kmk_firmware/docs/led.md
2019-06-21 16:49:00 -07:00

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# LED (Mono color backlight)
Want your keyboard to shine? Add some lights!
## [Keycodes]
|Key |Aliases |Description |
|-----------------------------|-------------------|----------------------------|
|`KC.LED_TOG` | |Toggles LED's |
|`KC.LED_INC` | |Increase Brightness |
|`KC.LED_DEC` | |Decrease Brightness |
|`KC.LED_ANI` | |Increase animation speed |
|`KC.LED_AND` | |Decrease animation speed |
|`KC.LED_MODE_PLAIN` |`LED_M_P` |Static LED's |
|`KC.LED_MODE_BREATHE` |`LED_M_B` |Breathing animation |
## Configuration
|Define |Default |Description |
|-----------------------------------------|-------------|------------------------------------------------|
|`keyboard.led_config['brightness_step']` |`5` |The number of steps to change the brightness by |
|`keyboard.led_config['brightness_limit']`|`100` |The maximum brightness level in percent |
## Built-in Animation Configuration
|Define |Default |Description |
|-----------------------------------------|-------------|-------------------------------------------------------------------------------------|
|`keyboard.led_config['breath_center']` |`1.5` |Used to calculate the curve for the breathing animation. Anywhere from 1.0 - 2.7 is valid|
## Functions
If you want to create your own animations, or for example, change the lighting in a macro, or a layer switch, here are some functions that are available.
|Function |Description |
|--------------------------------------------|--------------------------------------------------------------------------------------------|
|`keyboard.pixels.increase_brightness(step)` |Increases hue by a given step |
|`keyboard.pixels.decrease_brightness(step)` |Decreases hue by a given step |
|`keyboard.pixels.set_brightness(percent)` |Increases saturation by a given step |
## Direct variable access
|Define |Default |Description |
|-----------------------------------|-----------|--------------------------------------------------------------------------------------------------------|
|`keyboard.led.brightness` |`0` |Sets the brightness by percent 0-100 |
|`keyboard.led.brightness_limit` |`100` |Sets the limit of brightness |
|`keyboard.led.brightness_step` |`5` |Sets the step value to change brightness by |
|`keyboard.led.animation_mode` |`static` |This can be changed to any modes included, or to something custom for user animations. Any string is valid |
|`keyboard.led.animation_speed` |`1` |Increases animation speed of most animations. Recommended 1-5, Maximum 10. |
# Troubleshooting
Make sure that your board supports LED backlight by checking for a line with "LED_PIN". If it does not, you can add it to your keymap.
|Define |Description |
|---------------------|---------------------------------------------|
|`keyboard.led_pin` |The pin connected to the data pin of the LEDs|