delay.c

此程序是基于c8051f020平台实现的是等精度频率计的测量控制部分

#include<c8051f020.h>
//#include "hao.h"
#define uint unsigned int
#define uchar unsigned char
#define ulong unsigned long int

void delay_tms(uint t1)
{
   TF2 = 0;                   // clear Timer2 overflow flag
   TR2 = 1;                   // turn Timer2 On
   
   while (t1 != 0)
   {
      if(TF2)                // once overflow consume 1ms
	  {
         TF2 = 0;
         t1--;
      }
   }
   
   TR2 = 0;                  // turn Timer 2 Off
}



void delay(uchar k)
		{
		    uchar a,b;
			for(a=k;a>0;a--)
				for(b=200;b>0;b--);	
		}