Merge pull request #1945 from NotaRobotexe/fan_er

fan error fix

Firmware/Marlin_main.cpp

@@ -9387,6 +9387,11 @@ void restore_print_from_ram_and_continue(float e_move)
 	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();
@@ -9397,6 +9402,10 @@ 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

Firmware/temperature.cpp

@@ -500,8 +500,9 @@ 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]++;
@@ -560,6 +561,8 @@ void fanSpeedError(unsigned char _fan) {
 	else {
 			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

Firmware/ultralcd.cpp

@@ -6380,6 +6380,7 @@ 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);
@@ -6485,7 +6486,14 @@ 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);
 		}