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

Marlin/Configuration_adv.h

@@ -1662,27 +1662,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 //#define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/Marlin.cpp

@@ -536,7 +536,7 @@ void idle(
 ) {
   #if ENABLED(MAX7219_DEBUG)
     Max7219_idle_tasks();
-  #endif  // MAX7219_DEBUG
+  #endif
 
   lcd_update();
 

Marlin/src/config/default/Configuration_adv.h

@@ -1662,27 +1662,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 //#define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/config/examples/AlephObjects/TAZ4/Configuration_adv.h

@@ -1662,27 +1662,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 //#define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/config/examples/Anet/A6/Configuration_adv.h

@@ -1662,27 +1662,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 //#define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/config/examples/Anet/A8/Configuration_adv.h

@@ -1662,27 +1662,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 //#define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/config/examples/Azteeg/X5GT/Configuration_adv.h

@@ -1662,27 +1662,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 //#define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/config/examples/BIBO/TouchX/cyclops/Configuration_adv.h

@@ -1662,27 +1662,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 //#define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/config/examples/BIBO/TouchX/default/Configuration_adv.h

@@ -1662,27 +1662,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 //#define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/config/examples/BQ/Hephestos/Configuration_adv.h

@@ -1662,27 +1662,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 //#define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/config/examples/BQ/Hephestos_2/Configuration_adv.h

@@ -1670,27 +1670,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 //#define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/config/examples/BQ/WITBOX/Configuration_adv.h

@@ -1662,27 +1662,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 //#define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/config/examples/Cartesio/Configuration_adv.h

@@ -1662,27 +1662,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 //#define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/config/examples/Creality/CR-10/Configuration_adv.h

@@ -1665,27 +1665,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 //#define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/config/examples/Creality/CR-10S/Configuration_adv.h

@@ -1662,27 +1662,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 //#define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/config/examples/Creality/CR-10mini/Configuration_adv.h

@@ -1662,27 +1662,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 //#define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/config/examples/Creality/CR-8/Configuration_adv.h

@@ -1662,27 +1662,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 //#define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/config/examples/Creality/Ender-2/Configuration_adv.h

@@ -1662,27 +1662,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 //#define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/config/examples/Creality/Ender-3/Configuration_adv.h

@@ -1662,27 +1662,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 //#define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/config/examples/Creality/Ender-4/Configuration_adv.h

@@ -1662,27 +1662,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 //#define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/config/examples/Felix/Configuration_adv.h

@@ -1662,27 +1662,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 //#define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/config/examples/FolgerTech/i3-2020/Configuration_adv.h

@@ -1662,11 +1662,8 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 #define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
@@ -1682,15 +1679,19 @@
 //#define MAX7219_DIN_PIN  P2_13 // for RAMPS E1 on Re-ARM  E1_DIR_PIN     P2_13
 //#define MAX7219_LOAD_PIN P2_08 // for RAMPS E1 on Re-ARM  E1_STEP_PIN    P2_08
 
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
+
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/config/examples/Geeetech/Prusa i3 Pro C/Configuration_adv.h

@@ -1662,27 +1662,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 //#define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/config/examples/Geeetech/Prusa i3 Pro W/Configuration_adv.h

@@ -1662,27 +1662,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 //#define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/config/examples/Infitary/i3-M508/Configuration_adv.h

@@ -1662,27 +1662,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 //#define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/config/examples/JGAurora/A5/Configuration_adv.h

@@ -1662,27 +1662,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 //#define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/config/examples/MakerParts/Configuration_adv.h

@@ -1662,27 +1662,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 //#define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/config/examples/Malyan/M150/Configuration_adv.h

@@ -1662,27 +1662,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 //#define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/config/examples/Malyan/M200/Configuration_adv.h

@@ -1662,27 +1662,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 //#define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/config/examples/Micromake/C1/enhanced/Configuration_adv.h

@@ -1662,27 +1662,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 //#define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/config/examples/Mks/Sbase/Configuration_adv.h

@@ -1670,27 +1670,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 //#define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/config/examples/RigidBot/Configuration_adv.h

@@ -1662,27 +1662,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 //#define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/config/examples/SCARA/Configuration_adv.h

@@ -1662,27 +1662,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 //#define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/config/examples/Sanguinololu/Configuration_adv.h

@@ -1662,27 +1662,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 //#define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/config/examples/TheBorg/Configuration_adv.h

@@ -1663,27 +1663,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 //#define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/config/examples/TinyBoy2/Configuration_adv.h

@@ -1662,27 +1662,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 //#define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/config/examples/UltiMachine/Archim2/Configuration_adv.h

@@ -1662,27 +1662,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 //#define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/config/examples/Velleman/K8200/Configuration_adv.h

@@ -1665,27 +1665,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 //#define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/config/examples/Velleman/K8400/Configuration_adv.h

@@ -1662,27 +1662,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 //#define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/config/examples/Wanhao/Duplicator 6/Configuration_adv.h

@@ -1664,27 +1664,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 //#define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/config/examples/delta/FLSUN/auto_calibrate/Configuration_adv.h

@@ -1664,27 +1664,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 //#define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/config/examples/delta/FLSUN/kossel/Configuration_adv.h

@@ -1664,27 +1664,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 //#define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/config/examples/delta/FLSUN/kossel_mini/Configuration_adv.h

@@ -1664,27 +1664,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 //#define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/config/examples/delta/generic/Configuration_adv.h

@@ -1664,27 +1664,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 //#define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/config/examples/delta/kossel_mini/Configuration_adv.h

@@ -1664,27 +1664,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 //#define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/config/examples/delta/kossel_pro/Configuration_adv.h

@@ -1669,27 +1669,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 //#define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/config/examples/delta/kossel_xl/Configuration_adv.h

