Permit independent X2,Y2,Z2,Z3,Z4 endstop inverting (#18481)

Marlin/src/inc/Conditionals_post.h

  */
 #if ENABLED(X_DUAL_ENDSTOPS)
   #if X_HOME_DIR > 0
-    #if X2_USE_ENDSTOP == _XMIN_
-      #define X2_MAX_ENDSTOP_INVERTING X_MIN_ENDSTOP_INVERTING
-    #elif X2_USE_ENDSTOP == _XMAX_
-      #define X2_MAX_ENDSTOP_INVERTING X_MAX_ENDSTOP_INVERTING
-    #elif X2_USE_ENDSTOP == _YMIN_
-      #define X2_MAX_ENDSTOP_INVERTING Y_MIN_ENDSTOP_INVERTING
-    #elif X2_USE_ENDSTOP == _YMAX_
-      #define X2_MAX_ENDSTOP_INVERTING Y_MAX_ENDSTOP_INVERTING
-    #elif X2_USE_ENDSTOP == _ZMIN_
-      #define X2_MAX_ENDSTOP_INVERTING Z_MIN_ENDSTOP_INVERTING
-    #elif X2_USE_ENDSTOP == _ZMAX_
-      #define X2_MAX_ENDSTOP_INVERTING Z_MAX_ENDSTOP_INVERTING
-    #else
-      #define X2_MAX_ENDSTOP_INVERTING false
+    #ifndef X2_MAX_ENDSTOP_INVERTING
+      #if X2_USE_ENDSTOP == _XMIN_
+        #define X2_MAX_ENDSTOP_INVERTING X_MIN_ENDSTOP_INVERTING
+      #elif X2_USE_ENDSTOP == _XMAX_
+        #define X2_MAX_ENDSTOP_INVERTING X_MAX_ENDSTOP_INVERTING
+      #elif X2_USE_ENDSTOP == _YMIN_
+        #define X2_MAX_ENDSTOP_INVERTING Y_MIN_ENDSTOP_INVERTING
+      #elif X2_USE_ENDSTOP == _YMAX_
+        #define X2_MAX_ENDSTOP_INVERTING Y_MAX_ENDSTOP_INVERTING
+      #elif X2_USE_ENDSTOP == _ZMIN_
+        #define X2_MAX_ENDSTOP_INVERTING Z_MIN_ENDSTOP_INVERTING
+      #elif X2_USE_ENDSTOP == _ZMAX_
+        #define X2_MAX_ENDSTOP_INVERTING Z_MAX_ENDSTOP_INVERTING
+      #else
+        #define X2_MAX_ENDSTOP_INVERTING false
+      #endif
     #endif
     #ifndef X2_MAX_PIN
       #if X2_USE_ENDSTOP == _XMIN_
         #define X2_MAX_PIN E7_DIAG_PIN
       #endif
     #endif
-    #define X2_MIN_ENDSTOP_INVERTING false
-  #else
-    #if X2_USE_ENDSTOP == _XMIN_
-      #define X2_MIN_ENDSTOP_INVERTING X_MIN_ENDSTOP_INVERTING
-    #elif X2_USE_ENDSTOP == _XMAX_
-      #define X2_MIN_ENDSTOP_INVERTING X_MAX_ENDSTOP_INVERTING
-    #elif X2_USE_ENDSTOP == _YMIN_
-      #define X2_MIN_ENDSTOP_INVERTING Y_MIN_ENDSTOP_INVERTING
-    #elif X2_USE_ENDSTOP == _YMAX_
-      #define X2_MIN_ENDSTOP_INVERTING Y_MAX_ENDSTOP_INVERTING
-    #elif X2_USE_ENDSTOP == _ZMIN_
-      #define X2_MIN_ENDSTOP_INVERTING Z_MIN_ENDSTOP_INVERTING
-    #elif X2_USE_ENDSTOP == _ZMAX_
-      #define X2_MIN_ENDSTOP_INVERTING Z_MAX_ENDSTOP_INVERTING
-    #else
+    #ifndef X2_MIN_ENDSTOP_INVERTING
       #define X2_MIN_ENDSTOP_INVERTING false
     #endif
+  #else
+    #ifndef X2_MIN_ENDSTOP_INVERTING
