add BLTOUCH support

Marlin/Configuration.h

@@ -21,6 +21,24 @@
  */
 #pragma once
 
+//#warning "Author warning: check bed size and height (X_BED_SIZE, ...), this is for development only"
+
+#define D301_AUTO_LEVELING
+//#warning "Author warning: check if you have auto_leveling on your printer"
+
+// author atsju, this is only to help. Will not be here in production
+#ifdef D301_AUTO_LEVELING
+  #define Z_MIN_PROBE_USES_Z_MIN_ENDSTOP_PIN
+  #define BLTOUCH
+  #define Z_SAFE_HOMING
+  #define AUTO_BED_LEVELING_BILINEAR
+  #define Z_MIN_ENDSTOP_INVERTING false // Set to true to invert the logic of the endstop.
+#else
+  #define Z_MIN_ENDSTOP_INVERTING true // Set to true to invert the logic of the endstop.
+#endif
+
+
+
 /**
  * Configuration.h
  *
@@ -841,7 +859,7 @@
 // Mechanical endstop with COM to ground and NC to Signal uses "false" here (most common setup).
 #define X_MIN_ENDSTOP_INVERTING true // Set to true to invert the logic of the endstop.
 #define Y_MIN_ENDSTOP_INVERTING true // Set to true to invert the logic of the endstop.
-#define Z_MIN_ENDSTOP_INVERTING true // Set to true to invert the logic of the endstop.
+//#define Z_MIN_ENDSTOP_INVERTING false // Set to true to invert the logic of the endstop.
 #define I_MIN_ENDSTOP_INVERTING false // Set to true to invert the logic of the endstop.
 #define J_MIN_ENDSTOP_INVERTING false // Set to true to invert the logic of the endstop.
 #define K_MIN_ENDSTOP_INVERTING false // Set to true to invert the logic of the endstop.

Marlin/Configuration_adv.h

@@ -902,7 +902,7 @@
    * differs, a mode set eeprom write will be completed at initialization.
    * Use the option below to force an eeprom write to a V3.1 probe regardless.
    */
-  #define BLTOUCH_SET_5V_MODE
+  //#define BLTOUCH_SET_5V_MODE
 
   /**
    * Safety: Activate if connecting a probe with an unknown voltage mode.