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時鐘可以顯示掉秒
#include"reg52.h"
#define uint unsigned int
#define uchar unsigned char
uchar a,miao,fen,shi,day,week,month,year,key1n,flag,temp;
#define yi 0x80
#define er 0x80+0x40
sbit rs=P2^0;//RS
sbit en=P2^2;//E
sbit rw=P2^1;//RW
sbit led=P2^6;
sbit IO=P2^5;//時鐘
sbit RST=P2^3;//時鐘
sbit SCLK=P2^4;//時鐘
sbit ACC0=ACC^0;//累加器
sbit ACC7=ACC^7;//累加器
sbit key1=P3^2;//設(shè)置
sbit key2=P3^3;//加
sbit key3=P3^4;//減
sbit buzzer=P3^5;//喇叭
uchar code tab1[]={"20 - - "};//年月日1
uchar code tab2[]={" : : "};
void delay(uint xms)
{
uint x,y;
for (x=xms;x>0;x--)
for (y=110;y>0;y--);
}
void write_1602com(uchar com) //1603液晶寫入指令函數(shù)***
{
rs=0;//數(shù)據(jù)/指令選擇置為指令
rw=0;//讀寫選擇置為寫
en=0;
P0=com;//送入指令
delay(1);
en=1;
delay(1);
en=0;
}
void write_1602dat(uchar dat)//***液晶寫入數(shù)據(jù)函數(shù)***
{
rs=1;//數(shù)據(jù)/指令選擇置為數(shù)據(jù)
rw=0;//讀寫選擇置為寫
en=0;
P0=dat;//送入數(shù)據(jù)
delay(1);
en=1;
delay(1);
en=0;
}
void lcd_clr()//***液晶初始化函數(shù)***
{
write_1602com(0x38);//設(shè)置16*2顯示，5*7點陣，8位數(shù)據(jù)接口
write_1602com(0x0c);//設(shè)置LCD顯示開，光標(biāo)顯示關(guān)。
write_1602com(0x06);//寫一個數(shù)據(jù)后地址加1
write_1602com(0x01);//顯示清屏
write_1602com(yi+1);//年月日在第一行
for(a=0;a<14;a++)
{
write_1602dat(tab1[a]);
delay(3);
}
write_1602com(er+2);
for(a=0;a<8;a++)
{
write_1602dat(tab2[a]);
delay(3);
}
}
void write_byte(uchar dat) //DS1302有關(guān)子函數(shù) 寫一個字節(jié)8byte
{
ACC=dat;RST=1;
for(a=8;a>0;a--)
{
IO=ACC0;
SCLK=0;
SCLK=1;
ACC=ACC>>1;
}
}
uchar read_byte() //讀一個字節(jié)
{
RST=1;
for(a=8;a>0;a--)
{
ACC7=IO;
SCLK=1;
SCLK=0;
ACC=ACC>>1;
}
return(ACC);
}
void write_1302(uchar add,uchar dat)//向1302芯片寫數(shù)據(jù)，指定寫入地址，數(shù)據(jù)
{
RST=0;
SCLK=0;
RST=1;
write_byte(add);
write_byte(dat);
SCLK=1;
RST=0;
}
uchar read_1302(uchar add)//從1302讀數(shù)據(jù)函數(shù)，指定讀取數(shù)據(jù)來源地址
{
uchar temp;
RST=0;
SCLK=0;
RST=1;
write_byte(add);
temp=read_byte();
SCLK=1;
RST=0;
return(temp);
}
uchar BCD_Decimal(uchar bcd)//BCD碼轉(zhuǎn)十進(jìn)制函數(shù)，輸入BCD,返回十進(jìn)制
{
uchar Decimal;
Decimal=bcd>>4; //bcd碼右移四位高四位（十位）—轉(zhuǎn)到——低四位（個位）
return(Decimal=Decimal*10+(bcd&=0x0F));//bcd=bcd&0x0f保留bcd低四位其他位清零
}
void ds1302_clr()//1302芯片初始化函數(shù)（2008-6-30,10:00，week1）
{
RST=0;SCLK=0;
write_1302(0x8e,0x00);// 允許寫，禁止寫保護(hù)
write_1302(0x80,0x00);// 秒寫入秒寄存器0x80,寫入初始秒數(shù)據(jù)00
