C51 COMPILER V9.59.0.0   DS1302                                                            02/24/2024 21:37:53 PAGE 1   


C51 COMPILER V9.59.0.0, 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) DEBUG OBJE
                    -CTEXTEND 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.  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、�
             -�行速度和试题
   4              中对单片机时钟频率的要求，进行代码调试和修改。
   5          */
   6          #include "ds1302.h"
   7          #include "REG52.H"
   8          #include "intrins.h"
   9          sbit SCK = P1 ^ 7;
  10          sbit SDA = P2 ^ 3;
  11          sbit RST = P1 ^ 3;
  12          //
  13          void Write_Ds1302(unsigned char temp)
  14          {
  15   1        unsigned char i;
  16   1        for (i = 0; i < 8; i++)
  17   1        {
  18   2          SCK = 0;
  19   2          SDA = temp & 0x01;
  20   2          temp >>= 1;
  21   2          SCK = 1;
  22   2        }
  23   1      }
  24          
  25          //
  26          void Write_Ds1302_Byte(unsigned char address, unsigned char dat)
  27          {
  28   1        RST = 0;
  29   1        _nop_();
  30   1        SCK = 0;
  31   1        _nop_();
  32   1        RST = 1;
  33   1        _nop_();
  34   1        Write_Ds1302(address);
  35   1        Write_Ds1302(dat);
  36   1        RST = 0;
  37   1      }
  38          
  39          //
  40          unsigned char Read_Ds1302_Byte(unsigned char address)
  41          {
  42   1        unsigned char i, temp = 0x00;
  43   1        RST = 0;
  44   1        _nop_();
  45   1        SCK = 0;
  46   1        _nop_();
  47   1        RST = 1;
  48   1        _nop_();
  49   1        Write_Ds1302(address);
  50   1        for (i = 0; i < 8; i++)
  51   1        {
  52   2          SCK = 0;
  53   2          temp >>= 1;
C51 COMPILER V9.59.0.0   DS1302                                                            02/24/2024 21:37:53 PAGE 2   

  54   2          if (SDA)
  55   2            temp |= 0x80;
  56   2          SCK = 1;
  57   2        }
  58   1        RST = 0;
  59   1        _nop_();
  60   1        SCK = 0;
  61   1        _nop_();
  62   1        SCK = 1;
  63   1        _nop_();
  64   1        SDA = 0;
  65   1        _nop_();
  66   1        SDA = 1;
  67   1        _nop_();
  68   1        return (temp);
  69   1      }
  70          void Set_Rtc(unsigned char *ucRtc)
  71          {
  72   1        unsigned char i;
  73   1        Write_Ds1302_Byte(0x8e, 0x00); // 关闭写保护
  74   1        for (i = 0; i < 3; i++)
  75   1          Write_Ds1302_Byte(0x84 - 2 * i, ucRtc[i]);
  76   1        Write_Ds1302_Byte(0x8e, 0x80); // 打开写保护
  77   1      }
  78          void Read_Rtc(unsigned char *ucRtc)
  79          {
  80   1        unsigned char i;
  81   1        for (i = 0; i < 3; i++)
  82   1          ucRtc[i] = Read_Ds1302_Byte(0x85 - 2 * i);
  83   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    220    ----
   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)