基于51單片機的無DS1302 LCD1602電子時鐘鬧鐘源碼

ID:305386 · 發表于 2018-8-1 15:37

51單片機的電子時鐘，鬧鐘。無DS1302僅僅用定時器，LCD1602做成的鬧鐘，星期跟日期可以分開寫的，但無潤平年之分和無月份天數區分。

單片機源程序如下:

#include"reg52.h"
typedef unsigned char u8;
typedef unsigned int u16;
#define datapins P0
sbit E=P2^7;
sbit RW=P2^5;
sbit RS=P2^6;
sbit beep=P1^5;
sbit k1=P1^4; //時鐘功能鍵
sbit k2=P1^3; //增大鍵
sbit k3=P1^2; //減小鍵
sbit k4=P1^1; //鬧鐘功能鍵
u8 k1num,knnum,shi,fen,miao,nian,yue,ri,nshi,nfen,nmiao,nnian,nyue,nri,i,count,we,nwe;
void delay(u16 c); //延時函數誤差 0us
void LcdWriteCom(u8 com); //LCD1602寫入8位命令子函數
void LcdWriteData(u8 dat); //LCD1602寫入8位數據子函數
void init(); //初始化程序
void keyscan(); //按鍵程序
void di(); //發聲函數
void write_sfm(u8 add,u8 date); //時間調節
void write_sfm1(u8 add,u8 date); //時間調節
void write_nyr(u8 add,u8 date); //時間調節
void write_nyr1(u8 add,u8 date); //時間調節
void lcd_init(); //LCD1602初始化函數
void delay(u16 c) //延時誤差 0us
{
u16 a,b;
for (;c>0;c--)
{
for(b=199;b>0;b--)
{
for(a=1;a>0;a--);
}
}
}
void lcd_init() //lcd初始化函數
{
E=0;
RW=0;
RS=0;
LcdWriteCom(0x38); //開顯示
LcdWriteCom(0x0c); //開顯示不顯示光標
LcdWriteCom(0x06); //寫一個指針加1
LcdWriteCom(0x80); //設置數據指針起點
}
void di() //發出di聲
{
beep=0;
delay(100);
beep=1;
}
void LcdWriteCom(u8 com) //寫入命令
{
datapins=com; //放入命令
delay(1); //等待數據穩定
E=1; //寫入時序
delay(5); //保持時間
E=0;
}
void LcdWriteData(u8 dat) //寫入數據
{
E=0; //使能清零
RS=1; //選擇輸入數據
RW=0; //選擇寫入
datapins=dat; //寫入數據
delay(1);
E = 1; //寫入時序
delay(5); //保持時間
E = 0;
}
void write_sfm(u8 add,u8 date) //時間調節
{
u16 sh,ge;
sh=date/10;
ge=date%10;
lcd_init();
LcdWriteCom(0x80+0x40+add);
LcdWriteData(0x30+sh);
LcdWriteData(0x30+ge);
}
void write_sfm1(u8 add,u8 date) //定時器用時間調節
{
u16 sh,ge;
sh=date/10;
ge=date%10;
if(knnum==0)
{
lcd_init();
LcdWriteCom(0x80+0x40+add);
LcdWriteData(0x30+sh);
LcdWriteData(0x30+ge);
}
}
void write_nyr(u8 add,u8 date) //時間調節
{
u16 sh,ge;
sh=date/10;
ge=date%10;
lcd_init();
LcdWriteCom(0x80+add);
LcdWriteData(0x30+sh);
LcdWriteData(0x30+ge);
}
void write_nyr1(u8 add,u8 date) //定時器用時間調節
{
u16 sh,ge;
sh=date/10;
ge=date%10;
if(knnum==0)
{
lcd_init();
LcdWriteCom(0x80+add);
LcdWriteData(0x30+sh);
LcdWriteData(0x30+ge);
}
}
void write_week(u8 we)
{
LcdWriteCom(0x80+13);
switch(we)
{
case 1:LcdWriteData('M');delay(5);