write_1302(0x82,0x00);// 分寫入分寄存器0x82,寫入初始分?jǐn)?shù)據(jù)00
write_1302(0x84,0x10);// 時寫入時寄存器0x84,寫入初始時數(shù)據(jù)10
write_1302(0x8a,0x05);// 周寫入周寄存器0x8a,寫入初始時數(shù)據(jù)1
write_1302(0x86,0x12);// 日寫入日寄存器0x86,寫入初始時數(shù)據(jù)30
write_1302(0x88,0x0B);// 月寫入時寄存器0x88,寫入初始時數(shù)據(jù)06
write_1302(0x8c,0x10);// 年寫入時寄存器0x8c,寫入初始時數(shù)據(jù)16
write_1302(0x8e,0x80);// 打開寫保護(hù)
}
void write_sfm(uchar add,uchar dat)//時 分 秒 可能為兩位數(shù)
{
uchar gw,sw;
gw=dat%10;//取得個位數(shù)字
sw=dat/10;//區(qū)的十位數(shù)字
write_1602com(er+add);//顯示行數(shù)
write_1602dat(0x30+sw);
write_1602dat(0x30+gw);
}
void write_nyr(uchar add,uchar dat)//年 月 日
{
uchar gw,sw;
gw=dat%10;
sw=dat/10;
write_1602com(yi+add); // 設(shè)定顯示位置為第一個位置+add
write_1602dat(0x30+sw);//數(shù)字+30得到該數(shù)字的lcd1602顯示碼
write_1602dat(0x30+gw);//同上
}
void write_week(uchar week)//寫星期函數(shù)
{
write_1602com(yi+12);//星期字符的顯示位置
switch(week)
{
case 1:write_1602dat('M');//星期數(shù)為1時，顯示
write_1602dat('O');
write_1602dat('N');
break;
case 2:write_1602dat('T');
write_1602dat('U');
write_1602dat('E');
break;
case 3:write_1602dat('W');
write_1602dat('E');
write_1602dat('D');
break;
case 4:write_1602dat('T');
write_1602dat('H');
write_1602dat('U');
break;
case 5:write_1602dat('F');
write_1602dat('R');
write_1602dat('I');
break;
case 6:write_1602dat('S');
write_1602dat('T');
write_1602dat('A');
break;
case 7:write_1602dat('S');
write_1602dat('U');
write_1602dat('N');
break;
}
}
void timealarm()
{
if(shi>7)//大于7點才啟動報時
{
if(key1==1)//不按下設(shè)置按鍵時才有效
{
if(fen==0&&miao<30)
{
buzzer=0;//啟動蜂鳴器
}
else buzzer=1;
}
}
}
void keyscan()//鍵盤掃描有關(guān)函數(shù)
{
if(key1==0)//key1為功能鍵（設(shè)置鍵）
{
delay(9); //延時消抖動
if(key1==0)//判斷按鍵是否按下，按下為0
{
buzzer=0;
delay(20);
buzzer=1;
while(!key1);//按鍵釋放
key1n++;
if(key1n==9)
key1n=1;
switch(key1n)
{
case 1:TR0=0;//關(guān)閉定時器
TR1=0;
write_1602com(er+0x09);//設(shè)置按鍵按動一次，秒位置顯示光標(biāo)
write_1602com(0x0f); //全屏顯示 光標(biāo)顯示 顯示光標(biāo)閃爍
/*temp=(miao)/10*16+(miao)%10;//
write_1302(0x8e,0x00);
write_1302(0x80,0x80|temp);//miao
write_1302(0x8e,0x80);*/
break;
case 2:write_1602com(er+0x06); //按兩次 分位置顯示光標(biāo)(可按key2 或 key3進(jìn)行上調(diào)或下調(diào))
write_1602com(0x0f);
break;
case 3:write_1602com(er+0x03);//按三次 時
write_1602com(0x0f);
break;
case 4:write_1602com(yi+0x0e);//按四次week
write_1602com(0x0f);
break;
case 5:write_1602com(yi+0x0a);//按五次日
write_1602com(0x0f);
break;
