text1.lst

基于AT89C51系列单片机的按键识别的C51程序按键中断识别.rar

C51 COMPILER V7.50   TEXT1                                                                 09/04/2006 19:25:15 PAGE 1   


C51 COMPILER V7.50, COMPILATION OF MODULE TEXT1
OBJECT MODULE PLACED IN Text1.OBJ
COMPILER INVOKED BY: D:\Program Files\Keil\C51\BIN\C51.EXE Text1.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include<reg52.h>
   2          
   3          unsigned char code table[]={0x3f,0x06,0x5b,0x4f,0x66, 
   4                                      0x6d,0x7d,0x07,0x7f,0x6f};
   5          unsigned char dispcount=0;       //计数
   6          sbit gewei=P2^0;               //个位选通定义
   7          sbit shiwei=P2^1;              //十位选通定义
   8          void Delay(unsigned int tc)     //延时程序
   9          {
  10   1              while( tc != 0 )                        
  11   1              {
  12   2                      unsigned int i;                 
  13   2                      for(i=0; i<100; i++);   
  14   2                      tc--;                                   
  15   2              }
  16   1      }
  17          void ExtInt0() interrupt 0    //中断服务程序
  18          {
  19   1         dispcount++;           //每按一次中断按键，计数加一
  20   1         if(dispcount==100)     //计数范围0-99
  21   1          {dispcount=0;}
  22   1      }
  23          void LED()                  //LED显示函数
  24          {
  25   1        if(dispcount>=10)         //显示两位数
  26   1        {
  27   2                 shiwei=0;
  28   2                 P0=table[dispcount/10];
  29   2                 Delay(8);
  30   2                 shiwei=1;
  31   2                 gewei=0;
  32   2                 P0=table[dispcount%10];
  33   2                 Delay(5);  
  34   2                 gewei=1;
  35   2         }
  36   1         else                    //显示一位数
  37   1         {
  38   2                 shiwei=1;
  39   2                 gewei=0;
  40   2                 P0=table[dispcount];
  41   2                 Delay(8);
  42   2         }
  43   1      
  44   1      }
  45          void main()
  46          {
  47   1      P3=0x0F;
  48   1      
  49   1       TCON=0x01;  //中断设置
  50   1       IE=0x81;
  51   1       while(1)   //循环执行
  52   1        {
  53   2         LED();     //只须调用显示函数
  54   2        }
  55   1      }
C51 COMPILER V7.50   TEXT1                                                                 09/04/2006 19:25:15 PAGE 2   

  56          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    127    ----
   CONSTANT SIZE    =     10    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      1       2
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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