fs20-2.lst

51单片机开发入门与典型实例

C51 COMPILER V7.06   FS20_2                                                                01/08/2007 15:36:12 PAGE 1   


C51 COMPILER V7.06, COMPILATION OF MODULE FS20_2
OBJECT MODULE PLACED IN fs20-2.OBJ
COMPILER INVOKED BY: C:\Keil7.06\C51\BIN\C51.EXE fs20-2.c BROWSE DEBUG OBJECTEXTEND

stmt level    source

   1          /* 文件名：fs20-2.c */
   2          /* 程序功能：发出嘀嘀声 */
   3           #include<AT89X51.h>
   4           void delay250( unsigned int k );
   5           main( ) 
   6           {   
   7   1         for (;;)
   8   1         {
   9   2          while(P2_7==0)    
  10   2           {             
  11   3             unsigned int j; 
  12   3                 for(j=0;j<400;j++)
  13   3              {
  14   4               P3_4=0;            
  15   4                   delay250(2);
  16   4               P3_4=1;            
  17   4                   delay250(2);
  18   4              }
  19   3              
  20   3              delay250(800);
  21   3           }       
  22   2        }                                           
  23   1      }
  24            /*250μs×k*/ 
  25           void delay250(unsigned int k) 
  26           {  
  27   1        unsigned int j,i;
  28   1       for(i=0;i<k;i++)
  29   1          {
  30   2           for(j=0;j<25;j++); 
  31   2          }
  32   1       } 


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     84    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----       2
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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