程序#include<reg51.h>#include<intrins.h>#define uchar unsigned char#define uint unsigned int#define jump_ROM 0xCC#define start 0x44#define readdata 0xBEsbit dq=P1^7;sbit w1=P0^6;sbit w2=P0^5;sbit w3=P0^4;sbit w4=P0^7;sbit wela=P0^3;sbit A=P0^0;sbit b=P0^1;sbit C=P0^2;sbit SCLK=P1^0; //DS1302通讯线定义sbit DIO=P1^1;sbit RST=P1^2;sbit k1=P1^6;sbit k2=P1^5;sbit add=P1^4;sbit sub=P1^3;uchar code smgw[]={0,1,2,3,4,5,6,7};uchar code smgd[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x00};//uchar code tab[]={0x077,0x12,0x0c7,0x0d3,0x0b2,0x0f1,0x0f4,0x13,0x0f7,0x0b3,0x00}; uchar temperature[10]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};uchar code xingqi[] ={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x7f};uchar tab1[9];uchar tab2[9];uchar nian,yue,ri,zhou,shi,fen,miao,a,shan,tt,shan;uchar knum;uchar q,j,tempp;void display();void delay(uint z){uint x,y;for(x=z;x>0;x--)for(y=55;y>0;y--);}void delay1(int useconds){int s;for(s=0;s<useconds;s++);}uchar resetds(void){uchar presencesignal;dq=0;delay1(30);dq=1;delay1(3);presencesignal=dq;delay1(30);return presencesignal;}void writebit(char val){ dq=0;if(val==1)dq=1;elsedq=0;delay1(5);dq=1;}void writebyte(char val) {uchar i;uchar temp;for(i=0;i<8;i++){temp=val>>i;temp&=0x01;writebit(temp);}delay1(5);}uchar readbit(void) {uchar i;dq=0;dq=1;for(i=0;i<3;i++)return dq;}uchar readbyte(void) {uchar i;uchar value=0;for(i=0;i<8;i++) {if(readbit())value|=0x01<<i;delay1(7);}return (value);}void temper(){uchar get[9];uchar k,lsb,msb,n;int m;float t;m=0;resetds();writebyte(jump_ROM);writebyte(start);delay1(5);resetds();writebyte(jump_ROM);writebyte(readdata);display();for(k=0;k<9;k++){get[k]=readbyte();}msb=get[1];lsb=get[0];if((msb&0x80)!=0) // /取补码/ {m=1;msb=~msb;lsb=( ~lsb)+1;if(lsb==0){msb++;}}display();n=lsb;msb=msb<<4;lsb=lsb>>4;tempp=msb|lsb;n=n&0x0f;t=(float )(n);t=t*0.0625;j=(int)(t*100);P2=temperature[j%10];w4=1;w1=0;delay(2);P2= temperature[j/10];w1=1;w2=0;delay(2);P2=temperature[tempp%10]+0x80;w2=1;w3=0;delay(2);P2= temperature[tempp/10];w3=1;w4=0;delay(2);w4=1;}void write(uchar date) //写入DS1302一个字节{uchar temp,i;RST=1;SCLK=0;temp=date;for(i=0;i<8;i++){SCLK=0;if(temp&0x01)DIO=1;elseDIO=0;SCLK=1;temp>>=1;}}uchar read() //读出DS1302一个字节{uchar a,temp;RST=1;for(a=8;a>0;a--){temp>>=1;SCLK=1;_nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_();SCLK=0;if(DIO){temp=temp|0x80;}else{temp=temp|0x00;}}return (temp);}void write_1302(uchar add,uchar dat) //写DS1302数据{RST=0;SCLK=0;RST=1;write(add);write(dat);SCLK=1;RST=0;}uchar read_1302(uchar add) //读DS1302数据{uchar dat1,dat2;RST=0;SCLK=0;RST=1;write(add);dat1=read();SCLK=1;RST=0;dat2=dat1/16; //数据进制转换dat1=dat1%16;dat1=dat1+dat2*10; //十六进制转十进制return(dat1);}void ds1302_init() //1302初始化{RST=0;SCLK=0;write_1302(0x8e,0x00); //允许写入write_1302(0x80,0x00);//设置初始值SECwrite_1302(0x82,0x59);//设置初始值MINwrite_1302(0x84,0x23);//设置初始值HRwrite_1302(0x86,0x20);//设置初始值DA TEwrite_1302(0x88,0x4);//设置初始值MONTH write_1302(0x8A,0x03);//设置初始值DAYwrite_1302(0x8C,0x12);//设置初始值YEARwrite_1302(0x8e,0x80);}void