Add speed configuration for home-bumping movement

Marlin/Configuration.h

     #define RIGHT_PROBE_BED_POSITION 170
     #define FRONT_PROBE_BED_POSITION 20
     #define BACK_PROBE_BED_POSITION 170
+    
+    #define MIN_PROBE_EDGE 10 // The probe square sides can be no smaller than this
 
     // Set the number of grid points per dimension
     // You probably don't need more than 3 (squared=9)
 
   // Offsets to the probe relative to the extruder tip (Hotend - Probe)
   // X and Y offsets must be integers
-  #define X_PROBE_OFFSET_FROM_EXTRUDER -25     // -left  +right
-  #define Y_PROBE_OFFSET_FROM_EXTRUDER -29     // -front +behind
+  #define X_PROBE_OFFSET_FROM_EXTRUDER -25     // Probe on: -left  +right
+  #define Y_PROBE_OFFSET_FROM_EXTRUDER -29     // Probe on: -front +behind
   #define Z_PROBE_OFFSET_FROM_EXTRUDER -12.35  // -below (always!)
 
   #define Z_RAISE_BEFORE_HOMING 4       // (in mm) Raise Z before homing (G28) for Probe Clearance.
   #define Z_RAISE_BEFORE_PROBING 15    //How much the extruder will be raised before traveling to the first probing point.
   #define Z_RAISE_BETWEEN_PROBINGS 5  //How much the extruder will be raised when traveling from between next probing points
 
+   #define Z_PROBE_END_SCRIPT "G1 Z10 F12000\nG1 X15 Y330\nG1 Z0.5\nG1 Z10" //These commands will be executed in the end of G29 routine.
+                                                                            //Useful to retract a deployable probe.
+                                                                           
   //#define Z_PROBE_SLED // turn on if you have a z-probe mounted on a sled like those designed by Charles Bell
   //#define SLED_DOCKING_OFFSET 5 // the extra distance the X axis must travel to pickup the sled. 0 should be fine but you can push it further if you'd like.
 

Marlin/Configuration_adv.h

 #define X_HOME_RETRACT_MM 5
 #define Y_HOME_RETRACT_MM 5
 #define Z_HOME_RETRACT_MM 2
+#define HOMING_BUMP_DIVISOR {10, 10, 20}  // Re-Bump Speed Divisor (Divides the Homing Feedrate)
 //#define QUICK_HOME  //if this is defined, if both x and y are to be homed, a diagonal move will be performed initially.
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}

Marlin/Marlin_main.cpp

 #endif
 
 float homing_feedrate[] = HOMING_FEEDRATE;
+int homing_bump_divisor[] = HOMING_BUMP_DIVISOR;
 bool axis_relative_modes[] = AXIS_RELATIVE_MODES;
 int feedmultiply = 100; //100->1 200->2
 int saved_feedmultiply;
     st_synchronize();
 
     // move back down slowly to find bed
-    feedrate = homing_feedrate[Z_AXIS]/4;
+    
+    if (homing_bump_divisor[Z_AXIS] >= 1)
+    {
+        feedrate = homing_feedrate[Z_AXIS]/homing_bump_divisor[Z_AXIS];
+    } 
+    else
+    {
+        feedrate = homing_feedrate[Z_AXIS]/10;
+        SERIAL_ECHOLN("Warning: The Homing Bump Feedrate Divisor cannot be less then 1");
+    }
+
+    
     zPosition -= home_retract_mm(Z_AXIS) * 2;
     plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], zPosition, current_position[E_AXIS], feedrate/60, active_extruder);
     st_synchronize();
     st_synchronize();
 
     destination[axis] = 2*home_retract_mm(axis) * axis_home_dir;
-#ifdef DELTA
-    feedrate = homing_feedrate[axis]/10;
-#else
-    feedrate = homing_feedrate[axis]/2 ;
-#endif
+
+    if (homing_bump_divisor[axis] >= 1)
+    {
+        feedrate = homing_feedrate[axis]/homing_bump_divisor[axis];
+    } 
+    else
+    {
+        feedrate = homing_feedrate[axis]/10;
+        SERIAL_ECHOLN("Warning: The Homing Bump Feedrate Divisor cannot be less then 1");
+    }
+
     plan_buffer_line(destination[X_AXIS], destination[Y_AXIS], destination[Z_AXIS], destination[E_AXIS], feedrate/60, active_extruder);
     st_synchronize();
 #ifdef DELTA
 
