TFT Pause/Resume works again, but Filament runout does not park the nozzle.

Marlin/Configuration_adv.h

@@ -2471,7 +2471,7 @@
                                                   //   Set to 0 for manual extrusion.
                                                   //   Filament can be extruded repeatedly from the Filament Change menu
                                                   //   until extrusion is consistent, and to purge old filament.
-  #define ADVANCED_PAUSE_RESUME_PRIME          0  // (mm) Extra distance to prime nozzle after returning from park.
+  //#define ADVANCED_PAUSE_RESUME_PRIME        0  // (mm) Extra distance to prime nozzle after returning from park.
   //#define ADVANCED_PAUSE_FANS_PAUSE             // Turn off print-cooling fans while the machine is paused.
 
                                                   // Filament Unload does a Retract, Delay, and Purge first:
@@ -2480,13 +2480,13 @@
   #define FILAMENT_UNLOAD_PURGE_LENGTH         8  // (mm) An unretract is done, then this length is purged.
   #define FILAMENT_UNLOAD_PURGE_FEEDRATE      25  // (mm/s) feedrate to purge before unload
 
-  #define PAUSE_PARK_NOZZLE_TIMEOUT          600  // (seconds) Time limit before the nozzle is turned off for safety.
+  #define PAUSE_PARK_NOZZLE_TIMEOUT           30  // (seconds) Time limit before the nozzle is turned off for safety.
   #define FILAMENT_CHANGE_ALERT_BEEPS         10  // Number of alert beeps to play when a response is needed.
   #define PAUSE_PARK_NO_STEPPER_TIMEOUT           // Enable for XYZ steppers to stay powered on during filament change.
   //#define FILAMENT_CHANGE_RESUME_ON_INSERT      // Automatically continue / load filament when runout sensor is triggered again.
   //#define PAUSE_REHEAT_FAST_RESUME              // Reduce number of waits by not prompting again post-timeout before continuing.
 
-  #define PARK_HEAD_ON_PAUSE                    // Park the nozzle during pause and filament change.
+  #define PARK_HEAD_ON_PAUSE                      // Park the nozzle during pause and filament change.
   //#define HOME_BEFORE_FILAMENT_CHANGE           // If needed, home before parking for filament change
 
   //#define FILAMENT_LOAD_UNLOAD_GCODES           // Add M701/M702 Load/Unload G-codes, plus Load/Unload in the LCD Prepare menu.
@@ -3900,7 +3900,7 @@
  */
 #define HOST_ACTION_COMMANDS
 #if ENABLED(HOST_ACTION_COMMANDS)
-  //#define HOST_PAUSE_M76
+  #define HOST_PAUSE_M76
   #define HOST_PROMPT_SUPPORT
   //#define HOST_START_MENU_ITEM  // Add a menu item that tells the host to start
 #endif

Marlin/src/feature/pause.cpp

@@ -286,7 +286,8 @@ bool load_filament(const_float_t slow_load_length/*=0*/, const_float_t fast_load
           #if EITHER(HAS_LCD_MENU, DWIN_CREALITY_LCD_ENHANCED)
             ui.pause_show_message(PAUSE_MESSAGE_OPTION); // Also sets PAUSE_RESPONSE_WAIT_FOR
           #else
-            pause_menu_response = PAUSE_RESPONSE_WAIT_FOR;
+            //pause_menu_response = PAUSE_RESPONSE_WAIT_FOR;
+            pause_menu_response = PAUSE_RESPONSE_RESUME_PRINT;  // KNUTWURST
           #endif
           while (pause_menu_response == PAUSE_RESPONSE_WAIT_FOR) idle_no_sleep();
         }

