第1个回答 推荐于2017-10-05
TMOD=0x01,打开的是定时器T0,却TR1=1启动定时器T1。
#include<reg52.h>
#include<intrins.h>
#define uint unsigned int
#define uchar unsigned char
uchar temp;
int t;
void main()
{
TMOD=0x01;
EA=1;
ET1=1;
TR1=1;
TH1=(65536-50000)/256;
TL1=(65536-50000)%256;
P1=0xfe;
temp=P1;
while(1)
{
}
}
void T1_time() interrupt 3
{ TH1=(65536-50000)/256;
TL1=(65536-50000)%256;
t++;
if(t==2)
{
t=0;
temp=_crol_(temp,1);
P1=temp;
}
}