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@@ -33,13 +33,16 @@
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* I - Initialize (clear) the matrix
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* F - Fill the matrix (set all bits)
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* P - Dump the led_line[] array values
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- * C<column> - Set a column to the 8-bit value V
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- * R<row> - Set a row to the 8-bit value V
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- * X<pos> - X position of an LED to set or toggle
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- * Y<pos> - Y position of an LED to set or toggle
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- * V<value> - The potentially 32-bit value or on/off state to set
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- * (for example: a chain of 4 Max7219 devices can have 32 bit
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- * rows or columns depending upon rotation)
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+ * C<column> - Set a column to the bitmask given by 'V' (Units 0-3 in portrait layout)
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+ * R<row> - Set a row to the bitmask given by 'V' (Units 0-3 in landscape layout)
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+ * X<pos> - X index of an LED to set or toggle
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+ * Y<pos> - Y index of an LED to set or toggle
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+ * V<value> - LED on/off state or row/column bitmask (8, 16, 24, or 32-bits)
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+ * ('C' / 'R' can be used to update up to 4 units at once)
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+ *
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+ * Directly set a native matrix row to the 8-bit value 'V':
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+ * D<line> - Display line (0..7)
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+ * U<unit> - Unit index (0..MAX7219_NUMBER_UNITS-1)
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*/
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void GcodeSuite::M7219() {
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if (parser.seen('I')) {
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@@ -62,12 +65,13 @@ void GcodeSuite::M7219() {
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else if (parser.seenval('X') || parser.seenval('Y')) {
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const uint8_t x = parser.byteval('X'), y = parser.byteval('Y');
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if (parser.seenval('V'))
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- max7219.led_set(x, y, parser.boolval('V'));
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+ max7219.led_set(x, y, v > 0);
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else
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max7219.led_toggle(x, y);
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}
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else if (parser.seen('D')) {
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- const uint8_t line = parser.byteval('D') + (parser.byteval('U') << 3);
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+ const uint8_t uline = parser.value_byte() & 0x7,
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+ line = uline + parser.byteval('U') << 3;
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if (line < MAX7219_LINES) {
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max7219.led_line[line] = v;
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return max7219.refresh_line(line);
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