@@ -1664,27 +1664,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 //#define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/config/examples/gCreate/gMax1.5+/Configuration_adv.h

@@ -1662,27 +1662,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 #define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/config/examples/makibox/Configuration_adv.h

@@ -1662,27 +1662,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 //#define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/config/examples/tvrrug/Round2/Configuration_adv.h

@@ -1662,27 +1662,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 //#define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/config/examples/wt150/Configuration_adv.h

@@ -1663,27 +1663,28 @@
 /**
  * MAX7219 Debug Matrix
  *
- * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip, which can be used as a status
- * display. Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
- *
- * Fully assembled MAX7219 boards can be found on the internet for under $2(US).
- * For example, see https://www.ebay.com/sch/i.html?_nkw=332349290049
+ * Add support for a low-cost 8x8 LED Matrix based on the Max7219 chip as a realtime status display.
+ * Requires 3 signal wires. Some useful debug options are included to demonstrate its usage.
  */
 //#define MAX7219_DEBUG
 #if ENABLED(MAX7219_DEBUG)
-  #define MAX7219_CLK_PIN   64  // 77 on Re-ARM       // Configuration of the 3 pins to control the display
-  #define MAX7219_DIN_PIN   57  // 78 on Re-ARM
-  #define MAX7219_LOAD_PIN  44  // 79 on Re-ARM
+  #define MAX7219_CLK_PIN   64
+  #define MAX7219_DIN_PIN   57
+  #define MAX7219_LOAD_PIN  44
+
+  //#define MAX7219_GCODE       // Add the M7219 G-code to control the LED matrix
+  #define MAX7219_INIT_TEST     // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_ROTATE     0  // Rotate the display clockwise (in multiples of +/- 90°)
 
   /**
    * Sample debug features
    * If you add more debug displays, be careful to avoid conflicts!
    */
   #define MAX7219_DEBUG_PRINTER_ALIVE    // Blink corner LED of 8x8 matrix to show that the firmware is functioning
-  #define MAX7219_DEBUG_STEPPER_HEAD  3  // Show the stepper queue head position on this and the next LED matrix row
-  #define MAX7219_DEBUG_STEPPER_TAIL  5  // Show the stepper queue tail position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_HEAD  3  // Show the planner queue head position on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_TAIL  5  // Show the planner queue tail position on this and the next LED matrix row
 
-  #define MAX7219_DEBUG_STEPPER_QUEUE 0  // Show the current stepper queue depth on this and the next LED matrix row
+  #define MAX7219_DEBUG_PLANNER_QUEUE 0  // Show the current planner queue depth on this and the next LED matrix row
                                          // If you experience stuttering, reboots, etc. this option can reveal how
                                          // tweaks made to the configuration are affecting the printer in real-time.
 #endif

Marlin/src/feature/Max7219_Debug_LEDs.cpp

@@ -22,11 +22,9 @@
 
 /**
  * This module is off by default, but can be enabled to facilitate the display of
- * extra debug information during code development. It assumes the existence of a
- * Max7219 LED Matrix. A suitable device can be obtained on eBay similar to this:
- * http://www.ebay.com/itm/191781645249 for under $2.00 including shipping.
+ * extra debug information during code development.
  *
- * Just connect up +5v and GND to give it power, then connect up the pins assigned
+ * Just connect up 5V and GND to give it power, then connect up the pins assigned
  * in Configuration_adv.h. For example, on the Re-ARM you could use:
  *
  *   #define MAX7219_CLK_PIN   77
@@ -35,26 +33,14 @@
  *
  * Max7219_init() is called automatically at startup, and then there are a number of
  * support functions available to control the LEDs in the 8x8 grid.
- *
- * void Max7219_init();
- * void Max7219_PutByte(uint8_t data);
- * void Max7219(uint8_t reg, uint8_t data);
- * void Max7219_LED_On(uint8_t col, uint8_t row);
- * void Max7219_LED_Off(uint8_t col, uint8_t row);
- * void Max7219_LED_Toggle(uint8_t col, uint8_t row);
- * void Max7219_Clear_Row(uint8_t row);
- * void Max7219_Clear_Column(uint8_t col);
- * void Max7219_Set_Row(uint8_t row, uint8_t val);
- * void Max7219_Set_2_Rows(uint8_t row, uint16_t val);
- * void Max7219_Set_4_Rows(uint8_t row, uint32_t val);
- * void Max7219_Set_Column(uint8_t col, uint8_t val);
- * void Max7219_idle_tasks();
  */
 
-#include "../inc/MarlinConfig.h"
+#include "../inc/MarlinConfigPre.h"
 
 #if ENABLED(MAX7219_DEBUG)
 
+#define MAX7219_ERRORS // Disable to save 406 bytes of Program Memory
+
 #include "Max7219_Debug_LEDs.h"
 
 #include "../module/planner.h"
@@ -64,6 +50,38 @@
 
 static uint8_t LEDs[8] = { 0 };
 
