230问答网 > 急需电子时钟的设计，利用单片机AT89C52、时钟芯片DS1302、1602液晶显示器来控制的，要有c程序。

急需电子时钟的设计，利用单片机AT89C52、时钟芯片DS1302、1602液晶显示器来控制的，要有c程序。

2024-12-16 09:14:18

推荐回答（5个）

回答1：

#include
#include
void delay(uint z)
{
uint x,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}

void didi()
{
beep=0;
delay(50);
beep=1;
delay(100);
beep=0;
delay(50);
beep=1;
}
void write_com(uchar com)
{
rs=0;
lcden=0;
P0=com;
delay(5);
lcden=1;
delay(5);
lcden=0;
}

void write_date(uchar date)
{
rs=1;
lcden=0;
P0=date;
delay(5);
lcden=1;
delay(5);
lcden=0;
}

void init()
{
uchar num;
EA=1;
EX0=1;
IT0=1;

dula=0;
wela=0;
lcden=0;
// set_time();
set_alarm(14,13,10);
write_ds(0x0B,0x26);
read_ds(0x0c);
// fen=59;
// miao=53;
// shi=23;
write_com(0x38);
write_com(0x0c);
write_com(0x06);
write_com(0x01);
write_com(0x80);
for(num=0;num<15;num++)
{
write_date(table[num]);
delay(5);
}
write_com(0x80+0x40);
for(num=0;num<12;num++)
{
write_date(table1[num]);
delay(5);
}

}

void write_sfm(uchar add,uchar date)
{
uchar shi,ge;
shi=date/10;
ge=date%10;
write_com(0x80+0x40+add);
write_date(0x30+shi);
write_date(0x30+ge);
}

void keyscan()
{
rd=0;
if(flag1==1)
{
if(s2==0)
{
delay(5);
if(s2==0)
{
while(!s2);
flag1=0;
}

}
if(s3==0)
{
delay(5);
if(s3==0)
{
while(!s3);
flag1=0;
}

}
}

if(s1==0)
{
delay(5);
if(s1==0)
{ s1num++;
flag=1;
flag1=0;
while(!s1);
if(s1num==1)
{
TR0=0;
write_com(0x80+0x40+10);
write_com(0x0f);
}
}
if(s1num==2)
{
write_com(0x80+0x40+7);
}
if(s1num==3)
{
write_com(0x80+0x40+4);
}
if(s1num==4)
{
s1num=0;
write_com(0x0c);
flag=0;
write_ds(0,miao);
write_ds(2,fen);
write_ds(4,shi);
}

}
if(s1num!=0)
{
if(s2==0)
{
delay(1);
if(s2==0)
{
while(!s2);
if(s1num==1)
{
miao++;
if(miao==60)
miao=0;
write_sfm(10,miao);
write_com(0x80+0x40+10);

}
if(s1num==2)
{
fen++;
if(fen==60)
fen=0;
write_sfm(7,fen);
write_com(0x80+0x40+7);
}
if(s1num==3)
{
shi++;
if(shi==24)
shi=0;
write_sfm(4,shi);
write_com(0x80+0x40+4);
}
}
}
if(s3==0)
{
delay(1);
if(s3==0)
{
while(!s3);
if(s1num==1)
{
/* if(miao==0)
{
miao=59;
write_sfm(10,miao);
write_com(0x80+0x40+10);
}*/
miao--;
if(miao==-1)
miao=59;
write_sfm(10,miao);
write_com(0x80+0x40+10);
}
if(s1num==2)
{
fen--;
if(fen==-1)
fen=59;
write_sfm(7,fen);
write_com(0x80+0x40+7);
}
if(s1num==3)
{
shi--;
if(shi==-1)
shi=23;
write_sfm(4,shi);
write_com(0x80+0x40+4);
}
}
}
}
}

void write_ds(uchar add,uchar date)
{
dscs=0;
dsas=1;
dsds=1;
dsrw=1;
P0=add;
dsas=0;
dsrw=0;
P0=date;
dsrw=1;
dsas=1;
dscs=1;
}

uchar read_ds(uchar add)
{
uchar ds_date;
dsas=1;
dsds=1;
dsrw=1;
dscs=0;
P0=add;
dsas=0;
dsds=0;
P0=0xff;
ds_date=P0;
dsds=1;
dsas=1;
dscs=1;
return ds_date;
}

void set_time()
{
write_ds(4,10);
write_ds(2,32);

}

void set_alarm(uchar ashi,uchar afen,uchar amiao)
{
write_ds(1,amiao);
write_ds(3,afen);
write_ds(5,ashi);
}
void main()
{
init();
while(1)
{
keyscan();
if(flag1==1)
didi();
if(flag==0)
{
miao=read_ds(0);
fen=read_ds(2);
shi=read_ds(4);
write_sfm(10,miao);
write_sfm(7,fen);
write_sfm(4,shi);
}
}
}

void exter() interrupt 0
{ uchar c;
flag1=1;
c=read_ds(0x0c);
}