ds1302.c

DS1302 自己写的,大家合适的给个评价吧

#include <AT89X55.H>
#include <DS1302.H>
#include <SPI.h>
#include <8255.h>
#include <ABSACC.H>


struct Time RTC_REG={0,0,  0,1,  7,0,  5,2,  1,0,  5,0,  5,8, 0,8};
					//S    Min   H     Date  M     Day   Y    WP

void RTC_Init (void)
{unsigned char *P;
 
P=&RTC_REG.Sec_Reg;
Write_RTC (P, 8);

}

unsigned char Read_RTC_One_Byte (unsigned char Reg_Adress)
{unsigned char cDate;

 DS1302_RST_H();												//SCK=0    RST=1

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

 SPI_WriteOneByte(Reg_Adress);

 cDate= ( SPI_ReadOneByte() );

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

 DS1302_RST_L();												//RST=0

 return (cDate);
}														




void Write_RTC_One_Byte (unsigned char Reg_Adress,unsigned char cData)													
{

 DS1302_RST_H();												//SCK=0    RST=1

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



/****************		8DS1302 Write Protect turn off			****************/
 SPI_WriteOneByte(DS1302_WP_REG_Write);

 SPI_WriteOneByte(DS1302_Control_Write_Enable);
/*******************************************************************************/

 DS1302_RST_H();												//SCK=0    RST=1
 DS1302_RST_L();												//RST=0

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

 SPI_WriteOneByte(Reg_Adress);

 SPI_WriteOneByte(cData);

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

 DS1302_RST_L();												//RST=0
}










/*
*********************************************************************************************
*                                       	Write RTC	
*
* Description:  Write RTC
*
* Arguments  : dataVector		is the start address of the RTC (DS1302)
*			   dataNum			is the number of data to be written to RTC
*
*			   			   
* Returns    : none
*
* Notes      : struct RTC
				{unsigned char Sec_Reg;
 				 unsigned char _10Sec_Reg;
 				 unsigned char Min_Reg;
  				 unsigned char _10Min_Reg;
  				 unsigned char HR_Reg;
  				 unsigned char _10HR_Reg;
  				 unsigned char DATE_Reg;
  				 unsigned char _10DATE_Reg;
  				 unsigned char MONTH_Reg;
  				 unsigned char _10MONTH_Reg;
  				 unsigned char DAY;
  				 unsigned char _10DAY;
  				 unsigned char YEAR_Reg;
  				 unsigned char _10YEAR_Reg;
  				 unsigned char CONTROL_Reg_L;
  				 unsigned char CONTROL_Reg_H;
 				 };
*			   
* 
**********************************************************************************************
*/


void Write_RTC (unsigned char *dataVector, unsigned char dataNum)
{unsigned char cLoop;
 unsigned char cDate;

 DS1302_RST_H();												//SCK=0    RST=1



/****************		8DS1302 Write Protect turn off			****************/
 SPI_WriteOneByte(DS1302_WP_REG_Write);

 SPI_WriteOneByte(DS1302_Control_Write_Enable);
/*******************************************************************************/
/*******************************************************************************/


 DS1302_RST_L();												//RST=0
 DS1302_RST_H();												//SCK=0    RST=1

/****************		Burst Write RTC							****************/


 SPI_WriteOneByte(DS1302_RTC_Burst_Write);								//Write command Burst_Write

 for ( cLoop=0 ; cLoop<dataNum ; cLoop++,dataVector++ )
 		{		
		cDate =  *dataVector & 0x0F;
		dataVector++;
		cDate |=  ( (*dataVector) << 4 );								//Hight 4 Bit & Low 4 Bit
		SPI_WriteOneByte(cDate);
		}

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


 DS1302_RST_L();												//RST=0

}

















/*
*********************************************************************************************
*                                       	Read RTC	
*
* Description:  Read RTC
*
* Arguments  :
*
*			   			   
* Returns    : none
*
* Notes      : It will write array like Fig
*Fig:			struct RTC
				{unsigned char Sec_Reg;
 				 unsigned char _10Sec_Reg;
 				 unsigned char Min_Reg;
  				 unsigned char _10Min_Reg;
  				 unsigned char HR_Reg;
  				 unsigned char _10HR_Reg;
  				 unsigned char DATE_Reg;
  				 unsigned char _10DATE_Reg;
  				 unsigned char MONTH_Reg;
  				 unsigned char _10MONTH_Reg;
  				 unsigned char DAY;
  				 unsigned char _10DAY;
  				 unsigned char YEAR_Reg;
  				 unsigned char _10YEAR_Reg;
  				 unsigned char CONTROL_Reg_L;
  				 unsigned char CONTROL_Reg_H;
 				 };
*			   
* 
**********************************************************************************************
*/


void Read_RTC (void)
{unsigned char cLoop;
 unsigned char *P;
 unsigned char cDate;

 DS1302_RST_H();												//SCK=0    RST=1

/****************				Burst Read RTC					****************/

 P=&RTC_REG.Sec_Reg;
 SPI_WriteOneByte(DS1302_RTC_Burst_Read);						//Write command Burst_Read

 for ( cLoop=0;cLoop<8;cLoop++,P++ )
 		{
   		cDate= ( SPI_ReadOneByte() );
		*P= cDate & 0x0F;										//Low 4 to 
		P++;
		*P = ( (cDate & 0xF0) >> 4 );							//Hight 4 to
		}

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

 DS1302_RST_L();												//RST=0


}






















/*
*********************************************************************************************
*                                       	BCD_2_ASCII	
*
* Description: Conver BCD to ASCII
*
* Arguments  : dataVector		is the start address of the array (BCD)
*			   dataNum			is the length of the array
*
* Returns    : none
*
* Notes      : 
*
*			
**********************************************************************************************
*/
void BCD_2_ASCII (unsigned char *dataVector, unsigned char dataNum)
{unsigned char cLoop;
 //unsigned char *P;
 //P=&RTC_REG.Sec_Reg;
 for ( cLoop=0;cLoop < dataNum;cLoop++,dataVector++ )
 *dataVector += 0x30;
}