1.lst

89c51的等精度频率计lcd1602显示

C51 COMPILER V7.09   1                                                                     07/03/2007 09:51:11 PAGE 1   


C51 COMPILER V7.09, COMPILATION OF MODULE 1
OBJECT MODULE PLACED IN 1.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE 1.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include <reg51.h>
   2          main()
   3          { unsigned char i,temp,f;
   4   1        P0=0xff;
   5   1        P1=0x00;
   6   1      TMOD=0x0D;
   7   1         EA=1;
   8   1         ET0=1;
   9   1         TR0=1;
  10   1        while(!P3^3)
  11   1        TR0=0;
  12   1        temp=TH0*256+TL0;
  13   1        while(temp<=500)
  14   1        { P0<<1;
*** WARNING C275 IN LINE 14 OF 1.C: expression with possibly no effect
  15   2          P1++;
  16   2              i++;
  17   2        }
  18   1        f=500000/temp*10^i;
  19   1      
  20   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     86    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----       2
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


C51 COMPILATION COMPLETE.  1 WARNING(S),  0 ERROR(S)