meas.c

用C51写的单片机程序

#include <reg51.h>
#define uchar unsigned char
#define uint  unsigned int
#define ulong unsigned long
#include "7219.h"
#include "freq.h"

void binch(void)
{uchar i;
 uint temp;
 temp=(ulong)422200/fre+23;
 if(temp<=28) temp=0;
 else if(temp<=51) temp=(temp-30)*10/3;
 else temp=(temp-24)*10/4;
 for(i=4;i>0;i--)  {num[i-1]=temp%10;temp/=10;}
}

void main(void)
{ini_7219();
 P1=0xff;
 TMOD=0x51;
 PT0=1;ET0=1;ET1=1;EA=1;
 TR0=1;TR1=1;
 while(1){ if(T0flag){T0flag=0;binch();dir();ini_time();TR0=1;TR1=1;}
         }
}