+#ifndef MAX7219_ROTATE
+  #define MAX7219_ROTATE 0
+#endif
+#define _ROT ((MAX7219_ROTATE + 360) % 360)
+#if _ROT == 0
+  #define _ROW_ y
+  #define _COL_ x
+  #define XOR_7219(x, y) LEDs[y] ^= _BV(7 - x)
+  #define BIT_7219(x, y) TEST(LEDs[y], 7 - x)
+  #define SEND_7219(R,V) Max7219(max7219_reg_digit0 + R, V)
+#elif _ROT == 90
+  #define _ROW_ x
+  #define _COL_ y
+  #define XOR_7219(x, y) LEDs[x] ^= _BV(y)
+  #define BIT_7219(x, y) TEST(LEDs[x], y)
+  #define SEND_7219(R,V) Max7219(max7219_reg_digit0 + R, V)
+#elif _ROT == 180
+  #define _ROW_ y
+  #define _COL_ x
+  #define XOR_7219(x, y) LEDs[y] ^= _BV(x)
+  #define BIT_7219(x, y) TEST(LEDs[y], x)
+  #define SEND_7219(R,V) Max7219(max7219_reg_digit7 - R, V)
+#elif _ROT == 270
+  #define _ROW_ x
+  #define _COL_ y
+  #define XOR_7219(x, y) LEDs[x] ^= _BV(7 - y)
+  #define BIT_7219(x, y) TEST(LEDs[x], 7 - y)
+  #define SEND_7219(R,V) Max7219(max7219_reg_digit7 - R, V)
+#else
+  #error "MAX7219_ROTATE must be a multiple of +/- 90°."
+#endif
+
 #ifdef CPU_32_BIT
   // Approximate a 1µs delay on 32-bit ARM
   #define SIG_DELAY() DELAY_US(1)
@@ -73,6 +91,9 @@ static uint8_t LEDs[8] = { 0 };
 #endif
 
 void Max7219_PutByte(uint8_t data) {
+  #ifndef CPU_32_BIT
+    CRITICAL_SECTION_START;
+  #endif
   for (uint8_t i = 8; i--;) {
     SIG_DELAY();
     WRITE(MAX7219_CLK_PIN, LOW);       // tick
@@ -83,10 +104,16 @@ void Max7219_PutByte(uint8_t data) {
     SIG_DELAY();
     data <<= 1;
   }
+  #ifndef CPU_32_BIT
+    CRITICAL_SECTION_END;
+  #endif
 }
 
 void Max7219(const uint8_t reg, const uint8_t data) {
   SIG_DELAY();
+  #ifndef CPU_32_BIT
+    CRITICAL_SECTION_START;
+  #endif
   WRITE(MAX7219_LOAD_PIN, LOW);  // begin
   SIG_DELAY();
   Max7219_PutByte(reg);          // specify register
@@ -96,125 +123,168 @@ void Max7219(const uint8_t reg, const uint8_t data) {
   WRITE(MAX7219_LOAD_PIN, LOW);  // and tell the chip to load the data
   SIG_DELAY();
   WRITE(MAX7219_LOAD_PIN, HIGH);
+  #ifndef CPU_32_BIT
+    CRITICAL_SECTION_END;
+  #endif
   SIG_DELAY();
 }
 
-void Max7219_LED_Set(const uint8_t col, const uint8_t row, const bool on) {
-  if (row > 7 || col > 7) {
-    SERIAL_ECHOPAIR("??? Max7219_LED_Set(", (int)row);
-    SERIAL_ECHOPAIR(",", (int)col);
-    SERIAL_ECHOLNPGM(")");
-    return;
+#if ENABLED(MAX7219_NUMERIC)
+
+  // Draw an integer with optional leading zeros and optional decimal point
+  void Max7219_Print(const uint8_t start, int16_t value, uint8_t size, const bool leadzero=false, bool dec=false) {
+    constexpr uint8_t led_numeral[10] = { 0x7E, 0x60, 0x6D, 0x79, 0x63, 0x5B, 0x5F, 0x70, 0x7F, 0x7A },
+                      led_decimal = 0x80, led_minus = 0x01;
+
+    bool blank = false, neg = value < 0;
+    if (neg) value *= -1;
+    while (size--) {
+      const bool minus = neg && blank;
+      if (minus) neg = false;
+      Max7219(
+        max7219_reg_digit0 + start + size,
+        minus ? led_minus : blank ? 0x00 : led_numeral[value % 10] | (dec ? led_decimal : 0x00)
+      );
+      value /= 10;
+      if (!value && !leadzero) blank = true;
+      dec = false;
+    }
   }
-  if (TEST(LEDs[col], row) == on) return; // if LED is already on/off, leave alone
-  if (on) SBI(LEDs[col], row); else CBI(LEDs[col], row);
-  Max7219(8 - col, LEDs[col]);
-}
 
-void Max7219_LED_On(const uint8_t col, const uint8_t row) {
-  if (row > 7 || col > 7) {
-    SERIAL_ECHOPAIR("??? Max7219_LED_On(", (int)col);
-    SERIAL_ECHOPAIR(",", (int)row);
-    SERIAL_ECHOLNPGM(")");
-    return;
+  // Draw a float with a decimal point and optional digits
+  void Max7219_Print(const uint8_t start, const float value, const uint8_t pre_size, const uint8_t post_size, const bool leadzero=false) {
+    if (pre_size) Max7219_Print(start, value, pre_size, leadzero, !!post_size);
+    if (post_size) {
+      const int16_t after = ABS(value) * (10 ^ post_size);
+      Max7219_Print(start + pre_size, after, post_size, true);
+    }
   }
-  Max7219_LED_Set(col, row, true);
+
+#endif // MAX7219_NUMERIC
+
+inline void Max7219_Error(const char * const func, const int32_t v1, const int32_t v2=-1) {
+  #if ENABLED(MAX7219_ERRORS)
+    SERIAL_ECHOPGM("??? ");
+    serialprintPGM(func);
+    SERIAL_CHAR('(');
+    SERIAL_ECHO(v1);
+    if (v2 > 0) SERIAL_ECHOPAIR(", ", v2);
+    SERIAL_CHAR(')');
+    SERIAL_EOL();
+  #else
+    UNUSED(func); UNUSED(v1); UNUSED(v2);
+  #endif
 }
 
