matridemo.lst

C51实现键盘操作

C51 COMPILER V8.05a   MATRIDEMO                                                            09/11/2007 20:18:13 PAGE 1   


C51 COMPILER V8.05a, COMPILATION OF MODULE MATRIDEMO
OBJECT MODULE PLACED IN MatriDemo.OBJ
COMPILER INVOKED BY: D:\Program Files\Keil\C51\BIN\C51.EXE MatriDemo.C BROWSE DEBUG OBJECTEXTEND

line level    source

   1          /*
   2          
   3          
   4          */
   5          
   6          #include<reg51.h>
   7          
   8          #define uchar unsigned char
   9          
  10          
  11          uchar code digit[16] = {0x06,0xFF,0xFF,0xFF,                                                                            //数据表
  12                                                                                                          0xFF,0xFF,0xFF,0xFF,
  13                                                                                                          0xFF,0xFF,0xFF,0xFF,
  14                                                                                                          0xFF,0xFF,0xFF,0xFF,};
  15                                                                                                          
  16          void delay(){                                                                                                                                                                           //延迟10ms
  17   1              uchar i,j;
  18   1              for(i = 0; i< 20; i++)
  19   1                      for(j = 0; j < 248; j++)
  20   1                              ;
  21   1      }
  22          
  23          
  24           
  25          void main(){
  26   1              uchar key = 1;
  27   1              while(1){
  28   2                      P3 = 0x0F;
  29   2                      
  30   2                      if((P3&0x0F)!=0x0F){                                                                                                                            //判断是否有键按下
  31   3                              delay();
  32   3                              P3 = 0xEF;
  33   3                              if((P3&0x0F)==0x0E) key = 0;
  34   3                              while((P3&0x0F)!=0x0F);
  35   3                      }
  36   2                      P1 = digit[key];
  37   2              }       
  38   1      }
  39          
  40          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     59    ----
   CONSTANT SIZE    =     16    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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