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#include<reg51.h>
typedef unsigned char uchar;
typedef unsigned int uint;
uchar code table[]= " 2019/07/17/Tue ";
uchar code table1[]=" 12/05/10 ";
uchar code table2[]={"Tus"};
sbit RS=P2^0;
sbit RW=P2^1;
sbit E=P2^2;
sbit K1=P1^0;
sbit K2=P1^1;
sbit K3=P1^2;
sbit K4=P1^3;
sbit RST=P2^5;
sbit SCK=P2^6;
sbit IO=P2^7;
char shi,fen,miao,flag,dat,ri,yue,nian,xingqi;
void write_ds(uchar add,uchar date);
//延遲
void delay(uchar z)
{
uchar x,y;
for(x=z;x>0;x--)
for(y=10;y>0;y--);
}
//P0口寫操作，先寫地址，再寫數據
void write_com(uchar com)
{
RS=0;
RW=0;
P0=com;
E=1;
delay(3);
E=0;
}
void write_date(uchar date)
{
RS=1;
RW=0;
P0=date;
E=1;
delay(3);
E=0;
}
//LCD顯示初始化
void init_lcd()
{
uchar num;
write_com(0X38);
write_com(0X0C);
write_com(0X06);
write_com(0X80);
for(num=0;num<16;num++)
{
write_date(table[num]);
delay(5);
}
write_com(0x80+0x40);
for(num=0;num<20;num++)
{
write_date(table1[num]);
delay(5);
}
}
//LCD顯示
void display1(uchar add,uchar date) //第一行顯示
{
uchar temp,shi,ge;
temp=date;
shi=temp/16;
ge=temp%16;
write_com(0x80+add);
write_date(0x30+shi); //這里要注意，顯示的是ASCII碼！
write_date(0x30+ge);
}
void display(uchar add,uchar date) //第二行顯示
{
uchar temp,shi,ge;
temp=date;
shi=temp/16;
ge=temp%16;
write_com(0x80+0x40+add);
write_date(0x30+shi); //這里要注意，顯示的是ASCII碼！
write_date(0x30+ge);
}
//鍵盤掃描
void keyscan()
{
static unsigned char num;
K1=0;
//光標移動(入口地址)
if(K2==0)
{
delay(5);
if(K2==0)
{
while(!K2);
delay(5);
while(!K2);
num++;
flag=1;
}//異常重要！�。�！
if(num==1)
{
write_com(0X80+0X40+11);
write_com(0X0F);
}
if(num==2)
{
write_com(0X80+0X40+8);
write_com(0X0F);
}
if(num==3)
{
write_com(0X80+0X40+5);
write_com(0X0F);
}
if(num==4)
{
write_com(0x80+10);
write_com(0x0f);
}
if(num==5)
{
write_com(0x80+7);
write_com(0x0f);
}
if(num==6)
{
write_com(0x80+4);
write_com(0x0f);
}
if(num==7)
{
num=0;
write_com(0X0C);
write_ds(0x80,miao); //要在最后一次性寫入，時分和分針定時的時候秒針還在走。
write_ds(0x82,fen);
write_ds(0x84,shi);
write_ds(0x86,ri);
write_ds(0x88,yue);
write_ds(0x8A,nian);
flag=0;
}
}
//修改時間，增加1
if(K3==0)
{
delay(5);
if(K3==0)
{
while(!K3);
delay(5);
while(!K3);
//修改秒
if(num==1)
{
uchar ge,shi;
miao++;
shi=miao/16;
ge=miao%16;
//秒的修整
if(ge>=10)
{
ge=0;
shi++;
if(shi==6){shi=0;}
}
//顯示修整值
miao=shi*16+ge;
display(10,miao);
write_com(0x80+0x40+11);//把光標位置移回來。
write_ds(0x80,miao);
}
//修改分鐘
if(num==2)
{
uchar ge,shi;
fen++;
shi=fen/16;
ge=fen%16;
if(ge>=10)
{
ge=0;
shi++;
if(shi==6){shi=0;}
}
fen=shi*16+ge;
display(7,fen);
