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attiny10-lantern/light_ws2812.h

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/*
* light weight WS2812 lib include
*
* Version 2.3 - Nev 29th 2015
* Author: Tim (cpldcpu@gmail.com)
*
* Please do not change this file! All configuration is handled in "ws2812_config.h"
*
* License: GNU GPL v2+ (see License.txt)
+
*/
#ifndef LIGHT_WS2812_H_
#define LIGHT_WS2812_H_
#include <avr/io.h>
#include <avr/interrupt.h>
///////////////////////////////////////////////////////////////////////
// Define Reset time in µs.
//
// This is the time the library spends waiting after writing the data.
//
// WS2813 needs 300 µs reset time
// WS2812 and clones only need 50 µs
//
///////////////////////////////////////////////////////////////////////
#if !defined(ws2812_resettime)
#define ws2812_resettime 300
#endif
///////////////////////////////////////////////////////////////////////
// Define I/O pin
///////////////////////////////////////////////////////////////////////
#if !defined(ws2812_port)
#define ws2812_port B // Data port
#endif
#if !defined(ws2812_pin)
#define ws2812_pin 0 // Data out pin
#endif
/*
* Structure of the LED array
*
* cRGB: RGB for WS2812S/B/C/D, SK6812, SK6812Mini, SK6812WWA, APA104, APA106
* cRGBW: RGBW for SK6812RGBW
*/
struct cRGB { uint8_t r; uint8_t g; uint8_t b; };
struct cRGBW { uint8_t g; uint8_t r; uint8_t b; uint8_t w;};
/* User Interface
*
* Input:
* ledarray: An array of GRB data describing the LED colors
* number_of_leds: The number of LEDs to write
* pinmask (optional): Bitmask describing the output bin. e.g. _BV(PB0)
*
* The functions will perform the following actions:
* - Set the data-out pin as output
* - Send out the LED data
* - Wait 50µs to reset the LEDs
*/
void ws2812_setleds (struct cRGB *ledarray, uint16_t number_of_leds);
void ws2812_setleds_pin (struct cRGB *ledarray, uint16_t number_of_leds,uint8_t pinmask);
void ws2812_setleds_rgbw(struct cRGBW *ledarray, uint16_t number_of_leds);
/*
* Old interface / Internal functions
*
* The functions take a byte-array and send to the data output as WS2812 bitstream.
* The length is the number of bytes to send - three per LED.
*/
void ws2812_sendarray (uint8_t *array,uint16_t length);
void ws2812_sendarray_mask(uint8_t *array,uint16_t length, uint8_t pinmask);
/*
* Internal defines
*/
#if !defined(CONCAT)
#define CONCAT(a, b) a ## b
#endif
#if !defined(CONCAT_EXP)
#define CONCAT_EXP(a, b) CONCAT(a, b)
#endif
#define ws2812_PORTREG CONCAT_EXP(PORT,ws2812_port)
#define ws2812_DDRREG CONCAT_EXP(DDR,ws2812_port)
#endif /* LIGHT_WS2812_H_ */