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Support for multiple Max7219 units in a chain (#11226)

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* Support for multiple Max7219 units in a chain

I'll move this support over to bugfix_2.0.0 in the next few days.   And
then look at updating the Max7219_idle() routine to make use of multiple
units in a chain.

* spelling correction
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Roxy-3D 2018-07-08 17:35:58 -05:00 • committed by GitHub
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commit 39b3e4c501
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44 changed files with 473 additions and 293 deletions
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36
Marlin/Marlin_main.cpp
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@ -10882,30 +10882,52 @@ inline void gcode_M502() {
* M7219: Control the Max7219 LED matrix
*
* I - Initialize (clear) the matrix
* F - Fill the matrix (set all bits)
* P - Dump the LEDs[] array values
* 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
* V<value> - The potentially 32-bit value or on/off state to set
* (for example: a chain of 4 Max7219 devices can have 32 bit
* rows or columns depending upon rotation)
*/
inline void gcode_M7219() {
if (parser.seen('I'))
Max7219_Clear();
else if (parser.seenval('R')) {
const uint8_t r = parser.value_int();
Max7219_Set_Row(r, parser.byteval('V'));
if (parser.seen('F'))
for(uint8_t x = 0; x < MAX7219_X_LEDS; x++)
Max7219_Set_Column(x, 0xffffffff);
if (parser.seenval('R')) {
const uint32_t r = parser.value_int();
Max7219_Set_Row(r, parser.ulongval('V'));
return;
}
else if (parser.seenval('C')) {
const uint8_t c = parser.value_int();
Max7219_Set_Column(c, parser.byteval('V'));
const uint32_t c = parser.value_int();
Max7219_Set_Column(c, parser.ulongval('V'));
return;
}
else if (parser.seenval('X') || parser.seenval('Y')) {
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);
}
if (parser.seen('P')) {
for(uint8_t x = 0; x < (8*MAX7219_NUMBER_UNITS); x++) {
SERIAL_ECHOPAIR("LEDs[", x);
SERIAL_ECHOPAIR("]=", LEDs[x]);
SERIAL_ECHO("\n");
}
return;
}
}
#endif // MAX7219_GCODE