case 6:write_1602com(yi+0x07);//按六次月
write_1602com(0x0f);
break;
case 7:write_1602com(yi+0x04);//按七次年
write_1602com(0x0f);
break;
case 8:write_1602com(0x0c);
TR0=1;
temp=(miao)/10*16+(miao)%10;
write_1302(0x8e,0x00);
write_1302(0x80,0x00|temp);//miao數(shù)據(jù)寫入1302
write_1302(0x8e,0x80);
break;
}
}
}
if(key1n!=0)
{
if(key2==0)
{
delay(10);
if(key2==0);
{
buzzer=0;
delay(20);
buzzer=1;
while(!key2);
switch(key1n)
{
case 1:miao++;//設(shè)置鍵按動一次，調(diào)秒
if(miao==60)
miao=0; //miao
write_sfm(0x08,miao);
temp=(miao)/10*16+(miao)%10;
write_1302(0x8e,0x00);
write_1302(0x80,temp);
write_1302(0x8e,0x80);
write_1602com(er+0x09);//lcd秒位置顯示光標(biāo)
break;
case 2:fen++;
if(fen==60)
fen=0;
write_sfm(0x05,fen);//fen
temp=(fen)/10*16+(fen)%10;
write_1302(0x8e,0x00);
write_1302(0x82,temp);
write_1302(0x8e,0x80);
write_1602com(er+6);
break;
case 3:shi++;
if(shi==24)
shi=0;
write_sfm(0x02,shi);
temp=(shi)/10*16+(shi)%10;
write_1302(0x8e,0x00);
write_1302(0x84,temp);
write_1302(0x8e,0x80);
write_1602com(er+3);
break;
case 4:week++;
if(week==8)
week=1;
write_1602com(yi+0x0c);
write_week(week);
temp=(week)/10*16+(week)%10;
write_1302(0x8e,0x00);
write_1302(0x8a,temp);
write_1302(0x8e,0x80);
write_1602com(yi+0x0e);
break;
case 5:day++;
if(month==1||month==3||month==5||month==7||month==8||month==10||month==12)
{if(day==32)
day=1;}
else if(month==4||month==6||month==9||month==11)
{
if(day==31)
day=1;
}
else if(month==2)
{
if(year%4==0||year%100==0&&year%400==0)
{
if(day==30)
day=1;
}
else if(day==29)
day=1;
}
write_nyr(0x09,day);
temp=(day)/10*16+(day)%10;
write_1302(0x8e,0x00);
write_1302(0x86,temp);
write_1302(0x8e,0x80);
write_1602com(yi+10);
break;
case 6:month++;
if(month==13)
month=1;
write_nyr(0x06,month);
temp=(month)/10*16+(month)%10;
write_1302(0x8e,0x00);
write_1302(0x88,temp);
write_1302(0x8e,0x80);
write_1602com(yi+7);
break;
case 7:year++;
if(year==100)
year=0;
write_nyr(3,year);
temp=(year)/10*16+(year)%10;
write_1302(0x8e,0x00);
write_1302(0x8c,temp);
write_1302(0x8e,0x80);
write_1602com(yi+4);
break;
}
}
}
if(key3==0)
{
delay(10);
if(key3==0)
{
buzzer=0;
delay(20);
buzzer=1;
while(!key3);
switch(key1n)
{
case 1:miao--;//設(shè)置鍵按動一次，調(diào)秒
if(miao==-1)
miao=59; //miao
write_sfm(0x08,miao);
temp=(miao)/10*16+(miao)%10;
write_1302(0x8e,0x00);
write_1302(0x80,temp);
write_1302(0x8e,0x80);