   #ifdef AUTO_BED_LEVELING_GRID
 
-    #define MIN_PROBE_EDGE 20 // The probe square sides can be no smaller than this
-
     // Make sure probing points are reachable
 
     #if LEFT_PROBE_BED_POSITION < MIN_PROBE_X
-      #error The given LEFT_PROBE_BED_POSITION can't be reached by the probe.
+      #error "The given LEFT_PROBE_BED_POSITION can't be reached by the probe."
     #elif RIGHT_PROBE_BED_POSITION > MAX_PROBE_X
-      #error The given RIGHT_PROBE_BED_POSITION can't be reached by the probe.
+      #error "The given RIGHT_PROBE_BED_POSITION can't be reached by the probe."
     #elif FRONT_PROBE_BED_POSITION < MIN_PROBE_Y
-      #error The given FRONT_PROBE_BED_POSITION can't be reached by the probe.
+      #error "The given FRONT_PROBE_BED_POSITION can't be reached by the probe."
     #elif BACK_PROBE_BED_POSITION > MAX_PROBE_Y
-      #error The given BACK_PROBE_BED_POSITION can't be reached by the probe.
-
-    // Check if Probe_Offset * Grid Points is greater than Probing Range
-
-    #elif abs(X_PROBE_OFFSET_FROM_EXTRUDER) * (AUTO_BED_LEVELING_GRID_POINTS-1) >= RIGHT_PROBE_BED_POSITION - LEFT_PROBE_BED_POSITION
-      #error "The X axis probing range is not enough to fit all the points defined in AUTO_BED_LEVELING_GRID_POINTS"
-    #elif abs(Y_PROBE_OFFSET_FROM_EXTRUDER) * (AUTO_BED_LEVELING_GRID_POINTS-1) >= BACK_PROBE_BED_POSITION - FRONT_PROBE_BED_POSITION
-      #error "The Y axis probing range is not enough to fit all the points defined in AUTO_BED_LEVELING_GRID_POINTS"
+      #error "The given BACK_PROBE_BED_POSITION can't be reached by the probe."
     #endif
 
   #else // !AUTO_BED_LEVELING_GRID
 
     #if ABL_PROBE_PT_1_X < MIN_PROBE_X || ABL_PROBE_PT_1_X > MAX_PROBE_X
-      #error The given ABL_PROBE_PT_1_X can't be reached by the probe.
+      #error "The given ABL_PROBE_PT_1_X can't be reached by the probe."
     #elif ABL_PROBE_PT_2_X < MIN_PROBE_X || ABL_PROBE_PT_2_X > MAX_PROBE_X
-      #error The given ABL_PROBE_PT_2_X can't be reached by the probe.
+      #error "The given ABL_PROBE_PT_2_X can't be reached by the probe."
     #elif ABL_PROBE_PT_3_X < MIN_PROBE_X || ABL_PROBE_PT_3_X > MAX_PROBE_X
-      #error The given ABL_PROBE_PT_3_X can't be reached by the probe.
+      #error "The given ABL_PROBE_PT_3_X can't be reached by the probe."
     #elif ABL_PROBE_PT_1_Y < MIN_PROBE_Y || ABL_PROBE_PT_1_Y > MAX_PROBE_Y
-      #error The given ABL_PROBE_PT_1_Y can't be reached by the probe.
+      #error "The given ABL_PROBE_PT_1_Y can't be reached by the probe."
     #elif ABL_PROBE_PT_2_Y < MIN_PROBE_Y || ABL_PROBE_PT_2_Y > MAX_PROBE_Y
-      #error The given ABL_PROBE_PT_2_Y can't be reached by the probe.
+      #error "The given ABL_PROBE_PT_2_Y can't be reached by the probe."
     #elif ABL_PROBE_PT_3_Y < MIN_PROBE_Y || ABL_PROBE_PT_3_Y > MAX_PROBE_Y
-      #error The given ABL_PROBE_PT_3_Y can't be reached by the probe.
+      #error "The given ABL_PROBE_PT_3_Y can't be reached by the probe."
     #endif
 
