RT501S/USER/7HC595.c

#include "includes.h"

unsigned char LastRxbuffer[13];

/**********************************************************************************
写入数据
in ：chip Num 接入IC个数   

**********************************************************************************/
 void Write_74HC595(unsigned char ChipNum,unsigned char *DataBuf)
{
    unsigned char i = 0;
    unsigned char DataBufTmp = 0;
	
    
    GPIO_ResetBits(HC595_RCK_PORT,HC595_RCK_PIN); //设置LCK 为低电平，上升沿数据锁存
    
    for(; ChipNum>0; ChipNum--)
    {
        DataBufTmp = *DataBuf;//0x88
			
				DataBufTmp=DataBufTmp | 0x11;////////////////////////////
			
        for(i=0; i<8; i++)
        {
            GPIO_ResetBits(HC595_SCK_PORT, HC595_SCK_PIN); //时钟低电平
            
            if (DataBufTmp & 0x80)
            {
                GPIO_SetBits(HC595_DATA_PORT, HC595_DATA_PIN);   //输出1
								
            }
            else
            {
                GPIO_ResetBits(HC595_DATA_PORT, HC595_DATA_PIN); //输出0
					
            }
						
            //HC595_delay(5);
						DelayMS(1);
            GPIO_SetBits(HC595_SCK_PORT, HC595_SCK_PIN); //时钟高电平，上升沿数据移位
   
            //HC595_delay(5);
            DelayMS(1);
						
            DataBufTmp = DataBufTmp << 1;
        }
				
        DataBuf++;
    }
		
    GPIO_SetBits(HC595_RCK_PORT, HC595_RCK_PIN);   //设置LCK 为高电平，上升沿数据锁存
    //HC595_delay(10);
		
		DelayMS(2);

    GPIO_ResetBits(HC595_RCK_PORT, HC595_RCK_PIN ); //	
} 

/********************************************************************************

并行数据读取，这里主要用于读取红外的状态
//CE始终接地
//PL 拉低    放入锁存器
//CP为高    上升沿移位

********************************************************************************/

unsigned char Read_74HC165(void)
{
		unsigned char i;
		unsigned char RetDat=0x00;
		//Dev74HC165_CP = 1;
		HC165_CP_HIGH;
		//Dev74HC165_PL = 0;
		HC165_PL_LOW;
		DelayMS(1);
		//Dev74HC165_PL = 1;
		HC165_PL_HIGH;
		DelayMS(3);
		if(HC165_DATA_READ == 1)
		RetDat = 0x01;
		for(i = 0; i < 7; i++)
		{
			RetDat <<= 1;	
			//Dev74HC165_CP = 0;
			HC165_CP_LOW;
			DelayMS(1);
			//Dev74HC165_CP = 1;
			HC165_CP_HIGH;
			
			DelayMS(1);			
			if(HC165_DATA_READ == 1)  //读取Q7脚
			{
				RetDat |= 0x01;
			}								
		}
		//Dev74HC165_CP = 0;
		HC165_CP_LOW;
		
		return RetDat;

}
/***************************************************************************
格式 查询
0xaa 0xbb cmd len(1) 故障码(1) addr(1)  data(1) crc(2) DD 55// LEN=11
***************************************************************************/
void QueryRecvProcess(unsigned char *rxbuffer)
{
	unsigned char data,i;
	unsigned short crc,CRC16;
	unsigned char Pack[11];
	unsigned char readbuf[4]={0x80,0x80,0x80,0x80};  //0x11
	int len=rxbuffer[3];	
	//先判断是否是本机及长度校验。 可在外层先判断是否是本机
	
	CRC16=crc16_calc(0xffff,rxbuffer,len-4); 
	
	crc=((unsigned short)rxbuffer[len-3]&0xff)<<8;
	crc+=(unsigned short)rxbuffer[len-4]&0xff;
	
	
	if(rxbuffer[4]!=sutProductPara.Addr){
			SlwTrace(INF,"addr erro",1);
			return ;
	}
	
	if(crc != CRC16 ) {
		
		SlwTrace(INF,"CRC erro",1);
		//CRC校验不对，不处理 
			return ;
	}
		
	if(rxbuffer[2]!=HOLDINGREG){
			
			SlwTrace(INF,"cmd error",1);
			 return;
	} 
	//Write_74HC595(4,readbuf); //红外全程打开
	data=Read_74HC165();
	//塞包 入数据
	Pack[0]=0xAA;
	Pack[1]=0xBB;
	Pack[2]=HOLDINGREG;
	Pack[3]=0x0B;
	Pack[4]=sutProductPara.Addr;//从机地址
	Pack[5]=0xEE;     //故障码 	
	Pack[6]=data;//红外状态
	               
	CRC16=crc16_calc(0xffff,Pack,7); 
	Pack[7] = (unsigned char)(CRC16 & 0xff);
	Pack[8] = (unsigned char)(CRC16 >> 8);
	Pack[9]=0xDD;
	Pack[10]=0x55;
	
	RS485_DIR_HIGH;
	
	for(i=0;i<11;i++)
	{
		USART_SendData(USART1,Pack[i]);
		while (USART_GetFlagStatus(USART1, USART_FLAG_TC) == RESET);
	}
	RS485_DIR_LOW;
	
}
 
/**************************************************************
格式
0xcc 0xdd cmd len(1) addr(1)  data(4)  crc(2) DD 55// LEN=13
**************************************************************/
void SetRecvProcess(unsigned char *rxbuffer)
{
	
	unsigned char i;
	unsigned char *pData=rxbuffer;
	unsigned char writebuf[4]={0};
	unsigned short crc,CRC16;
	int len=rxbuffer[3];
	
	char buf[30];
	
	SlwTrace(INF,rxbuffer,1);
	
	//if(0==memcmp(LastRxbuffer,rxbuffer,sizeof(LastRxbuffer)) return;
	
	if(0==memcmp(LastRxbuffer,rxbuffer,13)) return;
	
	memcpy(LastRxbuffer,rxbuffer,13);
	
//	CRC16=crc16_calc(0xffff,rxbuffer,9); 
//	rxbuffer[9] = (unsigned char)(CRC16 & 0xff);
//	rxbuffer[10] = (unsigned char)(CRC16 >> 8);

	//判断CRC
	CRC16=crc16_calc(0xffff,rxbuffer,len-4); 
	
	crc=((unsigned short)rxbuffer[len-3]&0xff)<<8;
	crc+=(unsigned short)rxbuffer[len-4]&0xff;
	
	if(crc != CRC16 || rxbuffer[4]!=sutProductPara.Addr){
		SlwTrace(INF,"crc or addrerro\r\n",1);
			return ;//CRC校验不对，不处理
	}
	
	if(rxbuffer[2]!=WRITESINGLEREG) {
		SlwTrace(INF,"cmd erro\r\n",1);
			return;
	}
	//设置灯状态
	SlwTrace(INF,"set led ",1);
	for(i=0;i<4;i++) writebuf[i]=pData[i+5];
	
	snprintf(buf,sizeof(buf),"%02x..%02x..%02x..%02x",writebuf[0],writebuf[1],writebuf[2],writebuf[3]);
	
	SlwTrace(INF,buf,1);

	Write_74HC595(4,writebuf);
	
}