單片機數字鍾設計程序

⑴ 基於單片機的數字時鍾設計方案

數字鍾〔★〕這里用了兩種編寫方法（即匯編語言與C語言）
（1． 開機時，顯示12：00：00的時間開始計時；
（2． P0.0/AD0控制「秒」的調整，每按一次加1秒；
（3． P0.1/AD1控制「分」的調整，每按一次加1分；
（4． P0.2/AD2控制「時」的調整，每按一次加1個小時；
2． 電路原理圖

3． 系統板上硬體連線
（1． 把「單片機系統」區域中的P1.0－P1.7埠用8芯排線連接到「動態數碼顯示」區域中的A－H埠上；
（2． 把「單片機系統：區域中的P3.0－P3.7埠用8芯排線連接到「動態數碼顯示」區域中的S1－S8埠上；
（3． 把「單片機系統」區域中的P0.0/AD0、P0.1/AD1、P0.2/AD2埠分別用導線連接到「獨立式鍵盤」區域中的SP3、SP2、SP1埠上；
4． 相關基本知識
（1． 動態數碼顯示的方法
（2． 獨立式按鍵識別過程
（3． 「時」，「分」，「秒」數據送出顯示處理方法
5． 程序框圖
6． 匯編源程序
SECOND EQU 30H
MINITE EQU 31H
HOUR EQU 32H
HOURK BIT P0.0
MINITEK BIT P0.1
SECONDK BIT P0.2
DISPBUF EQU 40H
DISPBIT EQU 48H
T2SCNTA EQU 49H
T2SCNTB EQU 4AH
TEMP EQU 4BH
ORG 00H
LJMP START
ORG 0BH
LJMP INT_T0
START: MOV SECOND,#00H
MOV MINITE,#00H
MOV HOUR,#12
MOV DISPBIT,#00H
MOV T2SCNTA,#00H
MOV T2SCNTB,#00H
MOV TEMP,#0FEH
LCALL DISP
MOV TMOD,#01H
MOV TH0,#(65536-2000) / 256
MOV TL0,#(65536-2000) MOD 256
SETB TR0
SETB ET0
SETB EA
WT: JB SECONDK,NK1
LCALL DELY10MS
JB SECONDK,NK1
INC SECOND
MOV A,SECOND
CJNE A,#60,NS60
MOV SECOND,#00H
NS60: LCALL DISP
JNB SECONDK,$
NK1: JB MINITEK,NK2
LCALL DELY10MS
JB MINITEK,NK2
INC MINITE
MOV A,MINITE
CJNE A,#60,NM60
MOV MINITE,#00H
NM60: LCALL DISP
JNB MINITEK,$
NK2: JB HOURK,NK3
LCALL DELY10MS
JB HOURK,NK3
INC HOUR
MOV A,HOUR
CJNE A,#24,NH24
MOV HOUR,#00H
NH24: LCALL DISP
JNB HOURK,$
NK3: LJMP WT
DELY10MS:
MOV R6,#10
D1: MOV R7,#248
DJNZ R7,$
DJNZ R6,D1
RET
DISP:
MOV A,#DISPBUF
ADD A,#8
DEC A
MOV R1,A
MOV A,HOUR
MOV B,#10
DIV AB
MOV @R1,A
DEC R1
MOV A,B
MOV @R1,A
DEC R1
MOV A,#10
MOV @R1,A
DEC R1
MOV A,MINITE
MOV B,#10
DIV AB
MOV @R1,A
DEC R1
MOV A,B
MOV @R1,A
DEC R1
MOV A,#10
MOV @R1,A
DEC R1
MOV A,SECOND
MOV B,#10
DIV AB
MOV @R1,A
DEC R1
MOV A,B
MOV @R1,A
DEC R1
RET
INT_T0:
MOV TH0,#(65536-2000) / 256
MOV TL0,#(65536-2000) MOD 256
MOV A,#DISPBUF
ADD A,DISPBIT
MOV R0,A
MOV A,@R0
MOV DPTR,#TABLE
MOVC A,@A+DPTR
MOV P1,A
MOV A,DISPBIT
MOV DPTR,#TAB
MOVC A,@A+DPTR
MOV P3,A
INC DISPBIT
MOV A,DISPBIT
CJNE A,#08H,KNA
MOV DISPBIT,#00H
KNA: INC T2SCNTA
MOV A,T2SCNTA
CJNE A,#100,DONE
MOV T2SCNTA,#00H
INC T2SCNTB
MOV A,T2SCNTB
CJNE A,#05H,DONE
MOV T2SCNTB,#00H
INC SECOND
MOV A,SECOND
CJNE A,#60,NEXT
MOV SECOND,#00H
INC MINITE
MOV A,MINITE
CJNE A,#60,NEXT
MOV MINITE,#00H
INC HOUR
MOV A,HOUR
CJNE A,#24,NEXT
MOV HOUR,#00H
NEXT: LCALL DISP
DONE: RETI
TABLE: DB 3FH,06H,5BH,4FH,66H,6DH,7DH,07H,7FH,6FH,40H
TAB: DB 0FEH,0FDH,0FBH,0F7H,0EFH,0DFH,0BFH,07FH
END