+      #if X2_USE_ENDSTOP == _XMIN_
+        #define X2_MIN_ENDSTOP_INVERTING X_MIN_ENDSTOP_INVERTING
+      #elif X2_USE_ENDSTOP == _XMAX_
+        #define X2_MIN_ENDSTOP_INVERTING X_MAX_ENDSTOP_INVERTING
+      #elif X2_USE_ENDSTOP == _YMIN_
+        #define X2_MIN_ENDSTOP_INVERTING Y_MIN_ENDSTOP_INVERTING
+      #elif X2_USE_ENDSTOP == _YMAX_
+        #define X2_MIN_ENDSTOP_INVERTING Y_MAX_ENDSTOP_INVERTING
+      #elif X2_USE_ENDSTOP == _ZMIN_
+        #define X2_MIN_ENDSTOP_INVERTING Z_MIN_ENDSTOP_INVERTING
+      #elif X2_USE_ENDSTOP == _ZMAX_
+        #define X2_MIN_ENDSTOP_INVERTING Z_MAX_ENDSTOP_INVERTING
+      #else
+        #define X2_MIN_ENDSTOP_INVERTING false
+      #endif
+    #endif
     #ifndef X2_MIN_PIN
       #if X2_USE_ENDSTOP == _XMIN_
         #define X2_MIN_PIN X_MIN_PIN
         #define X2_MIN_PIN E7_DIAG_PIN
       #endif
     #endif
-    #define X2_MAX_ENDSTOP_INVERTING false
+    #ifndef X2_MAX_ENDSTOP_INVERTING
+      #define X2_MAX_ENDSTOP_INVERTING false
+    #endif
   #endif
 #endif
 
  */
 #if ENABLED(Y_DUAL_ENDSTOPS)
   #if Y_HOME_DIR > 0
-    #if Y2_USE_ENDSTOP == _XMIN_
-      #define Y2_MAX_ENDSTOP_INVERTING X_MIN_ENDSTOP_INVERTING
-    #elif Y2_USE_ENDSTOP == _XMAX_
-      #define Y2_MAX_ENDSTOP_INVERTING X_MAX_ENDSTOP_INVERTING
-    #elif Y2_USE_ENDSTOP == _YMIN_
-      #define Y2_MAX_ENDSTOP_INVERTING Y_MIN_ENDSTOP_INVERTING
-    #elif Y2_USE_ENDSTOP == _YMAX_
-      #define Y2_MAX_ENDSTOP_INVERTING Y_MAX_ENDSTOP_INVERTING
-    #elif Y2_USE_ENDSTOP == _ZMIN_
-      #define Y2_MAX_ENDSTOP_INVERTING Z_MIN_ENDSTOP_INVERTING
-    #elif Y2_USE_ENDSTOP == _ZMAX_
-      #define Y2_MAX_ENDSTOP_INVERTING Z_MAX_ENDSTOP_INVERTING
-    #else
-      #define Y2_MAX_ENDSTOP_INVERTING false
+    #ifndef Y2_MAX_ENDSTOP_INVERTING
+      #if Y2_USE_ENDSTOP == _XMIN_
+        #define Y2_MAX_ENDSTOP_INVERTING X_MIN_ENDSTOP_INVERTING
+      #elif Y2_USE_ENDSTOP == _XMAX_
+        #define Y2_MAX_ENDSTOP_INVERTING X_MAX_ENDSTOP_INVERTING
+      #elif Y2_USE_ENDSTOP == _YMIN_
+        #define Y2_MAX_ENDSTOP_INVERTING Y_MIN_ENDSTOP_INVERTING
+      #elif Y2_USE_ENDSTOP == _YMAX_
+        #define Y2_MAX_ENDSTOP_INVERTING Y_MAX_ENDSTOP_INVERTING
+      #elif Y2_USE_ENDSTOP == _ZMIN_
+        #define Y2_MAX_ENDSTOP_INVERTING Z_MIN_ENDSTOP_INVERTING
+      #elif Y2_USE_ENDSTOP == _ZMAX_
+        #define Y2_MAX_ENDSTOP_INVERTING Z_MAX_ENDSTOP_INVERTING
+      #else
+        #define Y2_MAX_ENDSTOP_INVERTING false
+      #endif
     #endif
     #ifndef Y2_MAX_PIN
