMEOUT);
+//???custom_message_type=CUSTOM_MSG_TYPE_STATUS; // display / status-line recovery
+lcd_update_enable(true);           // display / status-line recovery
           break;
-     case e_CHECK_MODE_strict:
-          lcd_show_fullscreen_message_and_wait_P(_i("Nozzle diameter doesn't match! Print is aborted, press the knob."));
+     case ClCheckVersion::_Strict:
+          lcd_show_fullscreen_message_and_wait_P(_i("G-code sliced for a newer firmware. Please update the firmware. Print cancelled."));
           lcd_print_stop();
           break;
+     case ClCheckVersion::_None:
+     case ClCheckVersion::_Undef:
+          break;
+     }
+}
+
+void gcode_level_check(uint16_t nGcodeLevel)
+{
+if(oCheckGcode==ClCheckGcode::_None)
+     return;
+if(nGcodeLevel==(uint16_t)GCODE_LEVEL)
+     return;
+if((nGcodeLevel<(uint16_t)GCODE_LEVEL)&&(oCheckGcode==ClCheckGcode::_Warn))
+     return;
+//SERIAL_ECHO_START;
+//SERIAL_ECHOLNPGM("Printer G-code level differs from the G-code ...");
+//SERIAL_ECHOPGM("actual  : ");
+//SERIAL_ECHOLN(GCODE_LEVEL);
+//SERIAL_ECHOPGM("expected: ");
+//SERIAL_ECHOLN(nGcodeLevel);
+switch(oCheckGcode)
+     {
+     case ClCheckGcode::_Warn:
+//          lcd_show_fullscreen_message_and_wait_P(_i("Printer G-code level differs from the G-code. Continue?"));
+lcd_display_message_fullscreen_P(_i("G-code sliced for a different level. Continue?"));
+lcd_wait_for_click_delay(MSG_PRINT_CHECKING_FAILED_TIMEOUT);
+//???custom_message_type=CUSTOM_MSG_TYPE_STATUS; // display / status-line recovery
+lcd_update_enable(true);           // display / status-line recovery
+          break;
+     case ClCheckGcode::_Strict:
+          lcd_show_fullscreen_message_and_wait_P(_i("G-code sliced for a different level. Please re-slice the model again. Print cancelled."));
+          lcd_print_stop();
+          break;
+     case ClCheckGcode::_None:
+     case ClCheckGcode::_Undef:
+          break;
+     }
+}
+
+//-// -> cmdqueue ???
+#define PRINTER_NAME_LENGTH ((sizeof(PRINTER_MMU_NAME)>sizeof(PRINTER_NAME))?(sizeof(PRINTER_MMU_NAME)-1):(sizeof(PRINTER_NAME)-1))
+#define GCODE_DELIMITER '"'
+#define ELLIPSIS "..."
+
+char* code_string(char* pStr,size_t* nLength)
+{
+char* pStrBegin;
+char* pStrEnd;
+
+pStrBegin=strchr(pStr,GCODE_DELIMITER);
+if(!pStrBegin)
+     return(NULL);
+pStrBegin++;
+pStrEnd=strchr(pStrBegin,GCODE_DELIMITER);
+if(!pStrEnd)
+     return(NULL);
+*nLength=pStrEnd-pStrBegin;
+return(pStrBegin);
+}
+
+void printer_smodel_check(char* pStrPos)
+{
+char* pResult;
+size_t nLength,nPrinterNameLength;
+bool bCheckOK;
+char sPrinterName[PRINTER_NAME_LENGTH+sizeof(ELLIPSIS)-1+1]="";
+
+nPrinterNameLength=strlen_P(::sPrinterName);
+pResult=code_string(pStrPos,&nLength);
+if(pResult!=NULL)
+     {
+     strlcpy(sPrinterName,pResult,min(nPrinterNameLength,nLength)+1);
+     if(nLength>nPrinterNameLength)
+          strcat(sPrinterName,ELLIPSIS);
+     bCheckOK=(nLength==nPrinterNameLength);
+     if(bCheckOK&&(!strncasecmp_P(pResult,::sPrinterName,nLength))) // i.e. string compare execute only if lengths are same
+          return;
+     }
+//SERIAL_ECHO_START;
+//SERIAL_ECHOLNPGM("Printer model differs from the G-code ...");
+//SERIAL_ECHOPGM("actual  : \"");
+//serialprintPGM(::sPrinterName);
+//SERIAL_ECHOLNPGM("\"");
+//SERIAL_ECHOPGM("expected: \"");
+////SERIAL_ECHO(sPrinterName);
+//SERIAL_ECHOLNPGM("\"");
+switch(oCheckModel)
+     {
+     case ClCheckModel::_Warn:
+//          lcd_show_fullscreen_message_and_wait_P(_i("Printer model differs from the G-code. Continue?"));
+lcd_display_message_fullscreen_P(_i("G-code sliced for a different printer type. Continue?"));
+lcd_wait_for_click_delay(MSG_PRINT_CHECKING_FAILED_TIMEOUT);
+//???custom_message_type=CUSTOM_MSG_TYPE_STATUS; // display / status-line recovery
+lcd_update_enable(true);           // display / status-line recovery
+          break;
+     case ClCheckModel::_Strict:
+          lcd_show_fullscreen_message_and_wait_P(_i("G-code sliced for a different printer type. Please re-slice the model again. Print cancelled."));
+          lcd_print_stop();
+          break;
+     case ClCheckModel::_None:
+     case ClCheckModel::_Undef:
+          break;
+     }
+}
+
+void fSetMmuMode(bool bMMu)
+{
+if(bMMu)
+     {
+     nPrinterType=pgm_read_word(&_nPrinterMmuType);
+     sPrinterName=_sPrinterMmuName;
+     }
+else {
+     nPrinterType=pgm_read_word(&_nPrinterType);
+     sPrinterName=_sPrinterName;
      }
 }

Firmware/util.h

@@ -35,27 +35,76 @@ inline void eeprom_update_int8(unsigned char* addr, int8_t v) {
 
 
 //-//
-#define e_CHECK_MODE_NULL 0xFF
-#define e_NOZZLE_DIAMETER_NULL 0xFF
+enum class ClPrintChecking:uint_least8_t
+{
+    _Nozzle=1,
+    _Model=2,
+    _Smodel=3,
+    _Version=4,
+    _Gcode=5
+};
 
-typedef enum
+enum class ClNozzleDiameter:uint_least8_t
 {
-    e_NOZZLE_DIAMETER_250,
-    e_NOZZLE_DIAMETER_400,
-    e_NOZZLE_DIAMETER_600
-} eNOZZLE_DIAMETER;
+    _Diameter_250=25,
+    _Diameter_400=40,
+    _Diameter_600=60,
+    _Diameter_Undef=EEPROM_EMPTY_VALUE
+};
 
-typedef enum
+enum class ClCheckMode:uint_least8_t
 {
-    e_CHECK_MODE_none,
-    e_CHECK_MODE_warn,
-    e_CHECK_MODE_strict
-} eCHECK_MODE;
+    _None,
+    _Warn,
+    _Strict,
+    _Undef=EEPROM_EMPTY_VALUE
+};
 
-extern eNOZZLE_DIAMETER eNozzleDiameter;
-extern eCHECK_MODE eCheckMode;
+enum class ClCheckModel:uint_least8_t
+{
+    _None,
+    _Warn,
+    _Strict,
+    _Undef=EEPROM_EMPTY_VALUE
+};
+
+enum class ClCheckVersion:uint_least8_t
+{
+    _None,
+    _Warn,
+    _Strict,
+    _Undef=EEPROM_EMPTY_VALUE
+};
+
+enum class ClCheckGcode:uint_least8_t
+{
+    _None,
+    _Warn,
+    _Strict,
+    _Undef=EEPROM_EMPTY_VALUE
+};
+
+#define COMPARE_VALUE_EQUAL (((uint8_t)ClCompareValue::_Equal<<6)+((uint8_t)ClCompareValue::_Equal<<4)+((uint8_t)ClCompareValue::_Equal<<2)+((uint8_t)ClCompareValue::_Equal))
+enum class ClCompareValue:uint_least8_t
+{
+    _Less=0,
+    _Equal=1,
+    _Greater=2
+};
+
+extern ClNozzleDiameter oNozzleDiameter;
+extern ClCheckMode oCheckMode;
+extern ClCheckModel oCheckModel;
+extern ClCheckVersion oCheckVersion;
+extern ClCheckGcode oCheckGcode;
 
 void fCheckModeInit();
 void nozzle_diameter_check(uint16_t nDiameter);
+void printer_model_check(uint16_t nPrinterModel);
+void printer_smodel_check(char* pStrPos);
+void fw_version_check(const char *pVersion);
+void gcode_level_check(uint16_t nGcodeLevel);
+
+void fSetMmuMode(bool bMMu);
 
 #endif /* UTIL_H */

Firmware/variants/1_75mm_MK2-RAMBo10a-E3Dv6full.h

@@ -2,12 +2,16 @@
 #define CONFIGURATION_PRUSA_H
 
 #include <limits.h>
+#include "printers.h"
 /*------------------------------------
 GENERAL SETTINGS
 *------------------------------------*/
 
 // Printer revision
 #define PRINTER_TYPE PRINTER_MK2
+#define PRINTER_NAME PRINTER_MK2_NAME
+#define PRINTER_MMU_TYPE PRINTER_MK2              // dummy item (due to successfully compilation / building only)
+#define PRINTER_MMU_NAME PRINTER_MK2_NAME         // dummy item (due to successfully compilation / building only)
 #define FILAMENT_SIZE "1_75mm_MK2"
 #define NOZZLE_TYPE "E3Dv6full"
 

Firmware/variants/1_75mm_MK2-RAMBo13a-E3Dv6full.h

@@ -2,12 +2,16 @@
 #define CONFIGURATION_PRUSA_H
 
 #include <limits.h>
+#include "printers.h"
 /*------------------------------------
 GENERAL SETTINGS
 *------------------------------------*/
 
 // Printer revision
 #define PRINTER_TYPE PRINTER_MK2
+#define PRINTER_NAME PRINTER_MK2_NAME
+#define PRINTER_MMU_TYPE PRINTER_MK2              // dummy item (due to successfully compilation / building only)
+#define PRINTER_MMU_NAME PRINTER_MK2_NAME         // dummy item (due to successfully compilation / building only)
 #define FILAMENT_SIZE "1_75mm_MK2"
 #define NOZZLE_TYPE "E3Dv6full"
 

Firmware/variants/1_75mm_MK25-RAMBo10a-E3Dv6full.h

@@ -2,12 +2,16 @@
 #define CONFIGURATION_PRUSA_H
 
 #include <limits.h>
+#include "printers.h"
 /*------------------------------------
  GENERAL SETTINGS
  *------------------------------------*/
 
 // Printer revision
 #define PRINTER_TYPE PRINTER_MK25
+#define PRINTER_NAME PRINTER_MK25_NAME
+#define PRINTER_MMU_TYPE PRINTER_MK25_MMU2
+#define PRINTER_MMU_NAME PRINTER_MK25_MMU2_NAME
 #define FILAMENT_SIZE "1_75mm_MK25"
 #define NOZZLE_TYPE "E3Dv6full"
 

Firmware/variants/1_75mm_MK25-RAMBo13a-E3Dv6full.h

@@ -2,12 +2,16 @@
 #define CONFIGURATION_PRUSA_H
 
 #include <limits.h>
+#include "printers.h"
 /*------------------------------------
  GENERAL SETTINGS
  *------------------------------------*/
 
 // Printer revision
 #define PRINTER_TYPE PRINTER_MK25
+#define PRINTER_NAME PRINTER_MK25_NAME
+#define PRINTER_MMU_TYPE PRINTER_MK25_MMU2
+#define PRINTER_MMU_NAME PRINTER_MK25_MMU2_NAME
 #define FILAMENT_SIZE "1_75mm_MK25"
 #define NOZZLE_TYPE "E3Dv6full"
 

Firmware/variants/1_75mm_MK25S-RAMBo10a-E3Dv6full.h

@@ -2,12 +2,16 @@
 #define CONFIGURATION_PRUSA_H
 
 #include <limits.h>
+#include "printers.h"
 /*------------------------------------
  GENERAL SETTINGS
  *------------------------------------*/
 
 // Printer revision
 #define PRINTER_TYPE PRINTER_MK25S
+#define PRINTER_NAME PRINTER_MK25S_NAME
+#define PRINTER_MMU_TYPE PRINTER_MK25S_MMU2
+#define PRINTER_MMU_NAME PRINTER_MK25S_MMU2_NAME
 #define FILAMENT_SIZE "1_75mm_MK25S"
 #define NOZZLE_TYPE "E3Dv6full"
 

Firmware/variants/1_75mm_MK25S-RAMBo13a-E3Dv6full.h

@@ -2,12 +2,16 @@
 #define CONFIGURATION_PRUSA_H
 
 #include <limits.h>
+#include "printers.h"
 /*------------------------------------
  GENERAL SETTINGS
  *------------------------------------*/
 
