Merge pull request prusa3d#3475 from gudnimg/custom_message_m601

Make M117 message persistent on LCD when used with M601 or G4

Author: leptun

Firmware/Marlin_main.cpp

@@ -4264,7 +4264,7 @@ void process_commands()
         if (starpos != NULL)
             *(starpos) = '\0';
         lcd_setstatus(strchr_pointer + 5);
-        custom_message_type = CustomMsg::MsgUpdate;
+        custom_message_type = CustomMsg::M117;
     }
 
     /*!
@@ -4762,7 +4762,13 @@ eeprom_update_word((uint16_t*)EEPROM_NOZZLE_DIAMETER_uM,0xFFFF);
       codenum = 0;
       if(code_seen('P')) codenum = code_value(); // milliseconds to wait
       if(code_seen('S')) codenum = code_value() * 1000; // seconds to wait
-	  if(codenum != 0) LCD_MESSAGERPGM(_n("Sleep..."));////MSG_DWELL
+      if(codenum != 0)
+      {
+        if(custom_message_type != CustomMsg::M117)
+        {
+          LCD_MESSAGERPGM(_n("Sleep..."));////MSG_DWELL
+        }
+      }
       st_synchronize();
       codenum += _millis();  // keep track of when we started waiting
       previous_millis_cmd.start();

Firmware/ultralcd.cpp

@@ -618,7 +618,7 @@ void lcdui_print_status_line(void)
         }
     } else { // Otherwise check for other special events
         switch (custom_message_type) {
-        case CustomMsg::MsgUpdate: //Short message even while printing from SD
+        case CustomMsg::M117:   // M117 Set the status line message on the LCD
         case CustomMsg::Status: // Nothing special, print status message normally
         case CustomMsg::M0Wait: // M0/M1 Wait command working even from SD
             lcd_print(lcd_status_message);
@@ -875,10 +875,13 @@ void lcd_commands()
 	{
 		if (!blocks_queued() && !homing_flag)
 		{
-			lcd_setstatuspgm(_i("Print paused"));////MSG_PRINT_PAUSED c=20
-            lcd_commands_type = LcdCommands::Idle;
-            lcd_commands_step = 0;
-            long_pause();
+			if (custom_message_type != CustomMsg::M117)
+			{
+				lcd_setstatuspgm(_i("Print paused"));////MSG_PRINT_PAUSED c=20
+			}
+			lcd_commands_type = LcdCommands::Idle;
+			lcd_commands_step = 0;
+			long_pause();
 		}
 	}
 

Firmware/ultralcd.h

@@ -121,8 +121,8 @@ enum class CustomMsg : uint_least8_t
     TempCal,         //!< PINDA temperature calibration
     TempCompPreheat, //!< Temperature compensation preheat
     M0Wait,          //!< M0/M1 Wait command working even from SD
-    MsgUpdate,       //!< Short message even while printing from SD
-    Resuming,       //!< Resuming message
+    M117,            //!< M117 Set the status line message on the LCD
+    Resuming,        //!< Resuming message
 };
 
 extern CustomMsg custom_message_type;