display(){ P2=temperature[j%10];w4=1;w1=0;delay(2);P2= temperature[j/10];w1=1;w2=0;delay(2);P2=temperature[tempp%10]+0x80;w2=1;w3=0;delay(2);P2= temperature[tempp/10];w3=1;w4=0;delay(2);w4=1;miao=read_1302(0x81); //读秒fen=read_1302(0x83); //读分shi=read_1302(0x85);//&0x3f; //读时ri=read_1302(0x87); //读日yue=read_1302(0x89); //读月nian=read_1302(0x8d); //读年zhou=read_1302(0x8B); //读星期if(knum==7){wela=0; //年A=0;b=1;C=1;P2=0x5b&shan;delay(2);A=1;b=1;C=1;P2=0x3f&shan;delay(2);wela=1;A=0;b=0;C=0;P2=smgd[nian/10]&shan;delay(2);A=1;b=0;C=0;P2=smgd[nian%10]&shan;delay(2);}else{wela=0; //年A=0;b=1;C=1;P2=0x5b;delay(2);A=1;b=1;C=1;P2=0x3f;delay(2);wela=1;A=0;b=0;C=0;P2=smgd[nian/10];delay(2);A=1;b=0;C=0;P2=smgd[nian%10];delay(2);}if(knum==6){ wela=1;A=0;b=1;C=0; // 月P2= smgd [yue/10]&shan;delay(2);A=1;b=1;C=0;P2= smgd [yue%10]&shan;delay(2);}else{ wela=1;A=0;b=1;C=0; // 月P2=smgd [yue/10];delay(2);A=1;b=1;C=0;P2= smgd [yue%10];delay(2);}if(knum==4){ wela=1;A=0;b=1;C=1; // 星期P2=xingqi[zhou%10]&shan;delay(2);}else{A=0;b=1;C=1; // 星期P2=xingqi[zhou%10];delay(2);}if(knum==5){wela=1;A=0;b=0;C=1; // 日P2= smgd [ri/10]&shan;delay(2);A=1;b=0;C=1;P2= smgd [ri%10]&shan;delay(2);}else{ wela=1;A=0;b=0;C=1; // 日P2= smgd [ri/10];delay(2);A=1;b=0;C=1;P2= smgd [ri%10];delay(2);}if(knum==3){ wela=0;A=0;b=0;C=0; // 时P2= smgd [shi/10]&shan;delay(2);A=1;b=0;C=0;P2= smgd [shi%10]&shan;delay(2);}else{ wela=0;A=0;b=0;C=0; // 时P2= smgd [shi/10];delay(2);A=1;b=0;C=0;P2= smgd [shi%10];delay(2);}if(knum==2){ wela=0;A=0;b=1;C=0; // 分P2= smgd [fen/10]&shan;delay(2);A=1;b=1;C=0;P2= smgd [fen%10]&shan;delay(2);}else{ wela=0;A=0;b=1;C=0; // 分P2= smgd [fen/10];delay(2);A=1;b=1;C=0;P2= smgd [fen%10];delay(2);}if(knum==1){ wela=0;A=0;b=0;C=1; // 秒P2= smgd [miao/10]&shan;delay(2);A=1;b=0;C=1;P2= smgd [miao%10]&shan;delay(2);wela=1;A=1;b=1;C=1;}else{ wela=0;A=0;b=0;C=1; //秒P2= smgd [miao/10];delay(2);A=1;b=0;C=1;P2= smgd [miao%10];delay(2);wela=1;A=1;b=1;C=1;}}void key(){uchar temp;display();if(k1==0){delay1(20);if(k1==0){while(!k1);knum++;if(knum==8){knum=1;}}}if(k2==0){delay1(20);if(k2==0){while(!k2);knum--;if(knum==0){knum=7;}}}if(knum!=0){if(add==0){delay1(20);if(add==0){while(!add);switch(knum){case 1: miao++;if(miao==60){miao=0;}temp=(miao)/10*16+(miao)%10;//十进制转换成DS1302要求的DCB码write_1302(0x8e,0x00); //允许写，禁止写保护write_1302(0x80,temp);write_1302(0x8e,0x80); //打开写保护break;case 2:fen++;if(fen==60)fen=0;temp=(fen)/10*16+(fen)%10;//十进制转换成DS1302要求的DCB码write_1302(0x8e,0x00); //允许写，禁止写保护write_1302(0x82,temp);write_1302(0x8e,0x80); //打开写保护}break;case 3: shi++;if(shi==24){shi=0;}temp=(shi)/10*16+(shi)%10;//十进制转换成DS1302要求的DCB码write_1302(0x8e,0x00); //允许写，禁止写保护write_1302(0x84,temp);write_1302(0x8e,0x80); //打开写保护break;case 5:ri++;switch(yue){case 1:case 3:case 5:case 7:case 8:case 10:case 12:if(ri==32)ri=1;break;case 4:case 6:case 9:case 11:if(ri==31)ri=1;break;case 2:if(nian%4==0||nian%400==0){if(ri==30)ri=1;}elseif(ri==29)ri=1;}break;}temp=(ri)/10*16+(ri)%10;//十进制转换成DS1302要求的DCB码write_1302(0x8e,0x00); //允许写，禁止写保护write_1302(0x86,temp);write_1302(0x8e,0x80); //打开写保护break;case 