 // Printer revision
 #define PRINTER_TYPE PRINTER_MK25S
+#define PRINTER_NAME PRINTER_MK25S_NAME
+#define PRINTER_MMU_TYPE PRINTER_MK25S_MMU2
+#define PRINTER_MMU_NAME PRINTER_MK25S_MMU2_NAME
 #define FILAMENT_SIZE "1_75mm_MK25"
 #define NOZZLE_TYPE "E3Dv6full"
 

Firmware/variants/1_75mm_MK3-EINSy10a-E3Dv6full.h

@@ -2,12 +2,17 @@
 #define CONFIGURATION_PRUSA_H
 
 #include <limits.h>
+//-//
+#include "printers.h"
 /*------------------------------------
  GENERAL SETTINGS
  *------------------------------------*/
 
 // Printer revision
 #define PRINTER_TYPE PRINTER_MK3
+#define PRINTER_NAME PRINTER_MK3_NAME
+#define PRINTER_MMU_TYPE PRINTER_MK3_MMU2
+#define PRINTER_MMU_NAME PRINTER_MK3_MMU2_NAME
 #define FILAMENT_SIZE "1_75mm_MK3"
 #define NOZZLE_TYPE "E3Dv6full"
 

Firmware/variants/1_75mm_MK3S-EINSy10a-E3Dv6full.h

@@ -2,12 +2,16 @@
 #define CONFIGURATION_PRUSA_H
 
 #include <limits.h>
+#include "printers.h"
 /*------------------------------------
  GENERAL SETTINGS
  *------------------------------------*/
 
 // Printer revision
 #define PRINTER_TYPE PRINTER_MK3S
+#define PRINTER_NAME PRINTER_MK3S_NAME
+#define PRINTER_MMU_TYPE PRINTER_MK3S_MMU2
+#define PRINTER_MMU_NAME PRINTER_MK3S_MMU2_NAME
 #define FILAMENT_SIZE "1_75mm_MK3"
 #define NOZZLE_TYPE "E3Dv6full"
 
@@ -22,6 +26,9 @@
 #define STEEL_SHEET
 #define HAS_SECOND_SERIAL_PORT
 
+// PSU
+#define PSU_Delta                                 // uncomment if DeltaElectronics PSU installed
+
 
 // Uncomment the below for the E3D PT100 temperature sensor (with or without PT100 Amplifier)
 //#define E3D_PT100_EXTRUDER_WITH_AMP

PF-build.sh

@@ -2,6 +2,7 @@
 # This bash script is used to compile automatically the Prusa firmware with a dedicated build environment and settings
 # 
 # Supported OS: Windows 10, Linux64 bit
+# Beta OS: Linux32 bit
 #
 # Linux:
 #
@@ -10,9 +11,12 @@
 #
 # Linux Subsystem Ubuntu
 # 1. Follow these instructions
-# 2. Open Ubuntu bash and get latest updates with 'apt-get upgate'
+# 2. Open Ubuntu bash and get latest updates with 'apt-get update'
 # 3. Install zip with 'apt-get install zip'
-# 4. Add at top of ~/.bashrc following lines by using 'sudo nano ~/.bashrc'
+# 4. Install python3 with 'apt-get install python3'
+# 5. Add command 'ln -sf /usr/bin/python3.5 /usr/bin/python' to link python3 to python.
+#    Donnot istall 'python' as python 2.x has end of life see https://pythonclock.org/
+# 6. Add at top of ~/.bashrc following lines by using 'sudo nano ~/.bashrc'
 #
 #    export OS="Linux"
 #    export JAVA_TOOL_OPTIONS="-Djava.net.preferIPv4Stack=true"
@@ -44,11 +48,19 @@
 # gussner@WIN01 MINGW64 /d/Data/Prusa-Firmware
 # FW351-Build1778-1_75mm_MK25-RAMBo13a-E3Dv6full.hex
 #
-# Version: 1.0.1-Build_8
+# Why make Arduino IDE portable?
+# To have a distinguished Prusa Firmware build environment I decided to use Arduino IDE in portable mode.
+# - Changes made to other Arduino instances do not change anything in this build environment.
+#   By default Arduino IDE uses "users" and shared library folders which is useful as soon you update the Software.
+#   But in this case we need a stable and defined build environment, so keep it separated it kind of important.
+#   Some may argue that this is only used by a script, BUT as soon someone accidentally or on purpose starts Arduino IDE
+#   it will use the default Arduino IDE folders and so can corrupt the build environment.
+#
+# Version: 1.0.6-Build_9
 # Change log:
 # 12 Jan 2019, 3d-gussner, Fixed "compiler.c.elf.flags=-w -Os -Wl,-u,vfprintf -lprintf_flt -lm -Wl,--gc-sections" in 'platform.txt'
 # 16 Jan 2019, 3d-gussner, Build_2, Added development check to modify 'Configuration.h' to prevent unwanted LCD messages that Firmware is unknown
-# 17 Jan 2019, 3d-gussner, Build_3, Check for OS Windows or Linux and use the right build enviroment
+# 17 Jan 2019, 3d-gussner, Build_3, Check for OS Windows or Linux and use the right build environment
 # 10 Feb 2019, ropaha, Pull Request, Select variant from list while using build.sh
 # 10 Feb 2019, ropaha, change FW_DEV_VERSION automatically depending on FW_VERSION RC/BETA/ALPHA
 # 10 Feb 2019, 3d-gussner, 1st tests with english only 
@@ -76,108 +88,320 @@
 #                          $2 = multi language OR english only [ALL/EN_ONLY]
 #                          $3 = development status [GOLD/RC/BETA/ALPHA/DEVEL/DEBUG]
 #                          If one argument is wrong a list of valid one will be shown
-# 13 Mar 2019, 3d-gussner, MKbel updated the linux build enviromentto version 1.0.2 with an Fix maximum firmware flash size.
+# 13 Mar 2019, 3d-gussner, MKbel updated the linux build environment to version 1.0.2 with an Fix maximum firmware flash size.
 #                          So did I
+# 11 Jul 2019, deliopoulos,Updated to v1.0.6 as Prusa needs a new board definition for Firmware 3.8.x86_64
+#						   - Splitted the Download of Windows Arduino IDE 1.8.5 and Prusa specific part
+#                            --> less download volume needed and saves some time
+#
+# 13 Jul 2019, deliopoulos,Splitting of Ardunio IDE and Prusa parts also for Linux64
+# 13 Jul 2019, 3d-gussner, Added Linux 32-bit version (untested yet)
+#                          MacOS could be added in future if needs
+# 14 Jul 2019, 3d-gussner, Update preferences and make it really portable
+# 15 Jul 2019, 3d-gussner, New PF-build-env gihub branch
+# 16 Jul 2019, 3d-gussner, New Arduino_boards github fork
+# 17 Jul 2019, 3d-gussner, Final tests under Windows 10 and Linux Subsystem for Windows   
+# 18 Jul 2019, 3d-gussner, Added python check
+# 18 Jul 2019, deliopoulos, No need more for changing 'platform.txt' file as it comes with the Arduino Boards.
+# 18 Jul 2019, deliopoulos, Modified 'PF_BUILD_FILE_URL' to use 'BUILD_ENV' variable
+# 22 Jul 2019, 3d-gussner, Modiffied checks to check folder and/or installation output exists.
+# 22 Jul 2019, 3d-gussner, Added check if Arduino IDE 1.8.5 boards have been updated
+# 22 Jul 2019, 3d-gussner, Changed exit numbers 1-13 for prepare build env 21-28 for prepare compiling 31-36 compiling
+# 22 Jul 2019, 3d-gussner, Changed BOARD_URL to DRracers respository after he pulled my PR https://github.com/DRracer/Arduino_Boards/pull/1
+# 23 Jul 2019, 3d-gussner, Changed Build-env path to "PF-build-dl" as requested in PR https://github.com/prusa3d/Prusa-Firmware/pull/2028
+#                          Changed Hex-files folder to PF-build-hex as requested in PR
+# 23 Jul 2019, 3d-gussner, Added Finding OS version routine so supporting new OS should get easier
+# 26 Jul 2019, 3d-gussner, Change JSON repository to prusa3d after PR https://github.com/prusa3d/Arduino_Boards/pull/1 was merged
 
+#### Start check if OSTYPE is supported
+OS_FOUND=$( command -v uname)
 
-###Check if OSTYPE is supported
-if [ $OSTYPE == "msys" ]; then
+case $( "${OS_FOUND}" | tr '[:upper:]' '[:lower:]') in
+  linux*)
+    TARGET_OS="linux"
+   ;;
+  msys*|cygwin*|mingw*)
+    # or possible 'bash on windows'
+    TARGET_OS='windows'
+   ;;
+  nt|win*)
+    TARGET_OS='windows'
+    ;;
+  *)
+    TARGET_OS='unknown'
+    ;;
+esac
+# Windows
+if [ $TARGET_OS == "windows" ]; then
 	if [ $(uname -m) == "x86_64" ]; then
 		echo "$(tput setaf 2)Windows 64-bit found$(tput sgr0)"
+		Processor="64"
+	elif [ $(uname -m) == "i386" ]; then
+		echo "$(tput setaf 2)Windows 32-bit found$(tput sgr0)"
+		Processor="32"
+	else
+		echo "$(tput setaf 1)Unsupported OS: Windows $(uname -m)"
+		echo "Please refer to the notes of build.sh$(tput sgr0)"
+		exit 1
 	fi
-elif [ $OSTYPE == "linux-gnu" ]; then
+# Linux
+elif [ $TARGET_OS == "linux" ]; then
 	if [ $(uname -m) == "x86_64" ]; then
 		echo "$(tput setaf 2)Linux 64-bit found$(tput sgr0)"
+		Processor="64"
+	elif [[ $(uname -m) == "i386" || $(uname -m) == "i686" ]]; then
+		echo "$(tput setaf 2)Linux 32-bit found$(tput sgr0)"
+		Processor="32"
+	else
+		echo "$(tput setaf 1)Unsupported OS: Linux $(uname -m)"
+		echo "Please refer to the notes of build.sh$(tput sgr0)"
+		exit 1
 	fi
 else
 	echo "$(tput setaf 1)This script doesn't support your Operating system!"
 	echo "Please use Linux 64-bit or Windows 10 64-bit with Linux subsystem / git-bash"
 	echo "Read the notes of build.sh$(tput sgr0)"
-	exit
+	exit 1
 fi
 sleep 2
-###Prepare bash enviroment and check if wget and zip are available
+#### End check if OSTYPE is supported
+
+#### Prepare bash environment and check if wget, zip and other needed things are available
+# Check wget
 if ! type wget > /dev/null; then
 	echo "$(tput setaf 1)Missing 'wget' which is important to run this script"
 	echo "Please follow these instructions https://gist.github.com/evanwill/0207876c3243bbb6863e65ec5dc3f058 to install wget$(tput sgr0)"
-	exit
+	exit 2
 fi
+
+# Check for zip
 if ! type zip > /dev/null; then
-	if [ $OSTYPE == "msys" ]; then
+	if [ $TARGET_OS == "windows" ]; then
 		echo "$(tput setaf 1)Missing 'zip' which is important to run this script"
 		echo "Download and install 7z-zip from its official website https://www.7-zip.org/"
 		echo "By default, it is installed under the directory /c/Program Files/7-Zip in Windows 10 as my case."
 		echo "Run git Bash under Administrator privilege and"
 		echo "navigate to the directory /c/Program Files/Git/mingw64/bin,"
 		echo "you can run the command $(tput setaf 2)ln -s /c/Program Files/7-Zip/7z.exe zip.exe$(tput sgr0)"
-		exit
-	elif [ $OSTYPE == "linux-gnu" ]; then
+		exit 3
+	elif [ $TARGET_OS == "linux" ]; then
 		echo "$(tput setaf 1)Missing 'zip' which is important to run this script"
 		echo "install it with the command $(tput setaf 2)'sudo apt-get install zip'$(tput sgr0)"
-		exit
+		exit 3
+	fi
+fi
+# Check python ... needed during language build
+if ! type python > /dev/null; then
+	if [ $TARGET_OS == "windows" ]; then
+		echo "$(tput setaf 1)Missing 'python' which is important to run this script"
+		exit 4
+	elif [ $TARGET_OS == "linux" ]; then
+		echo "$(tput setaf 1)Missing 'python' which is important to run this script"
+		echo "As Python 2.x will not be maintained from 2020 please,"
+		echo "install it with the command $(tput setaf 2)'sudo apt-get install python3'."
+		echo "Check which version of Python3 has been installed using 'ls /usr/bin/python3*'"
+		echo "Use 'sudo ln -sf /usr/bin/python3.x /usr/bin/python' (where 'x' is your version number) to make it default.$(tput sgr0)"
+		exit 4
 	fi
 fi
-###End prepare bash enviroment
 
-BUILD_ENV="1.0.2"
+#### End prepare bash environment
+
+
+#### Set build environment 
+ARDUINO_ENV="1.8.5"
+BUILD_ENV="1.0.6"
+BOARD="PrusaResearchRambo"
+BOARD_VERSION="1.0.1"
+BOARD_URL="https://raw.githubusercontent.com/prusa3d/Arduino_Boards/master/IDE_Board_Manager/package_prusa3d_index.json"
+BOARD_FILENAME="prusa3drambo"
+BOARD_FILE_URL="https://raw.githubusercontent.com/prusa3d/Arduino_Boards/master/IDE_Board_Manager/prusa3drambo-1.0.1.tar.bz2"
+PF_BUILD_FILE_URL="https://github.com/3d-gussner/PF-build-env/releases/download/$BUILD_ENV/PF-build-env-$BUILD_ENV.zip"
+LIB="PrusaLibrary"
 SCRIPT_PATH="$( cd "$(dirname "$0")" ; pwd -P )"
 
