}

/*定時(shí)器T0 5mS初始化*/

void init_timer()

{

TMOD=0x01;

TH0=-(4800/256);

TL0=-(4800%256);

IE=0x82;

TR0=1;

}

/*掃描按鍵子函數(shù)*/

void sCAN_key()

{

delay(1);

if(P3_4==0)set++;

if(set>=4)set=0;

if(set==1)flag=0x55;

F0:if(P3_4==0)goto F0; /*按鍵未釋放，在此等候*/

}

/*延時(shí)子函數(shù)*/

void delay(uint k)

{

uint i,j;

for(i=0;i

for(j=0;j<121;j++)

{;}}

}

/*5mS定時(shí)中斷服務(wù)子函數(shù)*/

void zd(void) interrupt 1

{

TH0=-(4800/256);

TL0=-(4800%256);

deda++;

}

/*調(diào)整走時(shí)時(shí)間*/

void time_adj()

{uchar m;

if(P3_5==0)delay(1);

if(P3_5==0)hour++;

if(hour==24)hour=0;

for(m=0;m<30;m++)

{

dirve();

if(P3_2==0)P1_7=0;

else P1_7=1;

delay(1);

}

if(P3_7==0)delay(1);

if(P3_7==0)min++;

if(min==60)min=0;

for(m=0;m<30;m++)

dirve();

if(P3_2==0)P1_7=0;

else P1_7=1;

delay(1);

}

}

/*調(diào)整鬧時(shí)時(shí)間*/

void time1_adj()

{uchar m;

if(P3_5==0)delay(1);

if(P3_5==0)t_hour++;

if(t_hour==24)t_hour=0;

for(m=0;m<30;m++)

{

t_dirve();

}

if(P3_7==0)delay(1);

if(P3_7==0)t_min++;

if(t_min==60)t_min=0;

for(m=0;m<30;m++)

{

t_dirve();

}

}

/*時(shí)、分、秒單元及走時(shí)單元轉(zhuǎn)換*/

void conv()

{

if(deda<=100)d_05s=0;

else d_05s=1;

if(deda>=200){sec++;deda=0;}

if(sec==60){min++;sec=0;}

if(min==60){hour++;min=0;}

if(hour==24){hour=0;}

}

/*走時(shí)時(shí)間輸出驅(qū)動(dòng)子函數(shù)*/

void dirve()

{

P1=DATA_7SEG[hour/10];P3=0xf7;delay(1);

P1=DATA_7SEG[hour%10];P3=0xfb;delay(1);

if(d_05s==1){if(P3_2==0)P1_7=0;else P1_7=1;}

delay(1);

P1=DATA_7SEG[min/10];P3=0xfd;delay(1);

if(o_f==1){if(P3_1==0)P1_7=0;else P1_7=1;delay(1);}

P1=DATA_7SEG[min%10];P3=0xfe;delay(1);

}

/*鬧時(shí)時(shí)間輸出驅(qū)動(dòng)子函數(shù)*/

void t_dirve()

{

P1=DATA_7SEG[t_hour/10];P3=0xf7;delay(1);

if(P3_3==0)P1_7=0;else P1_7=1;

delay(1);

P1=DATA_7SEG[t_hour%10];P3=0xfb;delay(1);

P1=DATA_7SEG[t_min/10];P3=0xfd;delay(1);

P1=DATA_7SEG[t_min%10];P3=0xfe;delay(1);

}

/*判別鬧時(shí)到否子函數(shù)*/

void p_out()

{

if(o_f==1){

if(t_hour==hour){if(t_min==min)

if(P3_0==0){P1_7=0;delay(1);}

else P1_7=1;

}

}

}

/*主函數(shù)*/

void main()

{

init_timer(); /*定時(shí)器T0初始化*/

while(1) /*無(wú)限循環(huán)*/

{

if(P3_4==0)scan_key(); /*有按鍵，調(diào)用

鍵掃描子函數(shù)*/

switch(set) /*根據(jù)set鍵值散轉(zhuǎn)*/

{

case 0:time();break; /*走時(shí)時(shí)間程序*/

case 1:time1_adj();break; /*鬧時(shí)時(shí)間調(diào)整*/

case 2:time_adj();break; /*走時(shí)時(shí)間調(diào)整*/

case 3:time1_of();break; /*啟/停鬧時(shí)*/

default:break; /*其它退出*/

}

if(flag!=0x55) /*判斷掉電標(biāo)志*/

{for(m=0;m<100;m++) /*點(diǎn)亮四個(gè)8字400mS*/

{

P1=0x80;P3=0xf7;delay(1);

P1=0x80;P3=0xfb;delay(1);

P1=0x80;P3=0xfd;delay(1);

P1=0x80;P3=0xfe;delay(1);

}

P1=0xff;P3=0xff;delay(400); /*熄滅四個(gè)8字400mS*/