#include
#define uint unsigned int
uint i=0;
void delay(uint z) //推迟函数
{
uint x,y;
for(x=z;x>0;x–)
for(y=20;y>0;y–);
}
void main (void)
{
TMOD=0x10;
TH1=(65536-50000)/256;
TL1=(65536-50000)%6;
EA=1;
ET1=1;
TR1=1;
while(1)
{
if(i==20)
{
i=0;
P0=0xaa;
delay(500);
P0=0xff;
delay(500);
}
}
}
void exter1() interrupt 3
{
TH1=(65536-50000)/256; //中止函数中也需求赋定时器初值
TL1=(65536-50000)%6;
i++;
}