 # List few useful data
 echo
-echo "Script path:" $SCRIPT_PATH
-echo "OS         :" $OS
-echo "OS type    :" $OSTYPE
+echo "Script path :" $SCRIPT_PATH
+echo "OS          :" $OS
+echo "OS type     :" $TARGET_OS
+echo ""
+echo "Ardunio IDE :" $ARDUINO_ENV
+echo "Build env   :" $BUILD_ENV
+echo "Board       :" $BOARD
+echo "Specific Lib:" $LIB
 echo ""
 
-#### Start prepare building
+#### Start prepare building environment
 
 #Check if build exists and creates it if not
-if [ ! -d "../build-env" ]; then
-    mkdir ../build-env || exit 2
+if [ ! -d "../PF-build-dl" ]; then
+    mkdir ../PF-build-dl || exit 5
 fi
 
-cd ../build-env || exit 3
+cd ../PF-build-dl || exit 6
+BUILD_ENV_PATH="$( cd "$(dirname "$0")" ; pwd -P )"
 
 # Check if PF-build-env-<version> exists and downloads + creates it if not
-# The build enviroment is based on the Arduino IDE 1.8.5 portal version with some changes
+# The build environment is based on the supported Arduino IDE portable version with some changes
 if [ ! -d "../PF-build-env-$BUILD_ENV" ]; then
 	echo "$(tput setaf 6)PF-build-env-$BUILD_ENV is missing ... creating it now for you$(tput sgr 0)"
 	mkdir ../PF-build-env-$BUILD_ENV
 	sleep 5
 fi
 
-if [ $OSTYPE == "msys" ]; then
-	if [ ! -f "PF-build-env-Win-$BUILD_ENV.zip" ]; then
-		echo "$(tput setaf 6)Downloading Windows build environment...$(tput setaf 2)"
+# Download and extract supported Arduino IDE depending on OS
+# Windows
+if [ $TARGET_OS == "windows" ]; then
+	if [ ! -f "arduino-$ARDUINO_ENV-windows.zip" ]; then
+		echo "$(tput setaf 6)Downloading Windows 32/64-bit Arduino IDE portable...$(tput setaf 2)"
 		sleep 2
-		wget https://github.com/3d-gussner/PF-build-env/releases/download/Win-$BUILD_ENV/PF-build-env-Win-$BUILD_ENV.zip || exit 4
-		#cp -f ../../PF-build-env/PF-build-env-Win-$BUILD_ENV.zip PF-build-env-Win-$BUILD_ENV.zip || exit4
+		wget https://downloads.arduino.cc/arduino-$ARDUINO_ENV-windows.zip || exit 7
 		echo "$(tput sgr 0)"
 	fi
-	if [ ! -d "../PF-build-env-$BUILD_ENV/$OSTYPE" ]; then
-		echo "$(tput setaf 6)Unzipping Windows build environment...$(tput setaf 2)"
+	if [ ! -d "../PF-build-env-$BUILD_ENV/$TARGET_OS-$Processor" ]; then
+		echo "$(tput setaf 6)Unzipping Windows 32/64-bit Arduino IDE portable...$(tput setaf 2)"
 		sleep 2
-		unzip PF-build-env-Win-$BUILD_ENV.zip -d ../PF-build-env-$BUILD_ENV/$OSTYPE || exit 4
+		unzip arduino-$ARDUINO_ENV-windows.zip -d ../PF-build-env-$BUILD_ENV || exit 7
+		mv ../PF-build-env-$BUILD_ENV/arduino-$ARDUINO_ENV ../PF-build-env-$BUILD_ENV/$TARGET_OS-$Processor
+		echo "# arduino-$ARDUINO_ENV-$TARGET_OS-$Processor" >> ../PF-build-env-$BUILD_ENV/arduino-$ARDUINO_ENV-$TARGET_OS-$Processor
 		echo "$(tput sgr0)"
 	fi
-	
 fi
-
-if [ $OSTYPE == "linux-gnu" ]; then
-	if [ ! -f "PF-build-env-Linux64-$BUILD_ENV.zip" ]; then
-		echo "$(tput setaf 6)Downloading Linux 64 build environment...$(tput setaf 2)"
+# Linux
+if [ $TARGET_OS == "linux" ]; then
+# 32 or 64 bit version
+	if [ ! -f "arduino-$ARDUINO_ENV-linux$Processor.tar.xz" ]; then
+		echo "$(tput setaf 6)Downloading Linux $Processor Arduino IDE portable...$(tput setaf 2)"
 		sleep 2
-		wget https://github.com/mkbel/PF-build-env/releases/download/$BUILD_ENV/PF-build-env-Linux64-$BUILD_ENV.zip || exit 3
-		echo "$(tput sgr0)"
+		wget --no-check-certificate https://downloads.arduino.cc/arduino-$ARDUINO_ENV-linux$Processor.tar.xz || exit 8
+		echo "$(tput sgr 0)"
 	fi
-
-	if [ ! -d "../PF-build-env-$BUILD_ENV/$OSTYPE" ]; then
-		echo "$(tput setaf 6)Unzipping Linux build enviroment...$(tput setaf 2)"
+	if [[ ! -d "../PF-build-env-$BUILD_ENV/$TARGET_OS-$Processor" && ! -e "../PF-build-env-$BUILD_ENV/arduino-$ARDUINO_ENV-$TARGET_OS-$Processor.txt" ]]; then
+		echo "$(tput setaf 6)Unzipping Linux $Processor Arduino IDE portable...$(tput setaf 2)"
 		sleep 2
-		unzip PF-build-env-Linux64-$BUILD_ENV.zip -d ../PF-build-env-$BUILD_ENV/$OSTYPE || exit 4
+		tar -xvf arduino-$ARDUINO_ENV-linux$Processor.tar.xz -C ../PF-build-env-$BUILD_ENV/ || exit 8
+		mv ../PF-build-env-$BUILD_ENV/arduino-$ARDUINO_ENV ../PF-build-env-$BUILD_ENV/$TARGET_OS-$Processor
+		echo "# arduino-$ARDUINO_ENV-$TARGET_OS-$Processor" >> ../PF-build-env-$BUILD_ENV/arduino-$ARDUINO_ENV-$TARGET_OS-$Processor.txt
 		echo "$(tput sgr0)"
 	fi
 fi
+# Make Arduino IDE portable
+if [ ! -d ../PF-build-env-$BUILD_ENV/$TARGET_OS-$Processor/ ]; then
+	mkdir ../PF-build-env-$BUILD_ENV/$TARGET_OS-$Processor/
+fi
+
+if [ ! -d ../PF-build-env-$BUILD_ENV/$TARGET_OS-$Processor/portable/ ]; then
+	mkdir ../PF-build-env-$BUILD_ENV/$TARGET_OS-$Processor/portable
+fi
+if [ ! -d ../PF-build-env-$BUILD_ENV/$TARGET_OS-$Processor/portable/output/ ]; then
+	mkdir ../PF-build-env-$BUILD_ENV/$TARGET_OS-$Processor/portable/output
+fi
+if [ ! -d ../PF-build-env-$BUILD_ENV/$TARGET_OS-$Processor/portable/packages/ ]; then
+	mkdir ../PF-build-env-$BUILD_ENV/$TARGET_OS-$Processor/portable/packages
+fi
+if [ ! -d ../PF-build-env-$BUILD_ENV/$TARGET_OS-$Processor/portable/sketchbook/ ]; then
+	mkdir ../PF-build-env-$BUILD_ENV/$TARGET_OS-$Processor/portable/sketchbook
+fi
+if [ ! -d ../PF-build-env-$BUILD_ENV/$TARGET_OS-$Processor/portable/sketchbook/libraries/ ]; then
+	mkdir ../PF-build-env-$BUILD_ENV/$TARGET_OS-$Processor/portable/sketchbook/libraries
+fi
+if [ ! -d ../PF-build-env-$BUILD_ENV/$TARGET_OS-$Processor/portable/staging/ ]; then
+	mkdir ../PF-build-env-$BUILD_ENV/$TARGET_OS-$Processor/portable/staging
+fi
+
+# Change Arduino IDE preferences
+if [ ! -e ../PF-build-env-$BUILD_ENV/Preferences-$TARGET_OS-$Processor.txt ]; then
+	echo "$(tput setaf 6)Setting $TARGET_OS-$Processor Arduino IDE preferences for portable GUI usage...$(tput setaf 2)"
+	sleep 2
+	echo "update.check"
+	sed -i 's/update.check = true/update.check = false/g' ../PF-build-env-$BUILD_ENV/$TARGET_OS-$Processor/lib/preferences.txt
+	echo "board"
+	sed -i 's/board = uno/board = rambo/g' ../PF-build-env-$BUILD_ENV/$TARGET_OS-$Processor/lib/preferences.txt
+	echo "editor.linenumbers"
+	sed -i 's/editor.linenumbers = false/editor.linenumbers = true/g' ../PF-build-env-$BUILD_ENV/$TARGET_OS-$Processor/lib/preferences.txt
+	echo "boardsmanager.additional.urls"
+	echo "boardsmanager.additional.urls=$BOARD_URL" >>../PF-build-env-$BUILD_ENV/$TARGET_OS-$Processor/lib/preferences.txt
+	echo "build.verbose=true" >>../PF-build-env-$BUILD_ENV/$TARGET_OS-$Processor/lib/preferences.txt
+	echo "compiler.cache_core=false" >>../PF-build-env-$BUILD_ENV/$TARGET_OS-$Processor/lib/preferences.txt
+	echo "compiler.warning_level=all" >>../PF-build-env-$BUILD_ENV/$TARGET_OS-$Processor/lib/preferences.txt
+	echo "# Preferences-$TARGET_OS-$Processor" >> ../PF-build-env-$BUILD_ENV/Preferences-$TARGET_OS-$Processor.txt
+	echo "$(tput sgr0)"
+fi
+
+# Download and extract Prusa Firmware related parts
+# Download and extract PrusaResearchRambo board
+if [ ! -f "$BOARD_FILENAME-$BOARD_VERSION.tar.bz2" ]; then
+	echo "$(tput setaf 6)Downloading Prusa Research AVR MK3 RAMBo EINSy build environment...$(tput setaf 2)"
+	sleep 2
+	wget $BOARD_FILE_URL || exit 9
+fi
+if [[ ! -d "../PF-build-env-$BUILD_ENV/$TARGET_OS-$Processor/portable/packages/$BOARD/hardware/avr/$BOARD_VERSION" || ! -e "../PF-build-env-$BUILD_ENV/$BOARD_FILENAME-$BOARD_VERSION-$TARGET_OS-$Processor.txt" ]]; then
+	echo "$(tput setaf 6)Unzipping $BOARD Arduino IDE portable...$(tput setaf 2)"
+	sleep 2
+	tar -xvf $BOARD_FILENAME-$BOARD_VERSION.tar.bz2 -C ../PF-build-env-$BUILD_ENV/ || exit 10
+	if [ ! -d ../PF-build-env-$BUILD_ENV/$TARGET_OS-$Processor/portable/packages/$BOARD ]; then
+		mkdir ../PF-build-env-$BUILD_ENV/$TARGET_OS-$Processor/portable/packages/$BOARD
+	fi
+	if [ ! -d ../PF-build-env-$BUILD_ENV/$TARGET_OS-$Processor/portable/packages/$BOARD ]; then
+		mkdir ../PF-build-env-$BUILD_ENV/$TARGET_OS-$Processor/portable/packages/$BOARD
+	fi
+	if [ ! -d ../PF-build-env-$BUILD_ENV/$TARGET_OS-$Processor/portable/packages/$BOARD/hardware ]; then
+		mkdir ../PF-build-env-$BUILD_ENV/$TARGET_OS-$Processor/portable/packages/$BOARD/hardware
+	fi
+	if [ ! -d ../PF-build-env-$BUILD_ENV/$TARGET_OS-$Processor/portable/packages/$BOARD/hardware/avr ]; then
+		mkdir ../PF-build-env-$BUILD_ENV/$TARGET_OS-$Processor/portable/packages/$BOARD/hardware/avr
+	fi
+	
+	mv ../PF-build-env-$BUILD_ENV/$BOARD_FILENAME-$BOARD_VERSION ../PF-build-env-$BUILD_ENV/$TARGET_OS-$Processor/portable/packages/$BOARD/hardware/avr/$BOARD_VERSION
+	echo "# $BOARD_FILENAME-$BOARD_VERSION" >> ../PF-build-env-$BUILD_ENV/$BOARD_FILENAME-$BOARD_VERSION-$TARGET_OS-$Processor.txt
+	echo "$(tput sgr 0)"
+fi	
+
+# Download and extract Prusa Firmware specific library files
+if [ ! -f "PF-build-env-$BUILD_ENV.zip" ]; then
+	echo "$(tput setaf 6)Downloading Prusa Firmware build environment...$(tput setaf 2)"
+	sleep 2
+	wget $PF_BUILD_FILE_URL || exit 11
+	echo "$(tput sgr 0)"
+fi
+if [ ! -e "../PF-build-env-$BUILD_ENV/PF-build-env-$BUILD_ENV-$TARGET_OS-$Processor.txt" ]; then
+	echo "$(tput setaf 6)Unzipping Prusa Firmware build environment...$(tput setaf 2)"
+	sleep 2
+	unzip -o PF-build-env-$BUILD_ENV.zip -d ../PF-build-env-$BUILD_ENV/$TARGET_OS-$Processor || exit 12
+	echo "# PF-build-env-$TARGET_OS-$Processor-$BUILD_ENV" >> ../PF-build-env-$BUILD_ENV/PF-build-env-$BUILD_ENV-$TARGET_OS-$Processor.txt
+	echo "$(tput sgr0)"
+fi
+
+# Check if User updated Arduino IDE 1.8.5 boardsmanager and tools
+if [ -d "../PF-build-env-$BUILD_ENV/$TARGET_OS-$Processor/portable/packages/arduino/tools" ]; then
+	echo "$(tput setaf 6)Arduino IDE boards / tools have been manually updated...$"
+	echo "Please don't update the 'Arduino AVR boards' as this will prevent running this script (tput setaf 2)"
+	sleep 2
+fi	
+if [ -d "../PF-build-env-$BUILD_ENV/$TARGET_OS-$Processor/portable/packages/arduino/tools/avr-gcc/4.9.2-atmel3.5.4-arduino2" ]; then
+	echo "$(tput setaf 6)PrusaReasearch compatible tools have been manually updated...$(tput setaf 2)"
+	sleep 2
+	echo "$(tput setaf 6)Copying Prusa Firmware build environment to manually updated boards / tools...$(tput setaf 2)"
+	sleep 2
+	cp -f ../PF-build-env-$BUILD_ENV/$TARGET_OS-$Processor/hardware/tools/avr/avr/lib/ldscripts/avr6.xn ../PF-build-env-$BUILD_ENV/$TARGET_OS-$Processor/portable/packages/arduino/tools/avr-gcc/4.9.2-atmel3.5.4-arduino2/avr/lib/ldscripts/avr6.xn
+	echo "# PF-build-env-portable-$TARGET_OS-$Processor-$BUILD_ENV" >> ../PF-build-env-$BUILD_ENV/PF-build-env-portable-$BUILD_ENV-$TARGET_OS-$Processor.txt
+	echo "$(tput sgr0)"
+fi	
+if [ -d "../PF-build-env-$BUILD_ENV/$TARGET_OS-$Processor/portable/packages/arduino/tools/avr-gcc/5.4.0-atmel3.6.1-arduino2" ]; then
+	echo "$(tput setaf 1)Arduino IDE tools have been updated manually to a non supported version!!!"
+	echo "Delete ../PF-build-env-$BUILD_ENV and start the script again"
+	echo "Script will not continue until this have been fixed $(tput setaf 2)"
+	sleep 2
+	echo "$(tput sgr0)"
+	exit 13
+fi
+
+
+#### End prepare building
+
+
+#### Start 
 cd $SCRIPT_PATH
 
