Clock chip ds1302 program, debugging passed (reprint)

#ifndef _DS1302_H
#define _DS1302_H

#ifndef __C8051F020_H__
#include 8051f020.h>
#endif

#ifndef _MACRO_H
#include "macro.h"
#endif

sbit ACC0 = ACC ^ 0;
sbit ACC7 = ACC ^ 7;

sbit DSRST = P2 ^ 7; // Clock reset signal line
sbit DSDIO = P2 ^ 6; // Clock data line
sbit DSCLK = P2 ^ 5; // Clock line


#define SEC_WRI 0x80
#define SEC_READ 0x81
#define MIN_WRI 0x82
#define MIN_READ 0x83
#define HR_WRI 0x84
#define HR_READ 0x85
#define DATE_WRI 0x86
#define DATE_READ 0x87
#define MON_WRI 0x88
#define MON_READ 0x89
#define WEEK_WRI 0x8A
#define WEEK_READ             0x8B
#define YEAR_WRI              0x8C
#define YEAR_READ             0x8D
#define WRI_PROTECT_WRI       0x8E
#define WRI_PROTECT_READ      0x8F
#define CLOCK_MULTI_BYTE_WRI  0xBE
#define CLOCK_MULTI_BYTE_READ 0xBF
#define RAM_MULTI_BYTE_WRI    0xFE
#define RAM_MULTI_BYTE_READ   0xFF

#define DSRSTLOW()      DSRST = 0; _nop_(); _nop_(); _nop_(); _nop_();\
                        _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); \
                        _nop_(); _nop_(); _nop_(); _nop_(); _nop_()

#define DSRSTHIGH()     DSRST = 1; _nop_(); _nop_(); _nop_(); _nop_();\
                        _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); \
                        _nop_(); _nop_(); _nop_(); _nop_(); _nop_()

#define DSCLKLOW()      DSCLK = 0; _nop_(); _nop_(); _nop_(); _nop_();\
                        _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); \
                        _nop_(); _nop_(); _nop_(); _nop_(); _nop_()
#define DSCLKHIGH()     DSCLK = 1; _nop_(); _nop_(); _nop_(); _nop_();\
                        _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); \
                        _nop_(); _nop_(); _nop_(); _nop_(); _nop_()

extern uchar xdata dsWriDsI ;
extern uchar xdata dsWriCh  ;

extern uchar xdata dsReadDsK ;
extern uchar xdata dsReadCl  ;

extern uchar xdata ds1302SettimerBuffer[];
extern uchar xdata ds1302GettimerBuffer[];

void WriDs(uchar addr, uchar dat);
uchar ReadDs(uchar addr);

void SetTimer(uchar *pSetTimer);
void GetTimer(uchar *pGetTimer);

void OscEnable();
void Osc24();
void ChargeEnable();
void DsInit();

#endif
#include "DS1302.h"
#include


/********************************************************************
*
* 名称: OscEnable
* 说明:
* 功能: 时钟停止位使能
* call: v_W1302
* in:   no
* return:no
*********************************************************************/
void OscEnable()
{
     WriDs(0x80,0);
}

/********************************************************************
*
* name: Osc24
* state:
* fun:  use 24 hour record
* call: v_W1302
* in:   no
* return:no
*********************************************************************/
void Osc24()
{
     WriDs(0x84,0);
}

/********************************************************************
*
* 名称: ChargeEnable
* state:
* fun : 涓流充电使能
* Call : v_W1302
* in: no
* Return value : None
********************************************************************/
void ChargeEnable()
{
     WriDs(0x90,0xa5); /* Trickle charge, a diode, a 2k resistor */
}

/************************************************************************
*
* Name : DsInit()
* Description :
* fun :   Clock chip initialization
* call: No
* in: no
* return: no
*********************************************************************/
void DsInit()
{
     //T_CLK = 0;
     //T_RST = 0;
     //_nop_();
     //T_RST = 1;
     DSCLKLOW();
     DSRSTLOW();
     DSRSTHIGH();
     OscEnable(); /* Clock stop bit enable       */
     WriDs(0x8e,0x0); /* Allow writing of single data byte */
     ChargeEnable(); /* Charge enable             */
     Osc24();
}

/**************************************************
* Prototype: void WriteDS(uchar addr, uchar dat)
* Function: write data to ds1302 clock chip
* Description: None
* Parameter: dat write data; addr write address
* Return: None
******************************************************/
void WriDs(uchar addr, uchar dat)
{
    //uchar dsWriDsI;
    //uchar dsWriCh = 0x01;
    dsWriDsI = 0;
    dsWriCh = 0x01;
    EA = 0;
    DSCLKLOW();
    DSRSTLOW();
    DSRSTHIGH();
    for(dsWriDsI = 0; dsWriDsI < 8; dsWriDsI ++)
      {
            if(addr & dsWriCh)
            {
                DSDIO = 1;
            }
            else
            {
               DSDIO = 0;
            }
            dsWriCh = dsWriCh << 1;
            DSCLKHIGH();
            DSCLKLOW();
      }
      dsWriCh = 0x01;
      for(dsWriDsI = 0; dsWriDsI < 8; dsWriDsI ++)
      {
            if(dat & dsW riCh)
            {
                DSDIO = 1;
            }
            else
            {
                DSDIO = 0;
            }
            dsWriCh = dsWriCh << 1;
            DSCLKHIGH();
            DSCLKLOW();
      }
    DSRSTLOW();
    EA = 1;
}

/**************************************************
* Prototype: uchar ReadDS(uchar addr)
* Function: read ds clock content
* Description: None
* Parameter: internal register address
* Return: register content
**************************************************/
uchar ReadDs(uchar addr)
{
    //uchar dsReadDsK;
    //uchar dsReadCl;
    dsReadDsK = 0;
    dsReadCl = 0;

    DSRSTLOW();
    DSCLKLOW();
    DSRSTHIGH();
    dsReadCl = 0x01;
    for(dsReadDsK = 0; dsReadDsK < 8; dsReadDsK ++)
      {
          if(addr & dsReadCl)
          {
              DSDIO = 1;
          }
          else
          {
              DSDIO = 0;
          }
          dsReadCl = dsReadCl << 1;
          DSCLKHIGH();
          DSCLKLOW();
      }
    dsReadCl = 0;
    for(dsReadDsK = 0; dsReadDsK < 8; dsReadDsK ++)
      {
          dsReadCl = dsReadCl >> 1;
          if(DSDIO)
          {
              dsReadCl = dsReadCl + 0x80;
          }
          DSCLKHIGH();
          D SCLKLOW();
      }
    DSRSTLOW();
    return(dsReadCl);
}

void SetTimer(uchar *pSetTimer)
{
    WriDs(YEAR_WRI, *(pSetTimer + 0));
    WriDs(MON_WRI , *(pSetTimer + 1));
    WriDs(DATE_WRI, *(pSetTimer + 2));
    WriDs(HR_WRI , *(pSetTimer + 3));
    WriDs(MIN_WRI , *(pSetTimer + 4));
    WriDs(SEC_WRI , *(pSetTimer + 5));
}

void GetTimer(uchar *pGetTimer)
{
    *(pGetTimer + 0) = ReadDs(YEAR_READ);
    *(pGetTimer + 1) = ReadDs(MON_READ);
    *(pGetTimer + 2) = ReadDs( DATE_READ);
    *(pGetTimer + 3) = ReadDs(HR_READ);
    *(pGetTimer + 4) = ReadDs(MIN_READ);
    *(pGetTimer + 5) = ReadDs(SEC_READ);
}