       #if Y2_USE_ENDSTOP == _XMIN_
         #define Y2_MAX_PIN E7_DIAG_PIN
       #endif
     #endif
-    #define Y2_MIN_ENDSTOP_INVERTING false
-  #else
-    #if Y2_USE_ENDSTOP == _XMIN_
-      #define Y2_MIN_ENDSTOP_INVERTING X_MIN_ENDSTOP_INVERTING
-    #elif Y2_USE_ENDSTOP == _XMAX_
-      #define Y2_MIN_ENDSTOP_INVERTING X_MAX_ENDSTOP_INVERTING
-    #elif Y2_USE_ENDSTOP == _YMIN_
-      #define Y2_MIN_ENDSTOP_INVERTING Y_MIN_ENDSTOP_INVERTING
-    #elif Y2_USE_ENDSTOP == _YMAX_
-      #define Y2_MIN_ENDSTOP_INVERTING Y_MAX_ENDSTOP_INVERTING
-    #elif Y2_USE_ENDSTOP == _ZMIN_
-      #define Y2_MIN_ENDSTOP_INVERTING Z_MIN_ENDSTOP_INVERTING
-    #elif Y2_USE_ENDSTOP == _ZMAX_
-      #define Y2_MIN_ENDSTOP_INVERTING Z_MAX_ENDSTOP_INVERTING
-    #else
+    #ifndef Y2_MIN_ENDSTOP_INVERTING
       #define Y2_MIN_ENDSTOP_INVERTING false
     #endif
+  #else
+    #ifndef Y2_MIN_ENDSTOP_INVERTING
+      #if Y2_USE_ENDSTOP == _XMIN_
+        #define Y2_MIN_ENDSTOP_INVERTING X_MIN_ENDSTOP_INVERTING
+      #elif Y2_USE_ENDSTOP == _XMAX_
+        #define Y2_MIN_ENDSTOP_INVERTING X_MAX_ENDSTOP_INVERTING
+      #elif Y2_USE_ENDSTOP == _YMIN_
+        #define Y2_MIN_ENDSTOP_INVERTING Y_MIN_ENDSTOP_INVERTING
+      #elif Y2_USE_ENDSTOP == _YMAX_
+        #define Y2_MIN_ENDSTOP_INVERTING Y_MAX_ENDSTOP_INVERTING
+      #elif Y2_USE_ENDSTOP == _ZMIN_
+        #define Y2_MIN_ENDSTOP_INVERTING Z_MIN_ENDSTOP_INVERTING
+      #elif Y2_USE_ENDSTOP == _ZMAX_
+        #define Y2_MIN_ENDSTOP_INVERTING Z_MAX_ENDSTOP_INVERTING
+      #else
+        #define Y2_MIN_ENDSTOP_INVERTING false
+      #endif
+    #endif
     #ifndef Y2_MIN_PIN
       #if Y2_USE_ENDSTOP == _XMIN_
         #define Y2_MIN_PIN X_MIN_PIN
         #define Y2_MIN_PIN E7_DIAG_PIN
       #endif
     #endif
-    #define Y2_MAX_ENDSTOP_INVERTING false
+    #ifndef Y2_MAX_ENDSTOP_INVERTING
+      #define Y2_MAX_ENDSTOP_INVERTING false
+    #endif
   #endif
 #endif
 
 #if ENABLED(Z_MULTI_ENDSTOPS)
 
   #if Z_HOME_DIR > 0
-    #if Z2_USE_ENDSTOP == _XMIN_
-      #define Z2_MAX_ENDSTOP_INVERTING X_MIN_ENDSTOP_INVERTING
-    #elif Z2_USE_ENDSTOP == _XMAX_
-      #define Z2_MAX_ENDSTOP_INVERTING X_MAX_ENDSTOP_INVERTING
-    #elif Z2_USE_ENDSTOP == _YMIN_
-      #define Z2_MAX_ENDSTOP_INVERTING Y_MIN_ENDSTOP_INVERTING
-    #elif Z2_USE_ENDSTOP == _YMAX_
-      #define Z2_MAX_ENDSTOP_INVERTING Y_MAX_ENDSTOP_INVERTING
-    #elif Z2_USE_ENDSTOP == _ZMIN_
-      #define Z2_MAX_ENDSTOP_INVERTING Z_MIN_ENDSTOP_INVERTING
-    #elif Z2_USE_ENDSTOP == _ZMAX_
