key.lst

电赛一等奖作品：音频信号分析仪单片机源码

C51 COMPILER V8.02   KEY                                                                   09/05/2007 11:52:44 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          #include <at89x51.h>
   2          #include "Key.h"
   3          typedef unsigned char uchar;
   4          bit g_KeyDown;
   5          data unsigned char g_KeyValue;
   6          void key_down(void) interrupt 0 using 1
   7          {
   8   1              EX0=0;
   9   1              if(g_KeyDown) //if has Old Key Discard New Key
  10   1          {
  11   2              EX0=1;
  12   2              return;
  13   2          }
  14   1              g_KeyDown=1;
  15   1              g_KeyValue=P1;
  16   1              g_KeyValue=g_KeyValue & 0x0f;
  17   1              EX0=1;  
  18   1      }
  19          uchar WaitKey()
  20          {
  21   1              uchar t;
  22   1              g_KeyDown=0;
  23   1              while(!g_KeyDown){};
  24   1              t=g_KeyValue;
  25   1              g_KeyDown=0;
  26   1              return t;
  27   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     29    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      1    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =      1    ----
END OF MODULE INFORMATION.


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