#include
#define uint unsigned int
#define uchar unsigned char
sbit LED=P1^0;
sbit Flag=P3^2;
sbit BUZZER=P2^3;
void Init_Timer0(void)
{
TMOD |= 0x01;
TH0=0xf0;
TL0=0x00;
EA=1;
ET0=1;
TR0=1;
}
void Timer0_isr(void) interrupt 1 using 1
{
TH0=0x0f;
TL0=0x00;
}
void delay(unsigned int cnt)
{
while(--cnt);
}
main()
{
Init_Timer0(); //定时器初始化
LED=1; //指示灯灭
if(Flag==0)
{
while(1)
{
LED=0; //指示灯亮
BUZZER=1;
delay(1);
}
}
}