 # First argument defines which variant of the Prusa Firmware will be compiled 
@@ -201,7 +425,7 @@ if [ -z "$1" ] ; then
 				;;
 			"Quit")
 				echo "You chose to stop"
-					exit 1
+					exit
 					;;
 			*)
 				echo "$(tput setaf 1)This is not a valid variant$(tput sgr0)"
@@ -215,7 +439,7 @@ else
 		echo "$(tput setaf 1)$1 could not be found in Firmware/variants please choose a valid one$(tput setaf 2)"
 		ls -1 $SCRIPT_PATH/Firmware/variants/*.h | xargs -n1 basename
 		echo "$(tput sgr0)"
-		exit
+		exit 21
 	fi
 fi
 
@@ -250,7 +474,7 @@ else
 	else
 		echo "$(tput setaf 1)Language argument is wrong!$(tput sgr0)"
 		echo "Only $(tput setaf 2)'ALL'$(tput sgr0) or $(tput setaf 2)'EN_ONLY'$(tput sgr0) are allowed as 2nd argument!"
-		exit
+		exit 22
 	fi
 fi
 #Check if DEV_STATUS is selected via argument 3
@@ -260,23 +484,23 @@ if [ ! -z "$3" ] ; then
 	else
 		echo "$(tput setaf 1)Development argument is wrong!$(tput sgr0)"
 		echo "Only $(tput setaf 2)'GOLD', 'RC', 'BETA', 'ALPHA', 'DEVEL' or 'DEBUG'$(tput sgr0) are allowed as 3rd argument!$(tput sgr0)"
-		exit
+		exit 23
 	fi
 fi
 
 #Set BUILD_ENV_PATH
-cd ../PF-build-env-$BUILD_ENV/$OSTYPE || exit 5
+cd ../PF-build-env-$BUILD_ENV/$TARGET_OS-$Processor || exit 24
 BUILD_ENV_PATH="$( pwd -P )"
 
 cd ../..
 
 #Checkif BUILD_PATH exists and if not creates it
 if [ ! -d "Prusa-Firmware-build" ]; then
-    mkdir Prusa-Firmware-build  || exit 6
+    mkdir Prusa-Firmware-build  || exit 25
 fi
 
 #Set the BUILD_PATH for Arduino IDE
-cd Prusa-Firmware-build || exit 7
+cd Prusa-Firmware-build || exit 26
 BUILD_PATH="$( pwd -P )"
 
 for v in ${VARIANTS[*]}
@@ -328,10 +552,10 @@ do
 		DEV_STATUS=$DEV_STATUS_SELECTED
 	fi
 	#Prepare hex files folders
-	if [ ! -d "$SCRIPT_PATH/../Hex-files/FW$FW-Build$BUILD/$MOTHERBOARD" ]; then
-		mkdir -p $SCRIPT_PATH/../Hex-files/FW$FW-Build$BUILD/$MOTHERBOARD || exit 10
+	if [ ! -d "$SCRIPT_PATH/../PF-build-hex/FW$FW-Build$BUILD/$MOTHERBOARD" ]; then
+		mkdir -p $SCRIPT_PATH/../PF-build-hex/FW$FW-Build$BUILD/$MOTHERBOARD || exit 27
 	fi
-	OUTPUT_FOLDER="Hex-files/FW$FW-Build$BUILD/$MOTHERBOARD"
+	OUTPUT_FOLDER="PF-build-hex/FW$FW-Build$BUILD/$MOTHERBOARD"
 	
 	#Check if exactly the same hexfile already exists
 	if [[ -f "$SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT.hex"  &&  "$LANGUAGES" == "ALL" ]]; then
@@ -366,11 +590,11 @@ do
 
 	#Prepare Firmware to be compiled by copying variant as Configuration_prusa.h
 	if [ ! -f "$SCRIPT_PATH/Firmware/Configuration_prusa.h" ]; then
-		cp -f $SCRIPT_PATH/Firmware/variants/$VARIANT.h $SCRIPT_PATH/Firmware/Configuration_prusa.h || exit 11
+		cp -f $SCRIPT_PATH/Firmware/variants/$VARIANT.h $SCRIPT_PATH/Firmware/Configuration_prusa.h || exit 28
 	else
 		echo "$(tput setaf 6)Configuration_prusa.h already exist it will be overwritten in 10 seconds by the chosen variant.$(tput sgr 0)"
 		read -t 10 -p "Press Enter to continue..."
-		cp -f $SCRIPT_PATH/Firmware/variants/$VARIANT.h $SCRIPT_PATH/Firmware/Configuration_prusa.h || exit 11
+		cp -f $SCRIPT_PATH/Firmware/variants/$VARIANT.h $SCRIPT_PATH/Firmware/Configuration_prusa.h || exit 28
 	fi
 
 	#Prepare Configuration.h to use the correct FW_DEV_VERSION to prevent LCD messages when connecting with OctoPrint
@@ -391,22 +615,9 @@ do
 	fi
 		
 	#Check if compiler flags are set to Prusa specific needs for the rambo board.
-	if [ $OSTYPE == "msys" ]; then
-		RAMBO_PLATFORM_FILE="rambo/hardware/avr/1.0.1/platform.txt"
-		COMP_FLAGS="compiler.c.elf.flags={compiler.warning_flags} -Os -g -flto -fuse-linker-plugin -Wl,-u,vfprintf -lprintf_flt -lm -Wl,--gc-sections"
-		CHECK_FLAGS=$(grep --max-count=1 "$COMP_FLAGS" $BUILD_ENV_PATH/portable/packages/$RAMBO_PLATFORM_FILE)
-		if [ -z "$CHECK_FLAGS" ]; then
-			echo "Compiler flags not found, adding flags"
-			if [ ! -f $BUILD_ENV_PATH/portable/packages/$RAMBO_PLATFORM_FILE.bck ]; then
-				echo "making a backup"
-				ls -1 $BUILD_ENV_PATH/portable/packages/rambo/hardware/avr/1.0.1/
-				cp -f $BUILD_ENV_PATH/portable/packages/$RAMBO_PLATFORM_FILE $BUILD_ENV_PATH/portable/packages/$RAMBO_PLATFORM_FILE.bck
-			fi
-			echo $COMP_FLAGS >> $BUILD_ENV_PATH/portable/packages/$RAMBO_PLATFORM_FILE
-		else
-			echo "Compiler flags are set in rambo platform.txt" $CHECK_FLAGS
-		fi
-	fi	
+#	if [ $TARGET_OS == "windows" ]; then
+#		RAMBO_PLATFORM_FILE="PrusaResearchRambo/avr/platform.txt"
+#	fi	
 	
 	#### End of Prepare building
 		
@@ -414,37 +625,28 @@ do
 		
 	export ARDUINO=$BUILD_ENV_PATH
 	#echo $BUILD_ENV_PATH
-	export BUILDER=$ARDUINO/arduino-builder
+	#export BUILDER=$ARDUINO/arduino-builder
 
 	echo
 	#read -t 5 -p "Press Enter..."
 	echo 
 
-	if [ $OSTYPE == "msys" ]; then
-		echo "Start to build Prusa Firmware under Windows..."
-		echo "Using variant $VARIANT$(tput setaf 3)"
-		sleep 2
-		#$BUILDER -dump-prefs -logger=machine -hardware $ARDUINO/hardware -hardware $ARDUINO/portable/packages -tools $ARDUINO/tools-builder -tools $ARDUINO/hardware/tools/avr -tools $ARDUINO/portable/packages -built-in-libraries $ARDUINO/libraries -libraries $ARDUINO/portable/sketchbook/libraries -fqbn=rambo:avr:rambo -ide-version=10805 -build-path=$BUILD_PATH -warnings=none -quiet $SCRIPT_PATH/Firmware/Firmware.ino || exit 12
-		#$BUILDER -compile -logger=machine -hardware $ARDUINO/hardware -hardware $ARDUINO/portable/packages -tools $ARDUINO/tools-builder -tools $ARDUINO/hardware/tools/avr -tools $ARDUINO/portable/packages -built-in-libraries $ARDUINO/libraries -libraries $ARDUINO/portable/sketchbook/libraries -fqbn=rambo:avr:rambo -ide-version=10805 -build-path=$BUILD_PATH -warnings=none -quiet $SCRIPT_PATH/Firmware/Firmware.ino || exit 13
-		$BUILDER -compile -hardware $ARDUINO/hardware -hardware $ARDUINO/portable/packages -tools $ARDUINO/tools-builder -tools $ARDUINO/hardware/tools/avr -tools $ARDUINO/portable/packages -built-in-libraries $ARDUINO/libraries -libraries $ARDUINO/portable/sketchbook/libraries -fqbn=rambo:avr:rambo -ide-version=10805 -build-path=$BUILD_PATH -warnings=default $SCRIPT_PATH/Firmware/Firmware.ino || exit 14
-		echo "$(tput sgr 0)"
-	fi
-	if [ $OSTYPE == "linux-gnu" ] ; then
-		echo "Start to build Prusa Firmware under Linux 64..."
-		echo "Using variant $VARIANT$(tput setaf 3)"
-		sleep 2
-		$BUILD_ENV_PATH/arduino $SCRIPT_PATH/Firmware/Firmware.ino --verify --board rambo:avr:rambo --pref build.path=$BUILD_PATH || exit 14
-		echo "$(tput sgr 0)"
-	fi
+	echo "Start to build Prusa Firmware ..."
+	echo "Using variant $VARIANT$(tput setaf 3)"
+	sleep 2
+	#$BUILD_ENV_PATH/arduino-builder -dump-prefs -debug-level 10 -compile -hardware $ARDUINO/hardware -hardware $ARDUINO/portable/packages -tools $ARDUINO/tools-builder -tools $ARDUINO/hardware/tools/avr -tools $ARDUINO/portable/packages -built-in-libraries $ARDUINO/libraries -libraries $ARDUINO/portable/sketchbook/libraries -fqbn=$BOARD:avr:rambo -ide-version=10805 -build-path=$BUILD_PATH -warnings=all $SCRIPT_PATH/Firmware/Firmware.ino || exit 14
+	$BUILD_ENV_PATH/arduino-builder -compile -hardware $ARDUINO/hardware -hardware $ARDUINO/portable/packages -tools $ARDUINO/tools-builder -tools $ARDUINO/hardware/tools/avr -tools $ARDUINO/portable/packages -built-in-libraries $ARDUINO/libraries -libraries $ARDUINO/portable/sketchbook/libraries -fqbn=$BOARD:avr:rambo -ide-version=10805 -build-path=$BUILD_PATH -warnings=all $SCRIPT_PATH/Firmware/Firmware.ino || exit 14
+	echo "$(tput sgr 0)"
 
