Merge pull request #1748 from thinkyhead/raise_before_homing

Apply Z_RAISE_BEFORE_HOMING before homing XY

Marlin/Marlin_main.cpp

@@ -1803,7 +1803,19 @@ inline void gcode_G28() {
     home_all_axis = !homeX && !homeY && !homeZ; // No parameters means home all axes
 
     #if Z_HOME_DIR > 0                      // If homing away from BED do Z first
+
       if (home_all_axis || homeZ) HOMEAXIS(Z);
+
+    #elif !defined(Z_SAFE_HOMING) && defined(Z_RAISE_BEFORE_HOMING) && Z_RAISE_BEFORE_HOMING > 0
+
+      // Raise Z before homing any other axes
+      if (home_all_axis || homeZ) {
+        destination[Z_AXIS] = -Z_RAISE_BEFORE_HOMING * home_dir(Z_AXIS);    // Set destination away from bed
+        feedrate = max_feedrate[Z_AXIS];
+        line_to_destination();
+        st_synchronize();
+      }
+
     #endif
 
     #ifdef QUICK_HOME
@@ -1897,16 +1909,7 @@ inline void gcode_G28() {
 
       #ifndef Z_SAFE_HOMING
 
-        if (home_all_axis || homeZ) {
-          // Raise Z before homing Z? Shouldn't this happen before homing X or Y?
-          #if defined(Z_RAISE_BEFORE_HOMING) && Z_RAISE_BEFORE_HOMING > 0
-            destination[Z_AXIS] = -Z_RAISE_BEFORE_HOMING * home_dir(Z_AXIS);    // Set destination away from bed
-            feedrate = max_feedrate[Z_AXIS];
-            line_to_destination();
-            st_synchronize();
-          #endif
-          HOMEAXIS(Z);
-        }
+        if (home_all_axis || homeZ) HOMEAXIS(Z);
 
       #else // Z_SAFE_HOMING