Question

用AT89C51单片机控制通过按键输入设置新的定时时间怎么做

Answer 1

uchar WhenThe;//时
uchar Minute;//分钟
uchar Second;//秒钟
uchar M_S_Mark;//时/分钟/秒钟标志

void Ammonium_key()

{
if(k1==0)
{

delay(200);//按键延时消抖

if (k1!=0)
{

M_S_Mark++;

if (M_S_Mark>3)
{
M_S_Mark =0;
}
}

}

if(k2==0)
{

delay(200);//按键延时消抖

if (k2!=0)
{
if (M_S_Mark==1)
{
WhenThe++;
}

if (M_S_Mark==2)
{
Minute++;
}

if (M_S_Mark==3)
{
Second++;
}

}

}

if(k3==0)
{

delay(200);//按键延时消抖

if (k3!=0)
{
if (M_S_Mark==1)
{
WhenThe--;
}

if (M_S_Mark==2)
{
Minute--;
}

if (M_S_Mark==3)
{
Second--;
}

}

}
}