 	if [ $LANGUAGES ==  "ALL" ]; then
 		echo "$(tput setaf 2)"
+
 		echo "Building multi language firmware" $MULTI_LANGUAGE_CHECK
 		echo "$(tput sgr 0)"
 		sleep 2
 		cd $SCRIPT_PATH/lang
 		echo "$(tput setaf 3)"
-		./config.sh || exit 15
+		./config.sh || exit 31
 		echo "$(tput sgr 0)"
 		# Check if previous languages and firmware build exist and if so clean them up
 		if [ -f "lang_en.tmp" ]; then
@@ -465,43 +667,43 @@ do
 		fi
 		# build languages
 		echo "$(tput setaf 3)"
-		./lang-build.sh || exit 16
+		./lang-build.sh || exit 32
 		# Combine compiled firmware with languages 
-		./fw-build.sh || exit 17
+		./fw-build.sh || exit 33
 		echo "$(tput sgr 0)"
 		# Check if the motherboard is an EINSY and if so only one hex file will generated
 		MOTHERBOARD=$(grep --max-count=1 "\bMOTHERBOARD\b" $SCRIPT_PATH/Firmware/variants/$VARIANT.h | sed -e's/  */ /g' |cut -d ' ' -f3)
 		# If the motherboard is an EINSY just copy one hexfile
 		if [ "$MOTHERBOARD" = "BOARD_EINSY_1_0a" ]; then
-			echo "$(tput setaf 2)Copying multi language firmware for MK3/Einsy board to Hex-files folder$(tput sgr 0)"
+			echo "$(tput setaf 2)Copying multi language firmware for MK3/Einsy board to PF-build-hex folder$(tput sgr 0)"
 			cp -f firmware.hex $SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT.hex
 		else
-			echo "$(tput setaf 2)Zip multi language firmware for MK2.5/miniRAMbo board to Hex-files folder$(tput sgr 0)"
+			echo "$(tput setaf 2)Zip multi language firmware for MK2.5/miniRAMbo board to PF-build-hex folder$(tput sgr 0)"
 			cp -f firmware_cz.hex $SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT-cz.hex
 			cp -f firmware_de.hex $SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT-de.hex
 			cp -f firmware_es.hex $SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT-es.hex
 			cp -f firmware_fr.hex $SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT-fr.hex
 			cp -f firmware_it.hex $SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT-it.hex
 			cp -f firmware_pl.hex $SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT-pl.hex
-			if [ $OSTYPE == "msys" ]; then 
+			if [ $TARGET_OS == "windows" ]; then 
 				zip a $SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT.zip $SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT-??.hex
 				rm $SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT-??.hex
-			elif [ $OSTYPE == "linux-gnu" ]; then
+			elif [ $TARGET_OS == "linux" ]; then
 				zip -m -j ../../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT.zip ../../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT-??.hex
 			fi
 		fi
 		# Cleanup after build
 		echo "$(tput setaf 3)"
-		./fw-clean.sh || exit 18
-		./lang-clean.sh || exit 19
+		./fw-clean.sh || exit 34
+		./lang-clean.sh || exit 35
 		echo "$(tput sgr 0)"
 	else
-		echo "$(tput setaf 2)Copying English only firmware to Hex-files folder$(tput sgr 0)"
-		cp -f $BUILD_PATH/Firmware.ino.hex $SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT-EN_ONLY.hex || exit 20
+		echo "$(tput setaf 2)Copying English only firmware to PF-build-hex folder$(tput sgr 0)"
+		cp -f $BUILD_PATH/Firmware.ino.hex $SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT-EN_ONLY.hex || exit 34
 	fi
 
 	# Cleanup Firmware
-	rm $SCRIPT_PATH/Firmware/Configuration_prusa.h || exit 17
+	rm $SCRIPT_PATH/Firmware/Configuration_prusa.h || exit 36
 	sed -i -- "s/^#define FW_DEV_VERSION FW_VERSION_$DEV_STATUS/#define FW_DEV_VERSION FW_VERSION_UNKNOWN/g" $SCRIPT_PATH/Firmware/Configuration.h
 	sed -i -- 's/^#define FW_REPOSITORY "Prusa3d"/#define FW_REPOSITORY "Unknown"/g' $SCRIPT_PATH/Firmware/Configuration.h
 	echo $MULTI_LANGUAGE_CHECK
@@ -511,14 +713,6 @@ do
 	sleep 5
 done
 
-# Cleanup compiler flags are set to Prusa specific needs for the rambo board.
-#if [ $OSTYPE == "msys" ]; then
-#	echo " "
-#	echo "Restore Windows platform.txt"
-#	echo " "
-#	cp -f $BUILD_ENV_PATH/portable/packages/$RAMBO_PLATFORM_FILE.bck $BUILD_ENV_PATH/portable/packages/$RAMBO_PLATFORM_FILE
-#fi
-
 # Switch to hex path and list build files
 cd $SCRIPT_PATH
 cd ..

README.md

@@ -14,75 +14,73 @@
 
 # Build
 ## Linux
-Run shell script build.sh to build for MK3 and flash with Sli3er.  
-If you have different printel model, follow step [2.b](#2b) from Windows build first.  
-If you wish to flash from Arduino, follow step [2.c](#2c) from Windows build first.  
 
-The script downloads Arduino with our modifications and Rambo board support installed, unpacks it into folder PF-build-env-\<version\> on the same level, as your Prusa-Firmware folder is located, builds firmware for MK3 using that Arduino in Prusa-Firmware-build folder on the same level as Prusa-Firmware, runs secondary language support scripts. Firmware with secondary language support is generated in lang subfolder. Use firmware.hex for MK3 variant. Use firmware_\<lang\>.hex for other printers. Don't forget to follow step [2.b](#2b) first for non-MK3 printers.
+1. Clone this repository and checkout the correct branch for your desired release version.
+
+2. Set your printer model. 
+   - For MK3 --> skip to step 3. 
+   - If you have a different printer model, follow step [2.b](#2b) from Windows build
+   
+3. Run `sudo ./build.sh`
+   - Output hex file is at `"PrusaFirmware/lang/firmware.hex"` . In the same folder you can hex files for other languages as well.
+
+4. Connect your printer and flash with PrusaSlicer ( Configuration --> Flash printer firmware ) or Slic3r PE.
+   - If you wish to flash from Arduino, follow step [2.c](#2c) from Windows build first.
+
+
+_Notes:_
+
+The script downloads Arduino with our modifications and Rambo board support installed, unpacks it into folder `PF-build-env-\<version\>` on the same level, as your Prusa-Firmware folder is located, builds firmware for MK3 using that Arduino in Prusa-Firmware-build folder on the same level as Prusa-Firmware, runs secondary language support scripts. Firmware with secondary language support is generated in lang subfolder. Use firmware.hex for MK3 variant. Use `firmware_\<lang\>.hex` for other printers. Don't forget to follow step [2.b](#2b) first for non-MK3 printers.
+
 ## Windows
 ### Using Arduino
-note: Multi language build is not supported.
+_Note: Multi language build is not supported._
+
 #### 1. Development environment preparation
 
-   a. install `"Arduino Software IDE"` for your preferred operating system  
-`https://www.arduino.cc -> Software->Downloads`  
-it is recommended to use version `"1.8.5"`, as it is used on out build server to produce official builds.  
-_note: in the case of persistent compilation problems, check the version of the currently used C/C++ compiler (GCC) - should be `4.8.1`; version can be verified by entering the command  
-`avr-gcc --version`  
-if you are not sure where the file is placed (depends on how `"Arduino Software IDE"` was installed), you can use the search feature within the file system_  
-_note: name collision for `"LiquidCrystal"` library known from previous versions is now obsolete (so there is no need to delete or rename original file/-s)_
-
-   b. add (`UltiMachine`) `RAMBo` board into the list of Arduino target boards  
-`File->Preferences->Settings`  
-into text field `"Additional Boards Manager URLs"`  
-type location  
-`"https://raw.githubusercontent.com/ultimachine/ArduinoAddons/master/package_ultimachine_index.json"`  
-or you can 'manually' modify the item  
-`"boardsmanager.additional.urls=....."`  
-at the file `"preferences.txt"` (this parameter allows you to write a comma-separated list of addresses)  
-_note: you can find location of this file on your disk by following way:  
-`File->Preferences->Settings`  (`"More preferences can be edited in file ..."`)_  
-than do it  
-`Tools->Board->BoardsManager`  
-from viewed list select an item `"RAMBo"` (will probably be labeled as `"RepRap Arduino-compatible Mother Board (RAMBo) by UltiMachine"`  
-_note: select this item for any variant of board used in printers `'Prusa i3 MKx'`, that is for `RAMBo-mini x.y` and `EINSy x.y` to_  
-'clicking' the item will display the installation button; select choice `"1.0.1"` from the list(last known version as of the date of issue of this document)  
-_(after installation, the item is labeled as `"INSTALLED"` and can then be used for target board selection)_  
-
-   c. modify platform.txt to enable float printf support:  
-add "-Wl,-u,vfprintf -lprintf_flt -lm" to "compiler.c.elf.flags=" before existing flag "-Wl,--gc-sections"  
-example:  
-`"compiler.c.elf.flags=-w -Os -Wl,-u,vfprintf -lprintf_flt -lm -Wl,--gc-sections"`
-The file can be found in Arduino instalation directory, or after Arduino has been updated at:  
-"C:\Users\(user)\AppData\Local\Arduino15\packages\arduino\hardware\avr\(version)"
-If you can locate the file in both places, file from user profile is probably used.
+**a.** Install `"Arduino Software IDE"` from the official website `https://www.arduino.cc -> Software->Downloads` 
+   
+   _It is recommended to use version `"1.8.5"`, as it is used on out build server to produce official builds._
+
+**b.** Setup Arduino to use Prusa Rambo board definition
+
+* Open Arduino and navigate to File -> Preferences -> Settings
+* To the text field `"Additional Boards Manager URLSs"` add `https://raw.githubusercontent.com/prusa3d/Arduino_Boards/master/IDE_Board_Manager/package_prusa3d_index.json`
+* Open Board manager (`Tools->Board->Board manager`), and install `Prusa Research AVR MK3 RAMBo EINSy board`
+
+**c.** Modify compiler flags in `platform.txt` file
+     
+* The platform.txt file can be found in Arduino instalation directory, or after Arduino has been updated at: `"C:\Users\(user)\AppData\Local\Arduino15\packages\arduino\hardware\avr\(version)"` If you can locate the file in both places, file from user profile is probably used.
+       
+* Add `"-Wl,-u,vfprintf -lprintf_flt -lm"` to `"compiler.c.elf.flags="` before existing flag "-Wl,--gc-sections"  
+
+    For example:  `"compiler.c.elf.flags=-w -Os -Wl,-u,vfprintf -lprintf_flt -lm -Wl,--gc-sections"`
+   
+_Notes:_
+
+
+_In the case of persistent compilation problems, check the version of the currently used C/C++ compiler (GCC) - should be at leas `4.8.1`; 
+If you are not sure where the file is placed (depends on how `"Arduino Software IDE"` was installed), you can use the search feature within the file system_
+
+_Name collision for `"LiquidCrystal"` library known from previous versions is now obsolete (so there is no need to delete or rename original file/-s)_
 
 #### 2. Source code compilation
 
-a. place the source codes corresponding to your printer model obtained from the repository into the selected directory on your disk  
-`https://github.com/prusa3d/Prusa-Firmware/`  
+**a.** Clone this repository`https://github.com/prusa3d/Prusa-Firmware/` to your local drive.
 
-b.<a name="2b"></a> In the subdirectory `"Firmware/variants/"` select the configuration file (`.h`) corresponding to your printer model, make copy named `"Configuration_prusa.h"` (or make simple renaming) and copy it into `"Firmware/"` directory.  
+**b.**<a name="2b"></a> In the subdirectory `"Firmware/variants/"` select the configuration file (`.h`) corresponding to your printer model, make copy named `"Configuration_prusa.h"` (or make simple renaming) and copy it into `"Firmware/"` directory.  
 
-c.<a name="2c"></a> In file `"Firmware/config.h"` set LANG_MODE to 0.
+**c.**<a name="2c"></a> In file `"Firmware/config.h"` set LANG_MODE to 0.
 
