lpd8808.h

Interface definition for the LPD8808 LED strip driver.

lpd8808_params_t lpd8808_t

Device descriptor, same as the configuration parameters.

int lpd8808_init(lpd8808.h::lpd8808_t * dev, const lpd8808_params_t * params)

Initialize the given LPD8808 based LED strip.

Parameters

dev:device to initialize params:parameters used for initialization

Return values

• 0 on success
• <0 on error

void lpd8808_load_rgb(const lpd8808.h::lpd8808_t * dev, color_rgb_t vals)

Set the color value of each LED on the strip.

This function sets the color value of each LED on the strip by shifting out the corresponding color values one after the other. The function expects an array of color_rgb_t values of the same length as LEDs on the strip.

Parameters

dev:device to load color values to vals:array of color values, MUST be of same length as LEDs on the strip

struct lpd8808_params_t

Parameters needed for configuration.

int led_cnt

number of LEDs on the strip

gpio.h::gpio_t pin_clk

pin connected to the strip’s clock signal

gpio.h::gpio_t pin_dat

pin connected to the strip’s data signal