7． C語言源程序
#include <AT89X51.H>
unsigned char code dispcode[]={0x3f,0x06,0x5b,0x4f,
0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,
0x39,0x5e,0x79,0x71,0x00};
unsigned char dispbitcode[]={0xfe,0xfd,0xfb,0xf7,
0xef,0xdf,0xbf,0x7f};
unsigned char dispbuf[8]={0,0,16,0,0,16,0,0};
unsigned char dispbitcnt;
unsigned char second;
unsigned char minite;
unsigned char hour;
unsigned int tcnt;
unsigned char mstcnt;
unsigned char i,j;
void main(void)
{
TMOD=0x02;
TH0=0x06;
TL0=0x06;
TR0=1;
ET0=1;
EA=1;
while(1)
{
if(P0_0==0)
{
for(i=5;i>0;i--)
for(j=248;j>0;j--);
if(P0_0==0)
{
second++;
if(second==60)
{
second=0;
}
dispbuf[0]=second%10;
dispbuf[1]=second/10;
while(P0_0==0);
}
}
if(P0_1==0)
{
for(i=5;i>0;i--)
for(j=248;j>0;j--);
if(P0_1==0)
{
minite++;
if(minite==60)
{
minite=0;
}
dispbuf[3]=minite%10;
dispbuf[4]=minite/10;
while(P0_1==0);
}
}
if(P0_2==0)
{
for(i=5;i>0;i--)
for(j=248;j>0;j--);
if(P0_2==0)
{
hour++;
if(hour==24)
{
hour=0;
}
dispbuf[6]=hour%10;
dispbuf[7]=hour/10;
while(P0_2==0);
}
}
}
}
void t0(void) interrupt 1 using 0
{
mstcnt++;
if(mstcnt==8)
{
mstcnt=0;
P1=dispcode[dispbuf[dispbitcnt]];
P3=dispbitcode[dispbitcnt];
dispbitcnt++;
if(dispbitcnt==8)
{
dispbitcnt=0;
}
}
tcnt++;
if(tcnt==4000)
{
tcnt=0;
second++;
if(second==60)
{
second=0;
minite++;
if(minite==60)
{
minite=0;
hour++;
if(hour==24)
{
hour=0;
}
}
}
dispbuf[0]=second%10;
dispbuf[1]=second/10;
dispbuf[3]=minite%10;
dispbuf[4]=minite/10;
dispbuf[6]=hour%10;
dispbuf[7]=hour/10;
}

