w7.lst

C51D单片机4*4键盘试验

C51 COMPILER V8.02   W7                                                                    08/09/2008 21:54:50 PAGE 1   


C51 COMPILER V8.02, COMPILATION OF MODULE W7
OBJECT MODULE PLACED IN W7.OBJ
COMPILER INVOKED BY: D:\Program Files\KEIL\C51\BIN\C51.EXE W7.C BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include<reg51.h>
   2          unsigned char keyv;
   3          unsigned char code table[]={0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90,0x88,0x83,0xC6,0xA1,0x86,0x8
             -E,0xff}; //字形码）
   4          void delay1ms(unsigned int t)
   5          { unsigned int i,j;
   6   1         for(i=0;i<t;i++)
   7   1          for(j=0;j<120;j++);
   8   1      }
   9          
  10             void keyscan() //按键扫描子程序
  11          { unsigned char temp,scode;
  12   1          scode=0xfe;
  13   1          P1=scode;
  14   1              temp=P1;
  15   1              temp&=0xf0;
  16   1      if(temp!=0xf0)
  17   1         {delay1ms(10);
  18   2          temp=P1;
  19   2          temp&=0xf0;
  20   2           if(temp!=0xf0)
  21   2         {temp=P1;
  22   3             temp&=0xF0;
  23   3          switch(temp)
  24   3                {case 0xe0: keyv=0;break;
  25   4                 case 0xd0: keyv=1;break;
  26   4                 case 0xb0: keyv=2;break;
  27   4                 case 0x70: keyv=3;break;
  28   4                 }
  29   3         }
  30   2         }
  31   1      scode=0xfd;
  32   1           P1=scode;
  33   1               temp=P1;
  34   1               temp&=0xf0;
  35   1      if(temp!=0xf0)
  36   1         {delay1ms(10);
  37   2          temp=P1;
  38   2          temp&=0xf0;
  39   2           if(temp!=0xf0)
  40   2         {temp=P1;
  41   3             temp&=0xF0;
  42   3          switch(temp)
  43   3                {case 0xe0: keyv=4;break;
  44   4                 case 0xd0: keyv=5;break;
  45   4                 case 0xb0: keyv=6;break;
  46   4                 case 0x70: keyv=7;break;
  47   4                 }
  48   3          }
  49   2          } 
  50   1      scode=0xfb;
  51   1           P1=scode;
  52   1      temp=P1;
  53   1      temp&=0xf0;
  54   1      if(temp!=0xf0)
C51 COMPILER V8.02   W7                                                                    08/09/2008 21:54:50 PAGE 2   

  55   1         {delay1ms(10);
  56   2          temp=P1;
  57   2          temp&=0xf0;
  58   2           if(temp!=0xf0)
  59   2         {temp=P1;
  60   3             temp&=0xF0;
  61   3          switch(temp)
  62   3                {case 0xe0: keyv=8;break;
  63   4                 case 0xd0: keyv=9;break;
  64   4                 case 0xb0: keyv=10;break;
  65   4                 case 0x70: keyv=11;break;
  66   4                 }
  67   3          }
  68   2          } 
  69   1      scode=0xf7;
  70   1           P1=scode;
  71   1      temp=P1;
  72   1      temp&=0xf0;
  73   1      if(temp!=0xf0)
  74   1         {delay1ms(10);
  75   2          temp=P1;
  76   2          temp&=0xf0;
  77   2           if(temp!=0xf0)
  78   2         {temp=P1;
  79   3             temp&=0xF0;
  80   3          switch(temp)
  81   3                {case 0xe0: keyv=12;break;
  82   4                 case 0xd0: keyv=13;break;
  83   4                 case 0xb0: keyv=14;break;
  84   4                 case 0x70: keyv=15;break;
  85   4                 }
  86   3          }
  87   2          } 
  88   1          }
  89             
  90          void display()
  91          { P0=table[keyv];
  92   1        P2=0;
  93   1      }
  94          void main()
  95          {keyv=16;
  96   1         while(1)
  97   1      { keyscan();
  98   2          display();
  99   2      }
 100   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    333    ----
   CONSTANT SIZE    =     17    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      1       1
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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