write_1602com(er+0x09);//lcd秒位置顯示光標(biāo)
break;
case 2:fen--;
if(fen==-1)
fen=59;
write_sfm(0x05,fen);//fen
temp=(fen)/10*16+(fen)%10;
write_1302(0x8e,0x00);
write_1302(0x82,temp);
write_1302(0x8e,0x80);
write_1602com(er+6);
break;
case 3:shi--;
if(shi==-1)
shi=23;
write_sfm(0x02,shi);
temp=(shi)/10*16+(shi)%10;
write_1302(0x8e,0x00);
write_1302(0x84,temp);
write_1302(0x8e,0x80);
write_1602com(er+3);
break;
case 4:week--;
if(week==0)
week=7;
write_1602com(yi+0x0c);
write_week(week);
temp=(week)/10*16+week%10;
write_1302(0x8e,0x00);
write_1302(0x8a,temp);
write_1302(0x8e,0x80);
write_1602com(yi+0x0e);
break;
case 5:day--;
if(month==1||month==3||month==5||month==7||month==8||month==10||month==12)
{if(day==-1)
day=31;}
else if(month==4||month==6||month==9||month==11)
{
if(day==-1)
day=30;
}
else if(month==2)
{
if(year%4==0||year%100==0&&year%400==0)
{
if(day==-1)
day=29;
}
else if(day==-1)
day=28;
}
write_nyr(0x09,day);
temp=(day)/10*16+(day)%10;
write_1302(0x8e,0x00);
write_1302(0x86,temp);
write_1302(0x8e,0x80);
write_1602com(yi+10);
break;
case 6:month--;
if(month==0)
month=12;
write_nyr(6,month);
temp=(month)/10*16+(month)%10;
write_1302(0x8e,0x00);
write_1302(0x88,temp);
write_1302(0x8e,0x80);
write_1602com(yi+7);
break;
case 7:year--;
if(year==-1)
year=99;
write_nyr(3,year);
temp=(year)/10*16+(year)%10;
write_1302(0x8e,0x00);
write_1302(0x8c,temp);
write_1302(0x8e,0x80);
write_1602com(yi+4);
break;
}
}
}
}
}
void init()
{
TMOD=0x11;//指定定時/計數(shù)的工作方式
TH0=0;//定時器T0的高四位=0
TL0=0;//定時器T0的低四位=0
EA=1;// 系統(tǒng)允許有開放的中斷
ET0=1;//允許T0中斷
TR0=1;//開啟中斷，啟動定時器
}
//**************主程序*************//
void main()
{
lcd_clr();
ds1302_clr();
init();
led=0;
buzzer=0;
delay(80);
buzzer=1;
while(1)
{
keyscan();//調(diào)用鍵盤掃描子函數(shù)
}
}
void timer0()interrupt 1
{
miao=BCD_Decimal(read_1302(0x81));
fen=BCD_Decimal(read_1302(0x83));
shi=BCD_Decimal(read_1302(0x85));
day=BCD_Decimal(read_1302(0x87));
month=BCD_Decimal(read_1302(0x89));
year=BCD_Decimal(read_1302(0x8d));
week=BCD_Decimal(read_1302(0x8b));
write_sfm(8,miao);
write_sfm(5,fen);
write_sfm(2,shi);
write_nyr(9,day);
write_nyr(6,month);
write_nyr(3,year);
write_week(week);
timealarm();
}
字符手冊.pdf
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51hei1302.zip
(119.95 KB, 下載次數(shù): 17)
2020-2-27 13:57 上傳
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