key.lst

AT89S52单片机驱动带字库的LCD12864液晶屏实现图形显示

C51 COMPILER V8.02   KEY                                                                   01/07/2009 11:33:16 PAGE 1   


C51 COMPILER V8.02, 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          #define         uchar     unsigned char
   2          #define         uint      unsigned int
   3          #include<89c51.h>
   4          
   5          void delays(uint k)
   6          {
   7   1              uint data i,j;
   8   1              for(i=0;i<k;i++)
   9   1              {
  10   2                      for(j=0;j<121;j++)
  11   2                      {;}
  12   2              }
  13   1      }
  14          
  15          
  16          uchar kbscan(void) 
  17          { 
  18   1              uchar temp,key; 
  19   1              P2=0x0F; 
  20   1              temp=P2&0x0F; 
  21   1              if(temp==0x0F) 
  22   1          return 0;    //没有按键按下,低四位中任意一位都不会被拉低 
  23   1              else 
  24   1              { 
  25   2                      delays(10);  //去干扰 
  26   2                      temp=P2&0x0F; 
  27   2                      if(temp==0x0F) 
  28   2                      return 0; 
  29   2                      else 
  30   2                      key=temp;         
  31   2                      }          
  32   1              P2=0xF0; 
  33   1              delays(10); 
  34   1         
  35   1              temp=P2&0xF0; 
  36   1              if(temp==0xF0) 
  37   1          return 0; 
  38   1              else 
  39   1          key|=temp; 
  40   1              do{;}
  41   1              while((P2&0xF0)!=0xF0);       //等待按键按下    
  42   1              return key;     
  43   1              } 
  44          
  45          uchar get_key(void) 
  46          { 
  47   1              uchar i=0; 
  48   1              i=kbscan(); 
  49   1              switch (i)             //将按键码转换成键值 
  50   1              { 
  51   2                      case 0x77: return 1; 
  52   2                      case 0x7B: return 2; 
  53   2                      case 0x7D: return 3; 
  54   2                      case 0x7E: return 4; 
  55   2                      case 0xB7: return 5; 
C51 COMPILER V8.02   KEY                                                                   01/07/2009 11:33:16 PAGE 2   

  56   2                      case 0xBB: return 6; 
  57   2                      case 0xBD: return 7; 
  58   2              case 0xBE: return 8; 
  59   2              case 0xD7: return 9; 
  60   2              case 0xDB: return 10; 
  61   2              case 0xDD: return 11; 
  62   2              case 0xDE: return 12; 
  63   2              case 0xE7: return 13; 
  64   2              case 0xEB: return 14; 
  65   2              case 0xED: return 15; 
  66   2              case 0xEE: return 16; 
  67   2              case 0x00: return 0X00; 
  68   2              default  : return 0x00; 
  69   2              } 
  70   1      } 


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    216    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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