-run `"Arduino IDE"`; select the file `"Firmware.ino"` from the subdirectory `"Firmware/"` at the location, where you placed the source codes  
-`File->Open`  
-make the desired code customizations; **all changes are on your own risk!**  
+**d.** Run `"Arduino IDE"`; select the file `"Firmware.ino"` from the subdirectory `"Firmware/"` at the location, where you placed the source code `File->Open` Make the desired code customizations; **all changes are on your own risk!**  
 
-select the target board `"RAMBo"`  
-`Tools->Board->RAMBo`  
-_note: it is not possible to use any of the variants `"Arduino Mega …"`, even though it is the same MCU_  
+**e.** Select the target board `"Tools->Board->PrusaResearch Einsy RAMBo"`  
 
-run the compilation  
-`Sketch->Verify/Compile`  
+**f.** Run the compilation `Sketch->Verify/Compile`  
 
-upload the result code into the connected printer  
-`Sketch->Upload`  
+**g.** Upload the result code into the connected printer `Sketch->Upload`  
 
-or you can also save the output code to the file (in so called `HEX`-format) `"Firmware.ino.rambo.hex"`:  
-`Sketch->ExportCompiledBinary`  
-and then upload it to the printer using the program `"FirmwareUpdater"`  
+* or you can also save the output code to the file (in so called `HEX`-format) `"Firmware.ino.rambo.hex"`:  `Sketch->ExportCompiledBinary` and then upload it to the printer using the program `"FirmwareUpdater"`  
 _note: this file is created in the directory `"Firmware/"`_  
 
 ### Using Linux subsystem under Windows 10 64-bit
@@ -139,14 +137,12 @@ _notes: Script and instructions contributed by 3d-gussner. Use at your own risk.
 
 # 3. Automated tests
 ## Prerequisites
-c++11 compiler e.g. g++ 6.3.1
-
-cmake
-
-build system - ninja or gnu make
+* c++11 compiler e.g. g++ 6.3.1
+* cmake
+* build system - ninja or gnu make
 
 ## Building
-Create folder where you want to build tests.
+Create a folder where you want to build tests.
 
 Example:
 

