Add BLTouch Support (can be enabled with #define KNUTWURST_BLTOUCH)

Marlin/Configuration.h

@@ -40,6 +40,8 @@
 
 #define KNUTWURST_MEGAS
 #define KNUTWURST_TMC
+//#define KNUTWURST_BLTOUCH
+//#define KNUTWURST_DEBUG
 //#define POWER_OUTAGE_TEST
 
 //===========================================================================
@@ -909,7 +911,9 @@
  *      - normally-open switches to 5V and D32.
  *
  */
-//#define Z_MIN_PROBE_PIN 32 // Pin 32 is the RAMPS default
+#if ENABLED(KNUTWURST_BLTOUCH)
+#define Z_MIN_PROBE_PIN 2 // Pin 32 is the RAMPS default
+#endif
 
 /**
  * Probe Type
@@ -923,7 +927,10 @@
  * Use G29 repeatedly, adjusting the Z height at each point with movement commands
  * or (with LCD_BED_LEVELING) the LCD controller.
  */
+#if DISABLED(KNUTWURST_BLTOUCH)
 #define PROBE_MANUALLY
+#endif
+
 //#define MANUAL_PROBE_START_Z 0.2
 
 /**
@@ -947,7 +954,9 @@
 /**
  * The BLTouch probe uses a Hall effect sensor and emulates a servo.
  */
-//#define BLTOUCH
+#if ENABLED(KNUTWURST_BLTOUCH)
+#define BLTOUCH
+#endif
 
 /**
  * Touch-MI Probe by hotends.fr
@@ -1019,14 +1028,20 @@
  *
  * Specify a Probe position as { X, Y, Z }
  */
+#if ENABLED(KNUTWURST_BLTOUCH)
+#define NOZZLE_TO_PROBE_OFFSET { 29, -15, 0 }
+#endif
+
+#if DISABLED(KNUTWURST_BLTOUCH)
 #define NOZZLE_TO_PROBE_OFFSET { 10, 10, 0 }
+#endif
 
 // Most probes should stay away from the edges of the bed, but
 // with NOZZLE_AS_PROBE this can be negative for a wider probing area.
 #define MIN_PROBE_EDGE 10
 
 // X and Y axis travel speed (mm/m) between probes
-#define XY_PROBE_SPEED 8000
+#define XY_PROBE_SPEED 3600
 
 // Feedrate (mm/m) for the first approach when double-probing (MULTIPLE_PROBING == 2)
 #define Z_PROBE_SPEED_FAST HOMING_FEEDRATE_Z
@@ -1065,14 +1080,23 @@
 #define Z_CLEARANCE_MULTI_PROBE     5 // Z Clearance between multiple probes
 //#define Z_AFTER_PROBING           5 // Z position after probing is done
 
+#if ENABLED(KNUTWURST_BLTOUCH)
+#define Z_PROBE_LOW_POINT          -5 // Farthest distance below the trigger-point to go before stopping
+#endif
+
+#if DISABLED(KNUTWURST_BLTOUCH)
 #define Z_PROBE_LOW_POINT          -2 // Farthest distance below the trigger-point to go before stopping
+#endif
+
 
 // For M851 give a range for adjusting the Z probe offset
 #define Z_PROBE_OFFSET_RANGE_MIN -20
 #define Z_PROBE_OFFSET_RANGE_MAX 20
 
 // Enable the M48 repeatability test to test probe accuracy
-//#define Z_MIN_PROBE_REPEATABILITY_TEST
+#if ENABLED(KNUTWURST_BLTOUCH)
+#define Z_MIN_PROBE_REPEATABILITY_TEST
+#endif
 
