ws2812.c File Reference

Driver for WS2812 and WS2812B RGB LEDs. More...

#include <propeller.h>
#include "ws2812.h"

Data Structures
struct	ws2812_hdr

Functions
int	ws_start (ws2812_t *state, int usreset, int ns0h, int ns0l, int ns1h, int ns1l, int type)
	Load a COG with a driver using custom parameters.
void	ws2812_set (ws2812_t *state, int pin, uint32_t *colors, int count)
	Set color pattern on a chain of LEDs.

Detailed Description

Driver for WS2812 and WS2812B RGB LEDs.

Author

Parallax Inc.

Version

0.85

Copyright

Copyright (c) Parallax Inc. 2014, All Rights MIT Licensed.

Function Documentation

void ws2812_set	(	ws2812_t *	driver,
		int	pin,
		uint32_t *	colors,
		int	count
	)

Set color pattern on a chain of LEDs.

Parameters

driver	Pointer to the driver structure
pin	Pin connected to the first LED
colors	Array of colors, one for each LED in the chain
count	Number of LEDs in the chain

int ws_start	(	ws2812_t *	driver,
		int	usreset,
		int	ns0h,
		int	ns0l,
		int	ns1h,
		int	ns1l,
		int	type
	)

Load a COG with a driver using custom parameters.

Parameters

usreset	Reset timing (us)
ns0h	0-bit high timing (ns)
ns0l	0-bit low timing (ns)
ns1h	1-bit high timing (ns)
ns1l	1-bit low timing (ns)
type	color format (either TYPE_RGB or TYPE_GRB)

Returns

Driver COG number or -1 on failure