Marlin/src/lcd/anycubic_touchscreen.cpp

@@ -353,17 +353,19 @@ void AnycubicTouchscreenClass::StartPrint(){
     break;
   case 1:
     // regular sd pause
-    queue.inject_P(PSTR("M108")); // unpark nozzle
     #ifdef ANYCUBIC_TFT_DEBUG
       SERIAL_ECHOPGM("DEBUG: AI3M Pause State: ", ai3m_pause_state);
       SERIAL_EOL();
-      SERIAL_ECHOLNPGM("DEBUG: M108 Resume from regular pause");
+      SERIAL_ECHOLNPGM("DEBUG: M108/M24 Resume from regular pause");
     #endif
+
     IsParked = false; // remove parked flag
-    wait_for_heatup = false;
-    wait_for_user = false;
     starttime = millis();
     card.startOrResumeFilePrinting(); // resume regularly
+
+    wait_for_heatup = false;
+    wait_for_user = false;
+
     TFTstate = ANYCUBIC_TFT_STATE_SDPRINT;
     ai3m_pause_state = 0;
     #ifdef ANYCUBIC_TFT_DEBUG
@@ -386,12 +388,16 @@ void AnycubicTouchscreenClass::StartPrint(){
     break;
   case 3:
     // paused by filament runout
-    queue.inject_P(PSTR("M24")); // unpark nozzle and resume
     #ifdef ANYCUBIC_TFT_DEBUG
-      SERIAL_ECHOLNPGM("DEBUG: M24 Resume from Filament Runout");
+      SERIAL_ECHOLNPGM("DEBUG: M108/M24 Resume from Filament Runout");
     #endif
-    IsParked = false; // clear flags
+    IsParked = false; // remove parked flag
+    card.startOrResumeFilePrinting(); // resume regularly
+
+    wait_for_heatup = false;
     wait_for_user = false;
+
+    TFTstate = ANYCUBIC_TFT_STATE_SDPRINT;
     ai3m_pause_state = 0;
     #ifdef ANYCUBIC_TFT_DEBUG
       SERIAL_ECHOLNPGM("DEBUG: Filament Pause Flag cleared");
@@ -439,8 +445,7 @@ void AnycubicTouchscreenClass::PausePrint() {
         SERIAL_EOL();
         SERIAL_ECHOLNPGM("DEBUG: Regular Pause");
       #endif
-    }
+    } else { // pause caused by filament runout
-    else { // pause caused by filament runout
     #ifdef ANYCUBIC_TFT_DEBUG
       SERIAL_ECHOLNPGM("DEBUG: Filament Runout Pause");
     #endif
@@ -478,16 +483,18 @@ void AnycubicTouchscreenClass::PausePrint() {
 inline void AnycubicTouchscreenClass::StopPrint()
 {
   // stop print, disable heaters
-  wait_for_user = false;
+  
-  wait_for_heatup = false;
-  IsParked = false;
   if (card.isFileOpen) {
     card.endFilePrintNow();
     card.closefile();
   }
+
+  queue.clear();
+
   #ifdef ANYCUBIC_TFT_DEBUG
     SERIAL_ECHOLNPGM("DEBUG: Stopped and cleared");
   #endif
+
   print_job_timer.stop();
   thermalManager.disable_all_heaters();
   ai3m_pause_state = 0;
@@ -502,17 +509,21 @@ inline void AnycubicTouchscreenClass::StopPrint()
 }
 
 void AnycubicTouchscreenClass::FilamentChangeResume() {
-  wait_for_user = false;  //must be done twice, since we have a bug in marlin
-  wait_for_heatup = false;
-  // call M108 to break out of M600 pause
-  queue.inject_P(PSTR("M108"));
   #ifdef ANYCUBIC_TFT_DEBUG
     SERIAL_ECHOLNPGM("DEBUG: M108 Resume called");
   #endif
-  wait_for_user = false;
+  
+  IsParked = false; // remove parked flag
+  starttime = millis();
+  card.startOrResumeFilePrinting(); // resume regularly
+
   wait_for_heatup = false;
-  // resume with proper progress state
+  wait_for_user = false;
-  card.startOrResumeFilePrinting();
+
+  TFTstate = ANYCUBIC_TFT_STATE_SDPRINT;
+  ai3m_pause_state = 0;
+
+
   #ifdef ANYCUBIC_TFT_DEBUG
     SERIAL_ECHOLNPGM("DEBUG: M108 Resume done");
   #endif
@@ -539,7 +550,10 @@ void AnycubicTouchscreenClass::ReheatNozzle() {
   #ifdef ANYCUBIC_TFT_DEBUG
     SERIAL_ECHOLNPGM("DEBUG: Send reheat M108");
   #endif
-  queue.inject_P(PSTR("M108"));
+
+  wait_for_heatup = false;
+  wait_for_user = false;
+
   #ifdef ANYCUBIC_TFT_DEBUG
     SERIAL_ECHOLNPGM("DEBUG: Resume heating");
   #endif
@@ -557,10 +571,6 @@ void AnycubicTouchscreenClass::ReheatNozzle() {
       SERIAL_EOL();
     #endif
   }
-
-  wait_for_user = false;
-  wait_for_heatup = false;
-
   // set pause state to show CONTINUE button again
   TFTstate = ANYCUBIC_TFT_STATE_SDPAUSE_REQ;
 }