key.lst

应用KEILC写的一个C51程序

C51 COMPILER V8.02   KEY                                                                   04/16/2008 22:07:29 PAGE 1   


C51 COMPILER V8.02, COMPILATION OF MODULE KEY
OBJECT MODULE PLACED IN key.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE key.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include "key.h"
   2          #include "delay.h"
   3          uchar GetKeyValue(void)
   4          {
   5   1         uchar keyval,newkey;
   6   1         uchar i,j,kv;
   7   1         kv=0;    
   8   1         for(i=0;i<4;i++)
   9   1         {
  10   2            P2=(0xef<<i);
  11   2                keyval=P0;
  12   2                keyval &=0x1f;
  13   2      
  14   2                if(keyval!=0x1f)
  15   2                {
  16   3                   delayms(10);         
  17   3                   newkey=P0;
  18   3                   newkey &=0x1f;
  19   3                       if(keyval==newkey)
  20   3                       {
  21   4                          newkey=P0;
  22   4                              while((newkey & 0x1f)!=0x1f)
  23   4                                 newkey=P0;
  24   4                  for(j=0;j<5;j++)
  25   4                              {
  26   5                                 if(((keyval>>j)&0x01)==0x00)
  27   5                                 {
  28   6                                    kv=j*4+i+1;
  29   6                                        break;
  30   6                                 }
  31   5                              }                        
  32   4                       }
  33   3                }
  34   2         }
  35   1         return kv;
  36   1      }
  37          
  38          //1--1  2--2    3--3  4--F1
  39          //5--4  6--5    7--6  8--F2
  40          //9--7  10--8  11--9  12--F3  
  41          //13--* 14--0  15--#  16--F4
  42          //17--C 18--B  19--A            
  43          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    104    ----
   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)