⑵ 急救！！！各位兄弟姐妹們誰懂單片機編程啊，幫幫我啊！用單片機編輯一個數字鍾的程序啊，要求如下：

給你一個我用液晶屏12864寫的程序，一個是功能鍵，按照順序按一下是第一位跳動，接下再按就是第二位，一次類推。第二個按鍵是控制加，第三個按鍵是控制減，你的數碼管和這個很類似，比這個還簡單，在這你也沒有要求數碼管是怎麼接的。你可以參考的。
#include<reg52.h>
#include<chushihua.h> //12864的初始化函數；
char gwnian,nian,yue,ri,xq,shi,fen,miao;
sbit DQ =P3^5; //定義DS18B20通信埠
sbit led_en_port = P2^5; /*發光二極體寄存器LE引腳*/
sbit sled_en_port = P3^6; /*數碼管寄存器LE引腳*/
sbit key1=P1^0;
sbit key2=P1^1;
sbit key3=P1^2;
uchar code mun_to_char[] = {"0123456789"}; /*數字轉換為ASCII字元碼*/
uchar table[]={"製作人："};
uchar table2[]={"2009年11月28日晚"};
uchar table1[]={"江向陽"};
uchar table31[]={"年"};
uchar table32[]={"月"};
uchar table33[]={"日"};
uchar table4[]={"星期"};
uchar table51[]={"時"};
uchar table52[]={"分"};
uchar table53[]={"秒"};
uchar table6[]={"當前溫度：20.3"};
//uchar table61[]={"??度"};
uchar xq1[]={"一"};
uchar xq2[]={"二"};
uchar xq3[]={"叄"};
uchar xq4[]={"四"};
uchar xq5[]={"五"};
uchar xq6[]={"六"};
uchar xq7[]={"日"};

/***************寫星期函數*******************/
write_xq(uchar z)
{
uchar num;
write_com(0x90+5);
switch(z)
{
case 1: for(num=0;num<2;num++)
{
write_date(xq1[num]);
delay(1);
}
break;
case 2: for(num=0;num<2;num++)
{
write_date(xq2[num]);
delay(1);
}
break;
case 3: for(num=0;num<2;num++)
{
write_date(xq3[num]);
delay(1);
}
break;
case 4: for(num=0;num<2;num++)
{
write_date(xq4[num]);
delay(1);
}
break;
case 5: for(num=0;num<2;num++)
{
write_date(xq5[num]);
delay(1);
}
break;
case 6: for(num=0;num<2;num++)
{
write_date(xq6[num]);
delay(1);
}
break;
case 7: for(num=0;num<2;num++)
{
write_date(xq7[num]);
delay(1);
}
break;
}
}

/*************寫年月日函數**************/
void write_nyr(uchar date,uchar add)
{
uchar shi,ge;
shi=date/10;
ge=date%10;
write_com(0x80+add);
write_date(0x30+shi);
write_date(0x30+ge);
}

/*************寫時分秒函數**************/
void write_sfm(uchar date,uchar add)
{
uchar shi,ge;
shi=date/10;
ge=date%10;
write_com(0x88+add);
write_date(0x30+shi);
write_date(0x30+ge);
}

/*****************鍵盤掃描*****************/
void keyscan()
{
uchar keynum;
if(key1==0)
{
delay(5);
if(key1==0)
{
while(!key1);
delay(5);
while(!key1);
keynum++;
TR0=0;
if(keynum==1)
{
//TR0=0;
write_com(0x8D);
write_com(0x0f);