-void Max7219_LED_Off(const uint8_t col, const uint8_t row) {
-  if (row > 7 || col > 7) {
-    SERIAL_ECHOPAIR("??? Max7219_LED_Off(", (int)row);
-    SERIAL_ECHOPAIR(",", (int)col);
-    SERIAL_ECHOLNPGM(")");
-    return;
-  }
-  Max7219_LED_Set(col, row, false);
+inline uint8_t flipped(const uint8_t bits) {
+  uint8_t outbits = 0;
+  for (uint8_t b = 0; b < 8; b++)
+    if (bits & _BV(b)) outbits |= _BV(7 - b);
+  return outbits;
 }
 
-void Max7219_LED_Toggle(const uint8_t col, const uint8_t row) {
-  if (row > 7 || col > 7) {
-    SERIAL_ECHOPAIR("??? Max7219_LED_Toggle(", (int)row);
-    SERIAL_ECHOPAIR(",", (int)col);
-    SERIAL_ECHOLNPGM(")");
-    return;
-  }
-  if (TEST(LEDs[row], col))
-    Max7219_LED_Off(col, row);
-  else
-    Max7219_LED_On(col, row);
+// Modify a single LED bit and send the changed line
+void Max7219_LED_Set(const uint8_t x, const uint8_t y, const bool on) {
+  if (x > 7 || y > 7) return Max7219_Error(PSTR("Max7219_LED_Set"), x, y);
+  if (BIT_7219(x, y) == on) return;
+  XOR_7219(x, y);
+  SEND_7219(_ROW_, LEDs[_ROW_]);
 }
 
-void Max7219_Clear_Column(const uint8_t col) {
-  if (col > 7) {
-    SERIAL_ECHOPAIR("??? Max7219_Clear_Column(", (int)col);
-    SERIAL_ECHOLNPGM(")");
-    return;
-  }
-  LEDs[col] = 0;
-  Max7219(8 - col, LEDs[col]);
+void Max7219_LED_On(const uint8_t x, const uint8_t y) {
+  if (x > 7 || y > 7) return Max7219_Error(PSTR("Max7219_LED_On"), x, y);
+  Max7219_LED_Set(x, y, true);
 }
 
-void Max7219_Clear_Row(const uint8_t row) {
-  if (row > 7) {
-    SERIAL_ECHOPAIR("??? Max7219_Clear_Row(", (int)row);
-    SERIAL_ECHOLNPGM(")");
-    return;
-  }
-  for (uint8_t c = 0; c <= 7; c++)
-    Max7219_LED_Off(c, row);
+void Max7219_LED_Off(const uint8_t x, const uint8_t y) {
+  if (x > 7 || y > 7) return Max7219_Error(PSTR("Max7219_LED_Off"), x, y);
+  Max7219_LED_Set(x, y, false);
 }
 
-void Max7219_Set_Row(const uint8_t row, const uint8_t val) {
-  if (row > 7) {
-    SERIAL_ECHOPAIR("??? Max7219_Set_Row(", (int)row);
-    SERIAL_ECHOPAIR(",", (int)val);
-    SERIAL_ECHOLNPGM(")");
-    return;
-  }
-  for (uint8_t b = 0; b <= 7; b++)
-    if (TEST(val, b))
-      Max7219_LED_On(7 - b, row);
-    else
-      Max7219_LED_Off(7 - b, row);
+void Max7219_LED_Toggle(const uint8_t x, const uint8_t y) {
+  if (x > 7 || y > 7) return Max7219_Error(PSTR("Max7219_LED_Toggle"), x, y);
+  Max7219_LED_Set(x, y, !BIT_7219(x, y));
 }
 
-void Max7219_Set_2_Rows(const uint8_t row, const uint16_t val) {
-  if (row > 6) {
-    SERIAL_ECHOPAIR("??? Max7219_Set_2_Rows(", (int)row);
-    SERIAL_ECHOPAIR(",", (int)val);
-    SERIAL_ECHOLNPGM(")");
-    return;
-  }
-  Max7219_Set_Row(row + 1, (val >> 8) & 0xFF);
-  Max7219_Set_Row(row + 0, (val     ) & 0xFF);
+inline void _Max7219_Set_Reg(const uint8_t reg, const uint8_t val) {
+  LEDs[reg] = val;
+  SEND_7219(reg, val);
 }
 
-void Max7219_Set_4_Rows(const uint8_t row, const uint32_t val) {
-  if (row > 4) {
-    SERIAL_ECHOPAIR("??? Max7219_Set_4_Rows(", (int)row);
-    SERIAL_ECHOPAIR(",", (long)val);
-    SERIAL_ECHOLNPGM(")");
-    return;
-  }
-  Max7219_Set_Row(row + 3, (val >> 24) & 0xFF);
-  Max7219_Set_Row(row + 2, (val >> 16) & 0xFF);
-  Max7219_Set_Row(row + 1, (val >>  8) & 0xFF);
-  Max7219_Set_Row(row + 0, (val      ) & 0xFF);
+void Max7219_Set_Row(const uint8_t _ROW_, const uint8_t val) {
+  if (_ROW_ > 7) return Max7219_Error(PSTR("Max7219_Set_Row"), _ROW_);
+  #if _ROT == 90
+    for (uint8_t _COL_ = 0; _COL_ <= 7; _COL_++) Max7219_LED_Set(7 - _COL_, _ROW_, TEST(val, _COL_));
+  #elif _ROT == 180
+    _Max7219_Set_Reg(_ROW_, flipped(val));
+  #elif _ROT == 270
+    for (uint8_t _COL_ = 0; _COL_ <= 7; _COL_++) Max7219_LED_Set(_COL_, _ROW_, TEST(val, _COL_));
+  #else
+    _Max7219_Set_Reg(_ROW_, val);
+  #endif
 }
 