write_com(0x80+0x40+8);
write_ds(0x82,fen);
}
//修改小時
if(num==3)
{
uchar ge,shi1;
shi++;
shi1=shi/16;
ge=shi%16;
if(ge>=10)
{
ge=0;
shi1++;
}
if((shi1==2)&&(ge==4))
{
shi1=0;
ge=0;
}
shi=shi1*16+ge;
display(4,shi);
write_com(0x80+0x40+5);
write_ds(0x84,shi);
}
}
}
//修改時間，減少1
if(K4==0)
{
delay(5);
if(K4==0)
{
while(!K4);
delay(5);
while(!K4);
//修改秒
if(num==1)
{
uchar ge,shi;
miao--;
shi=miao/16;
ge=miao%16;
//減法0之后應該是9，而不是“？”
if(ge==0x0f){ge=9;}
//修改時間，當到達0后，再減的話是-1
if(ge==-1)
{
shi=5;
ge=9;
}
miao=shi*16+ge;
display(10,miao);
write_com(0x80+0x40+11);
write_ds(0x80,miao);
}
//修改分鐘
if(num==2)
{
uchar ge,shi;
fen--;
shi=fen/16;
ge=fen%16;
if(ge==0x0f){ge=9;}
if(ge==-1)
{
shi=5;
ge=9;
}
fen=shi*16+ge;
display(7,fen);
write_com(0x80+0x40+8);
write_ds(0x82,fen);
}
//修改小時
if(num==3)
{
uchar ge,shi1;
shi--;
shi1=shi/16;
ge=shi%16;
if(ge==0x0f){ge=9;}
if(ge==-1)
{
shi1=2;
ge=3;
}
shi=shi1*16+ge;
display(4,shi);
write_com(0x80+0x40+5);
write_ds(0x84,shi);
}
}
}
}
//DS1302
void write_ds(uchar add,uchar date)
{
uchar num;
RST=0;//復位
delay(1);
SCK=0;
delay(1);
RST=1;//關閉復位，開始傳輸
delay(1);
for(num=0;num<8;num++)
{
IO=add&0x01;//地址從低位開始傳送
add>>=1;
//date=date<<1;
//IO=CY;
SCK=1;
delay(1);
SCK=0;
delay(1);
}
for(num=0;num<8;num++)
{
IO=date&0x01;//數據從低位開始傳送
date>>=1;
//date=date<<1;
//IO=CY;
SCK=1;
delay(1);
SCK=0;
delay(1);
}
RST=0;//傳輸結束，復位
delay(5);
}
uchar read_ds(uchar add)
{
uchar num,temp,date;
RST=0;//復位
delay(1);
SCK=0;
delay(1);
RST=1;
delay(1);
for(num=0;num<8;num++)//先寫入地址
{
IO=add&0x01;//數據從低位開始傳送
add>>=1;
//date=date<<1;
//IO=CY;
SCK=1;
delay(1);
SCK=0;
delay(1);
}
delay(2);
for(num=0;num<8;num++)
{
temp=IO;
date=(date>>1)|(temp<<7);
SCK=1;
delay(1);
SCK=0;
delay(1);
}
RST=0;
delay(1);
SCK=1;
delay(1);
IO=0;
delay(1);
IO=1;
delay(1);
return date;
}
//LCD初始更新為系統時間
void init_ds()
{
miao=read_ds(0x81);
display(10,miao);
fen=read_ds(0x83);
display(7,fen);
shi=read_ds(0x85);
display(4,shi);
ri=read_ds(0x87);
display1(9,ri);
yue=read_ds(0x89);
display1(6,yue);
//xingqi=read_ds(0x8B);
//display(12,table2[]);
nian=read_ds(0x8D);
display1(3,nian);
}
void set_time()
{
write_ds(0x80,0x10);//設置初始時間秒；
write_ds(0x82,0x10);//設置初始時間分；
write_ds(0x84,0x14);//設置初始時間時；
write_ds(0x86,0x22);//設置初始時間日；
write_ds(0x88,0x03);//設置初始時間月；
write_ds(0x8a,0x03);//設置初始時間星期；
write_ds(0x8c,0x15);//設置初始時間年；
}
void main()
{
flag=0;
write_ds(0x8e,0x00);
init_lcd();
while(1)
{
keyscan();
if(flag==0){init_ds();}
}
}

復制代碼

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