51单片机(AT89C52)定时器

fanichicl

51单片机(AT89C52)定时器

#include

#define uchar unsigned char

#define uint unsigned int

uchar i,temp;

void init()

{

TMOD=0x01;

TH0=(65536-46080)/256;

TL0=(65536-46080)%256;

ET0=1;

EA=1;

TR0=1;

}

void main()

{

i=0;

temp=0x01;

init();

while(1);

}

void timer0() interrupt 1

{

TH0=(65536-46080)/256;

TL0=(65536-46080)%256;

if(i<8)

{

P2=temp;

i++;

temp<<=1;

}

else

{

i=0;

temp=0x01;

}

}

Mhza

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