20080814.lst

定时器的应用

C51 COMPILER V7.50   20080814                                                              09/21/2008 10:25:34 PAGE 1   


C51 COMPILER V7.50, COMPILATION OF MODULE 20080814
OBJECT MODULE PLACED IN 20080814.OBJ
COMPILER INVOKED BY: F:\软件\keil\C51\BIN\C51.EXE 20080814.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include<regx52.h>
   2          #define  uchar unsigned char
   3          #define  uint unsigned int
   4          
   5          sbit LED_G=P3^2;
   6          
   7          void init()//初始化函数
   8          {
   9   1       TH0=(65536-50000)/256;//50MS定时 (用12M的晶振)---高8位
  10   1       TL0=(65536-50000)%256;//低8位
  11   1       TMOD=0x01;
  12   1       ET0=1;
  13   1      }
  14          
  15          void main (void){
  16   1       uchar time;
  17   1       init(); //调用初始化函数
  18   1      
  19   1       LED_G=1;  
  20   1      while(1){
  21   2              while(TF0){
  22   3                        TH0=(65536-50000)/256;
  23   3                    TL0=(65536-50000)%256;
  24   3                    TF0=0; 
  25   3                    if(time<20){time=time+1;}
  26   3                        else {time=0;LED_G=!LED_G;}
  27   3                            }
  28   2      
  29   2      
  30   2               }
  31   1                      }  


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     46    ----
   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)