-      #define Z2_MAX_ENDSTOP_INVERTING Z_MAX_ENDSTOP_INVERTING
-    #else
-      #define Z2_MAX_ENDSTOP_INVERTING false
+    #ifndef Z2_MAX_ENDSTOP_INVERTING
+      #if Z2_USE_ENDSTOP == _XMIN_
+        #define Z2_MAX_ENDSTOP_INVERTING X_MIN_ENDSTOP_INVERTING
+      #elif Z2_USE_ENDSTOP == _XMAX_
+        #define Z2_MAX_ENDSTOP_INVERTING X_MAX_ENDSTOP_INVERTING
+      #elif Z2_USE_ENDSTOP == _YMIN_
+        #define Z2_MAX_ENDSTOP_INVERTING Y_MIN_ENDSTOP_INVERTING
+      #elif Z2_USE_ENDSTOP == _YMAX_
+        #define Z2_MAX_ENDSTOP_INVERTING Y_MAX_ENDSTOP_INVERTING
+      #elif Z2_USE_ENDSTOP == _ZMIN_
+        #define Z2_MAX_ENDSTOP_INVERTING Z_MIN_ENDSTOP_INVERTING
+      #elif Z2_USE_ENDSTOP == _ZMAX_
+        #define Z2_MAX_ENDSTOP_INVERTING Z_MAX_ENDSTOP_INVERTING
+      #else
+        #define Z2_MAX_ENDSTOP_INVERTING false
+      #endif
     #endif
     #ifndef Z2_MAX_PIN
       #if Z2_USE_ENDSTOP == _XMIN_
         #define Z2_MAX_PIN E7_DIAG_PIN
       #endif
     #endif
-    #define Z2_MIN_ENDSTOP_INVERTING false
-  #else
-    #if Z2_USE_ENDSTOP == _XMIN_
-      #define Z2_MIN_ENDSTOP_INVERTING X_MIN_ENDSTOP_INVERTING
-    #elif Z2_USE_ENDSTOP == _XMAX_
-      #define Z2_MIN_ENDSTOP_INVERTING X_MAX_ENDSTOP_INVERTING
-    #elif Z2_USE_ENDSTOP == _YMIN_
-      #define Z2_MIN_ENDSTOP_INVERTING Y_MIN_ENDSTOP_INVERTING
-    #elif Z2_USE_ENDSTOP == _YMAX_
-      #define Z2_MIN_ENDSTOP_INVERTING Y_MAX_ENDSTOP_INVERTING
-    #elif Z2_USE_ENDSTOP == _ZMIN_
-      #define Z2_MIN_ENDSTOP_INVERTING Z_MIN_ENDSTOP_INVERTING
-    #elif Z2_USE_ENDSTOP == _ZMAX_
-      #define Z2_MIN_ENDSTOP_INVERTING Z_MAX_ENDSTOP_INVERTING
-    #else
+    #ifndef Z2_MIN_ENDSTOP_INVERTING
       #define Z2_MIN_ENDSTOP_INVERTING false
     #endif
+  #else
+    #ifndef Z2_MIN_ENDSTOP_INVERTING
+      #if Z2_USE_ENDSTOP == _XMIN_
+        #define Z2_MIN_ENDSTOP_INVERTING X_MIN_ENDSTOP_INVERTING
+      #elif Z2_USE_ENDSTOP == _XMAX_
+        #define Z2_MIN_ENDSTOP_INVERTING X_MAX_ENDSTOP_INVERTING
+      #elif Z2_USE_ENDSTOP == _YMIN_
+        #define Z2_MIN_ENDSTOP_INVERTING Y_MIN_ENDSTOP_INVERTING
+      #elif Z2_USE_ENDSTOP == _YMAX_
+        #define Z2_MIN_ENDSTOP_INVERTING Y_MAX_ENDSTOP_INVERTING
+      #elif Z2_USE_ENDSTOP == _ZMIN_
+        #define Z2_MIN_ENDSTOP_INVERTING Z_MIN_ENDSTOP_INVERTING
+      #elif Z2_USE_ENDSTOP == _ZMAX_
+        #define Z2_MIN_ENDSTOP_INVERTING Z_MAX_ENDSTOP_INVERTING
+      #else
+        #define Z2_MIN_ENDSTOP_INVERTING false
