main.lst

基于等精度测量原理的频率计

C51 COMPILER V8.02   MAIN                                                                  07/18/2008 16:32:01 PAGE 1   


C51 COMPILER V8.02, COMPILATION OF MODULE MAIN
OBJECT MODULE PLACED IN main.OBJ
COMPILER INVOKED BY: D:\Keil\C51\BIN\C51.EXE main.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include <reg52.h>
   2          #include <INTRINS.H>
   3          #include <math.H>
   4          #include <stdio.H>      
   5          #include "LCD1602.h"
   6          
   7          #define UART_ASK 0xA5
   8          
   9          sbit OPEN = P1^0;//连接CPLD的IO27
  10          sbit GATE = P3^2;//连接CPLD的IO28
  11          sbit CLRP = P3^5;//连接CPLD的IO29
  12          
  13          //定义CPLD内部计数器地址
  14          unsigned char xdata REG0 _at_ 0xfff0;
  15          unsigned char xdata REG1 _at_ 0xfff1;
  16          unsigned char xdata REG2 _at_ 0xfff2;
  17          unsigned char xdata REG3 _at_ 0xfff3;
  18          
  19          unsigned char str_buff[30];
  20          unsigned char counter;
  21          
  22          
  23          void timer0_init()
  24          {
  25   1              TMOD|=0x09;
  26   1              ET0=1;
  27   1              EA=1;
  28   1          TR0=0;      
  29   1      }
  30          
  31          
  32          void delay_ms(unsigned int n)
  33          {
  34   1           unsigned char j;
  35   1           while(n--)
  36   1           for(j=0;j<230;j++);//230是实验测试所得！
  37   1      }
  38          
  39          
  40          
  41          main()
  42          {
  43   1              double fx,temp;
  44   1              uint temp1;
  45   1              lcd1602_init();
  46   1              timer0_init();
  47   1              OPEN=0;
  48   1         
  49   1         lcd_put_xys(1,1,"Cymometer");        
  50   1      
  51   1      while(1)
  52   1              {                       
  53   2                      OPEN=0;
  54   2                      temp1=0;
  55   2                      
C51 COMPILER V8.02   MAIN                                                                  07/18/2008 16:32:01 PAGE 2   

  56   2                      while(GATE)
  57   2                      if(temp1++>65000) break; //超时跳出
  58   2                      
  59   2                      CLRP=1;  //清零CPLD内部计数器   
  60   2                      CLRP=0;
  61   2                      TH0=0;  //清除单片机内部计数器
  62   2                      TL0=0;
  63   2                      counter=0;
  64   2                      
  65   2                      TR0=1; //开启定时器0
  66   2                      OPEN=1;//开启CPLD内部计数器
  67   2                      while(counter<1);
  68   2                      
  69   2                      OPEN=0;
  70   2                      temp1=0;
  71   2      
  72   2                      while(GATE)
  73   2                      if(temp1++>65000) break;//超时跳出
  74   2              
  75   2                  TR0=0; //关闭定时器0
  76   2                      
  77   2      
  78   2                      temp=counter*65536+TH0*256+TL0;         
  79   2                      fx=1843200/temp;//(22118400/12=1843200)
  80   2                      fx=fx*(REG2*65536+REG1*256+REG0);//和数据总线P0相关
  81   2                      sprintf(str_buff,"%-8.3fHz",fx);
  82   2                      lcd_put_xys(1,2,"               ");     //清屏
  83   2                      lcd_put_xys(1,2,"f=");  
  84   2                      lcd_put_xys(3,2,str_buff);      
  85   2                      delay_ms(1000);
  86   2              }
  87   1      }
  88          
  89          
  90          void timer0_int(void) interrupt 1
  91          {
  92   1        counter++;
  93   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    517    ----
   CONSTANT SIZE    =     38    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =     31       8
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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