stop print during auto home and mesh bed leveling improved

Firmware/Marlin_main.cpp

@@ -2938,20 +2938,33 @@ void process_commands()
 			// We don't know where we are! HOME!
 			// Push the commands to the front of the message queue in the reverse order!
 			// There shall be always enough space reserved for these commands.
-			repeatcommand_front(); // repeat G80 with all its parameters
-			enquecommand_front_P((PSTR("G28 W0")));
+			if (lcd_commands_type != LCD_COMMAND_STOP_PRINT) {
+				repeatcommand_front(); // repeat G80 with all its parameters
+				enquecommand_front_P((PSTR("G28 W0")));
+			}
+			else {
+				mesh_bed_leveling_flag = false;
+			}
 			break;
 		} 
 		
 		if (run == false && temp_cal_active == true && calibration_status_pinda() == true && target_temperature_bed >= 50) {
-			temp_compensation_start();
-			run = true;
-			repeatcommand_front(); // repeat G80 with all its parameters
-			enquecommand_front_P((PSTR("G28 W0")));
+			if (lcd_commands_type != LCD_COMMAND_STOP_PRINT) {
+				temp_compensation_start();
+				run = true;
+				repeatcommand_front(); // repeat G80 with all its parameters
+				enquecommand_front_P((PSTR("G28 W0")));
+			}
+			else {
+				mesh_bed_leveling_flag = false;
+			}
 			break;
 		}
 		run = false;
-
+		if (lcd_commands_type == LCD_COMMAND_STOP_PRINT) {
+			mesh_bed_leveling_flag = false;
+			break;
+		}
 		// Save custom message state, set a new custom message state to display: Calibrating point 9.
 		bool custom_message_old = custom_message;
 		unsigned int custom_message_type_old = custom_message_type;

Firmware/ultralcd.cpp

@@ -661,7 +661,7 @@ void lcd_commands()
 			cancel_heatup = true;
 			setTargetBed(0);
 			#ifndef SNMM
-			setTargetHotend(0, 0);	//to heating when changing filament for multicolor
+			setTargetHotend(0, 0);	//heating when changing filament for multicolor
 			setTargetHotend(0, 1);
 			setTargetHotend(0, 2);
 			#endif
@@ -3743,18 +3743,21 @@ void lcd_sdcard_stop()
 		}
 		if ((int32_t)encoderPosition == 2)
 		{
-				cancel_heatup = true;
+		cancel_heatup = true;
         #ifdef MESH_BED_LEVELING
         mbl.active = false;
         #endif
         // Stop the stoppers, update the position from the stoppers.
-        planner_abort_hard();
-        // Because the planner_abort_hard() initialized current_position[Z] from the stepper,
-        // Z baystep is no more applied. Reset it.
-        babystep_reset();
+		if (mesh_bed_leveling_flag == false && homing_flag == false) {
+			planner_abort_hard();
+			// Because the planner_abort_hard() initialized current_position[Z] from the stepper,
+			// Z baystep is no more applied. Reset it.
+			babystep_reset();
+		}
         // Clean the input command queue.
         cmdqueue_reset();
 				lcd_setstatuspgm(MSG_PRINT_ABORTED);
+				lcd_update(2);
 				card.sdprinting = false;
 				card.closefile();