Add "Marlin Dev Mode" option

Marlin/Configuration_adv.h

@@ -1689,4 +1689,7 @@
                               // Default behaviour is limited to Z axis only.
 #endif
 
+// Enable Marlin dev mode which adds some special commands
+//#define MARLIN_DEV_MODE
+
 #endif // CONFIGURATION_ADV_H

Marlin/Marlin_main.cpp

@@ -4053,11 +4053,24 @@ inline void gcode_G28(const bool always_home_all) {
 
   #if ENABLED(DEBUG_LEVELING_FEATURE)
     if (DEBUGGING(LEVELING)) {
-      SERIAL_ECHOLNPGM(">>> gcode_G28");
+      SERIAL_ECHOLNPGM(">>> G28");
       log_machine_info();
     }
   #endif
 
+  #if ENABLED(MARLIN_DEV_MODE)
+    if (parser.seen('S')) {
+      LOOP_XYZ(a) set_axis_is_at_home((AxisEnum)a);
+      SYNC_PLAN_POSITION_KINEMATIC();
+      SERIAL_ECHOLNPGM("Simulated Homing");
+      report_current_position();
+      #if ENABLED(DEBUG_LEVELING_FEATURE)
+        if (DEBUGGING(LEVELING)) SERIAL_ECHOLNPGM("<<< G28");
+      #endif
+      return;
+    }
+  #endif
+
   if (all_axes_known() && parser.boolval('O')) { // home only if needed
     #if ENABLED(DEBUG_LEVELING_FEATURE)
       if (DEBUGGING(LEVELING)) {
@@ -4264,7 +4277,7 @@ inline void gcode_G28(const bool always_home_all) {
   #endif
 
   #if ENABLED(DEBUG_LEVELING_FEATURE)
-    if (DEBUGGING(LEVELING)) SERIAL_ECHOLNPGM("<<< gcode_G28");
+    if (DEBUGGING(LEVELING)) SERIAL_ECHOLNPGM("<<< G28");
   #endif
 } // G28
 

Marlin/example_configurations/AlephObjects/TAZ4/Configuration_adv.h

@@ -1689,4 +1689,7 @@
                               // Default behaviour is limited to Z axis only.
 #endif
 
+// Enable Marlin dev mode which adds some special commands
+//#define MARLIN_DEV_MODE
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/Anet/A6/Configuration_adv.h

@@ -1689,4 +1689,7 @@
                               // Default behaviour is limited to Z axis only.
 #endif
 
+// Enable Marlin dev mode which adds some special commands
+//#define MARLIN_DEV_MODE
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/Anet/A8/Configuration_adv.h

@@ -1689,4 +1689,7 @@
                               // Default behaviour is limited to Z axis only.
 #endif
 
+// Enable Marlin dev mode which adds some special commands
+//#define MARLIN_DEV_MODE
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/BIBO/TouchX/Cyclops/Configuration_adv.h

@@ -1689,4 +1689,7 @@
                               // Default behaviour is limited to Z axis only.
 #endif
 
+// Enable Marlin dev mode which adds some special commands
+//#define MARLIN_DEV_MODE
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/BIBO/TouchX/default/Configuration_adv.h

@@ -1689,4 +1689,7 @@
                               // Default behaviour is limited to Z axis only.
 #endif
 
+// Enable Marlin dev mode which adds some special commands
+//#define MARLIN_DEV_MODE
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/BQ/Hephestos/Configuration_adv.h

@@ -1689,4 +1689,7 @@
                               // Default behaviour is limited to Z axis only.
 #endif
 
+// Enable Marlin dev mode which adds some special commands
+//#define MARLIN_DEV_MODE
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/BQ/Hephestos_2/Configuration_adv.h

@@ -1697,4 +1697,7 @@
                               // Default behaviour is limited to Z axis only.
 #endif
 
+// Enable Marlin dev mode which adds some special commands
+//#define MARLIN_DEV_MODE
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/BQ/WITBOX/Configuration_adv.h

@@ -1689,4 +1689,7 @@
                               // Default behaviour is limited to Z axis only.
 #endif
 
+// Enable Marlin dev mode which adds some special commands
+//#define MARLIN_DEV_MODE
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/Cartesio/Configuration_adv.h

@@ -1689,4 +1689,7 @@
                               // Default behaviour is limited to Z axis only.
 #endif
 
+// Enable Marlin dev mode which adds some special commands
+//#define MARLIN_DEV_MODE
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/Creality/CR-10/Configuration_adv.h