-void Max7219_Set_Column(const uint8_t col, const uint8_t val) {
-  if (col > 7) {
-    SERIAL_ECHOPAIR("??? Max7219_Column(", (int)col);
-    SERIAL_ECHOPAIR(",", (int)val);
-    SERIAL_ECHOLNPGM(")");
-    return;
-  }
-  LEDs[col] = val;
-  Max7219(8 - col, LEDs[col]);
+void Max7219_Clear_Row(const uint8_t _ROW_) {
+  if (_ROW_ > 7) return Max7219_Error(PSTR("Max7219_Clear_Row"), _ROW_);
+  #if _ROT == 90 || _ROT == 270
+    for (uint8_t _COL_ = 0; _COL_ <= 7; _COL_++) Max7219_LED_Off(_COL_, _ROW_);
+  #else
+    _Max7219_Set_Reg(_ROW_, 0);
+  #endif
+}
+
+void Max7219_Set_Column(const uint8_t _COL_, const uint8_t val) {
+  if (_COL_ > 7) return Max7219_Error(PSTR("Max7219_Set_Column"), _COL_);
+  #if _ROT == 90
+    _Max7219_Set_Reg(_COL_, val);
+  #elif _ROT == 180
+    for (uint8_t _ROW_ = 0; _ROW_ <= 7; _ROW_++) Max7219_LED_Set(_COL_, _ROW_, TEST(val, _ROW_));
+  #elif _ROT == 270
+    _Max7219_Set_Reg(_COL_, flipped(val));
+  #else
+    for (uint8_t _ROW_ = 0; _ROW_ <= 7; _ROW_++) Max7219_LED_Set(_COL_, _ROW_, TEST(val, _ROW_));
+  #endif
+}
+
+void Max7219_Clear_Column(const uint8_t _COL_) {
+  if (_COL_ > 7) return Max7219_Error(PSTR("Max7219_Clear_Column"), _COL_);
+  #if _ROT == 90 || _ROT == 270
+    _Max7219_Set_Reg(_COL_, 0);
+  #else
+    for (uint8_t _ROW_ = 0; _ROW_ <= 7; _ROW_++) Max7219_LED_Off(_COL_, _ROW_);
+  #endif
+}
+
+void Max7219_Set_2_Rows(const uint8_t y, uint16_t val) {
+  if (y > 6) return Max7219_Error(PSTR("Max7219_Set_2_Rows"), y, val);
+  Max7219_Set_Row(y + 0, val & 0xFF); val >>= 8;
+  Max7219_Set_Row(y + 1, val & 0xFF);
+}
+
+void Max7219_Set_4_Rows(const uint8_t y, uint32_t val) {
+  if (y > 4) return Max7219_Error(PSTR("Max7219_Set_4_Rows"), y, val);
+  Max7219_Set_Row(y + 0, val & 0xFF); val >>= 8;
+  Max7219_Set_Row(y + 1, val & 0xFF); val >>= 8;
+  Max7219_Set_Row(y + 2, val & 0xFF); val >>= 8;
+  Max7219_Set_Row(y + 3, val & 0xFF);
+}
+
+void Max7219_Set_2_Columns(const uint8_t x, uint16_t val) {
+  if (x > 6) return Max7219_Error(PSTR("Max7219_Set_2_Columns"), x, val);
+  Max7219_Set_Column(x + 0, val & 0xFF); val >>= 8;
+  Max7219_Set_Column(x + 1, val & 0xFF);
+}
+
+void Max7219_Set_4_Columns(const uint8_t x, uint32_t val) {
+  if (x > 4) return Max7219_Error(PSTR("Max7219_Set_4_Columns"), x, val);
+  Max7219_Set_Column(x + 0, val & 0xFF); val >>= 8;
+  Max7219_Set_Column(x + 1, val & 0xFF); val >>= 8;
+  Max7219_Set_Column(x + 2, val & 0xFF); val >>= 8;
+  Max7219_Set_Column(x + 3, val & 0xFF);
 }
 
 void Max7219_register_setup() {
-  //initiation of the max 7219
+  // Initialize the Max7219
   Max7219(max7219_reg_scanLimit, 0x07);
   Max7219(max7219_reg_decodeMode, 0x00);       // using an led matrix (not digits)
   Max7219(max7219_reg_shutdown, 0x01);         // not in shutdown mode
@@ -223,135 +293,173 @@ void Max7219_register_setup() {
                                                // range: 0x00 to 0x0F
 }
 
-void Max7219_init() {
-  uint8_t i, x, y;
+#ifdef MAX7219_INIT_TEST
+#if (MAX7219_INIT_TEST + 0) == 2
+
+  inline void Max7219_spiral(const bool on, const uint16_t del) {
+    constexpr int8_t way[] = { 1, 0, 0, 1, -1, 0, 0, -1 };
+    int8_t px = 0, py = 0, dir = 0;
+    for (uint8_t i = 64; i--;) {
+      Max7219_LED_Set(px, py, on);
+      delay(del);
+      const int8_t x = px + way[dir], y = py + way[dir + 1];
+      if (!WITHIN(x, 0, 7) || !WITHIN(y, 0, 7) || BIT_7219(x, y) == on) dir = (dir + 2) & 0x7;
+      px += way[dir]; py += way[dir + 1];
+    }
+  }
+
+#else
 
+  inline void Max7219_colset(const uint8_t x, const bool on) {
+    for (uint8_t y = 0; y <= 7; y++) Max7219_LED_Set(x, y, on);
+  }
+  inline void Max7219_sweep(const int8_t dir, const uint16_t ms, const bool on) {
+    uint8_t x = dir > 0 ? 0 : 7;
+    for (uint8_t i = 8; i--; x += dir) {
+      Max7219_Set_Column(x, on ? 0xFF : 0x00);
+      delay(ms);
+    }
+  }
+
+#endif
+#endif // MAX7219_INIT_TEST
+
+void Max7219_init() {
   SET_OUTPUT(MAX7219_DIN_PIN);
   SET_OUTPUT(MAX7219_CLK_PIN);
-
   OUT_WRITE(MAX7219_LOAD_PIN, HIGH);
   delay(1);
 
