[2.0.x] Tweaks and additions for MAX7219 (#11034)

Marlin/src/gcode/feature/leds/M7219.cpp

@@ -0,0 +1,60 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "../../../inc/MarlinConfigPre.h"
+
+#if ENABLED(MAX7219_GCODE)
+
+#include "../../gcode.h"
+#include "../../../feature/Max7219_Debug_LEDs.h"
+
+/**
+ * M7219: Control the Max7219 LED matrix
+ * 
+ *  I         - Initialize (clear) the matrix
+ *  C<column> - Set a column to the 8-bit value V
+ *  R<row>    - Set a row to the 8-bit value V
+ *  X<pos>    - X position of an LED to set or toggle
+ *  Y<pos>    - Y position of an LED to set or toggle
+ *  V<value>  - The 8-bit value or on/off state to set
+ */
+void GcodeSuite::M7219() {
+  if (parser.seen('I'))
+    for (uint8_t r = 0; r < 8; r++) Max7219_Set_Row(r, 0);
+  else if (parser.seenval('R')) {
+    const uint8_t r = parser.value_int();
+    Max7219_Set_Row(r, parser.byteval('V'));
+  }
+  else if (parser.seenval('C')) {
+    const uint8_t c = parser.value_int();
+    Max7219_Set_Column(c, parser.byteval('V'));
+  }
+  else if (parser.seenval('X') || parser.seenval('Y')) {
+    const uint8_t x = parser.byteval('X'), y = parser.byteval('Y');
+    if (parser.seenval('V'))
+      Max7219_LED_Set(x, y, parser.boolval('V'));
+    else
+      Max7219_LED_Toggle(x, y);
+  }
+}
+
+#endif // MAX7219_GCODE

Marlin/src/gcode/gcode.cpp

@@ -599,6 +599,10 @@ void GcodeSuite::process_parsed_command(
         case 702: M702(); break;                                  // M702: Unload Filament
       #endif
 
+      #if ENABLED(MAX7219_GCODE)
+        case 7219: M7219(); break;                                // M7219: Set LEDs, columns, and rows
+      #endif
+
       #if ENABLED(LIN_ADVANCE)
         case 900: M900(); break;                                  // M900: Set advance K factor.
       #endif

Marlin/src/gcode/gcode.h

@@ -727,6 +727,10 @@ private:
     static void M702();
   #endif
 
+  #if ENABLED(MAX7219_GCODE)
+    static void M7219();
+  #endif
+
   #if HAS_BED_PROBE
     static void M851();
   #endif