51單片機(jī)小鬧鐘

if(hour_key==0) //時(shí)按鍵
{

delay(10);
if(hour_key==0)
{
while(!hour_key)display(hour1,minu1,sec1); //消除數(shù)碼管的抖動(dòng)

if(mode_number%2==0)//如果在時(shí)鐘模式下，時(shí)鐘時(shí)+1
hour1++;
else hour0++;//如果在鬧鐘模式下，鬧鐘時(shí)+1

if(hour1==12)
{
hour1=0;
}

if(hour0==12)
{
hour0=0;
}

}
}

if(minu_key==0) //分按鍵
{

delay(10);
if(minu_key==0)
{
while(!minu_key)display(hour1,minu1,sec1); //消除數(shù)碼管的抖動(dòng)
if(mode_number%2==0)
minu1++;
else
minu0++;

if(minu1==60)
{
minu1=0;
}

if(minu0==60)
{
minu0=0;
}

}

}

if(mode_key==0) //模式按鍵

{

delay(10);
if(mode_key==0)
{

while(!mode_key)display(hour1,minu1,sec1); //數(shù)碼管的抖動(dòng)

mode_number++;


}

}

if(stopsounder_key==0) //關(guān)鬧鐘按鍵
{
sounder_flag=1;
delay(10);
if(stopsounder_key==0)
{

while(!stopsounder_key)display(hour1,minu1,sec1);

beep=1;
}

}

}

void display(uchar hour,uchar minu,uchar sec)
{
h1=hour/10;
h2=hour;

m1=minu/10;
m2=minu;

s1=sec/10;
s2=sec;

P2=0xff;
P1=table[h1];
P2=select[0];
delay(5);

P2=0xff;
P1=table[h2];
P2=select[1];
delay(5);

P2=0xff;
P1=0x40;;
P2=select[2];
delay(5);

P2=0xff;
P1=table[m1];
P2=select[3];
delay(5);

P2=0xff;
P1=table[m2];
P2=select[4];
delay(5);

P2=0xff;
P1=0x40;
P2=select[5];
delay(5);

P2=0xff;
P1=table[s1];
P2=select[6];
delay(5);

P2=0xff;
P1=table[s2];
P2=select[7];
delay(5);

}

void timer1_int() interrupt 3 //控制時(shí)鐘工作 50ms
{
TH1=(65536-50000)/256;
TL1=(65536-50000)%6;
b++;
if(b==10)led=~led;
if(b==20)
{
led=~led;
b=0;
sec1++;
if(sec1==60)
{

sounder_flag=0; //每隔一分鐘，釋放檢測(cè)鬧鐘

sec1=0;
minu1++;
if(minu1==60)
{
minu1=0;
hour1++;
if(hour1==24)
hour1=0;

}
}

}

}

void main()
{
init();


for(;;)
{

keyscan(); //按鍵掃描


if(mode_number%2==0) //正常時(shí)鐘顯示
{

display(hour1,minu1,sec1);
}

else
{


display(hour0,minu0,sec0); //設(shè)定時(shí)間顯示

delay(100);

}




if(hour0==hour1&&minu0==minu1) //如果設(shè)定的時(shí)間到
{
if(!sounder_flag) //且按鍵按下一分鐘之后
{
beep=0;//鬧鈴開


}

}



}

}