Sanity check 3-point defines

Fixes #17870
5 years ago · 86c1125380
1 changed files with 5 additions and 1 deletions
--- a/Marlin/src/inc/Conditionals_post.h
+++ b/Marlin/src/inc/Conditionals_post.h
@ -2338,9 +2338,13 @@
  #undef MESH_MAX_Y
 #endif

-#if defined(PROBE_PT_1_X) && defined(PROBE_PT_2_X) && defined(PROBE_PT_3_X) && defined(PROBE_PT_1_Y) && defined(PROBE_PT_2_Y) && defined(PROBE_PT_3_Y)
+#define _POINT_COUNT (defined(PROBE_PT_1_X) + defined(PROBE_PT_2_X) + defined(PROBE_PT_3_X) + defined(PROBE_PT_1_Y) + defined(PROBE_PT_2_Y) + defined(PROBE_PT_3_Y))
+#if _POINT_COUNT == 6
  #define HAS_FIXED_3POINT 1
+#elif _POINT_COUNT > 0
+  #error "For 3-Point Leveling all XY points must be defined (or none for the defaults)."
 #endif
+#undef _POINT_COUNT

 /**
 * Buzzer/Speaker