key.lst

用51单片机的IO口采集按键信息

C51 COMPILER V7.50   KEY                                                                   08/24/2006 23:06:54 PAGE 1   


C51 COMPILER V7.50, 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 "51Training.h"
   2          
   3          BYTE const DLEDcodeA[10]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};
   4          BYTE const Keyvalcode[12]={0x57,0x6e,0x5e,0x3e,0x6d,0x5d,0x3d,0x6b,0x5b,0x3b,0x67,0x37};
   5          
   6          
   7          void Delay(WORD t)
   8          {       while(t--);}
   9          
  10          
  11          void DLEDdispNumA(WORD Num)
  12          {
  13   1              P0=0xff;Num%=10000;
  14   1              DLEDcs1=DLEDcs2=DLEDcs3=DLEDcs4=1;P0=DLEDcodeA[Num/1000];DLEDcs1=0;Num%=1000;Delay(0x100);
  15   1              DLEDcs1=DLEDcs2=DLEDcs3=DLEDcs4=1;P0=DLEDcodeA[Num/100];DLEDcs2=0; Num%=100; Delay(0x100);
  16   1              DLEDcs1=DLEDcs2=DLEDcs3=DLEDcs4=1;P0=DLEDcodeA[Num/10];DLEDcs3=0;  Num%=10;  Delay(0x100);
  17   1              DLEDcs1=DLEDcs2=DLEDcs3=DLEDcs4=1;P0=DLEDcodeA[Num];DLEDcs4=0;               Delay(0x100);
  18   1              DLEDcs1=DLEDcs2=DLEDcs3=DLEDcs4=1;      
  19   1      }
  20          
  21          BYTE CllectKey()
  22          {
  23   1              BYTE i,kval=0;
  24   1              
  25   1              P1=0xff;
  26   1              LED1=LED2=LED3=LED4=0;
  27   1              if((LED5==0)|(LED6==0)|(LED7==0))
  28   1              {
  29   2                      Delay(1000);//Delay 10ms.
  30   2                      if((LED5==0)|(LED6==0)|(LED7==0)) kval=P1&0x70;
  31   2                      else return 0xff;
  32   2                      P1=0xff;
  33   2                      LED5=LED6=LED7=0;kval=kval|(P1&0xf);
  34   2                      for(i=0;i<12;i++)
  35   2                      {if(kval==Keyvalcode[i]) return i;}
  36   2              }
  37   1              return 0xff;
  38   1      }
  39          void main()
  40          {
  41   1              BYTE val,oldval;
  42   1              P2=0;
  43   1              Delay(0xffff);
  44   1              val=oldval=0;
  45   1              while(1)
  46   1              {
  47   2                      val=CllectKey();
  48   2                      if(val!=0xff) oldval=val;
  49   2                      DLEDdispNumA(oldval);
  50   2              }
  51   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    347    ----
C51 COMPILER V7.50   KEY                                                                   08/24/2006 23:06:54 PAGE 2   

   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =     22       1
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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