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