led.c

来自「声光控毕业设计PROTUSE仿真」· C语言 代码 · 共 43 行

#include <reg52.h>
#define uchar unsigned char
#define uint unsigned int
uint count;
sbit KEY1=P1^6;  
sbit KEY2=P1^7;  
sbit LED=P2^0;  
void time0(void) interrupt 1
{
	TH0=(65536-50000)/256;
	TL0=(65536-50000)%256;
	count++;
	if(count>=200)
	{
		count=0;
		LED=1;
	}
}
void main()
{ 	
	TMOD=0X01;
	TH0=(65536-50000)/256;
	TL0=(65536-50000)%256;
	EA=1;
	ET0=1;
	TR0=0;
	TF0=0;
	LED=1;
	count=0;
	while(1)
	{
		if(KEY1==1&&KEY2==0)
		{
			LED=0;
			TR0=1;
		}
		if(TF0==1)
		{
			TF0=0;
			TR0=0;
		}	
	}	
}