[2.0] Fix up G33, LPC1768 + SDCARD_SORT_ALPHA (#8250)

* Update Conditionals_post.h

* Add a cast to round() to convert to a unsigned int

Add's a cast to round() so that it will compile properly. round() returns a float which must be cast to a integer for the following % operation. Use a unsigned int as a negative index to an array is wrong. Should never be more than 255 points allowing us to use a 8 bit cast.

* Update G33.cpp

Marlin/src/gcode/calibrate/G33.cpp

@@ -199,31 +199,24 @@ static float probe_G33_points(float z_at_pt[NPP + 1], const int8_t probe_points,
         for (int8_t circle = -offset; circle <= offset; circle++) {
           const float a = RADIANS(210 + (360 / NPP) *  (axis - 1)),
                       r = delta_calibration_radius * (1 + 0.1 * (zig_zag ? circle : - circle)),
-                      interpol = fmod(axis, 1);
+                      interpol = FMOD(axis, 1);
+          const float z_temp =
             #if ENABLED(PROBE_MANUALLY)
-             float z_temp = lcd_probe_pt(cos(a) * r, sin(a) * r);
+              lcd_probe_pt(cos(a) * r, sin(a) * r)
             #else
-            float z_temp = probe_pt(cos(a) * r + dx, sin(a) * r + dy, stow_after_each, 1);
+              probe_pt(cos(a) * r + dx, sin(a) * r + dy, stow_after_each, 1)
             #endif
+          ;
           // split probe point to neighbouring calibration points
-          z_at_pt[round(axis - interpol + NPP - 1) % NPP + 1] += z_temp * sq(cos(RADIANS(interpol * 90)));
-          z_at_pt[round(axis - interpol) % NPP + 1] += z_temp * sq(sin(RADIANS(interpol * 90)));
+          z_at_pt[uint8_t(round(axis - interpol + NPP - 1)) % NPP + 1] += z_temp * sq(cos(RADIANS(interpol * 90)));
+          z_at_pt[uint8_t(round(axis - interpol))           % NPP + 1] += z_temp * sq(sin(RADIANS(interpol * 90)));
         }
         zig_zag = !zig_zag;
       }
       if (_7p_intermed_points)
-        LOOP_CAL_RAD(axis) {
-/*
-        // average intermediate points to towers and opposites - only required with _7P_STEP >= 2
-          for (int8_t i = 1; i < _7P_STEP; i++) {
-            const float interpol = i * (1.0 / _7P_STEP);
-            z_at_pt[axis] += (z_at_pt[(axis + NPP - i - 1) % NPP + 1]
-                             + z_at_pt[axis + i]) * sq(cos(RADIANS(interpol * 90)));
-          }
-*/
+        LOOP_CAL_RAD(axis)
           z_at_pt[axis] /= _7P_STEP / steps;
     }
-    }
 
 
     float S1 = z_at_pt[CEN],

Marlin/src/inc/Conditionals_post.h

@@ -1079,10 +1079,6 @@
   #undef MOTOR_CURRENT
 #endif
 
-#if ENABLED(SDCARD_SORT_ALPHA)
-  #define HAS_FOLDER_SORTING (FOLDER_SORTING || ENABLED(SDSORT_GCODE))
-#endif
-
 // Updated G92 behavior shifts the workspace
 #define HAS_POSITION_SHIFT DISABLED(NO_WORKSPACE_OFFSETS)
 // The home offset also shifts the coordinate space
@@ -1197,4 +1193,9 @@
   #endif
 #endif
 
+// needs to be here so that we catch the above changes to our defines
+#if ENABLED(SDCARD_SORT_ALPHA)
+  #define HAS_FOLDER_SORTING (FOLDER_SORTING || ENABLED(SDSORT_GCODE))
+#endif
+
 #endif // CONDITIONALS_POST_H