s3int1.lst

51单片机示例程序

C51 COMPILER V7.20   S3INT1                                                                03/15/2007 14:42:15 PAGE 1   


C51 COMPILER V7.20, COMPILATION OF MODULE S3INT1
OBJECT MODULE PLACED IN S3INT1.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE S3INT1.C BROWSE DEBUG OBJECTEXTEND

line level    source

   1          /**************************************************
   2          
   3                           按键外部中断实验                                                               
   4                       http://www.kaifaban.com
   5          
   6                    功能:S3按下时,LED左移1位
   7          
   8          ***************************************************/
   9          #include <reg52.h>
  10          #include <intrins.h>
  11          #define uchar unsigned char
  12          uchar Status=0xFE; //初始状态最后一个LED亮
  13          sbit DsySelect=P3^7; //控制LED的74HC244所在IO口
  14          //外部中断1中断程序
  15          void INT0Int() interrupt 2 using 1
  16          {
  17   1      Status=_crol_(Status,1); //循环左移1位
  18   1      }
  19          //主程序
  20          main(){
  21   1      DsySelect=0;//打开LED
  22   1      EX1=1;//允许外部中断1
  23   1      IT1=1;//外部中断1配置为下降沿触发
  24   1      EA=1;//开总中断
  25   1      while(1){
  26   2      P0=Status;
  27   2      }
  28   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     38    ----
   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)