+      #endif
+    #endif
     #ifndef Z2_MIN_PIN
       #if Z2_USE_ENDSTOP == _XMIN_
         #define Z2_MIN_PIN X_MIN_PIN
         #define Z2_MIN_PIN E7_DIAG_PIN
       #endif
     #endif
-    #define Z2_MAX_ENDSTOP_INVERTING false
+    #ifndef Z2_MAX_ENDSTOP_INVERTING
+      #define Z2_MAX_ENDSTOP_INVERTING false
+    #endif
   #endif
 
   #if NUM_Z_STEPPER_DRIVERS >= 3
     #if Z_HOME_DIR > 0
-      #if Z3_USE_ENDSTOP == _XMIN_
-        #define Z3_MAX_ENDSTOP_INVERTING X_MIN_ENDSTOP_INVERTING
-      #elif Z3_USE_ENDSTOP == _XMAX_
-        #define Z3_MAX_ENDSTOP_INVERTING X_MAX_ENDSTOP_INVERTING
-      #elif Z3_USE_ENDSTOP == _YMIN_
-        #define Z3_MAX_ENDSTOP_INVERTING Y_MIN_ENDSTOP_INVERTING
-      #elif Z3_USE_ENDSTOP == _YMAX_
-        #define Z3_MAX_ENDSTOP_INVERTING Y_MAX_ENDSTOP_INVERTING
-      #elif Z3_USE_ENDSTOP == _ZMIN_
-        #define Z3_MAX_ENDSTOP_INVERTING Z_MIN_ENDSTOP_INVERTING
-      #elif Z3_USE_ENDSTOP == _ZMAX_
-        #define Z3_MAX_ENDSTOP_INVERTING Z_MAX_ENDSTOP_INVERTING
-      #else
-        #define Z3_MAX_ENDSTOP_INVERTING false
+      #ifndef Z3_MAX_ENDSTOP_INVERTING
+        #if Z3_USE_ENDSTOP == _XMIN_
+          #define Z3_MAX_ENDSTOP_INVERTING X_MIN_ENDSTOP_INVERTING
+        #elif Z3_USE_ENDSTOP == _XMAX_
+          #define Z3_MAX_ENDSTOP_INVERTING X_MAX_ENDSTOP_INVERTING
+        #elif Z3_USE_ENDSTOP == _YMIN_
+          #define Z3_MAX_ENDSTOP_INVERTING Y_MIN_ENDSTOP_INVERTING
+        #elif Z3_USE_ENDSTOP == _YMAX_
+          #define Z3_MAX_ENDSTOP_INVERTING Y_MAX_ENDSTOP_INVERTING
+        #elif Z3_USE_ENDSTOP == _ZMIN_
+          #define Z3_MAX_ENDSTOP_INVERTING Z_MIN_ENDSTOP_INVERTING
+        #elif Z3_USE_ENDSTOP == _ZMAX_
+          #define Z3_MAX_ENDSTOP_INVERTING Z_MAX_ENDSTOP_INVERTING
+        #else
+          #define Z3_MAX_ENDSTOP_INVERTING false
+        #endif
       #endif
       #ifndef Z3_MAX_PIN
         #if Z3_USE_ENDSTOP == _XMIN_
           #define Z3_MAX_PIN E7_DIAG_PIN
         #endif
       #endif
-      #define Z3_MIN_ENDSTOP_INVERTING false
-    #else
-      #if Z3_USE_ENDSTOP == _XMIN_
-        #define Z3_MIN_ENDSTOP_INVERTING X_MIN_ENDSTOP_INVERTING
-      #elif Z3_USE_ENDSTOP == _XMAX_
-        #define Z3_MIN_ENDSTOP_INVERTING X_MAX_ENDSTOP_INVERTING
-      #elif Z3_USE_ENDSTOP == _YMIN_
-        #define Z3_MIN_ENDSTOP_INVERTING Y_MIN_ENDSTOP_INVERTING
-      #elif Z3_USE_ENDSTOP == _YMAX_
-        #define Z3_MIN_ENDSTOP_INVERTING Y_MAX_ENDSTOP_INVERTING
-      #elif Z3_USE_ENDSTOP == _ZMIN_
