#include "reg52.h"
#include "Zlg7290.h"				//Zlg7290庫
#include "viic_c51.h"				//iic庫

unsigned char scount,pcount;

void counter1_int() interrupt 3
{	
	TR1=0;				//關(guān)閉定時(shí)器
	TR0=0;
	pcount++;			//計(jì)算溢出的次數(shù)
	TF1=0;				//清除溢出標(biāo)志
	TR1=1;				//開定時(shí)器
	TR0=1;
}

void timer0_int() interrupt 1
{
	TR0=0;					//關(guān)閉定時(shí)器
	//TR1=0;
	TH0=0x4C;				//重裝定時(shí)器
	TL0=0x19;
	TF0=0;					//清除溢出標(biāo)志
	scount--;
	if(scount>0)			//到1s了嗎？
	{
		TR0=1;				//沒到，開定時(shí)器
		//TR1=1;
	}	
	else
		TR1=0;				//到了，停止T1的計(jì)數(shù)
}

main()
{
	unsigned char a[8];
	unsigned char i,resh,resl;
	unsigned long int freq;
	TMOD=0xD1;						//定時(shí)器0工作在定時(shí)方式1，定時(shí)器1工作在計(jì)數(shù)方式1
	TH0=0x4C;						//50ms
	TL0=0x19;
	TH1=0;							//計(jì)數(shù)值清0
	TL1=0;
	scount=20;						//定時(shí)1s
	PT1=1;							//定時(shí)器1高優(yōu)先級(jí)
	ET1=1;							//使能定時(shí)器中斷
	ET0=1;
	EA=1;
	TR0=1;							//啟動(dòng)定時(shí)器和計(jì)數(shù)器
	TR1=1;

	for (i=0;i<8;++i)
		a[i]=0;
	ZLG7290_SendBuf(a,5);
	while(1)
	{
		if(!scount)					//1s時(shí)間到
		{
			//TR1=0;
			//TR0=0;
			resh=TH1;				//取出計(jì)數(shù)值
			resl=TL1;
			i=pcount;
			pcount=0;
			TH1=0;					//計(jì)數(shù)值清零
			TL1=0;
			TH0=0x4C;				//重裝定時(shí)器0
			TL0=0x19;
			scount=20;				//定時(shí)1S
			TR0=1;					//啟動(dòng)定時(shí)器和計(jì)數(shù)器
			TR1=1;
			freq=65535*i+resh*256+resl;			//計(jì)算頻率值
			a[0]=freq%10;						//將各位分離顯示
			a[1]=(freq/10)%10;
			a[2]=(freq/100)%10;
			a[3]=(freq/1000)%10;
			a[4]=(freq/10000)%10;
			a[5]=freq/100000;
			ZLG7290_SendBuf(a,6);				//送ZLG7290顯示
			//delayNS(100);*/
		}  
	}
}