bleSDK_expansion_board/projects/blezongkong/src/app_ws2812.c

#include "b6x.h"
#include "drvs.h"
#include "dbg.h"
#include "app_ws2812.h"


#define OUT_GRB_WS2812_DIN PA02

uint32_t ___WS2812_DIN___ =1<< OUT_GRB_WS2812_DIN;
//0x02 = 1<<PA01
#define WS2812_DIN_H GPIO_DAT_SET(___WS2812_DIN___)
#define WS2812_DIN_L GPIO_DAT_CLR(___WS2812_DIN___)

void GRB_WS2812_Init(void)
{
	gpio_dir_output(OUT_GRB_WS2812_DIN,OE_HIGH);
	gpio_dir_input(OUT_GRB_WS2812_DIN,IE_UP);
	gpio_put_hi(OUT_GRB_WS2812_DIN);
}

 void  GRB_WS2812_Reset(void)
{
	WS2812_DIN_L;
	bootDelayUs(80);
	WS2812_DIN_L;
}

void GRB_WS2812_Write_24Bits(uint32_t GRB888)
{
	uint32_t i;
	
	for(i=0x800000;i!=0;i>>=1){
		WS2812_DIN_H;
		if(GRB888 & i ){
			WS2812_DIN_H;WS2812_DIN_H;//880
			WS2812_DIN_H;WS2812_DIN_H;
		}
		else{
			WS2812_DIN_L;WS2812_DIN_L;//880
			WS2812_DIN_L;WS2812_DIN_L;
		}
		WS2812_DIN_L;
	}
	
}

void GRB_WS2812_Write_GRBs(uint8_t len, uint32_t *GRB888)
{
	
	while(len--)GRB_WS2812_Write_24Bits(*GRB888++);
	GRB_WS2812_Reset();
}

void GRB_WS2812_Write_color(uint8_t len, uint32_t GRB888)
{
	GRB_WS2812_Reset();
	while(len--)GRB_WS2812_Write_24Bits(GRB888);
}