24秒倒计时

ID:370077 · 发表于 2018-7-12 11:35

#include<stc12c5a60s2.h>
sbit LED=P2^0;
sbit BEEP=P1^0;
sbit CLEAR=P3^3;
sbit START=P3^2;
typedef unsigned int uint;
typedef unsigned char uchar;
void delay(unsigned int i)
{
while(i--);
}

void main()
{
uint T_Count=0;
uchar count;

LED=1;
BEEP=1;
CLEAR=1;
START=1;

TMOD=0x01;
TH0=(65535-50000)/256;
TL0=(65535-50000)%256;

while(START);
TR0=1;
count=48;

while(1)
{
if(TF0==1)
{
TF0=0;
TH0=(65535-50000)/256;
TL0=(65535-50000)%256;
if(++T_Count==10)
{
T_Count=0;
LED=~LED;
count--;
if(count==0)
while(CLEAR)
{
BEEP=1;
delay(200);
}
BEEP=1;
while(START);
count=48;
}
}
}
}

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