   Max7219_register_setup();
 
-  for (i = 0; i <= 7; i++) {      // empty registers, turn all LEDs off
+  for (uint8_t i = 0; i <= 7; i++) {      // Empty registers to turn all LEDs off
     LEDs[i] = 0x00;
-    Max7219(i + 1, 0);
+    Max7219(max7219_reg_digit0 + i, 0);
   }
 
-  for (x = 0; x <= 7; x++)        // Do an aesthetically pleasing pattern to fully test
-    for (y = 0; y <= 7; y++) {    // the Max7219 module and LEDs. First, turn them
-      Max7219_LED_On(y, x);       // all on.
-      delay(3);
-    }
+  #ifdef MAX7219_INIT_TEST
+    #if (MAX7219_INIT_TEST + 0) == 2
+      Max7219_spiral(true, 8);
+      delay(150);
+      Max7219_spiral(false, 8);
+    #else
+      // Do an aesthetically-pleasing pattern to fully test the Max7219 module and LEDs.
+      // Light up and turn off columns, both forward and backward.
+      Max7219_sweep(1, 20, true);
+      Max7219_sweep(1, 20, false);
+      delay(150);
+      Max7219_sweep(-1, 20, true);
+      Max7219_sweep(-1, 20, false);
+    #endif
+  #endif
+}
 
-  for (x = 0; x <= 7; x++)        // Now, turn them all off.
-    for (y = 0; y <= 7; y++) {
-      Max7219_LED_Off(y, x);
-      delay(3);                   // delay() is OK here. Max7219_init() is only called from
-    }                             // setup() and nothing is running yet.
+/**
+ * This code demonstrates some simple debugging using a single 8x8 LED Matrix. If your feature could
+ * benefit from matrix display, add its code here. Very little processing is required, so the 7219 is
+ * ideal for debugging when realtime feedback is important but serial output can't be used.
+ */
 
-  delay(150);
+// Apply changes to update a marker
+inline void Max7219_Mark16(const uint8_t y, const uint8_t v1, const uint8_t v2) {
+  Max7219_LED_Off(v1 & 0x7, y + (v1 >= 8));
+   Max7219_LED_On(v2 & 0x7, y + (v2 >= 8));
+}
 
-  for (x = 8; x--;)               // Now, do the same thing from the opposite direction
-    for (y = 0; y <= 7; y++) {
-      Max7219_LED_On(y, x);
-      delay(2);
-    }
+// Apply changes to update a tail-to-head range
+inline void Max7219_Range16(const uint8_t y, const uint8_t ot, const uint8_t nt, const uint8_t oh, const uint8_t nh) {
+  if (ot != nt) for (uint8_t n = ot & 0xF; n != (nt & 0xF) && n != (nh & 0xF); n = (n + 1) & 0xF)
+    Max7219_LED_Off(n & 0x7, y + (n >= 8));
+  if (oh != nh) for (uint8_t n = (oh + 1) & 0xF; n != ((nh + 1) & 0xF); n = (n + 1) & 0xF)
+     Max7219_LED_On(n & 0x7, y + (n >= 8));
+}
 
-  for (x = 8; x--;)
-    for (y = 0; y <= 7; y++) {
-      Max7219_LED_Off(y, x);
-      delay(2);
-    }
+// Apply changes to update a quantity
+inline void Max7219_Quantity16(const uint8_t y, const uint8_t ov, const uint8_t nv) {
+  for (uint8_t i = MIN(nv, ov); i < MAX(nv, ov); i++)
+    Max7219_LED_Set(i >> 1, y + (i & 1), nv >= ov);
 }
 
-/**
- * These are sample debug features to demonstrate the usage of the 8x8 LED Matrix for debug purposes.
- * There is very little CPU burden added to the system by displaying information within the idle()
- * task.
- *
- * But with that said, if your debugging can be facilitated by making calls into the library from
- * other places in the code, feel free to do it.  The CPU burden for a few calls to toggle an LED
- * or clear a row is not very significant.
- */
 void Max7219_idle_tasks() {
-  #if MAX7219_DEBUG_STEPPER_HEAD || MAX7219_DEBUG_STEPPER_TAIL || MAX7219_DEBUG_STEPPER_QUEUE
-    CRITICAL_SECTION_START;
-    #if MAX7219_DEBUG_STEPPER_HEAD || MAX7219_DEBUG_STEPPER_QUEUE
+  #define MAX7219_USE_HEAD (defined(MAX7219_DEBUG_PLANNER_HEAD) || defined(MAX7219_DEBUG_PLANNER_QUEUE))
+  #define MAX7219_USE_TAIL (defined(MAX7219_DEBUG_PLANNER_TAIL) || defined(MAX7219_DEBUG_PLANNER_QUEUE))
+  #if MAX7219_USE_HEAD || MAX7219_USE_TAIL
+    #ifndef CPU_32_BIT
+      CRITICAL_SECTION_START;
+    #endif
+    #if MAX7219_USE_HEAD
       const uint8_t head = planner.block_buffer_head;
     #endif
-    #if MAX7219_DEBUG_STEPPER_TAIL || MAX7219_DEBUG_STEPPER_QUEUE
+    #if MAX7219_USE_TAIL
       const uint8_t tail = planner.block_buffer_tail;
     #endif
-    CRITICAL_SECTION_END;
+    #ifndef CPU_32_BIT
+      CRITICAL_SECTION_END;
+    #endif
+  #endif
+
+  #if ENABLED(MAX7219_DEBUG_PRINTER_ALIVE)
+    static uint8_t refresh_cnt; // = 0
+    constexpr uint16_t refresh_limit = 5;
+    static millis_t next_blink = 0;
+    const millis_t ms = millis();
+    const bool do_blink = ELAPSED(ms, next_blink);
+  #else
+    static uint16_t refresh_cnt; // = 0
+    constexpr bool do_blink = true;
+    constexpr uint16_t refresh_limit = 50000;
   #endif
 