LcdWriteData('O');delay(5);
LcdWriteData('N');
break;
case 2:LcdWriteData('T');delay(5);
LcdWriteData('U');delay(5);
LcdWriteData('E');
break;
case 3:LcdWriteData('W');delay(5);
LcdWriteData('E');delay(5);
LcdWriteData('D');
break;
case 4:LcdWriteData('T');delay(5);
LcdWriteData('H');delay(5);
LcdWriteData('U');
break;
case 5:LcdWriteData('F');delay(5);
LcdWriteData('R');delay(5);
LcdWriteData('T');
break;
case 6:LcdWriteData('S');delay(5);
LcdWriteData('A');delay(5);
LcdWriteData('T');
break;
case 7:LcdWriteData('S');delay(5);
LcdWriteData('U');delay(5);
LcdWriteData('N');
break;
}
}
void write_week1(u8 nwe)
{
LcdWriteCom(0x80+13);
switch(nwe)
{
case 1:LcdWriteData('M');delay(5);
LcdWriteData('O');delay(5);
LcdWriteData('N');
break;
case 2:LcdWriteData('T');delay(5);
LcdWriteData('U');delay(5);
LcdWriteData('E');
break;
case 3:LcdWriteData('W');delay(5);
LcdWriteData('E');delay(5);
LcdWriteData('D');
break;
case 4:LcdWriteData('T');delay(5);
LcdWriteData('H');delay(5);
LcdWriteData('U');
break;
case 5:LcdWriteData('F');delay(5);
LcdWriteData('R');delay(5);
LcdWriteData('T');
break;
case 6:LcdWriteData('S');delay(5);
LcdWriteData('A');delay(5);
LcdWriteData('T');
break;
case 7:LcdWriteData('S');delay(5);
LcdWriteData('U');delay(5);
LcdWriteData('N');
break;
}
}
void init() //初始化程序
{
E=0;
RW=0;
RS=0;
shi=23;
fen=59;
miao=55;
nian=18;
yue=7;
ri=30;
we=1;
nwe=2;
k1num=0; //時鐘k1計數
knnum=0; //鬧鐘k4計數
nshi=0;
nfen=0;
nmiao=5;
nnian=18;
nyue=8;
nri=1;
LcdWriteCom(0x38); //開顯示
LcdWriteCom(0x0c); //開顯示不顯示光標
LcdWriteCom(0x06); //寫一個指針加1
LcdWriteCom(0x01); //清屏
LcdWriteCom(0x80); //設置數據指針起點
delay(5);
RW=0;
RS=0;
E=0;
LcdWriteCom(0x38); //開顯示
LcdWriteCom(0x0c); //寫一個指針加1
LcdWriteCom(0x80+0x40); //開顯示不顯示光標
LcdWriteCom(0x06); //顯示時鐘標志
LcdWriteData('S');
LcdWriteData('H');
LcdWriteData('I');
RW=0;
RS=0;
E=0;
LcdWriteCom(0x80+0x40+9);
LcdWriteData(':');
RW=0;
RS=0;
E=0;
LcdWriteCom(0x80+0x40+6);
LcdWriteData(':');
RW=0;
RS=0;
E=0;
LcdWriteCom(0x80+2);
LcdWriteData('2');
LcdWriteData('0');
RW=0;
RS=0;
E=0;
LcdWriteCom(0x80+6);
LcdWriteData('-');
RW=0;
RS=0;
E=0;
LcdWriteCom(0x80+9);
LcdWriteData('-');
RW=0;
RS=0;
E=0;
LcdWriteCom(0x80+13);
write_week(we);
write_sfm(4,shi);
write_sfm(7,fen);
