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diff --git a/docs/feature_rgb_matrix.md b/docs/feature_rgb_matrix.md new file mode 100644 index 000000000..dfc103247 --- /dev/null +++ b/docs/feature_rgb_matrix.md @@ -0,0 +1,141 @@ +# RGB Matrix Lighting + +There is basic support for addressable RGB matrix lighting with the I2C IS31FL3731 RGB controller. To enable it, add this to your `rules.mk`: + + RGB_MATRIX_ENABLE = yes + +Configure the hardware via your `config.h`: + + // This is a 7-bit address, that gets left-shifted and bit 0 + // set to 0 for write, 1 for read (as per I2C protocol) + // The address will vary depending on your wiring: + // 0b1110100 AD <-> GND + // 0b1110111 AD <-> VCC + // 0b1110101 AD <-> SCL + // 0b1110110 AD <-> SDA + #define DRIVER_ADDR_1 0b1110100 + #define DRIVER_ADDR_2 0b1110110 + + #define DRIVER_COUNT 2 + #define DRIVER_1_LED_TOTAL 25 + #define DRIVER_2_LED_TOTAL 24 + #define DRIVER_LED_TOTAL DRIVER_1_LED_TOTAL + DRIVER_2_LED_TOTAL + +Currently only 2 drivers are supported, but it would be trivial to support all 4 combinations. + +Define these arrays listing all the LEDs in your `<keyboard>.c`: + + const is31_led g_is31_leds[DRIVER_LED_TOTAL] = { + /* Refer to IS31 manual for these locations + * driver + * | R location + * | | G location + * | | | B location + * | | | | */ + {0, C1_3, C2_3, C3_3}, + .... + } + +Where `Cx_y` is the location of the LED in the matrix defined by [the datasheet](http://www.issi.com/WW/pdf/31FL3731.pdf). The `driver` is the index of the driver you defined in your `config.h` (`0` or `1` right now). + + const rgb_led g_rgb_leds[DRIVER_LED_TOTAL] = { + /* {row | col << 4} + * | {x=0..224, y=0..64} + * | | modifier + * | | | */ + {{0|(0<<4)}, {20.36*0, 21.33*0}, 1}, + {{0|(1<<4)}, {20.36*1, 21.33*0}, 1}, + .... + } + +The format for the matrix position used in this array is `{row | (col << 4)}`. The `x` is between (inclusive) 0-224, and `y` is between (inclusive) 0-64. The easiest way to calculate these positions is: + + x = 224 / ( NUMBER_OF_ROWS - 1 ) * ROW_POSITION + y = 64 / (NUMBER_OF_COLS - 1 ) * COL_POSITION + +Where all variables are decimels/floats. + +`modifier` is a boolean, whether or not a certain key is considered a modifier (used in some effects). + +## Keycodes + +All RGB keycodes are currently shared with the RGBLIGHT system: + + * `RGB_TOG` - toggle + * `RGB_MOD` - cycle through modes + * `RGB_HUI` - increase hue + * `RGB_HUD` - decrease hue + * `RGB_SAI` - increase saturation + * `RGB_SAD` - decrease saturation + * `RGB_VAI` - increase value + * `RGB_VAD` - decrease value + + + * `RGB_MODE_*` keycodes will generally work, but are not currently mapped to the correct effects for the RGB Matrix system + +## RGB Matrix Effects + +These are the effects that are currently available: + + enum rgb_matrix_effects { + RGB_MATRIX_SOLID_COLOR = 1, + RGB_MATRIX_SOLID_REACTIVE, + RGB_MATRIX_ALPHAS_MODS, + RGB_MATRIX_DUAL_BEACON, + RGB_MATRIX_GRADIENT_UP_DOWN, + RGB_MATRIX_RAINDROPS, + RGB_MATRIX_CYCLE_ALL, + RGB_MATRIX_CYCLE_LEFT_RIGHT, + RGB_MATRIX_CYCLE_UP_DOWN, + RGB_MATRIX_RAINBOW_BEACON, + RGB_MATRIX_RAINBOW_PINWHEELS, + RGB_MATRIX_RAINBOW_MOVING_CHEVRON, + RGB_MATRIX_JELLYBEAN_RAINDROPS, + #ifdef RGB_MATRIX_KEYPRESSES + RGB_MATRIX_SPLASH, + RGB_MATRIX_MULTISPLASH, + RGB_MATRIX_SOLID_SPLASH, + RGB_MATRIX_SOLID_MULTISPLASH, + #endif + RGB_MATRIX_EFFECT_MAX + }; + +## Custom layer effects + +Custom layer effects can be done by defining this in your `<keyboard>.c`: + + void rgb_matrix_indicators_kb(void) { + // rgb_matrix_set_color(index, red, green, blue); + } + +A similar function works in the keymap as `rgb_matrix_indicators_user`. + +## Additional `config.h` Options + + #define RGB_MATRIX_KEYPRESSES // reacts to keypresses (will slow down matrix scan by a lot) + #define RGB_MATRIX_KEYRELEASES // reacts to keyreleases (not recommened) + #define RGB_DISABLE_AFTER_TIMEOUT 0 // number of ticks to wait until disabling effects + #define RGB_DISABLE_WHEN_USB_SUSPENDED false // turn off effects when suspended + #define RGB_MATRIX_SKIP_FRAMES 1 // number of frames to skip when displaying animations (0 is full effect) + +## EEPROM storage + +The EEPROM for it is currently shared with the RGBLIGHT system (it's generally assumed only one RGB would be used at a time), but could be configured to use its own 32bit address with: + + #define EECONFIG_RGB_MATRIX (uint32_t *)16 + +Where `16` is an unused index from `eeconfig.h`. + +## Suspended state + +To use the suspend feature, add this to your `<keyboard>.c`: + + void suspend_power_down_kb(void) + { + rgb_matrix_set_suspend_state(true); + } + + void suspend_wakeup_init_kb(void) + { + rgb_matrix_set_suspend_state(false); + } |