EEPROM_BABYSTEP_Z using removal

Firmware/Marlin_main.cpp

@@ -1527,7 +1527,7 @@ void setup()
 		  calibration_status() == CALIBRATION_STATUS_UNKNOWN || 
 		  calibration_status() == CALIBRATION_STATUS_XYZ_CALIBRATION) {
 		  // Reset the babystepping values, so the printer will not move the Z axis up when the babystepping is enabled.
-		  eeprom_update_word((uint16_t*)EEPROM_BABYSTEP_Z, 0);
+            eeprom_update_word(reinterpret_cast<uint16_t *>(&(EEPROM_Sheets_base->s[(eeprom_read_byte(&(EEPROM_Sheets_base->active_sheet)))].z_offset)),0);
 		  // Show the message.
 		  lcd_show_fullscreen_message_and_wait_P(_T(MSG_FOLLOW_CALIBRATION_FLOW));
 	  }
@@ -2694,6 +2694,7 @@ static void gcode_G28(bool home_x_axis, long home_x_value, bool home_y_axis, lon
       previous_millis_cmd = _millis();
       endstops_hit_on_purpose();
 #ifndef MESH_BED_LEVELING
+//-// Oct 2019 :: this part of code is (from) now probably un-compilable
       // If MESH_BED_LEVELING is not active, then it is the original Prusa i3.
       // Offer the user to load the baby step value, which has been adjusted at the previous print session.
       if(card.sdprinting && eeprom_read_word((uint16_t *)EEPROM_BABYSTEP_Z))
@@ -2886,7 +2887,7 @@ bool gcode_M45(bool onlyZ, int8_t verbosity_level)
 			{
 				// Reset the baby step value and the baby step applied flag.
 				calibration_status_store(CALIBRATION_STATUS_XYZ_CALIBRATION);
-				eeprom_update_word((uint16_t*)EEPROM_BABYSTEP_Z, 0);
+                    eeprom_update_word(reinterpret_cast<uint16_t *>(&(EEPROM_Sheets_base->s[(eeprom_read_byte(&(EEPROM_Sheets_base->active_sheet)))].z_offset)),0);
 				// Complete XYZ calibration.
 				uint8_t point_too_far_mask = 0;
 				BedSkewOffsetDetectionResultType result = find_bed_offset_and_skew(verbosity_level, point_too_far_mask);
@@ -3736,7 +3737,7 @@ void process_commands()
 	  lang_reset();
 
 	} else if(code_seen("Lz")) { // PRUSA Lz
-      EEPROM_save_B(EEPROM_BABYSTEP_Z,0);
+      eeprom_update_word(reinterpret_cast<uint16_t *>(&(EEPROM_Sheets_base->s[(eeprom_read_byte(&(EEPROM_Sheets_base->active_sheet)))].z_offset)),0);
 
 	} else if(code_seen("Beat")) { // PRUSA Beat
         // Kick farm link timer
@@ -5507,7 +5508,7 @@ if(eSoundMode!=e_SOUND_MODE_SILENT)
 
 		// Reset the baby step value and the baby step applied flag.
 		calibration_status_store(CALIBRATION_STATUS_ASSEMBLED);
-		eeprom_update_word((uint16_t*)EEPROM_BABYSTEP_Z, 0);
+          eeprom_update_word(reinterpret_cast<uint16_t *>(&(EEPROM_Sheets_base->s[(eeprom_read_byte(&(EEPROM_Sheets_base->active_sheet)))].z_offset)),0);
 
         // Reset the skew and offset in both RAM and EEPROM.
         reset_bed_offset_and_skew();

Firmware/eeprom.cpp

@@ -62,7 +62,7 @@ void eeprom_init()
     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)
+    if (eeprom_read_byte(&(EEPROM_Sheets_base->active_sheet)) == EEPROM_EMPTY_VALUE)
     {
         eeprom_update_byte(&(EEPROM_Sheets_base->active_sheet), 0);
         // When upgrading from version older version (before multiple sheets were implemented in v3.8.0)

Firmware/eeprom.h

@@ -3,9 +3,12 @@
 
 #include <stdint.h>
 
+#define MAX_SHEETS 8
+#define MAX_SHEET_NAME_LENGTH 7
+
 typedef struct
 {
-    char name[7];     //!< Can be null terminated, doesn't need to be null terminated
+    char name[MAX_SHEET_NAME_LENGTH]; //!< 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]
@@ -13,7 +16,7 @@ typedef struct
 
 typedef struct
 {
-    Sheet s[8];
+    Sheet s[MAX_SHEETS];
     uint8_t active_sheet;
 } Sheets;
 // sizeof(Sheets). Do not change it unless EEPROM_Sheets_base is last item in EEPROM.
@@ -25,6 +28,7 @@ static_assert(sizeof(Sheets) == EEPROM_SHEETS_SIZEOF, "Sizeof(Sheets) is not EEP
 #endif
 
 #define EEPROM_EMPTY_VALUE 0xFF
+#define EEPROM_EMPTY_VALUE16 0xFFFF
 // The total size of the EEPROM is
 // 4096 for the Atmega2560
 #define EEPROM_TOP 4096

Firmware/ultralcd.cpp

@@ -3211,15 +3211,10 @@ static void lcd_babystep_z()
 	if (LCD_CLICKED || menu_leaving)
 	{
 		// Only update the EEPROM when leaving the menu.
-		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);
+          uint8_t active_sheet=eeprom_read_byte(&(EEPROM_Sheets_base->active_sheet));
+		eeprom_update_word(reinterpret_cast<uint16_t *>(&(EEPROM_Sheets_base->s[active_sheet].z_offset)),_md->babystepMemZ);
+		eeprom_update_byte(&(EEPROM_Sheets_base->s[active_sheet].bed_temp),target_temperature_bed);
+		eeprom_update_byte(&(EEPROM_Sheets_base->s[active_sheet].pinda_temp),current_temperature_pinda);
 		calibration_status_store(CALIBRATION_STATUS_CALIBRATED);
 	}
 	if (LCD_CLICKED) menu_back();
@@ -6649,7 +6644,7 @@ static void lcd_reset_sheet()
 {
     SheetName sheetName;
     eeprom_default_sheet_name(selected_sheet, sheetName);
-	eeprom_update_word(reinterpret_cast<uint16_t *>(&(EEPROM_Sheets_base->s[selected_sheet].z_offset)),0xffff);
+	eeprom_update_word(reinterpret_cast<uint16_t *>(&(EEPROM_Sheets_base->s[selected_sheet].z_offset)),EEPROM_EMPTY_VALUE16);
 	eeprom_update_block(sheetName.c,EEPROM_Sheets_base->s[selected_sheet].name,sizeof(Sheet::name));
 	if (selected_sheet == eeprom_read_byte(&(EEPROM_Sheets_base->active_sheet)))
 	{