C51 COMPILER V8.02   4X4                                                                   06/23/2009 00:03:41 PAGE 1   


C51 COMPILER V8.02, COMPILATION OF MODULE 4X4
OBJECT MODULE PLACED IN 4x4.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE 4x4.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include <AT89X52.H> 
   2          
   3          #include<stdio.h>
   4          
   5          unsigned char code table[] = {0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0
             -x8e};//共陽數碼管顯示0~F
   6          void delay()                   //延時子程序
   7          {
   8   1       unsigned char n, m;
   9   1       for (n = 100; n > 0; n--)
  10   1        for (m = 300; m > 0; m--);    
  11   1      }
  12          void display(unsigned char S)      //顯示子程序
  13          {
  14   1       P0 = table[S]; //數碼管是P0口驅動的
  15   1       delay();                    
  16   1       P2 = 0x7f; //數碼管選通開關（P2.7選通 也就是數碼管的第八位 (從左到右順序)）
  17   1      }
  18          unsigned char Keycan(void) //按鍵掃描程序 P1.0--P1.3為行線 P1.4--P1.7為列線
  19          {
  20   1        unsigned char rcode, ccode;
  21   1        P1 = 0xF0;      // 發全0行掃描碼，列線輸入
  22   1        if((P1&0xF0) != 0xF0) // 若有鍵按下
  23   1        {
  24   2          delay();// 延時去抖動 
  25   2          if((P1&0xF0) != 0xF0)
  26   2          {  rcode = 0xFE;         // 逐行掃描初值
  27   3          while((rcode&0x10) != 0)
  28   3          {
  29   4             P1 = rcode;         // 輸出行掃描碼
  30   4          if((P1&0xF0) != 0xF0) // 本行有鍵按下
  31   4          {
  32   5             ccode = (P1&0xF0)|0x0F;
  33   5             do{;}while((P1&0xF0) != 0xF0); //等待鍵釋放
  34   5             return ((~rcode) + (~ccode)); // 返回鍵編碼
  35   5          }
  36   4          else
  37   4          rcode = (rcode<<1)|0x01; // 行掃描碼左移一位
  38   4          }
  39   3       }
  40   2        }  
  41   1        return 0; // 無鍵按下，返回值為0
  42   1      }
  43          void KeyDispaly(unsigned char key)
  44          {
  45   1         switch(key)
  46   1         {
  47   2         case 0x11: display(0); break;
  48   2         case 0x21: display(1); break;
  49   2         case 0x41: display(2); break;
  50   2         case 0x81: display(3); break;
  51   2         case 0x12: display(4); break;
  52   2         case 0x22: display(5); break;
  53   2         case 0x42: display(6); break;
  54   2         case 0x82: display(7); break;
C51 COMPILER V8.02   4X4                                                                   06/23/2009 00:03:41 PAGE 2   

  55   2         case 0x14: display(8); break;
  56   2         case 0x24: display(9); break;
  57   2         case 0x44: display(10); break;
  58   2         case 0x84: display(11); break;
  59   2         case 0x18: display(12); break;
  60   2         case 0x28: display(13); break;
  61   2         case 0x48: display(14); break;
  62   2         case 0x88: display(15); break;
  63   2         default: break;
  64   2         }
  65   1      }
  66          int main(void)
  67          { 
  68   1         unsigned char Key;
  69   1         while(1)
  70   1         {
  71   2           Key = Keycan();   
  72   2           KeyDispaly(Key);
  73   2         } 
  74   1      return 0;
  75   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    225    ----
   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)