11.lst

单片机定时器的应用

C51 COMPILER V7.08   11                                                                    03/02/2008 22:17:42 PAGE 1   


C51 COMPILER V7.08, COMPILATION OF MODULE 11
OBJECT MODULE PLACED IN 11.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE 11.C BROWSE DEBUG OBJECTEXTEND

line level    source

   1          //采用10MHZ晶振，在p1.0上输出周期为2.5s，占空比为20%的脉冲信号
   2          
   3          #include<reg51.h>
   4          sbit P1_0=P1^0;
   5          #define uchar unsigned char
   6           uchar time;
   7           uchar period=250;
   8           uchar high=50;
   9           time0() interrupt 1 using 1
  10          {TH0=-8333/256;
  11   1      TL0=-8333/256;
  12   1      if(++time==high)P1=0;
  13   1      else if(time==period)
  14   1        {time=0;
  15   2        P1=1;}
  16   1      }
  17           main()
  18          {TMOD=0x01;
  19   1      P1_0=0;
  20   1      TH0=-(8333/256);
  21   1      TL0=-(8333/256);
  22   1      EA=1;
  23   1      ET0=1;
  24   1      TR0=1;
  25   1      do{}while(1);
  26   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     57    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      3    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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