interruptkey.lst

用C51单片机实现的MP3播放器的c代码程序。

C51 COMPILER V7.20   INTERRUPTKEY                                                          05/11/2005 08:47:26 PAGE 1   


C51 COMPILER V7.20, COMPILATION OF MODULE INTERRUPTKEY
OBJECT MODULE PLACED IN .\INTERRUPTKEY.obj
COMPILER INVOKED BY: d:\Keil\C51\BIN\C51.EXE ..\SND.C51\INTERRUPTKEY.C BROWSE DEBUG OBJECTEXTEND PRINT(.\INTERRUPTKEY.ls
                    -t) OBJECT(.\INTERRUPTKEY.obj)

line level    source

   1          #ifndef _CHIPSOURCE_DEFINE
   2           #include "CHIPSOURCE.c"
   3          #endif
   4          
   5          void InterruptKEY(void) interrupt 11
   6          {
   7   1              data BYTE key;
   8   1              data WORD i;
   9   1              key=KBSTA&0x0f;
  10   1      //      key=P1&0x0f;
  11   1      
  12   1      //      printf("%02bx->",key);
  13   1              
  14   1              for(i=0;i<1000;i++);
  15   1              if (key!=~(P1|0xf0)) {KEY_ROW0=0;KEY_ROW1=0;return;}
  16   1              KEY_ROW0=1;KEY_ROW1=1;
  17   1      //      printf("second:%02bx ",~(P1|0xf0));
  18   1              for(i=0;i<100;i++);
  19   1              KEY_ROW0=0;
  20   1              for(i=0;i<100;i++);
  21   1      //      printf("%02bx ",~(P1|0xf0));
  22   1              if (key==KBSTA&0x0f) {KeyCode=key|0x10;KEY_ROW0=0;KEY_ROW1=0;;return;}
  23   1      //      printf("%02bx--",key);
  24   1              KEY_ROW0=1;KEY_ROW1=1;
  25   1      //      printf("first:%02bx ",~(P1|0xf0));
  26   1              for(i=0;i<100;i++);
  27   1              KEY_ROW1=0;
  28   1              for(i=0;i<100;i++);
  29   1      //      printf("%02bx ",~(P1|0xf0));
  30   1              if (key==KBSTA&0x0f) {KeyCode=key;KEY_ROW0=0;KEY_ROW1=0;return;}
  31   1      }
  32          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    172    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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