getkey.lst

8255卡驱动,应该不错

C51 COMPILER V7.06   GETKEY                                                                07/30/2007 16:03:54 PAGE 1   


C51 COMPILER V7.06, COMPILATION OF MODULE GETKEY
OBJECT MODULE PLACED IN getkey.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE getkey.c DEBUG OBJECTEXTEND

stmt level    source

   1          #include<_REG51_.H>
*** WARNING C318 IN LINE 1 OF getkey.c: can't open file '_REG51_.H'
   2          #include<_ExF(x)_.h>
*** ERROR C141 IN LINE 4 OF _EXF(X)_.H: syntax error near '*', expected ')'
*** ERROR C129 IN LINE 5 OF _EXF(X)_.H: missing ';' before 'GetKey'
   3          //-----------------------------
   4          uchar   Tab1[]={0xf7,0xfb,0xfd,0xfe};
   5          sfr             KeyPort=0x90;
   6          //-----------------------------
   7          uchar   ReadKey(void)
   8                  {
   9                          uchar   i=0,keybyte=0;
  10                          bit             keyflag=0;
  11                          KeyPort =0xF0;
  12                          _nop_();
  13                          if(KeyPort!=0xF0)
  14                                  {
  15                                          while((keyflag==0)&&(i<4))
  16                                                  {
  17                                                          KeyPort=Tab1[i];
  18                                                          Delay(2);                  //delay for 11+2*6=23uS.
  19                                                          if(KeyPort!=Tab1[i])
  20                                                                  {
  21                                                                           keybyte=KeyPort;                         //save the key.
  22                                                                           keyflag=1;                                       //get key ok.
  23                                                                           while(KeyPort!=Tab1[i]){;}       //waiting for key released.
  24                                                                  }
  25                                                          i++;                                                             
  26                                                  }                                                                               
  27                                          return  keybyte;                                        
  28                                  }
  29                          else    
  30                          {
  31                          //      KeyPort =0xFF;
  32                                  return  0;
  33                          }               
  34                  }
  35          //-----------------------------
  36          uchar   Getkey(void)
  37                          {
  38                                  uchar   keydat;
  39                                  keydat=ReadKey();
  40                                  switch(keydat)
  41                                  {
  42                                          case    0xEE:   return  1;              break;
  43                                          case    0xED:   return  2;              break;
  44                                          case    0xEB:   return  3;              break;
  45                                          case    0xE7:   return  4;              break;
  46                                          case    0xDE:   return  5;              break;
  47                                          case    0xDD:   return  6;              break;
  48                                          case    0xDB:   return  7;              break;
  49                                          case    0xD7:   return  8;              break;
  50                                          case    0xBE:   return  9;              break;
  51                                          case    0xBD:   return  10;             break;
  52                                          case    0xBB:   return  11;             break;
C51 COMPILER V7.06   GETKEY                                                                07/30/2007 16:03:54 PAGE 2   

  53                                          case    0xB7:   return  12;             break;
  54                                          case    0x7E:   return  13;             break;
  55                                          case    0x7D:   return  14;             break;
  56                                          case    0x7B:   return  15;             break;
  57                                          case    0x77:   return  16;             break;
  58                                          default:                return  0;              break;
  59                                  }
  60                          }

C51 COMPILATION COMPLETE.  1 WARNING(S),  2 ERROR(S)