6.3.lst

这本书里共11章

C51 COMPILER V7.09   6_3                                                                   08/24/2005 09:28:58 PAGE 1   


C51 COMPILER V7.09, COMPILATION OF MODULE 6_3
OBJECT MODULE PLACED IN 6.3.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE 6.3.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include<reg52.h>
   2          sbit T_CLK = P2^7;                 //实时时钟时钟线引脚 
   3          sbit T_IO = P1^4;                   //实时时钟数据线引脚 
   4          sbit T_RST = P1^5;                  //实时时钟复位线引脚 
   5          
   6          //往DS1302写入1Byte数据，输入: ucDa 写入的数据
   7          
   8          void main()
   9          {
  10   1      unsigned char ucDa,cAddr,ucAddr,ACC0,ACC1;
  11   1      
  12   1      
  13   1      
  14   1      
  15   1      unsigned char i;
  16   1      ACC = ucDa;
  17   1      for(i=8; i>0; i--)
  18   1      {
  19   2      T_IO = ACC0;                  
  20   2      T_CLK = 1;
  21   2      T_CLK = 0;
  22   2      ACC = ACC >> 1; 
  23   2      } 
  24   1      
  25   1      //从DS1302读取1Byte数据，返回值: ACC
  26   1      
  27   1      
  28   1      for(i=8; i>0; i--)
  29   1      {
  30   2      ACC = ACC >>1;                      
  31   2      ACC1 = T_IO;
  32   2      T_CLK = 1;
  33   2      T_CLK = 0;
  34   2      } 
  35   1      
  36   1      
  37   1      //往DS1302写入数据
  38   1      
  39   1      
  40   1      T_RST = 0;
  41   1      T_CLK = 0;
  42   1      T_RST = 1;
  43   1      //v_RTInputByte(ucAddr);                    //地址，命令 
  44   1      //v_RTInputByte(ucDa);                      //写1Byte数据
  45   1      T_CLK = 1;
  46   1      T_RST =0;
  47   1      
  48   1      
  49   1      //读取DS1302某地址的数据
  50   1      
  51   1      
  52   1      T_RST = 0;
  53   1      T_CLK = 0;
  54   1      T_RST = 1;
  55   1      //v_RTInputByte(ucAddr);                    //地址，命令 
C51 COMPILER V7.09   6_3                                                                   08/24/2005 09:28:58 PAGE 2   

  56   1      //ucDa = uc_RTOutputByte();                 //读1Byte数据 
  57   1      T_CLK = 1;
  58   1      T_RST =0;
  59   1      
  60   1      }
*** WARNING C280 IN LINE 10 OF 6.3.C: 'cAddr': unreferenced local variable
*** WARNING C280 IN LINE 10 OF 6.3.C: 'ucAddr': unreferenced local variable
  61          
  62          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     55    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----       5
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


C51 COMPILATION COMPLETE.  2 WARNING(S),  0 ERROR(S)