}
if(keynum==2)
{
//TR0=0;
write_com(0x8B);
write_com(0x0f);
}
if(keynum==3)
{
//TR0=0;
write_com(0x89);
write_com(0x0f);
}
if(keynum==4)
{
//TR0=1;
write_com(0x95);
write_com(0x0f);
}
if(keynum==5)
{
//TR0=1;
write_com(0x85);
write_com(0x0f);
}
if(keynum==6)
{
//TR0=1;
write_com(0x83);
write_com(0x0f);
}
if(keynum==7)
{
//TR0=1;
write_com(0x81);
write_com(0x0f);
}
if(keynum==8)
{
//TR0=1;
write_com(0x80);
write_com(0x0f);
}
if(keynum==9)
{
TR0=1;
keynum=0;
//write_com(0x95);
write_com(0x0c);
}
}
}
if(keynum==1)
{
if(key2==0)
{
delay(5);
if(key2==0)
{
while(!key2);
delay(5);
while(!key2);
miao++;
if(miao==60)
miao=0;
write_sfm(miao,5);
write_com(0x8D);
}
}
if(key3==0)
{
delay(5);
if(key3==0)
{
while(!key3);
delay(5);
while(!key3);
miao--;
if(miao==-1)
miao=59;
write_sfm(miao,5);
write_com(0x8D);
}
}
}
if(keynum==2)
{
if(key2==0)
{
delay(5);
if(key2==0)
{
while(!key2);
delay(5);
while(!key2);
fen++;
if(fen==60)
fen=0;
write_sfm(fen,3);
write_com(0x8B);
}
}
if(key3==0)
{
delay(5);
if(key3==0)
{
while(!key3);
delay(5);
while(!key3);
fen--;
if(fen==-1)
fen=59;
write_sfm(fen,3);
write_com(0x8B);
}
}
}
if(keynum==3)
{
if(key2==0)
{
delay(5);
if(key2==0)
{
while(!key2);
delay(5);
while(!key2);
shi++;
if(shi==24)
shi=0;
write_sfm(shi,1);
write_com(0x89);
}
}
if(key3==0)
{
delay(5);
if(key3==0)
{
while(!key3);
delay(5);
while(!key3);
shi--;
if(shi==-1)
shi=23;
write_sfm(shi,1);
write_com(0x89);
}
}
}
if(keynum==4)
{
if(key2==0)
{
delay(5);
if(key2==0)
{
while(!key2);
delay(5);
while(!key2);
xq++;
if(xq==8)
xq=1;
write_xq(xq);
write_com(0x95);
}
}
if(key3==0)
{
delay(5);
if(key3==0)
{
while(!key3);
delay(5);
while(!key3);
xq--;
if(xq==0)
xq=7;
write_xq(xq);
write_com(0x95);
}
}
}
if(keynum==5)
{
if(key2==0)
{
delay(5);
if(key2==0)
{
while(!key2);
delay(5);
while(!key2);
ri++;
if(ri==31)
ri=1;
write_nyr(ri,5);
write_com(0x85);
}
}
if(key3==0)
{
delay(5);
if(key3==0)
{
while(!key3);
delay(5);
while(!key3);
ri--;
if(ri==0)
ri=30;
write_nyr(ri,5);
write_com(0x85);
}
}
}
if(keynum==6)
{
if(key2==0)
{
delay(5);
if(key2==0)
{
while(!key2);
delay(5);
while(!key2);
yue++;
if(yue==13)
yue=1;
write_nyr(yue,3);
write_com(0x83);
}
}
if(key3==0)
{
delay(5);
if(key3==0)
{
while(!key3);
delay(5);
while(!key3);
yue--;
if(yue==0)
yue=12;
write_nyr(yue,3);
write_com(0x83);
}
}
}
if(keynum==7)
{
if(key2==0)
{
delay(5);
if(key2==0)
{
while(!key2);
delay(5);
while(!key2);
nian++;
if(nian==100)
nian=0;;
write_nyr(nian,1);
write_com(0x81);
}
}
if(key3==0)
{
delay(5);
if(key3==0)
{
while(!key3);
delay(5);
while(!key3);
nian--;
if(nian==-1)
nian=99;
write_nyr(nian,1);
write_com(0x81);
}
}
}
if(keynum==8)
{
if(key2==0)
{
delay(5);
if(key2==0)
{
while(!key2);
delay(5);
while(!key2);
gwnian++;
if(gwnian==100)
gwnian=0;
write_nyr(gwnian,0);
write_com(0x80);
}
}
if(key3==0)
{
delay(5);
if(key3==0)
{
while(!key3);
delay(5);
while(!key3);
gwnian--;
if(gwnian==-1)
gwnian=99;
write_nyr(gwnian,0);
write_com(0x80);
}
}
}
}

