/*
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* ws2812b.h
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*
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* Created on: Jan 6, 2023
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* Author: weihh
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*/
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#ifndef INC_WS2812B_H_
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#define INC_WS2812B_H_
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#include "stm32l4xx_hal.h"
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#define WS2812_NUM 3
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#define PIXEL_OFF 0 /* off */
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#define PIXEL_B (0xFF<<0) /* blue */
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#define PIXEL_R (0xFF<<8) /* red */
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#define PIXEL_G (0xFF<<16) /* green */
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#define PIXEL_W (0xFFFFFF) /* white */
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/* Composition of 24 bits data: GRB888
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* +----+----+----+----+----+----+----+----+----+
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* | G7 | ...| G0 | R7 | ...| R0 | B7 | ...| B0 |
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* +----+----+----+----+----+----+----+----+----+
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*/
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typedef struct pixel_s
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{
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uint32_t blue:8;
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uint32_t red:8;
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uint32_t green:8;
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} pixel_t;
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typedef union color_u
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{
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pixel_t pixel;
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uint32_t data;
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} color_t;
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extern void ws2812b_init(void);
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extern void ws2812b_reset(void);
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extern int ws2812b_turn(int which, color_t color);
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extern void ws2812b_blink(void);
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#endif /* INC_WS2812B_H_ */
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