Patch ABL G29 loop

Followup to e3ddf6e81a
5 years ago · ad28da7eb4
1 changed files with 3 additions and 3 deletions
--- a/Marlin/src/gcode/bedlevel/abl/G29.cpp
+++ b/Marlin/src/gcode/bedlevel/abl/G29.cpp
@ -684,7 +684,7 @@ G29_TYPE GcodeSuite::G29() {
      // Outer loop is Y with PROBE_Y_FIRST disabled
      for (PR_OUTER_VAR = 0; PR_OUTER_VAR < PR_OUTER_END && !isnan(measured_z); PR_OUTER_VAR++) {

-        int8_t inStart, inStop, inInc;
+        uint8_t inStart, inStop, inInc;

        if (zig) { // away from origin
          inStart = 0;
@ -693,8 +693,8 @@ G29_TYPE GcodeSuite::G29() {
        }
        else {     // towards origin
          inStart = PR_INNER_END - 1;
-          inStop = -1;
-          inInc = -1;
+          inStop = 0xFF;
+          inInc = 0xFF;
        }

        zig ^= true; // zag