#ifndef _DS1302_h
   #define _DS1302_h
  
   #include "c8051f340.h"
   #include "intrins.h" 
  
   #define  NOP  _nop_()
   #define  uchar   unsigned char
   sbit    IO=P3^1;
   sbit    SCLK=P3^2;
   sbit    RSTB=P3^3;
   
   void  delay(uchar i)
    { 
     while (--i);
	}

//*****************************RESET  FUNCTION///////////////
   void reset()
   {
	    RSTB=0;
	    SCLK=0;
	    delay(100);
	    RSTB=1;
		delay(100);
   }
//***************************BYTE  WRITE************//
void  wbyte(uchar w_byte)
{
	uchar i;
	for(i=0;i<8;++i)
	{ 
		IO=0;
		if(w_byte&0x01) IO=1;
		SCLK=0;
		delay(20);
		SCLK=1;
		delay(20);
		w_byte>>=1;
	
	}
}
//***********************	 BYTE READ******************//
uchar rbyte()
{
	uchar i;
	uchar R_BYTE;
	uchar TMPBYTE;
	R_BYTE=0X00;
	IO=1;
	for(i=0;i<8;++i)
	{
	   
		SCLK=1;
		delay(20);
	    SCLK=0;
		NOP;
		TMPBYTE=(uchar)IO;
		TMPBYTE<<=7;
		R_BYTE>>=1;
		R_BYTE|=TMPBYTE;
		delay(20);
	}
	return(R_BYTE);
}

uchar time_data[8]={1,1,1,1,1,1,1,1};//sec,min,hrs,dte,mon,day,yr
uchar time_diplay[14]={0x31,0x35,0x38,0x32,0x39,0x33,0x34,0x33,0x32,0x37,0x31};

//*********************時(shí)間初始校準(zhǔn)與初始化**************************************//
void time_int_DS1302()      //24小時(shí)模式
{	
	uchar time[8]={0,0,0x12,1,1,1,0,0};//sec,min,hrs,dte,mon,day,yr
//	uchar i;
	reset();
	wbyte(0x8e);//寫保護(hù)控制寄存器
	wbyte(0);//允許寫入
	reset();
	wbyte(0x90); //涓流充電控制寄存器
	wbyte(0);    //禁止充電
	reset();
	wbyte(0x80);  //秒         //2000年1月1日12點(diǎn)0分13秒 星期一
	wbyte(0x13);
	reset(); 
    wbyte(0x82);  //分
    wbyte(0x00);
	reset(); 
	wbyte(0x84);  //HR
    wbyte(0x12);
	reset(); 
	wbyte(0x86);  //DATA
    wbyte(0x00);
	reset(); 
	wbyte(0x88);  //MOUTH
    wbyte(0x00);
	reset(); 
	wbyte(0x8A);  //DAY
    wbyte(0x00);
    reset(); 
	wbyte(0x8C);  //YEAR
    wbyte(0x20);
    reset(); 
//	for(i=0;i<8;i++) 
//	wbyte(time[i]);    
//	reset();
}
//****************************************************************************
//****************DS1302顯示數(shù)據(jù)	 ASCII碼數(shù)字轉(zhuǎn)化	   ***********************/
//******************************************************************************

void  display_xlat()
{ 	
	uchar i,j=0,num1,num2;
	for(i=0;i<7;i++)
	{  
		num1=time_data[i]&0x0F;
		num2=time_data[i];
		num2>>=4;
		time_diplay[j]=num1+0x30;
		time_diplay[j+1]=num2+0x30;
		j+=2;
	}
}
//**********************時(shí)間顯示***************************************
void  time_display_DS1302()
{  
//	uchar i;
	reset();
	wbyte(0x81); //burst read          
	//for(i=0;i<8;i++) 
	time_data[0]=rbyte();    
	reset();
	// display_xlat();
}
#endif