Allow disabling of G12 patterns

Marlin/Configuration.h

@@ -2409,23 +2409,31 @@
 //#define NOZZLE_CLEAN_FEATURE
 
 #if ENABLED(NOZZLE_CLEAN_FEATURE)
-  // Default number of pattern repetitions
-  #define NOZZLE_CLEAN_STROKES  12
+  #define NOZZLE_CLEAN_PATTERN_LINE     // Provide 'G12 P0' - a simple linear cleaning pattern
+  #define NOZZLE_CLEAN_PATTERN_ZIGZAG   // Provide 'G12 P1' - a zigzag cleaning pattern
+  #define NOZZLE_CLEAN_PATTERN_CIRCLE   // Provide 'G12 P2' - a circular cleaning pattern
 
-  // Default number of triangles
-  #define NOZZLE_CLEAN_TRIANGLES  3
+  // Default pattern to use when 'P' is not provided to G12. One of the enabled options above.
+  #define NOZZLE_CLEAN_DEFAULT_PATTERN 0
+
+  #if ENABLED(NOZZLE_CLEAN_PATTERN_LINE)
+    #define NOZZLE_CLEAN_STROKES   12   // Default number of pattern repetitions
+  #endif
+
+  #if ENABLED(NOZZLE_CLEAN_PATTERN_ZIGZAG)
+    #define NOZZLE_CLEAN_TRIANGLES  3   // Default number of triangles
+  #endif
 
   // Specify positions for each tool as { { X, Y, Z }, { X, Y, Z } }
   // Dual hotend system may use { {  -20, (Y_BED_SIZE / 2), (Z_MIN_POS + 1) },  {  420, (Y_BED_SIZE / 2), (Z_MIN_POS + 1) }}
   #define NOZZLE_CLEAN_START_POINT { {  30, 30, (Z_MIN_POS + 1) } }
   #define NOZZLE_CLEAN_END_POINT   { { 100, 60, (Z_MIN_POS + 1) } }
 
-  // Circular pattern radius
-  #define NOZZLE_CLEAN_CIRCLE_RADIUS 6.5
-  // Circular pattern circle fragments number
-  #define NOZZLE_CLEAN_CIRCLE_FN 10
-  // Middle point of circle
-  #define NOZZLE_CLEAN_CIRCLE_MIDDLE NOZZLE_CLEAN_START_POINT
+  #if ENABLED(NOZZLE_CLEAN_PATTERN_CIRCLE)
+    #define NOZZLE_CLEAN_CIRCLE_RADIUS 6.5                      // (mm) Circular pattern radius
+    #define NOZZLE_CLEAN_CIRCLE_FN 10                           // Circular pattern circle number of segments
+    #define NOZZLE_CLEAN_CIRCLE_MIDDLE NOZZLE_CLEAN_START_POINT // Middle point of circle
+  #endif
 
   // Move the nozzle to the initial position after cleaning
   #define NOZZLE_CLEAN_GOBACK

Marlin/src/gcode/feature/clean/G12.cpp

@@ -57,10 +57,16 @@ void GcodeSuite::G12() {
     }
   #endif
 
-  const uint8_t pattern = parser.ushortval('P', 0),
-                strokes = parser.ushortval('S', NOZZLE_CLEAN_STROKES),
-                objects = parser.ushortval('T', NOZZLE_CLEAN_TRIANGLES);
-  const float radius = parser.linearval('R', NOZZLE_CLEAN_CIRCLE_RADIUS);
+  const uint8_t pattern = (
+    #if COUNT_ENABLED(NOZZLE_CLEAN_PATTERN_LINE, NOZZLE_CLEAN_PATTERN_ZIGZAG, NOZZLE_CLEAN_PATTERN_CIRCLE) > 1
+      parser.ushortval('P', NOZZLE_CLEAN_DEFAULT_PATTERN)
+    #else
+      NOZZLE_CLEAN_DEFAULT_PATTERN
+    #endif
+  );
+  const uint8_t strokes = TERN0(NOZZLE_CLEAN_PATTERN_LINEAR, parser.ushortval('S', NOZZLE_CLEAN_STROKES)),
+                objects = TERN0(NOZZLE_CLEAN_PATTERN_ZIGZAG, parser.ushortval('T', NOZZLE_CLEAN_TRIANGLES));
+  const float radius = TERN0(NOZZLE_CLEAN_PATTERN_CIRCLE, parser.linearval('R', NOZZLE_CLEAN_CIRCLE_RADIUS));
 
   const bool seenxyz = parser.seen("XYZ");
   const uint8_t cleans =  (!seenxyz || parser.boolval('X') ? _BV(X_AXIS) : 0)

Marlin/src/inc/SanityCheck.h

@@ -4423,6 +4423,21 @@ static_assert(_PLUS_TEST(4), "HOMING_FEEDRATE_MM_M values must be positive.");
   #undef _CLEAN_ASSERT
 #endif
 
+/**
+ * Sanity check nozzle cleaning pattern settings
+ */
+#if ENABLED(NOZZLE_CLEAN_FEATURE)
+  #if NONE(NOZZLE_CLEAN_PATTERN_LINE, NOZZLE_CLEAN_PATTERN_ZIGZAG, NOZZLE_CLEAN_PATTERN_CIRCLE)
+    #error "NOZZLE_CLEAN_FEATURE requires at least one of NOZZLE_CLEAN_PATTERN_LINE, NOZZLE_CLEAN_PATTERN_ZIGZAG, and/or NOZZLE_CLEAN_PATTERN_CIRCLE."
+  #elif NOZZLE_CLEAN_DEFAULT_PATTERN == 0 && DISABLED(NOZZLE_CLEAN_PATTERN_LINE)
+    #error "NOZZLE_CLEAN_DEFAULT_PATTERN 0 (LINE) is not available. Enable NOZZLE_CLEAN_PATTERN_LINE or set a different NOZZLE_CLEAN_DEFAULT_PATTERN."
+  #elif NOZZLE_CLEAN_DEFAULT_PATTERN == 1 && DISABLED(NOZZLE_CLEAN_PATTERN_ZIGZAG)
+    #error "NOZZLE_CLEAN_DEFAULT_PATTERN 1 (ZIGZAG) is not available. Enable NOZZLE_CLEAN_PATTERN_ZIGZAG or set a different NOZZLE_CLEAN_DEFAULT_PATTERN."
+  #elif NOZZLE_CLEAN_DEFAULT_PATTERN == 2 && DISABLED(NOZZLE_CLEAN_PATTERN_CIRCLE)
+    #error "NOZZLE_CLEAN_DEFAULT_PATTERN 2 (CIRCLE) is not available. Enable NOZZLE_CLEAN_PATTERN_CIRCLE or set a different NOZZLE_CLEAN_DEFAULT_PATTERN."
+  #endif
+#endif
+
 /**
  * Sanity check for MIXING_EXTRUDER & DISTINCT_E_FACTORS these are not compatible
  */