-        #define Z3_MIN_ENDSTOP_INVERTING Z_MIN_ENDSTOP_INVERTING
-      #elif Z3_USE_ENDSTOP == _ZMAX_
-        #define Z3_MIN_ENDSTOP_INVERTING Z_MAX_ENDSTOP_INVERTING
-      #else
+      #ifndef Z3_MIN_ENDSTOP_INVERTING
         #define Z3_MIN_ENDSTOP_INVERTING false
       #endif
+    #else
+      #ifndef Z3_MIN_ENDSTOP_INVERTING
+        #if Z3_USE_ENDSTOP == _XMIN_
+          #define Z3_MIN_ENDSTOP_INVERTING X_MIN_ENDSTOP_INVERTING
+        #elif Z3_USE_ENDSTOP == _XMAX_
+          #define Z3_MIN_ENDSTOP_INVERTING X_MAX_ENDSTOP_INVERTING
+        #elif Z3_USE_ENDSTOP == _YMIN_
+          #define Z3_MIN_ENDSTOP_INVERTING Y_MIN_ENDSTOP_INVERTING
+        #elif Z3_USE_ENDSTOP == _YMAX_
+          #define Z3_MIN_ENDSTOP_INVERTING Y_MAX_ENDSTOP_INVERTING
+        #elif Z3_USE_ENDSTOP == _ZMIN_
+          #define Z3_MIN_ENDSTOP_INVERTING Z_MIN_ENDSTOP_INVERTING
+        #elif Z3_USE_ENDSTOP == _ZMAX_
+          #define Z3_MIN_ENDSTOP_INVERTING Z_MAX_ENDSTOP_INVERTING
+        #else
+          #define Z3_MIN_ENDSTOP_INVERTING false
+        #endif
+      #endif
       #ifndef Z3_MIN_PIN
         #if Z3_USE_ENDSTOP == _XMIN_
           #define Z3_MIN_PIN X_MIN_PIN
           #define Z3_MIN_PIN E7_DIAG_PIN
         #endif
       #endif
-      #define Z3_MAX_ENDSTOP_INVERTING false
+      #ifndef Z3_MAX_ENDSTOP_INVERTING
+        #define Z3_MAX_ENDSTOP_INVERTING false
+      #endif
     #endif
   #endif
 
   #if NUM_Z_STEPPER_DRIVERS >= 4
     #if Z_HOME_DIR > 0
-      #if Z4_USE_ENDSTOP == _XMIN_
-        #define Z4_MAX_ENDSTOP_INVERTING X_MIN_ENDSTOP_INVERTING
-      #elif Z4_USE_ENDSTOP == _XMAX_
-        #define Z4_MAX_ENDSTOP_INVERTING X_MAX_ENDSTOP_INVERTING
-      #elif Z4_USE_ENDSTOP == _YMIN_
-        #define Z4_MAX_ENDSTOP_INVERTING Y_MIN_ENDSTOP_INVERTING
-      #elif Z4_USE_ENDSTOP == _YMAX_
-        #define Z4_MAX_ENDSTOP_INVERTING Y_MAX_ENDSTOP_INVERTING
-      #elif Z4_USE_ENDSTOP == _ZMIN_
-        #define Z4_MAX_ENDSTOP_INVERTING Z_MIN_ENDSTOP_INVERTING
-      #elif Z4_USE_ENDSTOP == _ZMAX_
-        #define Z4_MAX_ENDSTOP_INVERTING Z_MAX_ENDSTOP_INVERTING
-      #else
-        #define Z4_MAX_ENDSTOP_INVERTING false
+      #ifndef Z4_MAX_ENDSTOP_INVERTING
+        #if Z4_USE_ENDSTOP == _XMIN_
+          #define Z4_MAX_ENDSTOP_INVERTING X_MIN_ENDSTOP_INVERTING
+        #elif Z4_USE_ENDSTOP == _XMAX_
+          #define Z4_MAX_ENDSTOP_INVERTING X_MAX_ENDSTOP_INVERTING
+        #elif Z4_USE_ENDSTOP == _YMIN_
+          #define Z4_MAX_ENDSTOP_INVERTING Y_MIN_ENDSTOP_INVERTING