   #endif // !AUTO_BED_LEVELING_GRID
         SERIAL_PROTOCOLPGM("G29 Auto Bed Leveling\n");
 
       int auto_bed_leveling_grid_points = code_seen('P') ? code_value_long() : AUTO_BED_LEVELING_GRID_POINTS;
-      if (auto_bed_leveling_grid_points < 2 || auto_bed_leveling_grid_points > AUTO_BED_LEVELING_GRID_POINTS) {
+      if (auto_bed_leveling_grid_points < 2) {
         SERIAL_PROTOCOLPGM("?Number of probed (P)oints is implausible (2 minimum).\n");
         return;
       }
     #ifdef Z_PROBE_SLED
       dock_sled(true, -SLED_DOCKING_OFFSET); // dock the probe, correcting for over-travel
     #endif
+    
+    #ifdef Z_PROBE_END_SCRIPT
+      enquecommands_P(PSTR(Z_PROBE_END_SCRIPT));
+      st_synchronize();
+    #endif
   }
 
   #ifndef Z_PROBE_SLED

Marlin/example_configurations/Hephestos/Configuration.h

     #define RIGHT_PROBE_BED_POSITION 170
     #define FRONT_PROBE_BED_POSITION 20
     #define BACK_PROBE_BED_POSITION 170
+    
+    #define MIN_PROBE_EDGE 10 // The probe square sides can be no smaller than this
 
     // Set the number of grid points per dimension
     // You probably don't need more than 3 (squared=9)

Marlin/example_configurations/Hephestos/Configuration_adv.h

 #define X_HOME_RETRACT_MM 5
 #define Y_HOME_RETRACT_MM 5
 #define Z_HOME_RETRACT_MM 2
+#define HOMING_BUMP_DIVISOR {10, 10, 20}  // Re-Bump Speed Divisor (Divides the Homing Feedrate)
 //#define QUICK_HOME  //if this is defined, if both x and y are to be homed, a diagonal move will be performed initially.
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}

Marlin/example_configurations/K8200/Configuration.h

     #define FRONT_PROBE_BED_POSITION 20
     #define BACK_PROBE_BED_POSITION 170
 
+    #define MIN_PROBE_EDGE 10 // The probe square sides can be no smaller than this    
+    
     // Set the number of grid points per dimension
     // You probably don't need more than 3 (squared=9)
     #define AUTO_BED_LEVELING_GRID_POINTS 2

Marlin/example_configurations/K8200/Configuration_adv.h

 #define X_HOME_RETRACT_MM 5
 #define Y_HOME_RETRACT_MM 5
 #define Z_HOME_RETRACT_MM 3
+#define HOMING_BUMP_DIVISOR {10, 10, 20}  // Re-Bump Speed Divisor (Divides the Homing Feedrate)
 //#define QUICK_HOME  //if this is defined, if both x and y are to be homed, a diagonal move will be performed initially.
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}

Marlin/example_configurations/SCARA/Configuration.h

     #define FRONT_PROBE_BED_POSITION 20
     #define BACK_PROBE_BED_POSITION 170
 
+    #define MIN_PROBE_EDGE 10 // The probe square sides can be no smaller than this    
+    
     // Set the number of grid points per dimension
     // You probably don't need more than 3 (squared=9)
     #define AUTO_BED_LEVELING_GRID_POINTS 2

