Add automatic filament change function with touchscreen controls.

Marlin/src/gcode/feature/pause/M600.cpp

@@ -29,6 +29,11 @@
 #include "../../../module/motion.h"
 #include "../../../module/printcounter.h"
 
+#ifdef ANYCUBIC_TOUCHSCREEN
+#include "../../../lcd/anycubic_touchscreen.h"
+#include "../../../sd/cardreader.h"
+#endif
+
 #if EXTRUDERS > 1
 #include "../../../module/tool_change.h"
 #endif
@@ -59,27 +64,57 @@
  *
  *  Default values are used for omitted arguments.
  */
-void GcodeSuite::M600() {
+void GcodeSuite::M600()
+{
+
+#ifdef ANYCUBIC_TOUCHSCREEN
+#ifdef SDSUPPORT
+  if (card.isPrinting())
+  { // are we printing from sd?
+    if (AnycubicTouchscreen.ai3m_pause_state < 2)
+    {
+      AnycubicTouchscreen.ai3m_pause_state = 2;
+#ifdef ANYCUBIC_TFT_DEBUG
+      SERIAL_ECHOPAIR(" DEBUG: M600 - AI3M Pause State set to: ", AnycubicTouchscreen.ai3m_pause_state);
+      SERIAL_EOL();
+#endif
+    }
+#ifdef ANYCUBIC_TFT_DEBUG
+    SERIAL_ECHOLNPGM("DEBUG: Enter M600 TFTstate routine");
+#endif
+    AnycubicTouchscreen.TFTstate = ANYCUBIC_TFT_STATE_SDPAUSE_REQ; // enter correct display state to show resume button
+#ifdef ANYCUBIC_TFT_DEBUG
+    SERIAL_ECHOLNPGM("DEBUG: Set TFTstate to SDPAUSE_REQ");
+#endif
+  }
+#endif
+#endif
+
+  xyz_pos_t park_point = NOZZLE_PARK_POINT;
 
 #if ENABLED(MIXING_EXTRUDER)
   const int8_t target_e_stepper = get_target_e_stepper_from_command();
-    if (target_e_stepper < 0) return;
+  if (target_e_stepper < 0)
+    return;
 
   const uint8_t old_mixing_tool = mixer.get_current_vtool();
   mixer.T(MIXER_DIRECT_SET_TOOL);
 
-    MIXER_STEPPER_LOOP(i) mixer.set_collector(i, i == uint8_t(target_e_stepper) ? 1.0 : 0.0);
+  MIXER_STEPPER_LOOP(i)
+  mixer.set_collector(i, i == uint8_t(target_e_stepper) ? 1.0 : 0.0);
   mixer.normalize();
 
   const int8_t target_extruder = active_extruder;
 #else
   const int8_t target_extruder = get_target_extruder_from_command();
-    if (target_extruder < 0) return;
+  if (target_extruder < 0)
+    return;
 #endif
 
 #if ENABLED(DUAL_X_CARRIAGE)
   int8_t DXC_ext = target_extruder;
-    if (!parser.seen('T')) {  // If no tool index is specified, M600 was (probably) sent in response to filament runout.
+  if (!parser.seen('T'))
+  { // If no tool index is specified, M600 was (probably) sent in response to filament runout.
     // In this case, for duplicating modes set DXC_ext to the extruder that ran out.
 #if HAS_FILAMENT_SENSOR && NUM_RUNOUT_SENSORS > 1
     if (dxc_is_duplicating())
@@ -97,7 +132,8 @@ void GcodeSuite::M600() {
 
 #if ENABLED(HOME_BEFORE_FILAMENT_CHANGE)
   // Don't allow filament change without homing first
-    if (axes_need_homing()) home_all_axes();
+  if (axes_need_homing())
+    home_all_axes();
 #endif
 
 #if EXTRUDERS > 1
@@ -108,7 +144,8 @@ void GcodeSuite::M600() {
 #if ENABLED(DUAL_X_CARRIAGE)
       && dual_x_carriage_mode != DXC_DUPLICATION_MODE && dual_x_carriage_mode != DXC_MIRRORED_MODE
 #endif
-    ) tool_change(target_extruder, false);
+  )
+    tool_change(target_extruder, false);
 #endif
 
   // Initial retract before move to filament change position
@@ -118,14 +155,15 @@ void GcodeSuite::M600() {
 #endif
   );
 
-  xyz_pos_t park_point NOZZLE_PARK_POINT;
-
   // Lift Z axis
-  if (parser.seenval('Z')) park_point.z = parser.linearval('Z');
+  if (parser.seenval('Z'))
+    park_point.z = parser.linearval('Z');
 
   // Move XY axes to filament change position or given position
-  if (parser.seenval('X')) park_point.x = parser.linearval('X');
+  if (parser.seenval('X'))
-  if (parser.seenval('Y')) park_point.y = parser.linearval('Y');
+    park_point.x = parser.linearval('X');
+  if (parser.seenval('Y'))
+    park_point.y = parser.linearval('Y');
 
 #if HAS_HOTEND_OFFSET && NONE(DUAL_X_CARRIAGE, DELTA)
   park_point += hotend_offset[active_extruder];
@@ -157,7 +195,8 @@ void GcodeSuite::M600() {
 #endif
   );
 
-  if (pause_print(retract, park_point, unload_length, true DXC_PASS)) {
+  if (pause_print(retract, park_point, unload_length, true DXC_PASS))
+  {
 #if ENABLED(MMU2_MENUS)
     mmu2_M600();
     resume_print(slow_load_length, fast_load_length, 0, beep_count DXC_PASS);