中断测频.lst

51定时器常用例子包括测频率测脉宽产生波形

C51 COMPILER V6.23a  ____瞋芲                                                              04/11/2006 17:36:24 PAGE 1   


C51 COMPILER V6.23a, COMPILATION OF MODULE ____瞋芲
OBJECT MODULE PLACED IN 中断测频.OBJ
COMPILER INVOKED BY: d:\Keil\C51\BIN\C51.EXE 中断测频.c BROWSE DEBUG OBJECTEXTEND TABS(8) 

stmt level    source

   1          #include"at89x52.h"
   2          #include <math.h>
   3          
   4          #define uchar unsigned char
   5          #define uint  unsigned int
   6          
   7          uchar code  tv[]={0xfe,0xfd,0xfb,0xf7};
   8          uchar code  a[]={0x3f,0x06,0x5b,0x4f,
   9                  0x66,0x6d,0x7d,0x07,0x7f,
  10                  0x6f,0x77,0x7c};
  11          uchar data j,led[4];
  12          uint  f=0,s;
  13          
  14          
  15          void delay(void)
  16          {
  17   1              uint i;
  18   1              for(i=0;i<900;i++);
  19   1      }
  20          
  21          
  22          void kINT1( void ) interrupt 2
  23          {
  24   1              f=(TH1<<8)+TL1;
  25   1              TH1=0; 
  26   1              TL1=0;
  27   1              //IE1 = 0;
  28   1      }
  29          
  30          
  31                ledxianshi()
  32                {
  33   1                uchar k,i;
  34   1                led[0]=f/1000;
  35   1                led[1]=(f%1000)/100;
  36   1                led[2]=(f%100)/10;
  37   1                led[3]=f%10;
  38   1                              
  39   1                      for(k=0;k<4;k++)
  40   1                       { i=led[k];
  41   2                         P0=a[i];
  42   2                         P2=tv[k];
  43   2                         delay();
  44   2                       }
  45   1               } 
  46          
  47          void main()
  48          {
  49   1              EA=1;
  50   1              EX1=1;
  51   1              IT1=1;
  52   1              TMOD=0x50;
  53   1              TH1=0; 
  54   1              TL1=0;
  55   1              TR1=1;
C51 COMPILER V6.23a  ____瞋芲                                                              04/11/2006 17:36:24 PAGE 2   

  56   1              
  57   1              while(1)
  58   1              {
  59   2                      ledxianshi();
  60   2              }
  61   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    193    ----
   CONSTANT SIZE    =     16    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      9    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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