Tests/PrusaStatistics_test.cpp

@@ -0,0 +1,799 @@
+/**
+ * @file
+ * @author Marek Kuhn
+ */
+
+// For now the functions are just COPIED (lots of depencendies in ultralcd.h)
+
+#include "catch.hpp"
+#include <iostream>
+
+static bool VERBOSE_MODE = false;	// If true - output additional info to std:cout
+
+std::string itostr3(int i){
+	return std::to_string(i);
+}
+
+std::string eeprom_read_word(uint16_t* /*i*/){
+	return "eeprom_read";
+}
+
+int _millis(){return 10000;}
+
+static int farm_no;
+static int busy_state;
+static int PAUSED_FOR_USER;
+static int status_number;
+static int total_filament_used;
+static int feedmultiply;
+static int longFilenameOLD;
+static int starttime;
+static int isPrintPaused;
+static int IS_SD_PRINTING;
+static int farm_status;
+static int farm_timer;
+static int loading_flag;
+
+static int target_temperature[1];
+static int current_temperature[1];
+static int target_temperature_bed;
+static int current_temperature_bed;
+
+static uint16_t nozzle_diameter;
+static uint16_t* EEPROM_NOZZLE_DIAMETER_uM;
+
+static std::string FW_VERSION;
+
+struct Card {
+	int paused = 0;
+	int percentDone(){ return 50; }
+};
+
+static Card card;
+
+void setup_mockups(){
+	farm_no = 0;
+
+	busy_state = 0;
+	status_number = 0;
+	PAUSED_FOR_USER = 0;
+
+	total_filament_used = 0;
+	feedmultiply = 0;
+	longFilenameOLD = 0;
+	starttime = 0;
+
+	FW_VERSION = "3.8.0";
+
+	isPrintPaused = 0;
+	IS_SD_PRINTING = 0;
+	farm_status = 0;
+	farm_timer = 1;
+	loading_flag = 0;
+
+	target_temperature[0] = {215};
+	current_temperature[0] = {204};
+	target_temperature_bed = 60;
+	current_temperature_bed = 55;
+
+	nozzle_diameter = 400;
+	EEPROM_NOZZLE_DIAMETER_uM = &nozzle_diameter;
+
+}
+
+
+// Copy of pre 3.8 version set of functions
+namespace old_code
+{
+
+// Mocking Serial line
+static std::string SERIAL_BUFFER = "";
+
+void SERIAL_ECHO(std::string s){
+	SERIAL_BUFFER += s; 
+}
+
+void SERIAL_ECHO(int i){
+	SERIAL_BUFFER += std::to_string(i);
+}
+
+void SERIAL_ECHO(char c){
+	SERIAL_BUFFER += char(c);
+}
+
+void SERIAL_ECHOLN(std::string s){
+	SERIAL_BUFFER += s + "\n";
+}
+
+void SERIAL_ECHOLN(char c){
+	SERIAL_BUFFER += char(c);
+}
+
+void SERIAL_RESET(){
+	SERIAL_BUFFER.clear();
+}
+
+struct MySerial {
+	void print(int i){
+		SERIAL_ECHO(i);
+	}
+	void println(){
+		SERIAL_ECHO("\n");
+	}
+};
+
+static MySerial MYSERIAL;
+
+static void prusa_stat_printerstatus(int _status)
+{
+	SERIAL_ECHO("[PRN:");
+	SERIAL_ECHO(_status);
+	SERIAL_ECHO("]");
+}
+
+static void prusa_stat_farm_number() {
+	SERIAL_ECHO("[PFN:");
+	SERIAL_ECHO(farm_no);
+	SERIAL_ECHO("]");
+}
+
+static void prusa_stat_diameter() {
+	SERIAL_ECHO("[DIA:");
+	SERIAL_ECHO(eeprom_read_word((uint16_t*)EEPROM_NOZZLE_DIAMETER_uM));
+	SERIAL_ECHO("]");
+}
+
+static void prusa_stat_temperatures()
+{
+	SERIAL_ECHO("[ST0:");
+	SERIAL_ECHO(target_temperature[0]);
+	SERIAL_ECHO("][STB:");
+	SERIAL_ECHO(target_temperature_bed);
+	SERIAL_ECHO("][AT0:");
+	SERIAL_ECHO(current_temperature[0]);
+	SERIAL_ECHO("][ATB:");
+	SERIAL_ECHO(current_temperature_bed);
+	SERIAL_ECHO("]");
+}
+
+static void prusa_stat_printinfo()
+{
+	SERIAL_ECHO("[TFU:");
+	SERIAL_ECHO(total_filament_used);
+	SERIAL_ECHO("][PCD:");
+	SERIAL_ECHO(itostr3(card.percentDone()));
+	SERIAL_ECHO("][FEM:");
+	SERIAL_ECHO(itostr3(feedmultiply));
+	SERIAL_ECHO("][FNM:");
+	SERIAL_ECHO(longFilenameOLD);
+	SERIAL_ECHO("][TIM:");
+	if (starttime != 0)
+	{
+		SERIAL_ECHO(_millis() / 1000 - starttime / 1000);
+	}
+	else
+	{
+		SERIAL_ECHO(0);
+	}
+	SERIAL_ECHO("][FWR:");
+	SERIAL_ECHO(FW_VERSION);
+	SERIAL_ECHO("]");
+     prusa_stat_diameter();
+}
+
+void prusa_statistics(int _message, uint8_t _fil_nr) {
+#ifdef DEBUG_DISABLE_PRUSA_STATISTICS
+	return;
+#endif //DEBUG_DISABLE_PRUSA_STATISTICS
+	switch (_message)
+	{
+
+	case 0: // default message
+		if (busy_state == PAUSED_FOR_USER) 
+		{
+			SERIAL_ECHO("{");
+			prusa_stat_printerstatus(15);
+			prusa_stat_farm_number();
+			prusa_stat_printinfo();
+			SERIAL_ECHOLN("}");
+			status_number = 15;
+		}
+		else if (isPrintPaused || card.paused) 
+		{
+			SERIAL_ECHO("{");
+			prusa_stat_printerstatus(14);
+			prusa_stat_farm_number();
+			prusa_stat_printinfo();
+			SERIAL_ECHOLN("}");
+			status_number = 14;
+		}
+		else if (IS_SD_PRINTING || loading_flag)
+		{
+			SERIAL_ECHO("{");
+			prusa_stat_printerstatus(4);
+			prusa_stat_farm_number();
+			prusa_stat_printinfo();
+			SERIAL_ECHOLN("}");
+			status_number = 4;
+		}
+		else
+		{
+			SERIAL_ECHO("{");
+			prusa_stat_printerstatus(1);
+			prusa_stat_farm_number();
+			prusa_stat_diameter();
+			SERIAL_ECHOLN("}");
+			status_number = 1;
+		}
+		break;
+
+	case 1:		// 1 heating
+		farm_status = 2;
+		SERIAL_ECHO("{");
+		prusa_stat_printerstatus(2);
+		prusa_stat_farm_number();
+		SERIAL_ECHOLN("}");
+		status_number = 2;
+		farm_timer = 1;
+		break;
+
+	case 2:		// heating done
+		farm_status = 3;
+		SERIAL_ECHO("{");
+		prusa_stat_printerstatus(3);
+		prusa_stat_farm_number();
+		SERIAL_ECHOLN("}");
+		status_number = 3;
+		farm_timer = 1;
+
+		if (IS_SD_PRINTING || loading_flag)
+		{
+			farm_status = 4;
+			SERIAL_ECHO("{");
+			prusa_stat_printerstatus(4);
+			prusa_stat_farm_number();
+			SERIAL_ECHOLN("}");
+			status_number = 4;
+		}
+		else
+		{
+			SERIAL_ECHO("{");
+			prusa_stat_printerstatus(3);
+			prusa_stat_farm_number();
+			SERIAL_ECHOLN("}");
+			status_number = 3;
+		}
+		farm_timer = 1;
+		break;
+
+	case 3:		// filament change
+
+		break;
+	case 4:		// print succesfull
+		SERIAL_ECHO("{[RES:1][FIL:");
+		MYSERIAL.print(int(_fil_nr));
+		SERIAL_ECHO("]");
+		prusa_stat_printerstatus(status_number);
+		prusa_stat_farm_number();
+		SERIAL_ECHOLN("}");
+		farm_timer = 2;
+		break;
+	case 5:		// print not succesfull
+		SERIAL_ECHO("{[RES:0][FIL:");
+		MYSERIAL.print(int(_fil_nr));
+		SERIAL_ECHO("]");
+		prusa_stat_printerstatus(status_number);
+		prusa_stat_farm_number();
+		SERIAL_ECHOLN("}");
+		farm_timer = 2;
+		break;
+	case 6:		// print done
+		SERIAL_ECHO("{[PRN:8]");
+		prusa_stat_farm_number();
+		SERIAL_ECHOLN("}");
+		status_number = 8;
+		farm_timer = 2;
+		break;
+	case 7:		// print done - stopped
+		SERIAL_ECHO("{[PRN:9]");
+		prusa_stat_farm_number();
+		SERIAL_ECHOLN("}");
+		status_number = 9;
+		farm_timer = 2;
+		break;
+	case 8:		// printer started
+		SERIAL_ECHO("{[PRN:0][PFN:");
+		status_number = 0;
+		SERIAL_ECHO(farm_no);
+		SERIAL_ECHOLN("]}");
+		farm_timer = 2;
+		break;
+	case 20:		// echo farm no
+		SERIAL_ECHO("{");
+		prusa_stat_printerstatus(status_number);
+		prusa_stat_farm_number();
+		SERIAL_ECHOLN("}");
+		farm_timer = 4;
+		break;
+	case 21: // temperatures
+		SERIAL_ECHO("{");
+		prusa_stat_temperatures();
+		prusa_stat_farm_number();
+		prusa_stat_printerstatus(status_number);
+		SERIAL_ECHOLN("}");
+		break;
+    case 22: // waiting for filament change
+        SERIAL_ECHO("{[PRN:5]");
+		prusa_stat_farm_number();
+		SERIAL_ECHOLN("}");
+		status_number = 5;
+        break;
+	
+	case 90: // Error - Thermal Runaway
+		SERIAL_ECHO("{[ERR:1]");
+		prusa_stat_farm_number();
+		SERIAL_ECHOLN("}");
+		break;
+	case 91: // Error - Thermal Runaway Preheat
+		SERIAL_ECHO("{[ERR:2]");
+		prusa_stat_farm_number();
+		SERIAL_ECHOLN("}");
+		break;
+	case 92: // Error - Min temp
+		SERIAL_ECHO("{[ERR:3]");
+		prusa_stat_farm_number();
+		SERIAL_ECHOLN("}");
+		break;
+	case 93: // Error - Max temp
+		SERIAL_ECHO("{[ERR:4]");
+		prusa_stat_farm_number();
+		SERIAL_ECHOLN("}");
+		break;
+
+    case 99:		// heartbeat
+        SERIAL_ECHO("{[PRN:99]");
+        prusa_stat_temperatures();
+		SERIAL_ECHO("[PFN:");
+		SERIAL_ECHO(farm_no);
+		SERIAL_ECHO("]");
+        SERIAL_ECHOLN("}");
+            
+        break;
+	}
+
+}
+}
+
+// Copy of 3.8 version of functions
+namespace new_code
+{
+
+// Mocking Serial line
+static std::string SERIAL_BUFFER = "";
+
+void SERIAL_ECHO(std::string s){
+	SERIAL_BUFFER += s; 
+}
+
+void SERIAL_ECHO(int i){
+	SERIAL_BUFFER += std::to_string(i);
+}
+
+void SERIAL_ECHO(char c){
+	SERIAL_BUFFER += char(c);
+}
+
+void SERIAL_ECHOLN(std::string s){
+	SERIAL_BUFFER += s + "\n";
+}
+
+void SERIAL_ECHOLN(char c){
+	SERIAL_BUFFER += char(c);
+	SERIAL_BUFFER += "\n";
+}
+
+void SERIAL_RESET(){
+	SERIAL_BUFFER.clear();
+}
+
+struct MySerial {
+	void print(int i){
+		SERIAL_ECHO(i);
+	}
+	void println(){
+		SERIAL_ECHO("\n");
+	}
+};
+
+static MySerial MYSERIAL;
+
+static void prusa_stat_printerstatus(int _status)
+{
+	SERIAL_ECHO("[PRN:");
+	SERIAL_ECHO(_status);
+	SERIAL_ECHO(']');
+}
+
+static void prusa_stat_farm_number() {
+	SERIAL_ECHO("[PFN:");
+	SERIAL_ECHO(farm_no);
+	SERIAL_ECHO(']');
+}
+
+static void prusa_stat_diameter() {
+	SERIAL_ECHO("[DIA:");
+	SERIAL_ECHO(eeprom_read_word((uint16_t*)EEPROM_NOZZLE_DIAMETER_uM));
+	SERIAL_ECHO(']');
+}
+
+static void prusa_stat_temperatures()
+{
+	SERIAL_ECHO("[ST0:");
+	SERIAL_ECHO(target_temperature[0]);
+	SERIAL_ECHO("][STB:");
+	SERIAL_ECHO(target_temperature_bed);
+	SERIAL_ECHO("][AT0:");
+	SERIAL_ECHO(current_temperature[0]);
+	SERIAL_ECHO("][ATB:");
+	SERIAL_ECHO(current_temperature_bed);
+	SERIAL_ECHO(']');
+}
+
+static void prusa_stat_printinfo()
+{
+	SERIAL_ECHO("[TFU:");
+	SERIAL_ECHO(total_filament_used);
+	SERIAL_ECHO("][PCD:");
+	SERIAL_ECHO(itostr3(card.percentDone()));
+	SERIAL_ECHO("][FEM:");
+	SERIAL_ECHO(itostr3(feedmultiply));
+	SERIAL_ECHO("][FNM:");
+	SERIAL_ECHO(longFilenameOLD);
+	SERIAL_ECHO("][TIM:");
+	if (starttime != 0)
+	{
+		SERIAL_ECHO(_millis() / 1000 - starttime / 1000);
+	}
+	else
+	{
+		SERIAL_ECHO(0);
+	}
+	SERIAL_ECHO("][FWR:");
+	SERIAL_ECHO(FW_VERSION);
+	SERIAL_ECHO(']');
+    prusa_stat_diameter();
+}
+
+void prusa_statistics_err(char c){
+	SERIAL_ECHO("{[ERR:");
+	SERIAL_ECHO(c);
+	SERIAL_ECHO(']');
+	prusa_stat_farm_number();
+}
+
+void prusa_statistics_case0(uint8_t statnr){
+	SERIAL_ECHO("{");
+	prusa_stat_printerstatus(statnr);
+	prusa_stat_farm_number();
+	prusa_stat_printinfo();
+}
+
+void prusa_statistics(int _message, uint8_t _fil_nr) {
+#ifdef DEBUG_DISABLE_PRUSA_STATISTICS
+	return;
+#endif //DEBUG_DISABLE_PRUSA_STATISTICS
+	switch (_message)
+	{
+
+	case 0: // default message
+		if (busy_state == PAUSED_FOR_USER) 
+		{   
+			prusa_statistics_case0(15);
+		}
+		else if (isPrintPaused || card.paused) 
+		{
+			prusa_statistics_case0(14);
+		}
+		else if (IS_SD_PRINTING || loading_flag)
+		{
+			prusa_statistics_case0(4);
+		}
+		else
+		{
+			SERIAL_ECHO("{");
+			prusa_stat_printerstatus(1);
+			prusa_stat_farm_number();
+			prusa_stat_diameter();
+			status_number = 1;
+		}
+		break;
+
+	case 1:		// 1 heating
+		farm_status = 2;
+		SERIAL_ECHO('{');
+		prusa_stat_printerstatus(2);
+		prusa_stat_farm_number();
+		status_number = 2;
+		farm_timer = 1;
+		break;
+
+	case 2:		// heating done
+		farm_status = 3;
+		SERIAL_ECHO('{');
+		prusa_stat_printerstatus(3);
+		prusa_stat_farm_number();
+		SERIAL_ECHOLN('}');
+		status_number = 3;
+		farm_timer = 1;
+
+		if (IS_SD_PRINTING || loading_flag)
+		{
+			farm_status = 4;
+			SERIAL_ECHO('{');
+			prusa_stat_printerstatus(4);
+			prusa_stat_farm_number();
+			status_number = 4;
+		}
+		else
+		{
+			SERIAL_ECHO('{');
+			prusa_stat_printerstatus(3);
+			prusa_stat_farm_number();
+			status_number = 3;
+		}
+		farm_timer = 1;
+		break;
+
+	case 3:		// filament change
+		// must do a return here to prevent doing SERIAL_ECHOLN("}") at the very end of this function
+		// saved a considerable amount of FLASH
+		return;
+	case 4:		// print succesfull
+		SERIAL_ECHO("{[RES:1][FIL:");
+		MYSERIAL.print(int(_fil_nr));
+		SERIAL_ECHO(']');
+		prusa_stat_printerstatus(status_number);
+		prusa_stat_farm_number();
+		farm_timer = 2;
+		break;
+	case 5:		// print not succesfull
+		SERIAL_ECHO("{[RES:0][FIL:");
+		MYSERIAL.print(int(_fil_nr));
+		SERIAL_ECHO(']');
+		prusa_stat_printerstatus(status_number);
+		prusa_stat_farm_number();
+		farm_timer = 2;
+		break;
+	case 6:		// print done
+		SERIAL_ECHO("{[PRN:8]");
+		prusa_stat_farm_number();
+		status_number = 8;
+		farm_timer = 2;
+		break;
+	case 7:		// print done - stopped
+		SERIAL_ECHO("{[PRN:9]");
+		prusa_stat_farm_number();
+		status_number = 9;
+		farm_timer = 2;
+		break;
+	case 8:		// printer started
+		SERIAL_ECHO("{[PRN:0][PFN:");
+		status_number = 0;
+		SERIAL_ECHO(farm_no);
+		SERIAL_ECHO(']');
+		farm_timer = 2;
+		break;
+	case 20:		// echo farm no
+		SERIAL_ECHO('{');
+		prusa_stat_printerstatus(status_number);
+		prusa_stat_farm_number();
+		farm_timer = 4;
+		break;
+	case 21: // temperatures
+		SERIAL_ECHO('{');
+		prusa_stat_temperatures();
+		prusa_stat_farm_number();
+		prusa_stat_printerstatus(status_number);
+		break;
+    case 22: // waiting for filament change
+        SERIAL_ECHO("{[PRN:5]");
+		prusa_stat_farm_number();
+		status_number = 5;
+        break;
+	
+	case 90: // Error - Thermal Runaway
+		prusa_statistics_err('1');
+		break;
+	case 91: // Error - Thermal Runaway Preheat
+		prusa_statistics_err('2');
+		break;
+	case 92: // Error - Min temp
+		prusa_statistics_err('3');
+		break;
+	case 93: // Error - Max temp
+		prusa_statistics_err('4');
+		break;
+
+    case 99:		// heartbeat
+        SERIAL_ECHO("{[PRN:99]");
+        prusa_stat_temperatures();
+		SERIAL_ECHO("[PFN:");
+		SERIAL_ECHO(farm_no);
+		SERIAL_ECHO(']');
+            
+        break;
+	}
+	SERIAL_ECHOLN('}');	
+
+}
+
+} // end namespace new
+
+void SERIALS_RESET(){
+	old_code::SERIAL_RESET();
+	new_code::SERIAL_RESET();
+}
+
+std::string SERIALS_SERIALIZE(){
+	return old_code::SERIAL_BUFFER + "\n" + new_code::SERIAL_BUFFER;
+}
+void SERIALS_PRINT(){
+	std::cout << "[Printing buffers...] \n";
+	std::cout << old_code::SERIAL_BUFFER << "\n";
+	std::cout << new_code::SERIAL_BUFFER << "\n";
+}
+
+int SERIALS_COMPARE(){
+	// Trim the newline at the end
+
+	if(old_code::SERIAL_BUFFER.back() == '\n'){
+		old_code::SERIAL_BUFFER.pop_back();
+	}
+	if(new_code::SERIAL_BUFFER.back() == '\n'){
+		new_code::SERIAL_BUFFER.pop_back();
+	}
+
+	if(VERBOSE_MODE){
+		std::cout << "Comparing: \n";
+		std::cout << old_code::SERIAL_BUFFER << "\n";
+		std::cout << new_code::SERIAL_BUFFER << "\n";	
+	}
+	
+	return old_code::SERIAL_BUFFER.compare(new_code::SERIAL_BUFFER);
+}
+
+
+// ---------------  TEST CASES ---------------- // 
+
+TEST_CASE("Serials compare ignore newline at the end", "[helper]")
+{
+	SERIALS_RESET();
+	old_code::SERIAL_BUFFER = "Hello compare me.";
+	new_code::SERIAL_BUFFER = "Hello compare me.";
+	CHECK(SERIALS_COMPARE() == 0);
+
+	SERIALS_RESET();
+	old_code::SERIAL_BUFFER = "Hello compare me.\n";
+	new_code::SERIAL_BUFFER = "Hello compare me.";
+	CHECK(SERIALS_COMPARE() == 0);
+
+	SERIALS_RESET();
+	old_code::SERIAL_BUFFER = "Hello compare me.";
+	new_code::SERIAL_BUFFER = "Hello compare me.\n";
+	CHECK(SERIALS_COMPARE() == 0);
+}
+
+TEST_CASE("Printer status is shown", "[prusa_stats]")
+{
+	SERIALS_RESET();
+	setup_mockups();
+
+	old_code::prusa_stat_printerstatus(1);
+	new_code::prusa_stat_printerstatus(1);
+
+	INFO(SERIALS_SERIALIZE());
+	CHECK(SERIALS_COMPARE() == 0);
+}
+
+
+TEST_CASE("Printer info is shown", "[prusa_stats]")
+{
+	SERIALS_RESET();
+	setup_mockups();
+
+	old_code::prusa_stat_printinfo();
+	new_code::prusa_stat_printinfo();
+
+	INFO(SERIALS_SERIALIZE());
+	CHECK(SERIALS_COMPARE() == 0);
+}
+
+TEST_CASE("Printer temperatures are shown", "[prusa_stats]")
+{
+	SERIALS_RESET();
+	setup_mockups();
+
+	old_code::prusa_stat_temperatures();
+	new_code::prusa_stat_temperatures();
+	
+	INFO(SERIALS_SERIALIZE());
+	CHECK(SERIALS_COMPARE() == 0);
+}
+
+TEST_CASE("Prusa_statistics test", "[prusa_stats]")
+{
+	SERIALS_RESET();
+	setup_mockups();
+
+	int test_codes[] = {0,1,2,3,4,5,6,7,8,20,21,22,90,91,92,93,99};
+	int size = sizeof(test_codes)/sizeof(test_codes[0]);
+
+	for(int i = 0; i < size; i++){
+
+		if(VERBOSE_MODE){
+			std::cout << "Testing prusa_statistics(" << std::to_string(i) << ")\n";	
+		}
+		
+		switch(i)
+		{
+			case 0: {
+				busy_state = 0;
+				PAUSED_FOR_USER = 0;
+				old_code::prusa_statistics(test_codes[i],0);
+				new_code::prusa_statistics(test_codes[i],0);
+				CHECK(SERIALS_COMPARE() == 0);
+				SERIALS_RESET();
+
+				busy_state = 1;
+				PAUSED_FOR_USER = 0;
+				isPrintPaused = 1;
+				old_code::prusa_statistics(test_codes[i],0);
+				new_code::prusa_statistics(test_codes[i],0);	
+				CHECK(SERIALS_COMPARE() == 0);
+				SERIALS_RESET();
+
+				isPrintPaused = 0;
+				card.paused = 0;
+				IS_SD_PRINTING = 1;
+				old_code::prusa_statistics(test_codes[i],0);
+				new_code::prusa_statistics(test_codes[i],0);
+				CHECK(SERIALS_COMPARE() == 0);
+				SERIALS_RESET();	
+
+				busy_state = 1;
+				PAUSED_FOR_USER = 0;	
+				isPrintPaused = 0;			
+				IS_SD_PRINTING = 0;
+				loading_flag = 0;
+				old_code::prusa_statistics(test_codes[i],0);
+				new_code::prusa_statistics(test_codes[i],0);
+				CHECK(SERIALS_COMPARE() == 0);
+				SERIALS_RESET();	
+				break;
+			}
+			case 2: {
+				IS_SD_PRINTING = 1;
+				old_code::prusa_statistics(test_codes[i],0);
+				new_code::prusa_statistics(test_codes[i],0);	
+				CHECK(SERIALS_COMPARE() == 0);
+				SERIALS_RESET();	
+
+				IS_SD_PRINTING = 0;
+				loading_flag = 0;
+				old_code::prusa_statistics(test_codes[i],0);
+				new_code::prusa_statistics(test_codes[i],0);	
+				CHECK(SERIALS_COMPARE() == 0);
+				SERIALS_RESET();					
+
+				break;
+			}
+			default:{
+
+				old_code::prusa_statistics(test_codes[i],0);
+				new_code::prusa_statistics(test_codes[i],0);
+				CHECK(SERIALS_COMPARE() == 0);
+				SERIALS_RESET();
+			}
+		}
+	}
+}

build.sh

@@ -1,5 +1,5 @@
 #!/bin/bash 
-BUILD_ENV="1.0.2"
+BUILD_ENV="1.0.6"
 SCRIPT_PATH="$( cd "$(dirname "$0")" ; pwd -P )"
 
 if [ ! -d "build-env" ]; then
@@ -31,7 +31,7 @@ if [ ! -f "$SCRIPT_PATH/Firmware/Configuration_prusa.h" ]; then
     cp $SCRIPT_PATH/Firmware/variants/1_75mm_MK3-EINSy10a-E3Dv6full.h $SCRIPT_PATH/Firmware/Configuration_prusa.h || exit 8
 fi
 
