C51 COMPILER V7.50   KEYBOARD                                                              09/20/2008 15:21:10 PAGE 1   


C51 COMPILER V7.50, COMPILATION OF MODULE KEYBOARD
OBJECT MODULE PLACED IN keyBoard.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE keyBoard.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include "keyBoard.h"
   2          
   3          
   4          
   5          //4*4按鍵排列
   6          const unsigned char keyBoard[4][4]={ZHOUQI,PINLV,JIANGE,OK,
   7                                                                          HISTORY,UP,DOWN,CANCEL,
   8                                                                          Hz1,Hz2,Hz3,Hz4,
   9                                                                          Hz5,Hz6,Hz7,SIXTEEN
  10                                                                   };
  11          
  12          //掃描鍵盤函數,返回按下鍵的值,不消抖
  13          unsigned char KeyScan0()
  14          {
  15   1              KEY_PORT=0xff;
  16   1              Delay20us(2);
  17   1      
  18   1              row1=0;
  19   1              Delay20us(2);
  20   1              if(line1==0)
  21   1                      return keyBoard[0][0];
  22   1              if(line2==0)
  23   1                      return keyBoard[1][0];
  24   1              if(line3==0)
  25   1                      return keyBoard[2][0];
  26   1              if(line4==0)
  27   1                      return keyBoard[3][0];
  28   1              row1=1;
  29   1              Delay20us(2);
  30   1      
  31   1              row2=0;
  32   1              Delay20us(2);
  33   1              if(line1==0)
  34   1                      return keyBoard[0][1];
  35   1              if(line2==0)
  36   1                      return keyBoard[1][1];
  37   1              if(line3==0)
  38   1                      return keyBoard[2][1];
  39   1              if(line4==0)
  40   1                      return keyBoard[3][1];
  41   1              row2=1;
  42   1              Delay20us(2);
  43   1      
  44   1              row3=0;
  45   1              Delay20us(2);
  46   1              if(line1==0)
  47   1                      return keyBoard[0][2];
  48   1              if(line2==0)
  49   1                      return keyBoard[1][2];
  50   1              if(line3==0)
  51   1                      return keyBoard[2][2];
  52   1              if(line4==0)
  53   1                      return keyBoard[3][2];
  54   1              row3=1;
  55   1              Delay20us(2);
C51 COMPILER V7.50   KEYBOARD                                                              09/20/2008 15:21:10 PAGE 2   

  56   1      
  57   1              row4=0;
  58   1              Delay20us(2);
  59   1              if(line1==0)
  60   1                      return keyBoard[0][3];
  61   1              if(line2==0)
  62   1                      return keyBoard[1][3];
  63   1              if(line3==0)
  64   1                      return keyBoard[2][3];
  65   1              if(line4==0)
  66   1                      return keyBoard[3][3];
  67   1              row4=1;
  68   1              Delay20us(2);
  69   1      
  70   1              return NOKEY;
  71   1      }
  72          
  73          unsigned char KeyScan() //對按鍵進行消抖
  74          {
  75   1              unsigned char a,b;
  76   1              a=KeyScan0();
  77   1              Delayms(100);
  78   1              b=KeyScan0();
  79   1              if(a!=b||a==NOKEY||b==NOKEY)
  80   1              {
  81   2                      return NOKEY;
  82   2              }
  83   1              Delayms(150);
  84   1              return a;
  85   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    219    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =     16       1
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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