C51 COMPILER V9.60.7.0   DS1302                                                            03/10/2025 18:03:53 PAGE 1   


C51 COMPILER V9.60.7.0, COMPILATION OF MODULE DS1302
OBJECT MODULE PLACED IN .\Objects\ds1302.obj
COMPILER INVOKED BY: D:\Keil_v5\C51\BIN\C51.EXE ..\driver\ds1302.c OPTIMIZE(8,SPEED) BROWSE INCDIR(..\driver;..\user) DE
                    -BUG OBJECTEXTEND PRINT(.\Listings\ds1302.lst) TABS(2) OBJECT(.\Objects\ds1302.obj)

line level    source

   1          /*  #   DS1302代码片段说明
   2                  1.  本文件夹中提供的驱动代码供参赛选手完成程序设计参考。
   3                  2.
   4             参赛选手可以自行编写相关代码或以该代码为基础，根据所选单片机类型、运�
             -��速度和试题
   5                          中对单片机时钟频率的要求，进行代码调试和修改。
   6          */
   7          #include "ds1302.h"
   8          
   9          #include "intrins.h"
  10          sbit SDA = P2 ^ 3;
  11          sbit RST = P1 ^ 3;
  12          sbit SCK = P1 ^ 7;
  13          //
  14          void Write_Ds1302(unsigned char temp)
  15          {
  16   1        unsigned char i;
  17   1        for (i = 0; i < 8; i++)
  18   1        {
  19   2          SCK = 0;
  20   2          SDA = temp & 0x01;
  21   2          temp >>= 1;
  22   2          SCK = 1;
  23   2        }
  24   1      }
  25          
  26          //
  27          void Write_Ds1302_Byte(unsigned char address, unsigned char dat)
  28          {
  29   1        RST = 0;
  30   1        _nop_();
  31   1        SCK = 0;
  32   1        _nop_();
  33   1        RST = 1;
  34   1        _nop_();
  35   1        Write_Ds1302(address);
  36   1        Write_Ds1302(dat);
  37   1        RST = 0;
  38   1      }
  39          
  40          //
  41          unsigned char Read_Ds1302_Byte(unsigned char address)
  42          {
  43   1        unsigned char i, temp = 0x00;
  44   1        RST = 0;
  45   1        _nop_();
  46   1        SCK = 0;
  47   1        _nop_();
  48   1        RST = 1;
  49   1        _nop_();
  50   1        Write_Ds1302(address);
  51   1        for (i = 0; i < 8; i++)
  52   1        {
  53   2          SCK = 0;
C51 COMPILER V9.60.7.0   DS1302                                                            03/10/2025 18:03:53 PAGE 2   

  54   2          temp >>= 1;
  55   2          if (SDA)
  56   2            temp |= 0x80;
  57   2          SCK = 1;
  58   2        }
  59   1        RST = 0;
  60   1        _nop_();
  61   1        SCK = 0;
  62   1        _nop_();
  63   1        SCK = 1;
  64   1        _nop_();
  65   1        SDA = 0;
  66   1        _nop_();
  67   1        SDA = 1;
  68   1        _nop_();
  69   1        return (temp);
  70   1      }
  71          // 十进制 11 -> 0x11
  72          void Set_Rtc(unsigned char *ucRtc)
  73          {
  74   1        unsigned char i;
  75   1        unsigned char temp;
  76   1        Write_Ds1302_Byte(0x8e, 0x00);
  77   1        Write_Ds1302_Byte(0x80, 0x80);
  78   1        for (i = 0; i < 3; i++)
  79   1        {
  80   2      
  81   2          temp = (ucRtc[i] / 10) * 16 + ucRtc[i] % 10;
  82   2          Write_Ds1302_Byte(0x84 - 2 * i, temp);
  83   2        }
  84   1        Write_Ds1302_Byte(0x8e, 0x80);
  85   1      }
  86          // 十进制 0x11 -> 11
  87          void Read_Rtc(unsigned char *ucRtc)
  88          {
  89   1        unsigned char i;
  90   1        unsigned char temp;
  91   1        for (i = 0; i < 3; i++)
  92   1        {
  93   2          temp = Read_Ds1302_Byte(0x85 - 2 * i);
  94   2          ucRtc[i] = temp / 16 * 10 + temp % 16;
  95   2        }
  96   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    222    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----       6
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


C51 COMPILATION COMPLETE.  0 WARNING(S),  0 ERROR(S)