scan.lst

矩阵键盘串口发送与接受

C51 COMPILER V9.00   SCAN                                                                  02/22/2013 10:56:45 PAGE 1   


C51 COMPILER V9.00, COMPILATION OF MODULE SCAN
OBJECT MODULE PLACED IN scan.OBJ
COMPILER INVOKED BY: D:\keil\C51\BIN\C51.EXE scan.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1           #include <reg51.h>
   2           #define  uint unsigned int
   3           #define  uchar unsigned char
   4           #define  key   P1 
   5          
   6          char getkey()
   7          {
   8   1         uchar a,b;
   9   1      do
  10   1       {              
  11   2        key=0xf0;
  12   2        a=key;
  13   2        key=0x0f;
  14   2        b=key;
  15   2        a=a|b;
  16   2                      }
  17   1        while(a==0xff) ;
  18   1        return a;
  19   1      }
  20          char scan()
  21           {
  22   1              uchar  i,a,n=0; 
  23   1              uchar shu[]={0xee,0xde,0xbe,0x7e,0xed,0xdd,0xbd,0x7d,0xeb,0xdb,0xbb,0x7b,0xe7,0xd7,0xb7,0x77};
  24   1              a=getkey();
  25   1              for(i=0;i<16;i++)
  26   1              {
  27   2              if(shu[i]==a)
  28   2              n=i;    
  29   2              }
  30   1         return n;
  31   1       }
  32          
  33                          
  34                          
  35                          
  36                          
  37                  
  38          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     60    ----
   CONSTANT SIZE    =     16    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----      17
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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