70 lines
2 KiB
C
70 lines
2 KiB
C
/**
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* The MIT License (MIT)
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*
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* Copyright (c) 2016 sheinz (https://github.com/sheinz)
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifndef __WS2812_I2S_H__
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#define __WS2812_I2S_H__
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#include <stdint.h>
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#include <stdbool.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef union {
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struct {
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uint8_t blue; //LSB
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uint8_t green;
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uint8_t red;
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uint8_t white;
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};
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uint32_t color; // 0xWWRRGGBB
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} ws2812_pixel_t;
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typedef enum {
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PIXEL_RGB = 12,
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PIXEL_RGBW = 16
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} pixeltype_t;
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/**
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* Initialize i2s and dma subsystems to work with ws2812 led strip.
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*
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* Please note that each pixel will take 12 bytes of RAM.
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*
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* @param pixels_number Number of pixels in the strip.
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*/
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int ws2812_i2s_init(uint32_t pixels_number, pixeltype_t type);
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/**
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* Update ws2812 pixels.
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*
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* @param pixels Array of 'pixels_number' pixels. The array must contain all
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* the pixels.
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*/
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void ws2812_i2s_update(ws2812_pixel_t *pixels, pixeltype_t type);
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#ifdef __cplusplus
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}
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#endif
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#endif // __WS2812_I2S_H__
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