1.lst

矩阵式键盘与单片机接口程序

C51 COMPILER V8.02   1                                                                     03/06/2008 15:29:39 PAGE 1   


C51 COMPILER V8.02, COMPILATION OF MODULE 1
OBJECT MODULE PLACED IN 1.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE 1.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1            #include <AT89X51.H>
   2          unsigned char code table[]={0x3f,0x06,0x5b,0x4f,
   3                                      0x66,0x6d,0x7d,0x07,
   4                                      0x7f,0x6f,0x77,0x7c,
   5                                      0x39,0x5e,0x79,0x71};
   6          unsigned char temp;
   7          unsigned char key;
   8          unsigned char i,j;
   9          
  10          
  11          void main(void)
  12          {
  13   1        while(1)
  14   1          {
  15   2            P3=0xff;
  16   2            P3_4=0;
  17   2            temp=P3;
  18   2            temp=temp & 0x0f;
  19   2            if (temp!=0x0f)
  20   2              {
  21   3                for(i=50;i>0;i--)
  22   3                for(j=200;j>0;j--);
  23   3                temp=P3;
  24   3                temp=temp & 0x0f;
  25   3                if (temp!=0x0f)
  26   3                  {
  27   4                    temp=P3;
  28   4                    temp=temp & 0x0f;              
  29   4                    switch(temp)
  30   4                      {
  31   5                        case 0x0e:
  32   5                          key=0;
  33   5                          break;
  34   5                        case 0x0d:
  35   5                          key=1;
  36   5                          break;
  37   5                        case 0x0b:
  38   5                          key=2;
  39   5                          break;
  40   5                        case 0x07:
  41   5                          key=3;
  42   5                          break;
  43   5                      }
  44   4                    P0=table[key];             
  45   4                  }
  46   3              }
  47   2      
  48   2            P3=0xff;
  49   2            P3_5=0;
  50   2            temp=P3;
  51   2            temp=temp & 0x0f;
  52   2            if (temp!=0x0f)
  53   2              {
  54   3                for(i=50;i>0;i--)
  55   3                for(j=200;j>0;j--);
C51 COMPILER V8.02   1                                                                     03/06/2008 15:29:39 PAGE 2   

  56   3                temp=P3;
  57   3                temp=temp & 0x0f;
  58   3                if (temp!=0x0f)
  59   3                  {
  60   4                    temp=P3;
  61   4                    temp=temp & 0x0f;              
  62   4                    switch(temp)
  63   4                      {
  64   5                        case 0x0e:
  65   5                          key=4;
  66   5                          break;
  67   5                        case 0x0d:
  68   5                          key=5;
  69   5                          break;
  70   5                        case 0x0b:
  71   5                          key=6;
  72   5                          break;
  73   5                        case 0x07:
  74   5                          key=7;
  75   5                          break;
  76   5                      }
  77   4                    P0=table[key];             
  78   4                  }
  79   3              }
  80   2      
  81   2            P3=0xff;
  82   2            P3_6=0;
  83   2            temp=P3;
  84   2            temp=temp & 0x0f;
  85   2            if (temp!=0x0f)
  86   2              {
  87   3                for(i=50;i>0;i--)
  88   3                for(j=200;j>0;j--);
  89   3                temp=P3;
  90   3                temp=temp & 0x0f;
  91   3                if (temp!=0x0f)
  92   3                  {
  93   4                    temp=P3;
  94   4                    temp=temp & 0x0f;              
  95   4                    switch(temp)
  96   4                      {
  97   5                        case 0x0e:
  98   5                          key=8;
  99   5                          break;
 100   5                        case 0x0d:
 101   5                          key=9;
 102   5                          break;
 103   5                        case 0x0b:
 104   5                          key=10;
 105   5                          break;
 106   5                        case 0x07:
 107   5                          key=11;
 108   5                          break;
 109   5                      }
 110   4                    P0=table[key];             
 111   4                  }
 112   3              }
 113   2      
 114   2            P3=0xff;
 115   2            P3_7=0;
 116   2            temp=P3;
 117   2            temp=temp & 0x0f;
C51 COMPILER V8.02   1                                                                     03/06/2008 15:29:39 PAGE 3   

 118   2            if (temp!=0x0f)
 119   2              {
 120   3                for(i=50;i>0;i--)
 121   3                for(j=200;j>0;j--);
 122   3                temp=P3;
 123   3                temp=temp & 0x0f;
 124   3                if (temp!=0x0f)
 125   3                  {
 126   4                    temp=P3;
 127   4                    temp=temp & 0x0f;              
 128   4                    switch(temp)
 129   4                      {
 130   5                        case 0x0e:
 131   5                          key=12;
 132   5                          break;
 133   5                        case 0x0d:
 134   5                          key=13;
 135   5                          break;
 136   5                        case 0x0b:
 137   5                          key=14;
 138   5                          break;
 139   5                        case 0x07:
 140   5                          key=15;
 141   5                          break;
 142   5                      }
 143   4                    P0=table[key];              
 144   4                  }
 145   3              }
 146   2          }
 147   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    369    ----
   CONSTANT SIZE    =     16    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      4    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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