t0中断方式定时-每秒钟使p10输出状态发生一次反转.lst

北航新c51单片机实验源代码

C51 COMPILER V7.50   T0中断方式定时_每秒钟使P10输砡状蘝发蒧_淮                             09/19/2005 23:50:23 PAGE 1   


C51 COMPILER V7.50, COMPILATION OF MODULE T0中断方式定时_每秒钟使P10输砡状蘝发蒧_淮
OBJECT MODULE PLACED IN T0中断方式定时-每秒钟使P10输出状态发生一次反转.OBJ
COMPILER INVOKED BY: d:\Keil\C51\BIN\C51.EXE T0中断方式定时-每秒钟使P10输出状态发生一次反转.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include <reg51.h>
   2          #define Tick   10000     // 10000 x 100μs = 1s
   3          #define T100us (256-50)  // 100us时间常数(6M)
   4          
   5          unsigned int C100us;     // 100μs计数单元
   6          bit LEDBuf;
   7          sbit LED = P1^0;
   8          
   9          void T0Int() interrupt 1 {  // T0中断服务程序
  10   1        C100us--;
  11   1        if (C100us == 0) {
  12   2          C100us = Tick;     // 100us计数器为0, 重置计数器
  13   2          LEDBuf = !LEDBuf;  // 取反LED
  14   2        }
  15   1      }
  16          
  17          void main() {
  18   1        TMOD = 0x02;   // 设置T0为工作方式2, 定时器
  19   1        TH0  = T100us;
  20   1        TL0  = T100us;
  21   1        IE   = 0x82;   // EA=1, IT0 = 1
  22   1        LEDBuf = 0;
  23   1        LED    = 0;
  24   1        C100us = Tick;
  25   1        TR0  = 1;      // 开始定时
  26   1        while (1) {
  27   2          LED = LEDBuf;
  28   2        }
  29   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     57    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      2    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =      1    ----
END OF MODULE INFORMATION.


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