@@ -1692,4 +1692,7 @@
                               // Default behaviour is limited to Z axis only.
 #endif
 
+// Enable Marlin dev mode which adds some special commands
+//#define MARLIN_DEV_MODE
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/Creality/CR-10S/Configuration_adv.h

@@ -1689,4 +1689,7 @@
                               // Default behaviour is limited to Z axis only.
 #endif
 
+// Enable Marlin dev mode which adds some special commands
+//#define MARLIN_DEV_MODE
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/Creality/CR-10mini/Configuration_adv.h

@@ -1689,4 +1689,7 @@
                               // Default behaviour is limited to Z axis only.
 #endif
 
+// Enable Marlin dev mode which adds some special commands
+//#define MARLIN_DEV_MODE
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/Creality/CR-8/Configuration_adv.h

@@ -1689,4 +1689,7 @@
                               // Default behaviour is limited to Z axis only.
 #endif
 
+// Enable Marlin dev mode which adds some special commands
+//#define MARLIN_DEV_MODE
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/Creality/Ender-2/Configuration_adv.h

@@ -1689,4 +1689,7 @@
                               // Default behaviour is limited to Z axis only.
 #endif
 
+// Enable Marlin dev mode which adds some special commands
+//#define MARLIN_DEV_MODE
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/Creality/Ender-3/Configuration_adv.h

@@ -1689,4 +1689,7 @@
                               // Default behaviour is limited to Z axis only.
 #endif
 
+// Enable Marlin dev mode which adds some special commands
+//#define MARLIN_DEV_MODE
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/Creality/Ender-4/Configuration_adv.h

@@ -1689,4 +1689,7 @@
                               // Default behaviour is limited to Z axis only.
 #endif
 
+// Enable Marlin dev mode which adds some special commands
+//#define MARLIN_DEV_MODE
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/Felix/Configuration_adv.h

@@ -1689,4 +1689,7 @@
                               // Default behaviour is limited to Z axis only.
 #endif
 
+// Enable Marlin dev mode which adds some special commands
+//#define MARLIN_DEV_MODE
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/FolgerTech/i3-2020/Configuration_adv.h

@@ -1697,4 +1697,7 @@
                               // Default behaviour is limited to Z axis only.
 #endif
 
+// Enable Marlin dev mode which adds some special commands
+//#define MARLIN_DEV_MODE
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/Geeetech/Prusa i3 Pro C/Configuration_adv.h

@@ -1689,4 +1689,7 @@
                               // Default behaviour is limited to Z axis only.
 #endif
 
+// Enable Marlin dev mode which adds some special commands
+//#define MARLIN_DEV_MODE
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/Geeetech/Prusa i3 Pro W/Configuration_adv.h

@@ -1689,4 +1689,7 @@
                               // Default behaviour is limited to Z axis only.
 #endif
 
+// Enable Marlin dev mode which adds some special commands
+//#define MARLIN_DEV_MODE
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/Infitary/i3-M508/Configuration_adv.h

@@ -1689,4 +1689,7 @@
                               // Default behaviour is limited to Z axis only.
 #endif
 
+// Enable Marlin dev mode which adds some special commands
+//#define MARLIN_DEV_MODE
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/JGAurora/A5/Configuration_adv.h

@@ -1689,4 +1689,7 @@
                               // Default behaviour is limited to Z axis only.
 #endif
 
+// Enable Marlin dev mode which adds some special commands
+//#define MARLIN_DEV_MODE
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/Malyan/M150/Configuration_adv.h

@@ -1689,4 +1689,7 @@
                               // Default behaviour is limited to Z axis only.
 #endif
 
+// Enable Marlin dev mode which adds some special commands
+//#define MARLIN_DEV_MODE
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/Micromake/C1/enhanced/Configuration_adv.h

@@ -1689,4 +1689,7 @@
                               // Default behaviour is limited to Z axis only.
 #endif
 
+// Enable Marlin dev mode which adds some special commands
+//#define MARLIN_DEV_MODE
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/RigidBot/Configuration_adv.h

@@ -1689,4 +1689,7 @@
                               // Default behaviour is limited to Z axis only.
 #endif
 
+// Enable Marlin dev mode which adds some special commands
+//#define MARLIN_DEV_MODE
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/SCARA/Configuration_adv.h

@@ -1689,4 +1689,7 @@
                               // Default behaviour is limited to Z axis only.
 #endif
 
