✨ Improve pause/filament change for ExtUI (#22655)

Marlin/Configuration_adv.h

@@ -2425,6 +2425,8 @@
   #define PAUSE_PARK_NOZZLE_TIMEOUT           45  // (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 HOME_BEFORE_FILAMENT_CHANGE           // If needed, home before parking for filament change

Marlin/src/feature/pause.cpp

@@ -203,6 +203,16 @@ bool load_filament(const_float_t slow_load_length/*=0*/, const_float_t fast_load
 
     while (wait_for_user) {
       impatient_beep(max_beep_count);
+      #if BOTH(FILAMENT_CHANGE_RESUME_ON_INSERT, FILAMENT_RUNOUT_SENSOR)
+        #if ENABLED(MULTI_FILAMENT_SENSOR)
+          #define _CASE_INSERTED(N) case N-1: if (READ(FIL_RUNOUT##N##_PIN) != FIL_RUNOUT##N##_STATE) wait_for_user = false; break;
+          switch (active_extruder) {
+            REPEAT_S(1, INCREMENT(NUM_RUNOUT_SENSORS), _CASE_INSERTED)
+          }
+        #else
+          if (READ(FIL_RUNOUT_PIN) != FIL_RUNOUT_STATE) wait_for_user = false;
+        #endif
+      #endif
       idle_no_sleep();
     }
   }
@@ -545,14 +555,12 @@ void wait_for_confirmation(const bool is_reload/*=false*/, const int8_t max_beep
       HOTEND_LOOP() thermalManager.heater_idle[e].start(nozzle_timeout);
 
       TERN_(HOST_PROMPT_SUPPORT, host_prompt_do(PROMPT_USER_CONTINUE, GET_TEXT(MSG_REHEATDONE), CONTINUE_STR));
-
       TERN_(EXTENSIBLE_UI, ExtUI::onUserConfirmRequired_P(GET_TEXT(MSG_REHEATDONE)));
-
       TERN_(DWIN_CREALITY_LCD_ENHANCED, ui.set_status_P(GET_TEXT(MSG_REHEATDONE)));
 
-      wait_for_user = true;
-      nozzle_timed_out = false;
+      IF_DISABLED(PAUSE_REHEAT_FAST_RESUME, wait_for_user = true);
 
+      nozzle_timed_out = false;
       first_impatient_beep(max_beep_count);
     }
     idle_no_sleep();

Marlin/src/lcd/extui/ui_api.cpp

@@ -1037,6 +1037,8 @@ namespace ExtUI {
 
   #if M600_PURGE_MORE_RESUMABLE
     void setPauseMenuResponse(PauseMenuResponse response) { pause_menu_response = response; }
+    PauseMessage pauseModeStatus = PAUSE_MESSAGE_STATUS;
+    PauseMode getPauseMode() { return pause_mode;}
   #endif
 
   void printFile(const char *filename) {

Marlin/src/lcd/extui/ui_api.h

@@ -234,6 +234,8 @@ namespace ExtUI {
 
   #if M600_PURGE_MORE_RESUMABLE
     void setPauseMenuResponse(PauseMenuResponse);
+    extern PauseMessage pauseModeStatus;
+    PauseMode getPauseMode();
   #endif
 
   #if ENABLED(LIN_ADVANCE)