write_sfm(10,miao);
write_nyr(4,nian);
write_nyr(7,yue);
write_nyr(10,ri);
write_week(we);
TMOD|=0x01; //設置定時器0工作模式1
TH0=(65536-50000)/256; //定時器初裝
TL0=(65536-50000)%256;
EA=1; //打開總中斷
ET0=1; //打開定時器0中斷
TR0=1; //啟動定時器0
}
void keyscan() //按鍵調節
{
if(k4==0&&k1num==0) //進入鬧鐘調節
{
delay(5);
if(k4==0)
{
knnum++;
while(!k4); //檢查按鍵松開
di();
if(knnum==1)
{
E=0;
RS=0;
RW=0;
LcdWriteCom(0x80+0x40); //顯示鬧鐘標志
LcdWriteData('N');
LcdWriteData('A');
LcdWriteData('O');
E=0;
RS=0;
RW=0;
LcdWriteCom(0x80+0x40+6); //在時分之間顯示":"
LcdWriteData(':');
delay(5);
E=0;
RS=0;
RW=0;
LcdWriteCom(0x80+0x40+9); //在分秒之間顯示":"
LcdWriteData(':');
delay(5);
write_sfm(4,nshi);
write_sfm(7,nfen);
write_sfm(10,nmiao);
write_nyr(4,nian);
write_nyr(7,yue);
write_nyr(10,ri);
write_week(we);
E=0;
RS=0;
RW=0;
LcdWriteCom(0x80+0x40+4); //光標指向時
LcdWriteCom(0x0f); //開啟光標
}
if(knnum==2)
{
LcdWriteCom(0x80+0x40+7); //光標移動到fen
}
if(knnum==3)
{
LcdWriteCom(0x80+0x40+10) ; //光標移動到miao
}
if(knnum==4)
{
LcdWriteCom(0x80+4) ; //光標移動到nian
}
if(knnum==5)
{
LcdWriteCom(0x80+7) ; //光標移動到yue
}
if(knnum==6)
{
LcdWriteCom(0x80+10) ; //光標移動到ri
}
if(knnum==7)
{
LcdWriteCom(0x80+13); //光標移動到week
}
if(knnum==8)
{
knnum=0; //按鍵次數清零
LcdWriteCom(0x0c); //取消光標閃爍
TR0=0;
E=0;
RS=0;
RW=0;
write_sfm(4,shi);
write_sfm(7,fen);
write_sfm(10,miao);
write_nyr(4,nian);
write_nyr(7,yue);
write_nyr(10,ri);
write_week(we);
TR0=1;
E=0;
RS=0;
RW=0;
LcdWriteCom(0x80+0x40); //顯示時鐘標志
LcdWriteData('S');
LcdWriteData('H');
LcdWriteData('I');
}
}
}
/**********************鬧鐘增大**********************************/
if(knnum!=0)
{
if(k2==0)
{
delay(5);
if(k2==0)
{
while(!k2); //確認按鍵釋放
di();
if(knnum==1)
{
nshi++; //shi加1
if(nshi==24) //shi滿24清零
nshi=0;
write_sfm(4,nshi);
E=0;
RW=0;
RS=0;
LcdWriteCom(0x0f);
LcdWriteCom(0x80+0x40+4); //顯示重新回到調節處
}
if(knnum==2)
{
nfen++;
if(nfen==60)
nfen=0;
write_sfm(7,nfen);
RW=0;
RS=0;
E=0;
LcdWriteCom(0x0f);
LcdWriteCom(0x80+0x40+7); //顯示重新回到調節處
}
if(knnum==3)
{
nmiao++;
if(nmiao==60)
nmiao=0;
write_sfm(10,nmiao);
RW=0;
RS=0;
E=0;
LcdWriteCom(0x0f);
LcdWriteCom(0x80+0x40+10); //顯示重新回到調節處
}
if(knnum==4)
{
nnian++; //nian減1
if(nnian==21) //nian小于零回到最大
nnian=10;
write_nyr(4,nnian);
RW=0;
RS=0;
E=0;
LcdWriteCom(0x0f);
LcdWriteCom(0x80+4); //顯示重新回到調節處
