NeoPixel_WS2812B.h

/*
*	Using SPI interface
*	SPI Bandwidth required 4.5Mbit/S
*/


#ifndef NEOPIXEL_WS2812B_H
#define NEOPIXEL_WS2812B_H

#include "stm32f1xx_hal.h"
#include "spi.h"

#define BIT1		0x78  // b 0111 1000
#define BIT0		0x60	// b 0110 0000


/*The lower limit for H*/
#define HUE_LOWER_LIMIT (0.0)
/*The upper limit for H*/
#define HUE_UPPER_LIMIT (360.0)


typedef enum
{
	BUSY = 0x00U,
	READY = 0x01U,
	UPDATE = 0x02U
} BSP_UpdateEnumDef;

typedef struct
{
	SPI_HandleTypeDef*	hspi;
	uint32_t*			pPixelBuffer;			/*!< 缓存指针        */
	uint8_t*			pSendBuffer;			/*!< 发送指针        */
	//uint8_t 			Brightness;			/*!< 亮度参数        */
	uint16_t           	PixelLen;			/*!< 像素数量        */
	uint16_t           	BuffLen;			/*!< 缓存长度        */
	__IO BSP_UpdateEnumDef    state;		/*!< 状态            */
} WS28_HandleTypeDef;


void WS28_init(WS28_HandleTypeDef *hws28);

// Color data covert.
/*
*	Converting RGB to 0xFFFFFF format color code.
*
*/uint32_t WS28_RGB2COLOR(uint8_t r, uint8_t g, uint8_t b);

/*
*	Converting HSL to 0xFFFFFF format color code.
*	Para: H - Hue 0~360,  S - Sat 0~100, L - Lightness 0~100
*
*/uint32_t WS28_HSL2COLOR(double H, double S, double L);

// Command function.
/*
*	Change current "lightness" for all LED.
*	Prarm: hws28 - WS2812 Handle,
*			scale - new lightness, 0~100
*
*/void WS28_SET_BRIGHTNESS(WS28_HandleTypeDef *hws28, uint8_t scale);

/*
*	Set color for all color pixel.
*	Prarm: hws28 - WS2812 Handle,
*			color - coverted color in 0xFFFFFF format.
*
*/void WS28_SET_COLOR_ALL(WS28_HandleTypeDef *hws28, uint32_t color);


/*
*	Set color for all color pixel.
*	Prarm: hws28 - WS2812 Handle,
*			pos - index of pixel, base 0.
*			color - coverted color in 0xFFFFFF format.
*
*/void WS28_SET_COLOR_PIXEL(WS28_HandleTypeDef *hws28, uint8_t pos, uint32_t color);


// Private Function, not declear for extern use.

//void WS28_COLOR2BIT(uint32_t color, uint8_t *colorbit);

//void WS28_REFRESH(WS28_HandleTypeDef *hws28);

#endif