+// Enable Marlin dev mode which adds some special commands
+//#define MARLIN_DEV_MODE
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/Sanguinololu/Configuration_adv.h

@@ -1689,4 +1689,7 @@
                               // Default behaviour is limited to Z axis only.
 #endif
 
+// Enable Marlin dev mode which adds some special commands
+//#define MARLIN_DEV_MODE
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/TinyBoy2/Configuration_adv.h

@@ -1689,4 +1689,7 @@
                               // Default behaviour is limited to Z axis only.
 #endif
 
+// Enable Marlin dev mode which adds some special commands
+//#define MARLIN_DEV_MODE
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/Velleman/K8200/Configuration_adv.h

@@ -1692,4 +1692,7 @@
                               // Default behaviour is limited to Z axis only.
 #endif
 
+// Enable Marlin dev mode which adds some special commands
+//#define MARLIN_DEV_MODE
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/Velleman/K8400/Configuration_adv.h

@@ -1689,4 +1689,7 @@
                               // Default behaviour is limited to Z axis only.
 #endif
 
+// Enable Marlin dev mode which adds some special commands
+//#define MARLIN_DEV_MODE
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/Wanhao/Duplicator 6/Configuration_adv.h

@@ -1691,4 +1691,7 @@
                               // Default behaviour is limited to Z axis only.
 #endif
 
+// Enable Marlin dev mode which adds some special commands
+//#define MARLIN_DEV_MODE
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/delta/FLSUN/auto_calibrate/Configuration_adv.h

@@ -1691,4 +1691,7 @@
                               // Default behaviour is limited to Z axis only.
 #endif
 
+// Enable Marlin dev mode which adds some special commands
+//#define MARLIN_DEV_MODE
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/delta/FLSUN/kossel/Configuration_adv.h

@@ -1691,4 +1691,7 @@
                               // Default behaviour is limited to Z axis only.
 #endif
 
+// Enable Marlin dev mode which adds some special commands
+//#define MARLIN_DEV_MODE
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/delta/FLSUN/kossel_mini/Configuration_adv.h

@@ -1691,4 +1691,7 @@
                               // Default behaviour is limited to Z axis only.
 #endif
 
+// Enable Marlin dev mode which adds some special commands
+//#define MARLIN_DEV_MODE
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/delta/generic/Configuration_adv.h

@@ -1691,4 +1691,7 @@
                               // Default behaviour is limited to Z axis only.
 #endif
 
+// Enable Marlin dev mode which adds some special commands
+//#define MARLIN_DEV_MODE
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/delta/kossel_mini/Configuration_adv.h

@@ -1691,4 +1691,7 @@
                               // Default behaviour is limited to Z axis only.
 #endif
 
+// Enable Marlin dev mode which adds some special commands
+//#define MARLIN_DEV_MODE
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/delta/kossel_pro/Configuration_adv.h

@@ -1696,4 +1696,7 @@
                               // Default behaviour is limited to Z axis only.
 #endif
 
+// Enable Marlin dev mode which adds some special commands
+//#define MARLIN_DEV_MODE
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/delta/kossel_xl/Configuration_adv.h

@@ -1691,4 +1691,7 @@
                               // Default behaviour is limited to Z axis only.
 #endif
 
+// Enable Marlin dev mode which adds some special commands
+//#define MARLIN_DEV_MODE
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/gCreate/gMax1.5+/Configuration_adv.h

@@ -1689,4 +1689,7 @@
                               // Default behaviour is limited to Z axis only.
 #endif
 
+// Enable Marlin dev mode which adds some special commands
+//#define MARLIN_DEV_MODE
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/makibox/Configuration_adv.h

@@ -1689,4 +1689,7 @@
                               // Default behaviour is limited to Z axis only.
 #endif
 
+// Enable Marlin dev mode which adds some special commands
+//#define MARLIN_DEV_MODE
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/tvrrug/Round2/Configuration_adv.h

@@ -1689,4 +1689,7 @@
                               // Default behaviour is limited to Z axis only.
 #endif
 
+// Enable Marlin dev mode which adds some special commands
+//#define MARLIN_DEV_MODE
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/wt150/Configuration_adv.h

@@ -1690,4 +1690,7 @@
                               // Default behaviour is limited to Z axis only.
 #endif
 
+// Enable Marlin dev mode which adds some special commands
+//#define MARLIN_DEV_MODE
+
 #endif // CONFIGURATION_ADV_H