📄 ds12c887.c
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#include<reg51.h>
#define uchar unsigned char
#define uint unsigned int
sbit s1=P1^1;
sbit s2=P1^3;
sbit s3=P1^5;
sbit s4=P1^7;
sbit lcdrs=P3^0;
sbit lcden=P3^1;
sbit irq=P3^2;
sbit beep=P3^3;
sbit as=P3^4;
sbit rw=P3^5;
sbit ds=P3^6;
sbit cs=P3^7;
bit flag1,flag_alarm;
uchar s1num,flag;
char miao,shi,fen,year,month,day,week,alarm_miao,alarm_shi,alarm_fen;
uchar code table1[]="20 - - ";
uchar code table2[]=" : : ";
//////////////////////////////////////////////////////////////////////////////
void delay(uint z)
{
uint x,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}
void di()
{
beep=1;
delay(200);
beep=0;
}
///////////1602和ds12c887读写部分//////////////////////////////////////////
void write_ds(uchar add,uchar date)
{
as=0;
cs=0;
ds=1;
rw=1;
as=1;
P0=add;
as=0;
rw=0;
P0=date;
rw=1;
as=1;
cs=1;
}
uchar read_ds(uchar add)
{
uchar ds_date;
as=0;
cs=0;
ds=1;
rw=1;
as=1;
P0=add;
as=0;
ds=0;
P0=0xff;
ds_date=P0;
ds=1;
as=1;
cs=1;
return ds_date;
}
void write_com(uchar com)
{
lcdrs=0;
P0=com;
delay(5);
lcden=1;
lcden=0;
}
void write_data(uchar date)
{
lcdrs=1;
P0=date;
delay(5);
lcden=1;
lcden=0;
}
/////////读取时间和显示部分///////////////////////////////////////////////////
void gettime()
{
year=read_ds(9);
month=read_ds(8);
day=read_ds(7);
week=read_ds(6);
shi=read_ds(4);
fen=read_ds(2);
miao=read_ds(0);
}
void write_sfm(uchar add,uchar date)
{
uchar shi,ge;
shi=date/10;
ge=date%10;
write_com(0x80+0x40+add);
write_data(0x30+shi);
write_data(0x30+ge);
}
void write_nyr(uchar add,uchar date)
{
uchar shi,ge;
shi=date/10;
ge=date%10;
write_com(0x80+add);
write_data(0x30+shi);
write_data(0x30+ge);
}
void write_week(uchar week)
{
write_com(0x80+12);
switch(week)
{
case 1: write_data('M');
delay(5);
write_data('O');
delay(5);
write_data('N');
break;
case 2: write_data('T');
delay(5);
write_data('H');
delay(5);
write_data('U');
break;
case 3: write_data('W');
delay(5);
write_data('E');
delay(5);
write_data('D');
break;
case 4: write_data('T');
delay(5);
write_data('H');
delay(5);
write_data('U');
break;
case 5: write_data('F');
delay(5);
write_data('R');
delay(5);
write_data('I');
break;
case 6: write_data('S');
delay(5);
write_data('A');
delay(5);
write_data('T');
break;
case 7: write_data('S');
delay(5);
write_data('U');
delay(5);
write_data('N');
break;
}
}
void display()
{
write_sfm(10,miao);
write_sfm(7,fen);
write_sfm(4,shi);
write_week(week);
write_nyr(3,year);
write_nyr(6,month);
write_nyr(9,day);
}
/////////键盘扫描部分//////////////////////////////////////////
void read_alarm( )
{
alarm_miao=read_ds(1);
alarm_fen=read_ds(3);
alarm_shi=read_ds(5);
}
void keyscan()
{
if(flag_alarm==1)
{
if((s1==0)||(s2==0)||(s3==0)||(s4==0))
{
delay(5);
if((s1==0)||(s2==0)||(s3==0)||(s4==0))
{
while(!(s1&&s2&&s3&&s4));
di();
flag_alarm=0;
}
}
}
if(s1==0)
{
delay(5);
if(s1==0)
{
s1num++;
if(flag1==1)
if(s1num==4)
s1num=1;
flag=1;
