TEST/TEST_Prj/stm32_SmartLed_proprj/Demo/USER/sk9822.c

#include "sk9822.h"


//写一个字节数据函数  
void SK9822_Write_Byte(unsigned char Data)
{
//       unsigned char i=0;
//       for(i=0;i<8;i++)
//       {
//                //SDI=(Data&0x80)>>7;
//                if(Data&0x80)
//                {
//                    SK9822_SDI_PIN_H();
//                }else
//                {
//                    SK9822_SDI_PIN_L();
//                }
//                Data<<=1; 	  
//		delay_us(1);   
//		SK9822_SCK_PIN_H();
//		delay_us(1); 
//		SK9822_SCK_PIN_L();
//		delay_us(1);
//       }
			unsigned char i;
			unsigned char txdata=Data;
     for(i = 0; i < 8; i++)
     {
         SK9822_SCK_PIN_L();
         delay_us(1);
         //数据发送 
         if(txdata & 0x80){        
            SK9822_SDI_PIN_H();
         }else{
              SK9822_SDI_PIN_L();
         }
         txdata <<= 1;
         delay_us(1);
         SK9822_SCK_PIN_H();
         delay_us(1);
     }
      SK9822_SCK_PIN_L();
}
//函数名称：SK9822写数据函数 
//输入参数：Bri 亮度调整  高3位固定为1  取值范围00000-11111
//输入参数：RED 红色灰度值  取值范围0-255
//输入参数：GREEN 绿色灰度值
//输入参数：BLUE 蓝色灰度值
void SK9822_Write_Data(unsigned char Bri,unsigned char RED,unsigned char GREEN,unsigned char BLUE)
{
	
        SK9822_Write_Byte(0x00);//写开始帧 
	SK9822_Write_Byte(0x00);
	SK9822_Write_Byte(0x00);
	SK9822_Write_Byte(0x00);
        SK9822_Write_Byte(Bri);//写亮度值
	SK9822_Write_Byte(BLUE);//写蓝色灰度
	SK9822_Write_Byte(GREEN);//写绿色灰度
	SK9822_Write_Byte(RED);//写红色灰度

        SK9822_Write_Byte(0xFF);//写结束帧
	SK9822_Write_Byte(0xFF);
	SK9822_Write_Byte(0xFF);
	SK9822_Write_Byte(0xFF);
}

void SK9822_Intit(void)
{
 	GPIO_InitTypeDef  GPIO_InitStructure;
	RCC_APB2PeriphClockCmd(SK9822_RCC, ENABLE);	 //使能A端口时钟
	GPIO_InitStructure.GPIO_Pin =SK9822_SCK_PIN|SK9822_SDI_PIN;	 
 	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; 		 //推挽输出
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;//速度50MHz
 	GPIO_Init(SK9822_PORT, &GPIO_InitStructure);	  //初始化GPIOB
 	GPIO_SetBits(SK9822_PORT,SK9822_SCK_PIN|SK9822_SDI_PIN);	
    SK9822_Write_Data(255,0,0,0);
}