Merge pull request #4240 from AnHardt/sampler-8-7-16

Today's fix and cleanup collection

Marlin/Conditionals.h

@@ -842,5 +842,20 @@
       #define LCD_FEEDBACK_FREQUENCY_DURATION_MS 2
     #endif
   #endif
+
+  /**
+   * MIN_Z_HEIGHT_FOR_HOMING / Z_RAISE_BETWEEN_PROBINGS
+   */
+   #ifndef MIN_Z_HEIGHT_FOR_HOMING
+     #ifndef Z_RAISE_BETWEEN_PROBINGS
+       #define MIN_Z_HEIGHT_FOR_HOMING 0
+     #else
+       #define MIN_Z_HEIGHT_FOR_HOMING Z_RAISE_BETWEEN_PROBINGS
+     #endif
+   #endif
+   #ifndef Z_RAISE_BETWEEN_PROBINGS
+     #define Z_RAISE_BETWEEN_PROBING MIN_Z_HEIGHT_FOR_HOMING
+   #endif
+
 #endif //CONFIGURATION_LCD
 #endif //CONDITIONALS_H

Marlin/Marlin_main.cpp

@@ -1620,10 +1620,6 @@ static void setup_for_endstop_or_probe_move() {
   feedrate_multiplier = 100;
   refresh_cmd_timeout();
 }
-static void setup_for_endstop_move() {
-  setup_for_endstop_or_probe_move();
-  endstops.enable();
-}
 
 static void clean_up_after_endstop_or_probe_move() {
   #if ENABLED(DEBUG_LEVELING_FEATURE)
@@ -2348,16 +2344,17 @@ static void clean_up_after_endstop_or_probe_move() {
 #define HOMEAXIS(LETTER) homeaxis(LETTER##_AXIS)
 
 static void homeaxis(AxisEnum axis) {
+  #define HOMEAXIS_DO(LETTER) \
+    ((LETTER##_MIN_PIN > -1 && LETTER##_HOME_DIR==-1) || (LETTER##_MAX_PIN > -1 && LETTER##_HOME_DIR==1))
+
+  if (!(axis == X_AXIS ? HOMEAXIS_DO(X) : axis == Y_AXIS ? HOMEAXIS_DO(Y) : axis == Z_AXIS ? HOMEAXIS_DO(Z) : 0)) return;
+
   #if ENABLED(DEBUG_LEVELING_FEATURE)
     if (DEBUGGING(LEVELING)) {
       SERIAL_ECHOPAIR(">>> homeaxis(", axis);
       SERIAL_ECHOLNPGM(")");
     }
   #endif
-  #define HOMEAXIS_DO(LETTER) \
-    ((LETTER##_MIN_PIN > -1 && LETTER##_HOME_DIR==-1) || (LETTER##_MAX_PIN > -1 && LETTER##_HOME_DIR==1))
-
-  if (axis == X_AXIS ? HOMEAXIS_DO(X) : axis == Y_AXIS ? HOMEAXIS_DO(Y) : axis == Z_AXIS ? HOMEAXIS_DO(Z) : 0) {
 
   int axis_home_dir =
     #if ENABLED(DUAL_X_CARRIAGE)
@@ -2394,21 +2391,11 @@ static void homeaxis(AxisEnum axis) {
   current_position[axis] = 0;
   sync_plan_position();
 
-    #if ENABLED(DEBUG_LEVELING_FEATURE)
-      if (DEBUGGING(LEVELING)) SERIAL_ECHOLNPGM("> endstops.enable(false)");
-    #endif
-    endstops.enable(false); // Disable endstops while moving away
-
   // Move away from the endstop by the axis HOME_BUMP_MM
   destination[axis] = -home_bump_mm(axis) * axis_home_dir;
   line_to_destination();
   stepper.synchronize();
 
-    #if ENABLED(DEBUG_LEVELING_FEATURE)
-      if (DEBUGGING(LEVELING)) SERIAL_ECHOLNPGM("> endstops.enable(true)");
-    #endif
-    endstops.enable(true); // Enable endstops for next homing move
-
   // Slow down the feedrate for the next move
   set_homing_bump_feedrate(axis);
 
