keyboard.lst

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C51 COMPILER V7.06   KEYBOARD                                                              03/02/2006 23:11:51 PAGE 1   


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

stmt level    source

   1          /************************************************************************************
   2            本程序仅供广大电子爱好者制作MP3学习和参考使用，不得用于其它用途，否则后果自负
   3          
   4             keyboard.c file 
   5             Created by Computer-lov. Date: 2005.3.19
   6             Last edited date: 2005.5.31
   7             version 1.1
   8             Copyright (c) 2005 Computer-lov
   9             All rigths reserved
  10          **************************************************************************************/
  11          
  12          #include "keyboard.h"
  13          #include "AT89C51SND1C.H"
  14          
  15          //////////////////////////////////////////////////
  16          unsigned char key=0;
  17          
  18          
  19          void ISR_keyboard(void) interrupt 11   //键盘中断处理
  20          {
  21   1       unsigned char key_press_status;
  22   1       key_press_status=KBSTA;        //保存按键状态
  23   1       if(key)return;                 //如果上一次按键未处理，等待处理完后，再响应新的按键
  24   1       if(key_press_status & 0x01){key=KEY_UP;}   //散转
  25   1       if(key_press_status & 0x02){key=KEY_FUN;}
  26   1       if(key_press_status & 0x04){key=KEY_DOWN;}
  27   1       if(key_press_status & 0x08){key=KEY_OK;}
  28   1      }
  29          //////////////////////////////////////////////////


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     50    ----
   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)