t1-500hz-chaxun.c

keil c语言

// T0查询方式在P1_0输出500Hz方波
// fosc=12MHz
// 2008单片机复习
#include <regx52.h>

main()
{
	TMOD = 0x01;
	TH0 = (65536-994)/256; 
	TL0 = (65536-994)%256;
	TR0=1;

 	while(1)
	{

		if(TF0==1)
		{
		   	TH0 = (65536-994)/256; 
			TL0 = (65536-994)%256;
			P1_0=!P1_0;
			TF0 =0;
		 }	
	}

}