测周期测频.lst

这是一个51单片急定时技术程序代码

C51 COMPILER V6.23a  瞋_芷_瞋芲                                                            03/31/2006 16:39:15 PAGE 1   


C51 COMPILER V6.23a, COMPILATION OF MODULE 瞋_芷_瞋芲
OBJECT MODULE PLACED IN 测周期测频.OBJ
COMPILER INVOKED BY: e:\mcs51\Keil\C51\BIN\C51.EXE 测周期测频.c BROWSE DEBUG OBJECTEXTEND

stmt level    source

   1                  #include"at89x52.h"
   2                  #define uchar unsigned char
   3                  #define uint  unsigned int
   4                  uchar code  tv[]={0xfe,0xfd,0xfb,0xf7};
   5                  uchar code  a[]={0x3f,0x06,0x5b,0x4f,
   6                               0x66,0x6d,0x7d,0x07,0x7f,
   7                               0x6f,0x77,0x7c};
   8                  uchar data  led[4];
   9                  uint data f;
  10          
  11          
  12              void delay(void)
  13               {
  14   1              uint i;
  15   1              for(i=0;i<100;i++);
  16   1           }
  17          
  18          
  19                ledxianshi()
  20                  {
  21   1                uchar k,i;
  22   1                led[0]=f/1000;
  23   1                led[1]=f%1000/100;
  24   1                              led[2]=f%100/10;
  25   1                              led[3]=f%10;
  26   1                              
  27   1                      for(k=0;k<4;k++)
  28   1                       { i=led[k];
  29   2                         P0=a[i];
  30   2      
  31   2                         if(k==1){P0|=0x80;}
  32   2      
  33   2                         P2=tv[k];
  34   2                         delay();
  35   2                       }
  36   1               } 
  37          
  38                  void main()
  39                   {   TMOD=0x10;
  40   1                       TH1=0; 
  41   1                   TL1=0;
  42   1                   while(1)
  43   1                   {while(P3_5==0);
  44   2                    while(P3_5==1);
  45   2                    TR1=1;
  46   2                while(P3_5==0);
  47   2                    while(P3_5==1);
  48   2                    TR1=0;
  49   2                          f=(TH1<<8)+TL1;
  50   2                          f=100000000/f;              //f=1000000L/f;
  51   2                    while(1)
  52   2                    {ledxianshi();}
  53   2                   }
  54   1               }

C51 COMPILER V6.23a  瞋_芷_瞋芲                                                            03/31/2006 16:39:15 PAGE 2   


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    197    ----
   CONSTANT SIZE    =     16    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      6    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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