keyboard.lst

一款硬盘ＭＰ３的源代码

C51 COMPILER V7.50   KEYBOARD                                                              11/27/2005 23:13:43 PAGE 1   


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

line level    source

   1          /* keyboard.c file 
   2             Created by Computer-lov. Date: 2005.3.19
   3             Last edited date: 2005.5.31
   4             Copyright (c) 2005 Computer-lov
   5             version 1.1
   6          */
   7          
   8          #include "keyboard.h"
   9          #include "AT89C51SND1C.H"
  10          
  11          //////////////////////////////////////////////////
  12          unsigned char key=0;
  13          
  14          
  15          void ISR_keyboard(void) interrupt 11   //键盘中断处理
  16          {
  17   1      unsigned char key_press_status;
  18   1      key_press_status=KBSTA;        //保存按键状态
  19   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
  20   1      if(key_press_status & 0x01){key=KEY_UP;}   //散转
  21   1      if(key_press_status & 0x02){key=KEY_FUN;}
  22   1      if(key_press_status & 0x04){key=KEY_DOWN;}
  23   1      if(key_press_status & 0x08){key=KEY_OK;}
  24   1      }
  25          //////////////////////////////////////////////////
  26          


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)