}
if(knnum==5)
{
nyue++;
if(nyue==13)
nyue=1;
write_nyr(7,nyue);
RW=0;
RS=0;
E=0;
LcdWriteCom(0x0f);
LcdWriteCom(0x80+7); //顯示重新回到調節處
}
if(knnum==6)
{
nri++;
if(nri==31)
nri=1;
write_nyr(10,nri);
RW=0;
RS=0;
E=0;
LcdWriteCom(0x0f);
LcdWriteCom(0x80+10); //顯示重新回到調節處
}
if(knnum==7)
{
nwe++;
if(nwe==8)
nwe=1;
write_week1(nwe);
RW=0;
RS=0;
E=0;
LcdWriteCom(0x0f);
LcdWriteCom(0x80+13); //顯示重新回到調節處
}
}
}
/************************鬧鐘減小*********************************/
if(k3==0)
{
delay(5);
if(k3==0)
{
while(!k3); //確認按鍵釋放
di();
if(knnum==1)
{
nshi--; //nshi減1
if(nshi==-1) //nshi等于-1回到最大
nshi=23;
write_sfm(4,nshi);
RW=0;
RS=0;
E=0;
LcdWriteCom(0x0f);
LcdWriteCom(0x80+0x40+4); //顯示重新回到調節處
}
if(knnum==2)
{
nfen--; //nfen減1
if(nfen==-1) //nfen等于-1回到最大
nfen=59;
write_sfm(7,nfen);
RW=0;
RS=0;
E=0;
LcdWriteCom(0x0f);
LcdWriteCom(0x80+0x40+7); //顯示重新回到調節處
}
if(knnum==3)
{
nmiao--; //nmiao減1
if(nmiao==-1) //nmiao等于-1回到最大
nmiao=59;
write_sfm(10,nmiao);
RW=0;
RS=0;
E=0;
LcdWriteCom(0x0f);
LcdWriteCom(0x80+0x40+10); //顯示重新回到調節處
}
if(knnum==4)
{
nnian--; //nian減1
if(nnian==9) //nian小于零回到最大
nnian=20;
write_nyr(4,nnian);
RW=0;
RS=0;
E=0;
LcdWriteCom(0x0f);
LcdWriteCom(0x80+4); //顯示重新回到調節處
}
if(knnum==5)
{
nyue--;
if(nyue==0)
nyue=12;
write_nyr(7,nyue);
RW=0;
RS=0;
E=0;
LcdWriteCom(0x0f);
LcdWriteCom(0x80+7); //顯示重新回到調節處
}
if(knnum==6)
{
nri--;
if(nri==0)
nri=30;
write_nyr(10,nri);
RW=0;
RS=0;
E=0;
LcdWriteCom(0x0f);
LcdWriteCom(0x80+10); //顯示重新回到調節處
}
if(knnum==7)
{
nwe--;
if(nwe==0)
nwe=7;
write_week1(nwe);
RW=0;
RS=0;
E=0;
LcdWriteCom(0x0f);
LcdWriteCom(0x80+13); //顯示重新回到調節處
}
}
}
}
/****************************************************************/
if(k1==0&&knnum==0) //進入時鐘調節
{
delay(5);
if(k1==0)
{
k1num++;
while(!k1);
di();
if(k1num==1)
{
TR0=0; //關閉定時器
E=0;
RW=0;
RS=0;
LcdWriteCom(0x80+0x40+4); //光標移動到shi
LcdWriteCom(0x0f); //光標閃爍
}
if(k1num==2)
{
LcdWriteCom(0x80+0x40+7); //光標移動到fen
}
if(k1num==3)
{
LcdWriteCom(0x80+0x40+10); //光標移動到miao
}
if(k1num==4)
{
LcdWriteCom(0x80+4) ; //光標移動到nian
}
if(k1num==5)
{
LcdWriteCom(0x80+7) ; //光標移動到yue
}
if(k1num==6)
{
LcdWriteCom(0x80+10) ; //光標移動到ri
}
if(k1num==7)
{
LcdWriteCom(0x80+13); //光標移動到week
}
if(k1num==8)
{
k1num=0; //按鍵次數清零