 // Before deploy/stow pause for user confirmation
 //#define PAUSE_BEFORE_DEPLOY_STOW
@@ -1286,11 +1310,21 @@
  *   leveling in steps so you can manually adjust the Z height at each grid-point.
  *   With an LCD controller the process is guided step-by-step.
  */
+#if ENABLED(KNUTWURST_BLTOUCH)
+//#define AUTO_BED_LEVELING_3POINT
+//#define AUTO_BED_LEVELING_LINEAR
+#define AUTO_BED_LEVELING_BILINEAR
+//#define AUTO_BED_LEVELING_UBL
+//#define MESH_BED_LEVELING
+#endif
+
+#if DISABLED(KNUTWURST_BLTOUCH)
 //#define AUTO_BED_LEVELING_3POINT
 //#define AUTO_BED_LEVELING_LINEAR
 //#define AUTO_BED_LEVELING_BILINEAR
 //#define AUTO_BED_LEVELING_UBL
 #define MESH_BED_LEVELING
+#endif
 
 /**
  * Normally G28 leaves leveling disabled on completion. Enable
@@ -1303,7 +1337,9 @@
  * Turn on with the command 'M111 S32'.
  * NOTE: Requires a lot of PROGMEM!
  */
-//#define DEBUG_LEVELING_FEATURE
+#if ENABLED(KNUTWURST_DEBUG)
+#define DEBUG_LEVELING_FEATURE
+#endif
 
 #if ANY(MESH_BED_LEVELING, AUTO_BED_LEVELING_BILINEAR, AUTO_BED_LEVELING_UBL)
   // Gradually reduce leveling correction until a set height is reached,
@@ -1335,7 +1371,7 @@
 #if EITHER(AUTO_BED_LEVELING_LINEAR, AUTO_BED_LEVELING_BILINEAR)
 
   // Set the number of grid points per dimension.
-  #define GRID_MAX_POINTS_X 3
+  #define GRID_MAX_POINTS_X 5
   #define GRID_MAX_POINTS_Y GRID_MAX_POINTS_X
 
   // Probe along the Y axis, advancing X after each column

Marlin/Configuration_adv.h

@@ -35,6 +35,8 @@
 
 #define KNUTWURST_MEGAS_ADV
 #define KNUTWURST_TMC_ADV
+//#define KNUTWURST_BLTOUCH
+//#define KNUTWURST_DEBUG
 
 // @section temperature
 
@@ -1471,7 +1473,9 @@
  *
  * Warning: Does not respect endstops!
  */
-//#define BABYSTEPPING
+#if ENABLED(KNUTWURST_BLTOUCH)
+#define BABYSTEPPING
+#endif
 #if ENABLED(BABYSTEPPING)
   //#define INTEGRATED_BABYSTEPPING         // EXPERIMENTAL integration of babystepping into the Stepper ISR
   //#define BABYSTEP_WITHOUT_HOMING
@@ -1556,12 +1560,23 @@
  * probe points will follow. This prevents any change from causing
  * the probe to be unable to reach any points.
  */
+#if ENABLED(KNUTWURST_BLTOUCH)
+#if PROBE_SELECTED && !IS_KINEMATIC
+  #define MIN_PROBE_EDGE_LEFT 10
+  #define MIN_PROBE_EDGE_RIGHT 10
+  #define MIN_PROBE_EDGE_FRONT 10
+  #define MIN_PROBE_EDGE_BACK 10
+#endif
+#endif
+
+#if DISABLED(KNUTWURST_BLTOUCH)
 #if PROBE_SELECTED && !IS_KINEMATIC
   //#define MIN_PROBE_EDGE_LEFT MIN_PROBE_EDGE
   //#define MIN_PROBE_EDGE_RIGHT MIN_PROBE_EDGE
   //#define MIN_PROBE_EDGE_FRONT MIN_PROBE_EDGE
   //#define MIN_PROBE_EDGE_BACK MIN_PROBE_EDGE
 #endif
+#endif
 
 #if EITHER(MESH_BED_LEVELING, AUTO_BED_LEVELING_UBL)
   // Override the mesh area if the automatic (max) area is too large