@@ -2449,10 +2436,6 @@ static void homeaxis(AxisEnum axis) {
   #if ENABLED(DELTA)
     // retrace by the amount specified in endstop_adj
     if (endstop_adj[axis] * axis_home_dir < 0) {
-        #if ENABLED(DEBUG_LEVELING_FEATURE)
-          if (DEBUGGING(LEVELING)) SERIAL_ECHOLNPGM("> endstops.enable(false)");
-        #endif
-        endstops.enable(false); // Disable endstops while moving away
       sync_plan_position();
       destination[axis] = endstop_adj[axis];
       #if ENABLED(DEBUG_LEVELING_FEATURE)
@@ -2463,19 +2446,7 @@ static void homeaxis(AxisEnum axis) {
       #endif
       line_to_destination();
       stepper.synchronize();
-        #if ENABLED(DEBUG_LEVELING_FEATURE)
-          if (DEBUGGING(LEVELING)) SERIAL_ECHOLNPGM("> endstops.enable(true)");
-        #endif
-        endstops.enable(true); // Enable endstops for next homing move
     }
-      #if ENABLED(DEBUG_LEVELING_FEATURE)
-        else {
-          if (DEBUGGING(LEVELING)) {
-            SERIAL_ECHOPAIR("> endstop_adj * axis_home_dir = ", endstop_adj[axis] * axis_home_dir);
-            SERIAL_EOL;
-          }
-        }
-      #endif
   #endif
 
   // Set the axis position to its home position (plus home offsets)
@@ -2502,8 +2473,6 @@ static void homeaxis(AxisEnum axis) {
     }
   #endif
 
-  }
-
   #if ENABLED(DEBUG_LEVELING_FEATURE)
     if (DEBUGGING(LEVELING)) {
       SERIAL_ECHOPAIR("<<< homeaxis(", axis);
@@ -2779,8 +2748,6 @@ inline void gcode_G4() {
       int x_axis_home_dir = home_dir(X_AXIS);
     #endif
 
-    SYNC_PLAN_POSITION_KINEMATIC();
-
     float mlx = max_length(X_AXIS), mly = max_length(Y_AXIS),
           mlratio = mlx > mly ? mly / mlx : mlx / mly;
 
@@ -2789,30 +2756,9 @@ inline void gcode_G4() {
     feedrate = min(homing_feedrate[X_AXIS], homing_feedrate[Y_AXIS]) * sqrt(mlratio * mlratio + 1);
     line_to_destination();
     stepper.synchronize();
-
-    set_axis_is_at_home(X_AXIS);
-    set_axis_is_at_home(Y_AXIS);
-    SYNC_PLAN_POSITION_KINEMATIC();
-
-    #if ENABLED(DEBUG_LEVELING_FEATURE)
-      if (DEBUGGING(LEVELING)) DEBUG_POS("> QUICK_HOME 1", current_position);
-    #endif
-
-    destination[X_AXIS] = current_position[X_AXIS];
-    destination[Y_AXIS] = current_position[Y_AXIS];
-    line_to_destination();
-    stepper.synchronize();
     endstops.hit_on_purpose(); // clear endstop hit flags
 
-    current_position[X_AXIS] = destination[X_AXIS];
+    destination[X_AXIS] = destination[Y_AXIS] = 0;
-    current_position[Y_AXIS] = destination[Y_AXIS];
-    #if DISABLED(SCARA)
-      current_position[Z_AXIS] = destination[Z_AXIS];
-    #endif
-
-    #if ENABLED(DEBUG_LEVELING_FEATURE)
-      if (DEBUGGING(LEVELING)) DEBUG_POS("> QUICK_HOME 2", current_position);
-    #endif
   }
 
 #endif // QUICK_HOME
@@ -2866,7 +2812,12 @@ inline void gcode_G28() {
     }
   #endif
 
-  setup_for_endstop_move();
+  setup_for_endstop_or_probe_move();
+  #if ENABLED(DEBUG_LEVELING_FEATURE)
+    if (DEBUGGING(LEVELING)) SERIAL_ECHOLNPGM("> endstops.enable(true)");
+  #endif
+  endstops.enable(true); // Enable endstops for next homing move
+
 
   #if ENABLED(DELTA)
     /**
@@ -2915,10 +2866,10 @@ inline void gcode_G28() {
         #endif
       }
 
-    #elif defined(MIN_Z_HEIGHT_FOR_HOMING) && MIN_Z_HEIGHT_FOR_HOMING > 0
+    #else
 
-      // Raise Z before homing X or Y, if specified
       if (home_all_axis || homeX || homeY) {
+        // Raise Z before homing any other axes and z is not already high enough (never lower z)
         float z_dest = home_offset[Z_AXIS] + MIN_Z_HEIGHT_FOR_HOMING;
         if (z_dest > current_position[Z_AXIS]) {
 
