timer.lst

基于ARM的时钟中断程序

C51 COMPILER V8.02   TIMER                                                                 04/15/2008 18:52:58 PAGE 1   


C51 COMPILER V8.02, COMPILATION OF MODULE TIMER
OBJECT MODULE PLACED IN timer.OBJ
COMPILER INVOKED BY: d:\Keil\C51\BIN\C51.EXE timer.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          // File Name: timer.c
   2          // Header: 利用定时器实现每隔1秒LED亮灭变化
   3          // Author: Wang Xiaorong
   4          // Date:20070406
   5          #include <REGX51.H>
   6          unsigned char t;
   7          
   8          main()
   9          {   
  10   1              IE = 0x82;
  11   1              TMOD = 0x01;                 //?1
  12   1              TL0 = (65536 - 50000)%256;   //?
  13   1              TH0 = (65536 - 50000)/256;   //?
  14   1              TR0 = 1;                     //?    
  15   1              while(1);
  16   1      }
  17          
  18          Timer0() interrupt 1
  19          {       
  20   1              TL0 = (65536 - 50000)%256;   //?
  21   1              TH0 = (65536 - 50000)/256;   //?
  22   1              t++;
  23   1              if(20 == t)
  24   1              {
  25   2                      t =0;
  26   2                      P1_0 =!P1_0;
  27   2              }
  28   1      }
  29          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     43    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      1    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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