4:zhou++;if(zhou==8)zhou=1;temp=(zhou)/10*16+(zhou)%10;//十进制转换成DS1302要求的DCB码write_1302(0x8e,0x00); //允许写，禁止写保护write_1302(0x8a,temp); //向DS1302内写秒寄存器80H写入调整后的秒数据BCD码write_1302(0x8e,0x80); //打开写保护break;case 6: yue++;if(yue==13)yue=1;temp=(yue)/10*16+(yue)%10;//十进制转换成DS1302要求的DCB码write_1302(0x8e,0x00); //允许写，禁止写保护write_1302(0x88,temp);write_1302(0x8e,0x80); //打开写保护break;case 7:nian=(((nian>>4)&0x0f)*10+(nian&0x0f))+1;if(nian==99)nian=0;//temp=(nian)/10*16+(nian)%10;//十进制转换成DS1302要求的DCB码write_1302(0x8e,0x00); //允许写，禁止写保护write_1302(0x8c,((nian/10)<<4)+((nian%10)&0x0f)); //向DS1302内写秒寄存器80H写入调整后的秒数据BCD码write_1302(0x8e,0x80); //打开写保护break;}}if(sub==0){delay1(20);if(sub==0){while(!sub);switch(knum){case 1: miao--;if(miao==-1)miao=59;temp=(miao)/10*16+(miao)%10;//十进制转换成DS1302要求的DCB码write_1302(0x8e,0x00); //允许写，禁止写保护write_1302(0x80,temp);//write_1302(0x80,((miao/10)<<4)+((miao%10)&0x0f)); //向DS1302内写秒寄存器80H写入调整后的秒数据BCD码write_1302(0x8e,0x80); //打开写保护break;case 2:fen--;if(fen==-1)fen=59;temp=(fen)/10*16+(fen)%10;//十进制转换成DS1302要求的DCB码write_1302(0x8e,0x00); //允许写，禁止写保护write_1302(0x82,temp);//write_1302(0x82,((fen/10)<<4)+((fen%10)&0x0f)); //向DS1302内写秒寄存器80H写入调整后的秒数据BCD码write_1302(0x8e,0x80); //打开写保护}break;case 3:shi--;if(shi==-1)shi=23;temp=(shi)/10*16+(shi)%10;//十进制转换成DS1302要求的DCB码write_1302(0x8e,0x00); //允许写，禁止写保护write_1302(0x84,temp);//write_1302(0x84,((shi/10)<<4)+((fen%10)&0x0f)); //向DS1302内写秒寄存器80H写入调整后的秒数据BCD码write_1302(0x8e,0x80); //打开写保护break;case 5:ri--;switch(yue){case 1:case 3:case 5:case 7:case 8:case 10:case 12:if(ri==0)ri=31;break;case 4:case 6:case 9:case 11:if(ri==0)ri=30;break;case 2:if(nian%4==0||nian%400==0){if(ri==0)ri=29;}else{if(ri==0)ri=28;}break;}temp=(ri)/10*16+(ri)%10;//十进制转换成DS1302要求的DCB码write_1302(0x8e,0x00); //允许写，禁止写保护write_1302(0x86,temp);//write_1302(0x86,((ri/10)<<4)+((ri%10)&0x0f)); //向DS1302内写秒寄存器80H写入调整后的秒数据BCD码write_1302(0x8e,0x80); //打开写保护break;case 4:zhou--;if(zhou==0)zhou=7;temp=(zhou)/10*16+(zhou)%10;//十进制转换成DS1302要求的DCB码write_1302(0x8e,0x00); //允许写，禁止写保护write_1302(0x8a,temp); //向DS1302内写秒寄存器80H写入调整后的秒数据BCD码write_1302(0x8e,0x80); //打开写保护break;case 6: yue--;//yue=(((yue>>4)&0x01)*10+(yue&0x0f))-1;if(yue==0)yue=12;temp=(yue)/10*16+(yue)%10;//十进制转换成DS1302要求的DCB码write_1302(0x8e,0x00); //允许写，禁止写保护write_1302(0x88,temp); //向DS1302内写秒寄存器80H写入调整后的秒数据BCD码write_1302(0x8e,0x80); //打开写保护break;case 7:nian=(((nian>>4)&0x0f)*10+(nian&0x0f))-1;if(nian==-1)nian=99;//temp=(nian)/10*16+(nian)%10;//十进制转换成DS1302要求的DCB码write_1302(0x8e,0x00); //允许写，禁止写保护write_1302(0x8c,((nian/10)<<4)+((nian%10)&0x0f)); //向DS1302内写秒寄存器80H写入调整后的秒数据BCD码write_1302(0x8e,0x80); //打开写保护break;}}}}}void main(){ds1302_init();IT0=1;EX0=1;TMOD=1;TH0=(65536-50000)/256;TL0=(65536-50000)%256;EA=1;ET0=1;TR0=1;shan=0x00;temper();while(1){temper();for(q=0;q<230;q++)key();display();}}void int0() interrupt 0{TR0=~TR0;knum=0;shan=0x0ff;}void time0() interrupt 1{TH0=(65536-50000)/256;TL0=(65536-50000)%256;tt++;if(tt==9){tt=0;shan=~shan;}}。