Marlin/src/lcd/marlinui.cpp

@@ -1716,9 +1716,8 @@ constexpr uint8_t epps = ENCODER_PULSES_PER_STEP;
     const PauseMode mode/*=PAUSE_MODE_SAME*/,
     const uint8_t extruder/*=active_extruder*/
   ) {
-    if (mode == PAUSE_MODE_SAME)
-      return;
     pause_mode = mode;
+    ExtUI::pauseModeStatus = message;
     switch (message) {
       case PAUSE_MESSAGE_PARKING:  ExtUI::onUserConfirmRequired_P(GET_TEXT(MSG_PAUSE_PRINT_PARKING));
       case PAUSE_MESSAGE_CHANGING: ExtUI::onUserConfirmRequired_P(GET_TEXT(MSG_FILAMENT_CHANGE_INIT));
@@ -1727,11 +1726,7 @@ constexpr uint8_t epps = ENCODER_PULSES_PER_STEP;
       case PAUSE_MESSAGE_INSERT:   ExtUI::onUserConfirmRequired_P(GET_TEXT(MSG_FILAMENT_CHANGE_INSERT));
       case PAUSE_MESSAGE_LOAD:     ExtUI::onUserConfirmRequired_P(GET_TEXT(MSG_FILAMENT_CHANGE_LOAD));
       case PAUSE_MESSAGE_PURGE:
-        #if ENABLED(ADVANCED_PAUSE_CONTINUOUS_PURGE)
-          ExtUI::onUserConfirmRequired_P(GET_TEXT(MSG_FILAMENT_CHANGE_CONT_PURGE));
-        #else
-          ExtUI::onUserConfirmRequired_P(GET_TEXT(MSG_FILAMENT_CHANGE_PURGE));
-        #endif
+        ExtUI::onUserConfirmRequired_P(GET_TEXT(TERN(ADVANCED_PAUSE_CONTINUOUS_PURGE, MSG_FILAMENT_CHANGE_CONT_PURGE, MSG_FILAMENT_CHANGE_PURGE)));
       case PAUSE_MESSAGE_RESUME:   ExtUI::onUserConfirmRequired_P(GET_TEXT(MSG_FILAMENT_CHANGE_RESUME));
       case PAUSE_MESSAGE_HEAT:     ExtUI::onUserConfirmRequired_P(GET_TEXT(MSG_FILAMENT_CHANGE_HEAT));
       case PAUSE_MESSAGE_HEATING:  ExtUI::onUserConfirmRequired_P(GET_TEXT(MSG_FILAMENT_CHANGE_HEATING));

buildroot/tests/BIGTREE_GTR_V1_0

@@ -12,10 +12,11 @@ opt_set MOTHERBOARD BOARD_BTT_GTR_V1_0 SERIAL_PORT -1 \
 # Not necessary to enable auto-fan for all extruders to hit problematic code paths
 opt_set E0_AUTO_FAN_PIN PC10 E1_AUTO_FAN_PIN PC11 E2_AUTO_FAN_PIN PC12 NEOPIXEL_PIN PF13 \
         X_DRIVER_TYPE TMC2208 Y_DRIVER_TYPE TMC2130 \
-        FIL_RUNOUT_PIN 3 FIL_RUNOUT2_PIN 4 FIL_RUNOUT3_PIN 5 FIL_RUNOUT4_PIN 6 FIL_RUNOUT5_PIN 7 FIL_RUNOUT6_PIN 8 FIL_RUNOUT7_PIN 9 FIL_RUNOUT8_PIN 10 \
-        FIL_RUNOUT4_STATE HIGH FIL_RUNOUT8_STATE HIGH
+        NUM_RUNOUT_SENSORS 8 FIL_RUNOUT_PIN 3 FIL_RUNOUT2_PIN 4 FIL_RUNOUT3_PIN 5 FIL_RUNOUT4_PIN 6 FIL_RUNOUT5_PIN 7 \
+        FIL_RUNOUT6_PIN 8 FIL_RUNOUT7_PIN 9 FIL_RUNOUT8_PIN 10 FIL_RUNOUT4_STATE HIGH FIL_RUNOUT8_STATE HIGH \
+        FILAMENT_RUNOUT_SCRIPT '"M600 T%c"'
 opt_enable REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER BLTOUCH NEOPIXEL_LED Z_SAFE_HOMING NOZZLE_PARK_FEATURE ADVANCED_PAUSE_FEATURE \
-           FILAMENT_RUNOUT_SENSOR FIL_RUNOUT4_PULLUP FIL_RUNOUT8_PULLUP
+           FILAMENT_RUNOUT_SENSOR FIL_RUNOUT4_PULLUP FIL_RUNOUT8_PULLUP FILAMENT_CHANGE_RESUME_ON_INSERT PAUSE_REHEAT_FAST_RESUME
 exec_test $1 $2 "BigTreeTech GTR | 8 Extruders | Auto-Fan | Mixed TMC Drivers | Runout Sensors w/ distinct states" "$3"
 
 restore_configs