/************主函數********************/
void main()
{
uint num;
led_en_port = 0;/*關閉發光二極體顯示*/
sled_en_port = 0;/*關閉數碼管顯示*/
gwnian=20;
nian=9;
yue=11;
ri=28;
xq=6;
shi=23;
fen=58;
miao=45;
init(); //12864液晶初始化；

write_com(0x80);//設置初始顯示的坐標；
for(num=0;num<8;num++) /******在第一行顯示製作人*******/
{
write_date(table[num]);
delay(100);
}
write_com(0x93); //第二行的初始坐標；
for(num=0;num<6;num++) /**********在第二行顯示江向陽*******/
{
write_date(table1[num]);
delay(100);
}
write_com(0x88);//第三行的初始坐標
for(num=0;num<16;num++) /******在第三行顯示製作時間*******/
{
write_date(table2[num]);
delay(100);
}
for(num=50;num>0;num--) ///延時，第一屏的顯示時間 ；
delay(50000);
TMOD=0x01; //定時器0工作方式1；
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
EA=0X01;
ET0=0X01;
TR0=0X01;
write_com(0x01);//清屏；
// delay(5);
// write_com(0x01);
write_com(0x80); //寫入初始的年月日數據（2009-11-28）；
write_date('2');
write_date('0');
write_date('0');
write_date('9');
write_com(0x83);
write_date('1');
write_date('1');
write_com(0x85);
write_date('2');
write_date('8');
write_com(0x95);
for(num=0;num<2;num++) //寫入星期函數（周六）；
{
write_date(xq6[num]);
}
write_com(0x89); //寫入初始的時分秒函數（23：58：45）；
write_date('2');
write_date('3');
write_com(0x8B);
write_date('5');
write_date('8');
write_com(0x8D);
write_date('4');
write_date('5');
write_com(0x82);
for(num=0;num<2;num++) //固定顯示『年』
{
write_date(table31[num]);
delay(1);
}
write_com(0x84);
for(num=0;num<2;num++) //固定顯示『月』
{
write_date(table32[num]);
delay(1);
}
write_com(0x86); //固定顯示『日』
for(num=0;num<2;num++)
{
write_date(table33[num]);
delay(1);
}
write_com(0x92); //固定顯示『星期』
for(num=0;num<4;num++)
{
write_date(table4[num]);
delay(1);
}
write_com(0x8A); //固定顯示'時'
for(num=0;num<2;num++)
{
write_date(table51[num]);
delay(1);
}
write_com(0x8C); //固定顯示'分'
for(num=0;num<2;num++)
{
write_date(table52[num]);
delay(1);
}
write_com(0x8E); //固定顯示'秒'
for(num=0;num<2;num++)
{
write_date(table53[num]);
delay(1);
}
write_com(0x98); //固定顯示'當前溫度：20.3'
for(num=0;num<14;num++)
{
write_date(table6[num]);
delay(1);
}

/***************顯示溫度字元命令****************/
write_com(0x64); //開啟擴展指令顯示；
write_com(0x9f); //設置顯示地址 ；
write_date(0xA1); //顯示的字元編碼地址；
write_date(0xE6);
write_com(0x66); //關閉擴展功能；

while(1)
{
keyscan;
}
}
void timer0() interrupt 1
{
uchar count;
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
count++;
if(count==18)
{
count=0;
miao++;
if(miao==60)
{
miao=0;
fen++;
if(fen==60)
{
fen=0;
shi++;
if(shi==24)
{
shi=0;
ri++;
xq++;
if(xq==8)
{
xq=1;
}
if(ri==31)
{
ri=1;
yue++;
if(yue==13)
{
yue=1;
nian++;
if(nian==100)
{
nian=0;
gwnian++;
if(gwnian==100)
gwnian=0;
write_nyr(gwnian,0);
}
write_nyr(nian,1);
}
write_nyr(yue,3);
}
write_xq(xq);
write_nyr(ri,5);
}
write_sfm(shi,1);
}
write_sfm(fen,3);
}
write_sfm(miao,5);
}

}