@@ -2930,19 +2881,13 @@ inline void gcode_G28() {
           #endif
 
           feedrate = homing_feedrate[Z_AXIS];
-
-          #if HAS_BED_PROBE
-            do_blocking_move_to_z(z_dest);
-          #else
           line_to_z(z_dest);
           stepper.synchronize();
-          #endif
-
           destination[Z_AXIS] = current_position[Z_AXIS] = z_dest;
         }
       }
 
-    #endif // MIN_Z_HEIGHT_FOR_HOMING
+    #endif
 
     #if ENABLED(QUICK_HOME)
 
@@ -3044,13 +2989,8 @@ inline void gcode_G28() {
              */
             current_position[X_AXIS] = destination[X_AXIS];
             current_position[Y_AXIS] = destination[Y_AXIS];
-
-            // Home the Z axis
-            HOMEAXIS(Z);
           }
 
-          else if (homeZ) { // Don't need to Home Z twice
-
           // Let's see if X and Y are homed
           if (axis_unhomed_error(true, true, false)) return;
 
@@ -3073,7 +3013,6 @@ inline void gcode_G28() {
             SERIAL_ECHO_START;
             SERIAL_ECHOLNPGM(MSG_ZPROBE_OUT);
           }
-          } // !home_all_axes && homeZ
 
           #if ENABLED(DEBUG_LEVELING_FEATURE)
             if (DEBUGGING(LEVELING)) {
@@ -3099,7 +3038,11 @@ inline void gcode_G28() {
 
   #endif // !DELTA (gcode_G28)
 
+  #if ENABLED(DEBUG_LEVELING_FEATURE)
+    if (DEBUGGING(LEVELING)) SERIAL_ECHOLNPGM("> endstops.not_homing()");
+  #endif
   endstops.not_homing();
+  endstops.hit_on_purpose(); // clear endstop hit flags
 
   // Enable mesh leveling again
   #if ENABLED(MESH_BED_LEVELING)
@@ -3139,8 +3082,6 @@ inline void gcode_G28() {
 
   clean_up_after_endstop_or_probe_move();
 
-  endstops.hit_on_purpose(); // clear endstop hit flags
-
   #if ENABLED(DEBUG_LEVELING_FEATURE)
     if (DEBUGGING(LEVELING)) SERIAL_ECHOLNPGM("<<< gcode_G28");
   #endif

Marlin/ultralcd.cpp

@@ -978,17 +978,13 @@ static void lcd_status_screen() {
     // Note: During Manual Bed Leveling the homed Z position is MESH_HOME_SEARCH_Z
     // Z position will be restored with the final action, a G28
     inline void _mbl_goto_xy(float x, float y) {
-      current_position[Z_AXIS] = MESH_HOME_SEARCH_Z
+      current_position[Z_AXIS] = MESH_HOME_SEARCH_Z + MIN_Z_HEIGHT_FOR_HOMING;
-        #if MIN_Z_HEIGHT_FOR_HOMING > 0
-          + MIN_Z_HEIGHT_FOR_HOMING
-        #endif
-      ;
       line_to_current(Z_AXIS);
       current_position[X_AXIS] = x + home_offset[X_AXIS];
       current_position[Y_AXIS] = y + home_offset[Y_AXIS];
       line_to_current(manual_feedrate[X_AXIS] <= manual_feedrate[Y_AXIS] ? X_AXIS : Y_AXIS);
       #if MIN_Z_HEIGHT_FOR_HOMING > 0
-        current_position[Z_AXIS] = MESH_HOME_SEARCH_Z;
+        current_position[Z_AXIS] = MESH_HOME_SEARCH_Z; // How do condition and action match?
         line_to_current(Z_AXIS);
       #endif
       stepper.synchronize();
@@ -1038,11 +1034,7 @@ static void lcd_status_screen() {
           if (_lcd_level_bed_position == (MESH_NUM_X_POINTS) * (MESH_NUM_Y_POINTS)) {
             lcd_goto_screen(_lcd_level_bed_done, true);
 
-            current_position[Z_AXIS] = MESH_HOME_SEARCH_Z
+            current_position[Z_AXIS] = MESH_HOME_SEARCH_Z + MIN_Z_HEIGHT_FOR_HOMING;
-              #if MIN_Z_HEIGHT_FOR_HOMING > 0
-                + MIN_Z_HEIGHT_FOR_HOMING
-              #endif
-            ;
             line_to_current(Z_AXIS);
             stepper.synchronize();