Marlin/example_configurations/SCARA/Configuration_adv.h

 #define X_HOME_RETRACT_MM 3
 #define Y_HOME_RETRACT_MM 3
 #define Z_HOME_RETRACT_MM 3
+#define HOMING_BUMP_DIVISOR {10, 10, 20}  // Re-Bump Speed Divisor (Divides the Homing Feedrate)
 //#define QUICK_HOME  //if this is defined, if both x and y are to be homed, a diagonal move will be performed initially.
 #ifdef SCARA
 	#define QUICK_HOME //SCARA needs Quickhome

Marlin/example_configurations/WITBOX/Configuration.h

     #define FRONT_PROBE_BED_POSITION 20
     #define BACK_PROBE_BED_POSITION 170
 
+    #define MIN_PROBE_EDGE 10 // The probe square sides can be no smaller than this
+    
     // Set the number of grid points per dimension
     // You probably don't need more than 3 (squared=9)
     #define AUTO_BED_LEVELING_GRID_POINTS 2

Marlin/example_configurations/WITBOX/Configuration_adv.h

 #define X_HOME_RETRACT_MM 5
 #define Y_HOME_RETRACT_MM 5
 #define Z_HOME_RETRACT_MM 2
+#define HOMING_BUMP_DIVISOR {10, 10, 20}  // Re-Bump Speed Divisor (Divides the Homing Feedrate)
 //#define QUICK_HOME  //if this is defined, if both x and y are to be homed, a diagonal move will be performed initially.
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}

Marlin/example_configurations/delta/Configuration_adv.h

 #define X_HOME_RETRACT_MM 5 
 #define Y_HOME_RETRACT_MM 5 
 #define Z_HOME_RETRACT_MM 5 // deltas need the same for all three axis
+#define HOMING_BUMP_DIVISOR {10, 10, 20}  // Re-Bump Speed Divisor (Divides the Homing Feedrate)
 
 //#define QUICK_HOME  //if this is defined, if both x and y are to be homed, a diagonal move will be performed initially.
 

Marlin/example_configurations/makibox/Configuration.h

     #define FRONT_PROBE_BED_POSITION 20
     #define BACK_PROBE_BED_POSITION 170
 
+    #define MIN_PROBE_EDGE 10 // The probe square sides can be no smaller than this    
+    
     // Set the number of grid points per dimension
     // You probably don't need more than 3 (squared=9)
     #define AUTO_BED_LEVELING_GRID_POINTS 2

Marlin/example_configurations/makibox/Configuration_adv.h

 #define X_HOME_RETRACT_MM 5
 #define Y_HOME_RETRACT_MM 5
 #define Z_HOME_RETRACT_MM 2
+#define HOMING_BUMP_DIVISOR {10, 10, 20}  // Re-Bump Speed Divisor (Divides the Homing Feedrate)
 //#define QUICK_HOME  //if this is defined, if both x and y are to be homed, a diagonal move will be performed initially.
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}

Marlin/example_configurations/tvrrug/Round2/Configuration.h

     #define RIGHT_PROBE_BED_POSITION 170
     #define FRONT_PROBE_BED_POSITION 20
     #define BACK_PROBE_BED_POSITION 170
+    
+    #define MIN_PROBE_EDGE 10 // The probe square sides can be no smaller than this    
 
     // Set the number of grid points per dimension
     // You probably don't need more than 3 (squared=9)

Marlin/example_configurations/tvrrug/Round2/Configuration_adv.h

 #define X_HOME_RETRACT_MM 5
 #define Y_HOME_RETRACT_MM 5
 #define Z_HOME_RETRACT_MM 1
+#define HOMING_BUMP_DIVISOR {10, 10, 20}  // Re-Bump Speed Divisor (Divides the Homing Feedrate)
 //#define QUICK_HOME  //if this is defined, if both x and y are to be homed, a diagonal move will be performed initially.
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}