keybord.lst

以51单片机为微处理器

C51 COMPILER V7.50   KEYBORD                                                               07/26/2007 19:47:24 PAGE 1   


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

line level    source

   1          #define uchar unsigned char
   2          #define uint  unsigned int
   3          
   4          #include<reg52.h>
   5          #include<absacc.h>
   6          
   7          sbit P2_0=P2^0;
   8          sbit P2_1=P2^1;
   9          sbit P2_2=P2^2;
  10          
  11          uchar Keyvalue;
  12          
  13          void keybord() interrupt 0
  14          {
  15   1          P2_0=0;
  16   1          P2_1=0;
  17   1          P2_2=0;     //控制片选选通
  18   1      
  19   1          SBUF=0X10;
  20   1          while(!TI);
  21   1              TI=0;
  22   1      
  23   1          Keyvalue=SBUF;
  24   1          while(!RI);
  25   1          RI=0;
  26   1         
  27   1      }
  28          
  29          void main()
  30          {
  31   1         EA=1;         //CPU开中断
  32   1         EX0=1;        //打开INT0中断
  33   1         IT0=1;        //设定INT0为负跳变触发
  34   1         SCON=0X10;    //设定串口工作方式
  35   1      
  36   1         switch(Keyvalue)
  37   1         {
  38   2           case 0x00: break;
  39   2               case 0x01: break;
  40   2         }
  41   1         while(1);
  42   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     34    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      1    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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