LcdWriteCom(0x0c); //取消光標閃爍
TR0=1; //計時啟動
}
}
}
/**********************增大***************************************/
if(k1num!=0)
{
if(k2==0)
{
delay(5);
if(k2==0)
{
while(!k2); //確認按鍵釋放
di();
if(k1num==1)
{
shi++; //shi加1
if(shi==24) //shi滿24清零
shi=0;
write_sfm(4,shi);
RW=0;
RS=0;
E=0;
LcdWriteCom(0x0f);
LcdWriteCom(0x80+0x40+4); //顯示重新回到調節處
}
if(k1num==2)
{
fen++;
if(fen==60)
fen=0;
write_sfm(7,fen);
RW=0;
RS=0;
E=0;
LcdWriteCom(0x0f);
LcdWriteCom(0x80+0x40+7); //顯示重新回到調節處
}
if(k1num==3)
{
miao++;
if(miao==60)
miao=0;
write_sfm(10,miao);
RW=0;
RS=0;
E=0;
LcdWriteCom(0x0f);
LcdWriteCom(0x80+0x40+10); //顯示重新回到調節處
}
if(k1num==4)
{
nian++; //nian減1
if(nian==21) //nian小于零回到最大
nian=10;
write_nyr(4,nian);
RW=0;
RS=0;
E=0;
LcdWriteCom(0x0f);
LcdWriteCom(0x80+4); //顯示重新回到調節處
}
if(k1num==5)
{
yue++;
if(yue==13)
yue=1;
write_nyr(7,yue);
RW=0;
RS=0;
E=0;
LcdWriteCom(0x0f);
LcdWriteCom(0x80+7); //顯示重新回到調節處
}
if(k1num==6)
{
ri++;
if (ri==31)
ri=1;
write_nyr(10,ri);
RW=0;
RS=0;
E=0;
LcdWriteCom(0x0f);
LcdWriteCom(0x80+10); //顯示重新回到調節處
}
if(k1num==7)
{
we++;
if(we==8)
we=1;
write_week(we);
RW=0;
RS=0;
E=0;
LcdWriteCom(0x0f);
LcdWriteCom(0x80+13); //顯示重新回到調節處
}
}
}
/************************減小*********************************/
if(k3==0)
{
delay(5);
if(k3==0)
{
while(!k3); //確認按鍵釋放
di();
if(k1num==1)
{
shi--; //shi減1
if(shi==-1) //shi小于零回到最大
shi=23;
write_sfm(4,shi);
RW=0;
RS=0;
E=0;
LcdWriteCom(0x0f);
LcdWriteCom(0x80+0x40+4); //顯示重新回到調節處
}
if(k1num==2)
{
fen--;
if(fen==-1)
fen=59;
write_sfm(7,fen);
RW=0;
RS=0;
E=0;
LcdWriteCom(0x0f);
LcdWriteCom(0x80+0x40+7); //顯示重新回到調節處
}
if(k1num==3)
{
miao--;
if (miao==-1)
miao=59;
write_sfm(10,miao);
RW=0;
RS=0;
E=0;
LcdWriteCom(0x0f);
LcdWriteCom(0x80+0x40+10); //顯示重新回到調節處
}
if(k1num==4)
{
nian--; //nian減1
if(nian==9) //nian小于零回到最大
nian=20;
write_nyr(4,nian);
RW=0;
RS=0;
E=0;
LcdWriteCom(0x0f);
LcdWriteCom(0x80+4); //顯示重新回到調節處
}
if(k1num==5)
{
yue--;
if(yue==0)
yue=12;
write_nyr(7,yue);
RW=0;
RS=0;
E=0;
LcdWriteCom(0x0f);
LcdWriteCom(0x80+7); //顯示重新回到調節處
}
if(k1num==6)
{
ri--;
if (ri==0)
ri=30;
……………………
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基于51單片機的無DS1302 LCD1602電子時鐘鬧鐘源碼

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