Move T (tool change) to cpp

Marlin/src/Marlin.cpp

   #include "libs/buzzer.h"
 #endif
 
-#if (ENABLED(SWITCHING_EXTRUDER) && !DONT_SWITCH) || ENABLED(SWITCHING_NOZZLE)
-  #include "module/tool_change.h"
-#endif
-
 #if ENABLED(DIGIPOT_I2C)
   #include "feature/digipot/digipot.h"
 #endif
   #include "feature/caselight.h"
 #endif
 
+#if (ENABLED(SWITCHING_EXTRUDER) && !DONT_SWITCH) || ENABLED(SWITCHING_NOZZLE) || ENABLED(PARKING_EXTRUDER)
+  #include "module/tool_change.h"
+#endif
+
 bool Running = true;
 
 /**
   SYNC_PLAN_POSITION_KINEMATIC();
 }
 
-#include "gcode/control/T.h"
-
 #if ENABLED(USE_CONTROLLER_FAN)
 
   void controllerFan() {
   #endif
 
   #if ENABLED(PARKING_EXTRUDER)
-    #if ENABLED(PARKING_EXTRUDER_SOLENOIDS_INVERT)
-      pe_activate_magnet(0);
-      pe_activate_magnet(1);
-    #else
-      pe_deactivate_magnet(0);
-      pe_deactivate_magnet(1);
-    #endif
+    pe_magnet_init();
   #endif
 }
 

Marlin/src/gcode/control/T.h → Marlin/src/gcode/control/T.cpp

  *
  */
 
+#include "../gcode.h"
 #include "../../module/tool_change.h"
 
+#if ENABLED(DEBUG_LEVELING_FEATURE) || HOTENDS > 1
+  #include "../../module/motion.h"
+#endif
+
 /**
  * T0-T3: Switch tool, usually switching extruders
  *
  *   F[units/min] Set the movement feedrate
  *   S1           Don't move the tool in XY after change
  */
-void gcode_T(uint8_t tmp_extruder) {
+void GcodeSuite::T(const uint8_t tmp_extruder) {
 
   #if ENABLED(DEBUG_LEVELING_FEATURE)
     if (DEBUGGING(LEVELING)) {

Marlin/src/gcode/gcode.cpp

 //
 // Placeholders for non-migrated codes
 //
-extern void gcode_T(uint8_t tmp_extruder);
-
 #if ENABLED(M100_FREE_MEMORY_WATCHER)
   extern void M100_dump_routine(const char * const title, const char *start, const char *end);
 #endif
     }
     break;
 
-    case 'T':
-      gcode_T(parser.codenum);
-      break;
+    case 'T': T(parser.codenum); break; // Tn: Tool Change
 
     default: parser.unknown_command_error();
   }

Marlin/src/gcode/gcode.h

 
   static void M999();
 
-  static void T(uint8_t tmp_extruder);
+  static void T(const uint8_t tmp_extruder);
 
 };
 

Marlin/src/module/tool_change.cpp

 
 #if ENABLED(PARKING_EXTRUDER)
 
+  void pe_magnet_init() {
+    for (uint8_t n = 0; n <= 1; ++n)
+      #if ENABLED(PARKING_EXTRUDER_SOLENOIDS_INVERT)
+        pe_activate_magnet(n);
+      #else
+        pe_deactivate_magnet(n);
+      #endif
+  }
+
   void pe_set_magnet(const uint8_t extruder_num, const uint8_t state) {
     switch (extruder_num) {
       case 1: OUT_WRITE(SOL1_PIN, state); break;

Marlin/src/module/tool_change.h

   inline void pe_activate_magnet(const uint8_t extruder_num) { pe_set_magnet(extruder_num, PE_MAGNET_ON_STATE); }
   inline void pe_deactivate_magnet(const uint8_t extruder_num) { pe_set_magnet(extruder_num, !PE_MAGNET_ON_STATE); }
 
+  void pe_magnet_init();
+
 #endif // PARKING_EXTRUDER
 
 /**