+        #elif Z4_USE_ENDSTOP == _YMAX_
+          #define Z4_MAX_ENDSTOP_INVERTING Y_MAX_ENDSTOP_INVERTING
+        #elif Z4_USE_ENDSTOP == _ZMIN_
+          #define Z4_MAX_ENDSTOP_INVERTING Z_MIN_ENDSTOP_INVERTING
+        #elif Z4_USE_ENDSTOP == _ZMAX_
+          #define Z4_MAX_ENDSTOP_INVERTING Z_MAX_ENDSTOP_INVERTING
+        #else
+          #define Z4_MAX_ENDSTOP_INVERTING false
+        #endif
       #endif
       #ifndef Z4_MAX_PIN
         #if Z4_USE_ENDSTOP == _XMIN_
           #define Z4_MAX_PIN E7_DIAG_PIN
         #endif
       #endif
-      #define Z4_MIN_ENDSTOP_INVERTING false
-    #else
-      #if Z4_USE_ENDSTOP == _XMIN_
-        #define Z4_MIN_ENDSTOP_INVERTING X_MIN_ENDSTOP_INVERTING
-      #elif Z4_USE_ENDSTOP == _XMAX_
-        #define Z4_MIN_ENDSTOP_INVERTING X_MAX_ENDSTOP_INVERTING
-      #elif Z4_USE_ENDSTOP == _YMIN_
-        #define Z4_MIN_ENDSTOP_INVERTING Y_MIN_ENDSTOP_INVERTING
-      #elif Z4_USE_ENDSTOP == _YMAX_
-        #define Z4_MIN_ENDSTOP_INVERTING Y_MAX_ENDSTOP_INVERTING
-      #elif Z4_USE_ENDSTOP == _ZMIN_
-        #define Z4_MIN_ENDSTOP_INVERTING Z_MIN_ENDSTOP_INVERTING
-      #elif Z4_USE_ENDSTOP == _ZMAX_
-        #define Z4_MIN_ENDSTOP_INVERTING Z_MAX_ENDSTOP_INVERTING
-      #else
+      #ifndef Z4_MIN_ENDSTOP_INVERTING
         #define Z4_MIN_ENDSTOP_INVERTING false
       #endif
+    #else
+      #ifndef Z4_MIN_ENDSTOP_INVERTING
+        #if Z4_USE_ENDSTOP == _XMIN_
+          #define Z4_MIN_ENDSTOP_INVERTING X_MIN_ENDSTOP_INVERTING
+        #elif Z4_USE_ENDSTOP == _XMAX_
+          #define Z4_MIN_ENDSTOP_INVERTING X_MAX_ENDSTOP_INVERTING
+        #elif Z4_USE_ENDSTOP == _YMIN_
+          #define Z4_MIN_ENDSTOP_INVERTING Y_MIN_ENDSTOP_INVERTING
+        #elif Z4_USE_ENDSTOP == _YMAX_
+          #define Z4_MIN_ENDSTOP_INVERTING Y_MAX_ENDSTOP_INVERTING
+        #elif Z4_USE_ENDSTOP == _ZMIN_
+          #define Z4_MIN_ENDSTOP_INVERTING Z_MIN_ENDSTOP_INVERTING
+        #elif Z4_USE_ENDSTOP == _ZMAX_
+          #define Z4_MIN_ENDSTOP_INVERTING Z_MAX_ENDSTOP_INVERTING
+        #else
+          #define Z4_MIN_ENDSTOP_INVERTING false
+        #endif
+      #endif
       #ifndef Z4_MIN_PIN
         #if Z4_USE_ENDSTOP == _XMIN_
           #define Z4_MIN_PIN X_MIN_PIN
           #define Z4_MIN_PIN E7_DIAG_PIN
         #endif
       #endif
-      #define Z4_MAX_ENDSTOP_INVERTING false
+      #ifndef Z4_MAX_ENDSTOP_INVERTING
+        #define Z4_MAX_ENDSTOP_INVERTING false
+      #endif
     #endif
   #endif