while(!s1);
switch(s1num)
{
case 1:write_com(0x80+0x40+10);
write_com(0x0f);
break;
case 2:write_com(0x80+0x40+7);
break;
case 3:write_com(0x80+0x40+4);
break;
case 4:write_com(0x80+12);
break;
case 5:write_com(0x80+9);
break;
case 6:write_com(0x80+6);
break;
case 7:write_com(0x80+3);
break;
case 8:s1num=0;
write_com(0x0c);
flag=0;
write_ds(0,miao);
write_ds(2,fen);
write_ds(4,shi);
write_ds(6,week);
write_ds(7,day);
write_ds(8,month);
write_ds(9,year);
break;
}
}
}
if(s1num!=0)
{
if(s2==0)
{
delay(5);
{
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(s1num==4)
{
week++;
if(week==8)
week=1;
write_week(week);
write_com(0x80+12);
}
if(s1num==5)
{
day++;
if(day==32)
day=1;
write_nyr(9,day);
write_com(0x80+9);
}
if(s1num==6)
{
month++;
if(month==13)
month=1;
write_nyr(6,month);
write_com(0x80+6);
}
if(s1num==7)
{
year++;
if(year==100)
day=0;
write_nyr(3,year);
write_com(0x80+3);
}
}
}
if(s3==0)
{
delay(5);
if(s3==0)
{
while(!s3);
if(s1num==1)
{
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);
}
if(s1num==4)
{
week--;
if(week==0)
week=7;
write_week(week);
write_com(0x80+12);
}
if(s1num==5)
{
day--;
if(day==0)
day=31;
write_nyr(9,day);
write_com(0x80+9);
}
if(s1num==6)
{
month--;
if(month==0)
month=12;
write_nyr(6,month);
write_com(0x80+6);
}
if(s1num==7)
{
year--;
if(year==0)
day=99;
write_nyr(3,year);
write_com(0x80+3);
}
}
}
}
if(s4==0)
{
delay(5);
if(s4==0)
{
flag1=~flag1;
while(!s4);
if(flag1==0)
{
s1num=0;
write_com(0x0c);
flag=0;
write_com(0x80+0x40);
write_data(' ');
write_data(' ');
write_data(' ');
write_ds(1,miao);
write_ds(3,fen);
write_ds(5,shi);
}
else
{
s1num=0;
write_com(0x0c);
read_alarm();
miao=alarm_miao;
fen=alarm_fen;
shi=alarm_shi;
write_com(0x80+0x40);
write_data('A');
write_data('L');
write_data('R');
write_sfm(4,alarm_shi);
write_sfm(7,alarm_fen);
write_sfm(10,alarm_miao);
}
}
}
}
////////////////////////////////////////////////////////////////////
/////////初始化部分//////////////////////////////////////////////////////////////////
void set_time( )
{
write_ds(0x00,50);
write_ds(0x01,10);
write_ds(0x02,59);
write_ds(0x03,1);
write_ds(0x04,9);
write_ds(0x05,10);
write_ds(0x06,4);
write_ds(0x07,26);
write_ds(0x08,7);
write_ds(0x09,12);
}
void init()
{
uchar num;
EA=1;
EX0=1;
IT0=1;
flag1=0;
s1num=0;
lcden=0;
write_ds(0x0A,0x20);
write_ds(0x0B,0x26);
set_time();
write_com(0x38);
write_com(0x0c);
write_com(0x06);
write_com(0x01);
write_com(0x81);
for(num=0;num<10;num++)
{
write_data(table1[num]);
delay(5);
}
write_com(0x80+0x40+4);
for(num=0;num<8;num++)
{
write_data(table2[num]);
delay(5);
}
}
//////////////////////////////////////////////////////////////
void main()
{
init();
gettime();
display();
while(1)
{
keyscan();
if(flag_alarm==1)
{
di();
delay(100);
di();
delay(500);
}
if(flag==0&&flag1==0)
{
gettime();
display();
}
}
}
void ser() interrupt 0
{
uchar c;
flag_alarm=1;
c=read_ds(0x0c);
}
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