key.lst

单片机密码-24c01-12864-4x4按键扫描 初始密码是123456,按#确认 进入后,按*修改密码

C51 COMPILER V8.02   KEY                                                                   06/21/2008 15:17:31 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<reg52.h>
   2          //#include <absacc.h>
   3          #include"key.h"
   4          //#include"common.h"
   5          /*
   6          char code tab[4][4]=
   7          {
   8              {
   9                  '7','8','9','A'
  10              }
  11              ,
  12              {
  13                  '4','5','6','B'
  14              }
  15              ,
  16              {
  17                  '1','2','3','C'
  18              }
  19              ,
  20              {
  21                  '#','0','*','D'
  22              }
  23          }
  24          ;       //0到F的16个键植
  25          */
  26          ///*
  27          char code tab[4][4]=
  28          {
  29              {
  30                  '1','4','7','#'
  31              }
  32              ,
  33              {
  34                  '2','5','8','0'
  35              }
  36              ,
  37              {
  38                  '3','6','9','*'
  39              }
  40              ,
  41              {
  42                  'A','B','C','D'
  43              }
  44          }
  45          ;       //0到F的16个键植
  46          //*/
  47          
  48          ///*
  49          ///*
  50          void delay(uchar a)
  51          {
  52   1          uchar i;
  53   1          while(a--)
  54   1          for(i=100;i>0;i--)
  55   1          ;
C51 COMPILER V8.02   KEY                                                                   06/21/2008 15:17:31 PAGE 2   

  56   1      }
  57          //*/
  58          
  59          //*/
  60          
  61          
  62          uchar kbscan()          //键盘扫描
  63          {
  64   1          uchar hang,lie,key;
  65   1          if(P3!=0x0f)
  66   1          delay(5);
  67   1          if(P3!=0x0f)
  68   1          {
  69   2              switch(P3&0x0f)
  70   2              {
  71   3                  case 0x0e:lie=0;break;
  72   3                  case 0x0d:lie=1;break;
  73   3                  case 0x0b:lie=2;break;
  74   3                  case 0x07:lie=3;break;
  75   3              }
  76   2              P3=0xf0;
  77   2              P3=0xf0;
  78   2              switch(P3&0xf0)
  79   2              {
  80   3                  case 0xe0:hang=0;break;
  81   3                  case 0xd0:hang=1;break;
  82   3                  case 0xb0:hang=2;break;
  83   3                  case 0x70:hang=3;break;
  84   3              }
  85   2              P3=0x0f;
  86   2              while(P3!=0x0f);
  87   2              key=tab[hang][lie];
  88   2          }
  89   1          else
  90   1          //key=0;
  91   1          return (0);
  92   1          return (key);
  93   1          //return (0);
  94   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    162    ----
   CONSTANT SIZE    =     16    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----       3
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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