-  static uint16_t refresh_cnt = 0;  // The Max7219 circuit boards available for several dollars on eBay
-  if (refresh_cnt++ > 50000) {      // are vulnerable to electrical noise, especially with long wires
-    Max7219_register_setup();       // next to high current wires. If the display becomes corrupted due
-    Max7219_LED_Toggle(7, 0);       // to electrical noise, this will fix it within a couple of seconds.
+  // Some Max7219 units are vulnerable to electrical noise, especially
+  // with long wires next to high current wires. If the display becomes
+  // corrupted, this will fix it within a couple seconds.
+  if (do_blink && ++refresh_cnt >= refresh_limit) {
     refresh_cnt = 0;
+    Max7219_register_setup();
   }
 
   #if ENABLED(MAX7219_DEBUG_PRINTER_ALIVE)
-    static millis_t next_blink = 0;
-    if (ELAPSED(millis(), next_blink)) {
+    if (do_blink) {
       Max7219_LED_Toggle(7, 7);
-      next_blink = millis() + 750;
+      next_blink = ms + 1000;
     }
   #endif
 
-  #ifdef MAX7219_DEBUG_STEPPER_HEAD
-    static int16_t last_head_cnt = 0;
-    if (last_head_cnt != head) {
-      if (last_head_cnt < 8)
-        Max7219_LED_Off(MAX7219_DEBUG_STEPPER_HEAD, last_head_cnt);
-      else
-        Max7219_LED_Off(MAX7219_DEBUG_STEPPER_HEAD + 1, last_head_cnt - 8);
+  #if defined(MAX7219_DEBUG_PLANNER_HEAD) && defined(MAX7219_DEBUG_PLANNER_TAIL) && MAX7219_DEBUG_PLANNER_HEAD == MAX7219_DEBUG_PLANNER_TAIL
+
+    static int16_t last_head_cnt = 0xF, last_tail_cnt = 0xF;
 
+    if (last_head_cnt != head || last_tail_cnt != tail) {
+      Max7219_Range16(MAX7219_DEBUG_PLANNER_HEAD, last_tail_cnt, tail, last_head_cnt, head);
       last_head_cnt = head;
-      if (head < 8)
-        Max7219_LED_On(MAX7219_DEBUG_STEPPER_HEAD, head);
-      else
-        Max7219_LED_On(MAX7219_DEBUG_STEPPER_HEAD + 1, head - 8);
+      last_tail_cnt = tail;
     }
-  #endif
 
-  #ifdef MAX7219_DEBUG_STEPPER_TAIL
-    static int16_t last_tail_cnt = 0;
-    if (last_tail_cnt != tail) {
-      if (last_tail_cnt < 8)
-        Max7219_LED_Off(MAX7219_DEBUG_STEPPER_TAIL, last_tail_cnt);
-      else
-        Max7219_LED_Off(MAX7219_DEBUG_STEPPER_TAIL + 1, last_tail_cnt - 8);
+  #else
+
+    #ifdef MAX7219_DEBUG_PLANNER_HEAD
+      static int16_t last_head_cnt = 0x1;
+      if (last_head_cnt != head) {
+        Max7219_Mark16(MAX7219_DEBUG_PLANNER_HEAD, last_head_cnt, head);
+        last_head_cnt = head;
+      }
+    #endif
+
+    #ifdef MAX7219_DEBUG_PLANNER_TAIL
+      static int16_t last_tail_cnt = 0x1;
+      if (last_tail_cnt != tail) {
+        Max7219_Mark16(MAX7219_DEBUG_PLANNER_TAIL, last_tail_cnt, tail);
+        last_tail_cnt = tail;
+      }
+    #endif
 
-      last_tail_cnt = tail;
-      if (tail < 8)
-        Max7219_LED_On(MAX7219_DEBUG_STEPPER_TAIL, tail);
-      else
-        Max7219_LED_On(MAX7219_DEBUG_STEPPER_TAIL + 1, tail - 8);
-    }
   #endif
 
-  #ifdef MAX7219_DEBUG_STEPPER_QUEUE
+  #ifdef MAX7219_DEBUG_PLANNER_QUEUE
     static int16_t last_depth = 0;
-    int16_t current_depth = head - tail;
-    if (current_depth != last_depth) {  // usually, no update will be needed.
-      if (current_depth < 0) current_depth += BLOCK_BUFFER_SIZE;
-      NOMORE(current_depth, BLOCK_BUFFER_SIZE);
-      NOMORE(current_depth, 16);        // if the BLOCK_BUFFER_SIZE is greater than 16, two lines
-                                        // of LEDs is enough to see if the buffer is draining
-
-      const uint8_t st = MIN(current_depth, last_depth),
-                    en = MAX(current_depth, last_depth);
-      if (current_depth < last_depth)
-        for (uint8_t i = st; i <= en; i++)   // clear the highest order LEDs
-          Max7219_LED_Off(MAX7219_DEBUG_STEPPER_QUEUE + (i & 1), i / 2);
-      else
-        for (uint8_t i = st; i <= en; i++)   // set the LEDs to current depth
-          Max7219_LED_On(MAX7219_DEBUG_STEPPER_QUEUE + (i & 1), i / 2);
-
+    const int16_t current_depth = (head - tail + BLOCK_BUFFER_SIZE) & (BLOCK_BUFFER_SIZE - 1) & 0xF;
+    if (current_depth != last_depth) {
+      Max7219_Quantity16(MAX7219_DEBUG_PLANNER_QUEUE, last_depth, current_depth);
       last_depth = current_depth;
     }
   #endif

