~ruther/qmk_firmware (e7a08ef1a99b407f7326e146239d785e552c9aba): docs/drivers/apa102.md

#APA102 Driver {#apa102-driver}

This driver provides support for APA102 addressable RGB LEDs. They are similar to the WS2812 LEDs, but have increased data and refresh rates.

#Usage {#usage}

In most cases, the APA102 driver code is automatically included if you are using either the RGBLight or RGB Matrix feature with the apa102 driver set, and you would use those APIs instead.

However, if you need to use the driver standalone, add the following to your rules.mk:

APA102_DRIVER_REQUIRED = yes

You can then call the APA102 API by including apa102.h in your code.

#Basic Configuration {#basic-configuration}

Add the following to your config.h:

Define	Default	Description
`APA102_DI_PIN`	Not defined	The GPIO pin connected to the DI pin of the first LED in the chain
`APA102_CI_PIN`	Not defined	The GPIO pin connected to the CI pin of the first LED in the chain
`APA102_DEFAULT_BRIGHTNESS`	`31`	The default global brightness level of the LEDs, from 0 to 31

#API {#api}

#`void apa102_setleds(rgb_led_t *start_led, uint16_t num_leds)`

Send RGB data to the APA102 LED chain.

#Arguments {#api-apa102-setleds-arguments}

rgb_led_t *start_led
A pointer to the LED array.
uint16_t num_leds
The length of the LED array.

#`void apa102_set_brightness(uint8_t brightness)`

Set the global brightness.

#Arguments {#api-apa102-set-brightness-arguments}

uint8_t brightness
The brightness level to set, from 0 to 31.