-$BUILD_ENV_PATH/arduino $SCRIPT_PATH/Firmware/Firmware.ino --verify --board rambo:avr:rambo --pref build.path=$BUILD_PATH --pref compiler.warning_level=all || exit 9
+$BUILD_ENV_PATH/arduino $SCRIPT_PATH/Firmware/Firmware.ino --verify --board PrusaResearchRambo:avr:rambo --pref build.path=$BUILD_PATH --pref compiler.warning_level=all || exit 9
 
 export ARDUINO=$BUILD_ENV_PATH
 

lang/fw-build.sh

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 #
 # postbuild.sh - multi-language support script
 #  Generate binary with secondary language.

lang/fw-clean.sh

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 #
 # fw-clean.sh - multi-language support script
 #  Remove all firmware output files from lang folder.

lang/lang-add.sh

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 #
 # lang-add.sh - multi-language support script
 #  add new texts from list (lang_add.txt) to all dictionary files

lang/lang-build.sh

@@ -82,7 +82,7 @@ generate_binary()
  rm -f lang_$1.dat
  LNG=$1
  #check lang dictionary
- /usr/bin/env python lang-check.py $1
+ /usr/bin/env python lang-check.py $1 --no-warning
  #create lang_xx.tmp - different processing for 'en' language
  if [ "$1" = "en" ]; then
   #remove comments and empty lines

lang/lang-check.py

@@ -38,7 +38,7 @@ def parse_txt(lang, no_warning):
             if rows is None:
                 rows = 1
 
-            if len(translation) > cols*rows:
+            if len(translation)-2 > cols*rows:
                 stderr.write(
                     "[E]: Text %s is longer then definiton on line %d\n" %
                     (translation, lines))
@@ -56,7 +56,7 @@ def main():
         usage="$(prog)s lang")
     parser.add_argument(
         "lang", nargs='?', default="en", type=str,
-        help="Check lang file (en|cs|de|es|fr|it)")
+        help="Check lang file (en|cs|de|es|fr|it|pl)")
     parser.add_argument(
         "--no-warning", action="store_true",
         help="Disable warnings")

lang/lang-check.sh

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 #
 # lang_check.sh - multi-language support script
 #  check lang_xx.bin (language binary file)

lang/lang_en.txt

@@ -8,10 +8,10 @@
 "[0;0] point offset"
 
 #MSG_CRASH_DET_ONLY_IN_NORMAL c=20 r=4
-"\x1b[2JCrash detection can\x1b[1;0Hbe turned on only in\x1b[2;0HNormal mode"
+"Crash detection can\x0abe turned on only in\x0aNormal mode"
 
 #MSG_CRASH_DET_STEALTH_FORCE_OFF c=20 r=4
-"\x1b[2JWARNING:\x1b[1;0HCrash detection\x1b[2;0Hdisabled in\x1b[3;0HStealth mode"
+"WARNING:\x0aCrash detection\x0adisabled in\x0aStealth mode"
 
 #
 ">Cancel"

lang/lang_en_cz.txt

@@ -11,12 +11,12 @@
 "[0;0] odsazeni bodu"
 
 #MSG_CRASH_DET_ONLY_IN_NORMAL c=20 r=4
-"\x1b[2JCrash detection can\x1b[1;0Hbe turned on only in\x1b[2;0HNormal mode"
-"\x1b[2JCrash detekce muze\x1b[1;0Hbyt zapnuta pouze v\x1b[2;0HNormal modu"
+"Crash detection can\x0abe turned on only in\x0aNormal mode"
+"Crash detekce muze\x0abyt zapnuta pouze v\x0aNormal modu"
 
 #MSG_CRASH_DET_STEALTH_FORCE_OFF c=20 r=4
-"\x1b[2JWARNING:\x1b[1;0HCrash detection\x1b[2;0Hdisabled in\x1b[3;0HStealth mode"
-"\x1b[2JPOZOR:\x1b[1;0HCrash detekce\x1b[2;0Hdeaktivovana ve\x1b[3;0HStealth modu"
+"WARNING:\x0aCrash detection\x0adisabled in\x0aStealth mode"
+"POZOR:\x0aCrash detekce\x0adeaktivovana ve\x0aStealth modu"
 
 #
 ">Cancel"
@@ -828,7 +828,7 @@
 
 #
 "Press the knob"
-"Stisknete hl. tlacitko"
+"Stisknete tlacitko"
 
 #MSG_PRINT_PAUSED c=20 r=1
 "Print paused"

lang/lang_en_de.txt

@@ -11,12 +11,12 @@
 "[0;0] Punktversatz"
 
 #MSG_CRASH_DET_ONLY_IN_NORMAL c=20 r=4
-"\x1b[2JCrash detection can\x1b[1;0Hbe turned on only in\x1b[2;0HNormal mode"
-"\x1b[2JCrash Erkennung kann\x1b[1;0Hnur im Modus Normal\x1b[2;0Hgenutzt werden"
+"Crash detection can\x0abe turned on only in\x0aNormal mode"
+"Crash Erkennung kann\x0anur im Modus Normal\x0agenutzt werden"
 
 #MSG_CRASH_DET_STEALTH_FORCE_OFF c=20 r=4
-"\x1b[2JWARNING:\x1b[1;0HCrash detection\x1b[2;0Hdisabled in\x1b[3;0HStealth mode"
-"\x1b[2JWARNUNG:\x1b[1;0HCrash Erkennung\x1b[2;0Hdeaktiviert im\x1b[3;0HStealth Modus"
+"WARNING:\x0aCrash detection\x0adisabled in\x0aStealth mode"
+"WARNUNG:\x0aCrash Erkennung\x0adeaktiviert im\x0aStealth Modus"
 
 #
 ">Cancel"
@@ -936,7 +936,7 @@
 
 #MSG_SELFTEST_FAILED c=20
 "Selftest failed  "
-"Selbsttest misslung  "
+"Selbsttest misslang  "
 
 #MSG_FORCE_SELFTEST c=20 r=8
 "Selftest will be run to calibrate accurate sensorless rehoming."

lang/lang_en_es.txt

@@ -11,12 +11,12 @@
 "[0;0] punto offset"
 
 #MSG_CRASH_DET_ONLY_IN_NORMAL c=20 r=4
-"\x1b[2JCrash detection can\x1b[1;0Hbe turned on only in\x1b[2;0HNormal mode"
-"\x1b[2JDec. choque\x1b[1;0Hpuede ser activada solo en\x1b[2;0HModo normal"
+"Crash detection can\x0abe turned on only in\x0aNormal mode"
+"Dec. choque puede\x0aser activada solo en\x0aModo normal"
 
 #MSG_CRASH_DET_STEALTH_FORCE_OFF c=20 r=4
-"\x1b[2JWARNING:\x1b[1;0HCrash detection\x1b[2;0Hdisabled in\x1b[3;0HStealth mode"
-"\x1b[2JATENCION:\x1b[1;0HDec. choque\x1b[2;0Hdesactivada en\x1b[3;0HModo silencio"
+"WARNING:\x0aCrash detection\x0adisabled in\x0aStealth mode"
+"ATENCION:\x0aDec. choque\x0adesactivada en\x0aModo silencio"
 
 #
 ">Cancel"

lang/lang_en_fr.txt

@@ -11,12 +11,12 @@
 "Offset point [0;0]"
 
 #MSG_CRASH_DET_ONLY_IN_NORMAL c=20 r=4
-"\x1b[2JCrash detection can\x1b[1;0Hbe turned on only in\x1b[2;0HNormal mode"
-"\x1b[2JLa detection de crash peut etre\x1b[1;0Hactive seulement\x1b[2;0Hen mode Normal"
+"Crash detection can\x0abe turned on only in\x0aNormal mode"
+"La detection de\x0acrash peut etre\x0aactive seulement en\x0amode Normal"
 
 #MSG_CRASH_DET_STEALTH_FORCE_OFF c=20 r=4
-"\x1b[2JWARNING:\x1b[1;0HCrash detection\x1b[2;0Hdisabled in\x1b[3;0HStealth mode"
-"\x1b[2JATTENTION :\x1b[1;0HDetection de crash\x1b[2;0H desactivee en\x1b[3;0Hmode Furtif"
+"WARNING:\x0aCrash detection\x0adisabled in\x0aStealth mode"
+"ATTENTION:\x0aDetection de crash\x0adesactivee en\x0amode Furtif"
 
 #
 ">Cancel"

lang/lang_en_it.txt

@@ -11,12 +11,12 @@
 "[0;0] punto offset"
 
 #MSG_CRASH_DET_ONLY_IN_NORMAL c=20 r=4
-"\x1b[2JCrash detection can\x1b[1;0Hbe turned on only in\x1b[2;0HNormal mode"
-"\x1b[2JRilev. impatto\x1b[1;0Hattivabile solo\x1b[2;0Hin Modalita normale"
+"Crash detection can\x0abe turned on only in\x0aNormal mode"
+"Rilev. impatto\x0aattivabile solo\x0ain Modalita normale"
 
 #MSG_CRASH_DET_STEALTH_FORCE_OFF c=20 r=4
-"\x1b[2JWARNING:\x1b[1;0HCrash detection\x1b[2;0Hdisabled in\x1b[3;0HStealth mode"
-"\x1b[2JATTENZIONE:\x1b[1;0HRilev. impatto\x1b[2;0Hdisattivato in\x1b[3;0HModalita silenziosa"
+"WARNING:\x0aCrash detection disabled in Stealth mode"
+"ATTENZIONE:\x0aRilev. impatto\x0adisattivato in\x0aModalita silenziosa"
 
 #
 ">Cancel"

lang/lang_en_pl.txt

@@ -11,12 +11,12 @@
 "[0;0] przesuniecie punktu"
 
 #MSG_CRASH_DET_ONLY_IN_NORMAL c=20 r=4
-"\x1b[2JCrash detection can\x1b[1;0Hbe turned on only in\x1b[2;0HNormal mode"
-"\x1b[2JWykrywanie zderzen moze\x1b[1;0Hbyc wlaczone tylko w\x1b[2;0Htrybie Normalnym"
+"Crash detection can\x0abe turned on only in\x0aNormal mode"
+"Wykrywanie zderzen\x0amoze byc wlaczone\x0atylko w\x0atrybie Normalnym"
 
 #MSG_CRASH_DET_STEALTH_FORCE_OFF c=20 r=4
-"\x1b[2JWARNING:\x1b[1;0HCrash detection\x1b[2;0Hdisabled in\x1b[3;0HStealth mode"
-"\x1b[2JUWAGA:\x1b[1;0HWykrywanie zderzen\x1b[2;0Hwylaczone w\x1b[3;0Htrybie Stealth"
+"WARNING:\x0aCrash detection\x0adisabled in\x0aStealth mode"
+"UWAGA:\x0aWykrywanie zderzen\x0awylaczone w\x0atrybie Stealth"
 
 #
 ">Cancel"

lang/progmem.sh

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 #
 # progmem.sh - multi-language support script
 #  Examine content of progmem sections (default is progmem1).
@@ -104,6 +104,7 @@ cat $PROGMEM.chr | \
  sed 's/\\x1b/\\\\\\x1b/g;' | \
  sed 's/\\x01/\\\\\\x01/g;' | \
  sed 's/\\xf8/\\\\\\xf8/g;' | \
+ sed 's/\\x0a/\\\\\\x0a/g;' | \
  sed 's/\\x00$/\n/;s/^/\"/;s/$/\"\\/'; \
 ) | sh > $PROGMEM.var