Marlin/src/feature/Max7219_Debug_LEDs.h

@@ -22,11 +22,9 @@
 
 /**
  * This module is off by default, but can be enabled to facilitate the display of
- * extra debug information during code development. It assumes the existence of a
- * Max7219 LED Matrix. A suitable device can be obtained on eBay similar to this:
- * http://www.ebay.com/itm/191781645249 for under $2.00 including shipping.
+ * extra debug information during code development.
  *
- * Just connect up +5v and GND to give it power, then connect up the pins assigned
+ * Just connect up 5V and GND to give it power, then connect up the pins assigned
  * in Configuration_adv.h. For example, on the Re-ARM you could use:
  *
  *   #define MAX7219_CLK_PIN   77
@@ -35,28 +33,13 @@
  *
  * Max7219_init() is called automatically at startup, and then there are a number of
  * support functions available to control the LEDs in the 8x8 grid.
- *
- * void Max7219_init();
- * void Max7219_PutByte(uint8_t data);
- * void Max7219(uint8_t reg, uint8_t data);
- * void Max7219_LED_Set(uint8_t row, uint8_t col, bool on);
- * void Max7219_LED_On(uint8_t col, uint8_t row);
- * void Max7219_LED_Off(uint8_t col, uint8_t row);
- * void Max7219_LED_Toggle(uint8_t row, uint8_t col);
- * void Max7219_Clear_Row(uint8_t row);
- * void Max7219_Clear_Column(uint8_t col);
- * void Max7219_Set_Row(uint8_t row, uint8_t val);
- * void Max7219_Set_2_Rows(uint8_t row, uint16_t val);
- * void Max7219_Set_4_Rows(uint8_t row, uint32_t val);
- * void Max7219_Set_Column(uint8_t col, uint8_t val);
- * void Max7219_idle_tasks();
  */
 
 #ifndef __MAX7219_DEBUG_LEDS_H__
 #define __MAX7219_DEBUG_LEDS_H__
 
 //
-// define max7219 registers
+// MAX7219 registers
 //
 #define max7219_reg_noop        0x00
 #define max7219_reg_digit0      0x01
@@ -68,23 +51,33 @@
 #define max7219_reg_digit6      0x07
 #define max7219_reg_digit7      0x08
 
-#define max7219_reg_intensity   0x0A
-#define max7219_reg_displayTest 0x0F
 #define max7219_reg_decodeMode  0x09
+#define max7219_reg_intensity   0x0A
 #define max7219_reg_scanLimit   0x0B
 #define max7219_reg_shutdown    0x0C
+#define max7219_reg_displayTest 0x0F
 
 void Max7219_init();
 void Max7219_PutByte(uint8_t data);
+
+// Set a single register (e.g., a whole native row)
 void Max7219(const uint8_t reg, const uint8_t data);
-void Max7219_LED_Set(const uint8_t row, const uint8_t col, const bool on);
-void Max7219_LED_On(const uint8_t row, const uint8_t col);
-void Max7219_LED_Off(const uint8_t row, const uint8_t col);
-void Max7219_LED_Toggle(const uint8_t row, const uint8_t col);
-void Max7219_Clear_Row(const uint8_t row);
+
+// Set a single LED by XY coordinate
+void Max7219_LED_Set(const uint8_t x, const uint8_t y, const bool on);
+void Max7219_LED_On(const uint8_t x, const uint8_t y);
+void Max7219_LED_Off(const uint8_t x, const uint8_t y);
+void Max7219_LED_Toggle(const uint8_t x, const uint8_t y);
+
+// Set all 8 LEDs in a single column
+void Max7219_Set_Column(const uint8_t col, const uint8_t val);
 void Max7219_Clear_Column(const uint8_t col);
+
+// Set all 8 LEDs in a single row
 void Max7219_Set_Row(const uint8_t row, const uint8_t val);
-void Max7219_Set_Column(const uint8_t col, const uint8_t val);
+void Max7219_Clear_Row(const uint8_t row);
+
+// Apply custom code to update the matrix
 void Max7219_idle_tasks();
 
 #endif // __MAX7219_DEBUG_LEDS_H__

Marlin/src/feature/bedlevel/ubl/ubl_G29.cpp

@@ -41,8 +41,6 @@
   #include "../../../feature/bedlevel/bedlevel.h"
   #include "../../../libs/least_squares_fit.h"
 
-  #include "../../../feature/Max7219_Debug_LEDs.h"
-
   #include <math.h>
 
   #define UBL_G29_P31

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

Marlin/src/inc/SanityCheck.h

@@ -283,6 +283,12 @@
   #error "JUNCTION_ACCELERATION_FACTOR is obsolete. Delete it from Configuration_adv.h."
 #elif defined(JUNCTION_ACCELERATION)
   #error "JUNCTION_ACCELERATION is obsolete. Delete it from Configuration_adv.h."
+#elif defined(MAX7219_DEBUG_STEPPER_HEAD)
+  #error "MAX7219_DEBUG_STEPPER_HEAD is now MAX7219_DEBUG_PLANNER_HEAD. Please update your configuration."
+#elif defined(MAX7219_DEBUG_STEPPER_TAIL)
+  #error "MAX7219_DEBUG_STEPPER_TAIL is now MAX7219_DEBUG_PLANNER_TAIL. Please update your configuration."
+#elif defined(MAX7219_DEBUG_STEPPER_QUEUE)
+  #error "MAX7219_DEBUG_STEPPER_QUEUE is now MAX7219_DEBUG_PLANNER_QUEUE. Please update your configuration."
 #endif
 
 #define BOARD_MKS_13     -47