🔧 Assert zero Z homing clearance for some (#27370)

MarlinFirmware · Sep 2, 2024 · 3743980 · 3743980
1 parent 41d53a1
commit 3743980
Show file tree

Hide file tree

Showing 2 changed files with 6 additions and 2 deletions.
diff --git a/Marlin/src/inc/SanityCheck.h b/Marlin/src/inc/SanityCheck.h
@@ -1776,7 +1776,10 @@ static_assert(NUM_SERVOS <= NUM_SERVO_PLUGS, "NUM_SERVOS (or some servo index) i
  * Make sure Z_CLEARANCE_FOR_HOMING is below Z_MAX_POS
  */
 #if HAS_Z_AXIS
-  static_assert(Z_CLEARANCE_FOR_HOMING <= Z_MAX_POS, "Z_CLEARANCE_FOR_HOMING must be smaller than or equal to Z_MAX_POS.");
+  static_assert(Z_CLEARANCE_FOR_HOMING <= Z_MAX_POS, "Z_CLEARANCE_FOR_HOMING must be less than or equal to Z_MAX_POS.");
+  #if ALL(Z_HOME_TO_MAX, HOME_Z_FIRST) && NONE(DELTA, TPARA)
+    static_assert(Z_CLEARANCE_FOR_HOMING == 0, "Z_CLEARANCE_FOR_HOMING must be 0.");
+  #endif
 #endif
 
 // Check Safe Bed Leveling settings

diff --git a/buildroot/tests/rambo b/buildroot/tests/rambo
@@ -52,7 +52,8 @@ opt_set MOTHERBOARD BOARD_RAMBO \
         MANUAL_FEEDRATE '{ 50*60, 50*60, 4*60 }' \
         AXIS_RELATIVE_MODES '{ false, false, false }' \
         BED_TRAMMING_LEVELING_ORDER '{ LF, RF }' \
-        X2_DRIVER_TYPE A4988 Y2_DRIVER_TYPE A4988
+        X2_DRIVER_TYPE A4988 Y2_DRIVER_TYPE A4988 \
+        Z_CLEARANCE_FOR_HOMING 0
 opt_enable REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER REVERSE_ENCODER_DIRECTION SDSUPPORT EEPROM_SETTINGS \
            S_CURVE_ACCELERATION X_DUAL_ENDSTOPS Y_DUAL_ENDSTOPS \
            ADAPTIVE_STEP_SMOOTHING CNC_COORDINATE_SYSTEMS GCODE_MOTION_MODES \