key4.lst

来自「单片及c语言轻松入门的随书光盘」· LST 代码 · 共 39 行

C51 COMPILER V7.06   KEY4                                                                  03/01/2006 14:57:36 PAGE 1   


C51 COMPILER V7.06, COMPILATION OF MODULE KEY4
OBJECT MODULE PLACED IN key4.OBJ
COMPILER INVOKED BY: d:\Keil\C51\BIN\C51.EXE key4.c BROWSE DEBUG OBJECTEXTEND

stmt level    source

   1          /*如果K1被按下，K2也被按下，那么灯全亮，松开K2，灯也不灭，如果K1松开，则灯全灭。
   2          */
   3          #include "reg51.h"
   4          void main()
   5          {       for(;;)
   6   1              {       P3|=0x3c;
   7   2                      if((P3|0xfb)!=0xff)  /*K1被按下了吗？*/
   8   2                      {       if((P3|0xf7)!=0xff) /*K2被按下了吗？*/
   9   3                                      P1=0;   /*两者都被按下，点亮LED*/
  10   3                      }
  11   2                      else
  12   2                              P1=0xff;   
  13   2              }
  14   1      }
  15          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     27    ----
   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)