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#include <reg52.h> #define uchar unsigned char #define uint unsigned int sbit ds=P2^4; //温度传感器信号线 sbit beep=P2^3;//蜂鸣器 sbit re=P2^2; //热释电 sbit gm=P2^7;//光敏 sbit s0=P1^3;//智能 sbit s1=P3^0;//功能键 sbit s2=P3^1;//增加键 sbit s3=P3^4;//减小键 sbit s4=P3^5;//闹钟查看键 sbit s5=P3^6;//调光 sbit s6=P3^2;//显示温度 sbit rs=P1^0; // sbit lcden=P1^2; // 液晶 sbit wr=P1^1; // sbit led1=P2^0; sbit led2=P2^1; //led sbit led3=P2^5; sbit led4=P2^6; sbit rd=P3^7; sbit dscs=P1^7; sbit dsas=P1^6; sbit dsrw=P1^5; //时钟芯片 sbit dsds=P1^4; sbit dsirq=P3^3; uint temp; float f_temp; uchar s5num=0,s0num=0,s6num=0; uchar flag1=0,flag_ri;//定义两个位变量 uchar count,s1num,flag=0,t0_num;//其它变量定义 ucharmiao,shi,fen,year,month,day,week,amiao,afen,ashi; uchar code table[]=" 20 - - ";//液晶固定显示内容 uchar code table1[]=" : : "; uchar codetable2[]="WELCOME!"; void write_ds(uchar,uchar);//函数申明 void set_alarm(uchar,uchar,uchar);voidread_alarm(); uchar read_ds(uchar);void set_time(); /************************************************/ /*led*/ void led(uchar x) { switch(x) { case 0: led1=1;led2=0;led3=1;led4=0;break; case 1: led1=0;led2=0;led3=1;led4=0; break; case 3: led1=0;led2=0;led3=0;led4=1; break; case 2: led1=1;led2=1;led3=0;led4=0; break; case 4: led1=0;led2=1;led3=0;led4=1; break; } } /***************************************************/ void delay(uint z)//延时函数 { uintx,y; for(x=z;x>0;x--) for(y=110;y>0;y--); } void di() //蜂鸣器报警声音 { beep=0; delay(100); beep=1; } void write_com(uchar com) {//写液晶命令函数 rs=0; lcden=0; P0=com; delay(3); lcden=1; delay(3); lcden=0; } void write_date(uchar date) {//写液晶数据函数 rs=1; lcden=0; P0=date; delay(3); lcden=1; delay(3); lcden=0; } void init() {//初始化函数 uchari; EA=1;//打开总中断 EX0=1;//开外部中断1 IT0=1;//设置负跳变沿触发中断 EX1=1;//开外部中断1 IT1=1;//设置负跳变沿触发中断 flag1=0;//变量初始化 t0_num=0; s1num=0; week=1; lcden=0; rd=0; /*以下几行在首次设置DS12C887时使用，以后不必再写入 write_ds(0x0A,0x20);//打开振荡器 write_ds(0x0B,0x26);//设置24小时模式，数据二进制格式 //开启闹铃中断 set_time();//设置上电默认时间 -----------------------------------------------------*/ write_com(0x38);//1602液晶初始化 write_com(0x0c); write_com(0x06); write_com(0x01); write_com(0x80); for(i=0;i<15;i++)//写入液晶固定部分显示 { write_date(table); delay(1); } write_com(0x80+0x40); for(i=0;i<16;i++) { write_date(table1); delay(1); } } void write_sfm(uchar add,char date) {//1602液晶刷新时分秒函数4为时，7为分，10为秒 charshi,ge; shi=date/10; ge=date%10; write_com(0x80+0x40+add); write_date(0x30+shi); write_date(0x30+ge); } void write_nyr(uchar add,char date) {//1602液晶刷新年月日函数3为年，6为分，9为秒 charshi,ge; shi=date/10; ge=date%10; write_com(0x80+add); write_date(0x30+shi); write_date(0x30+ge); } void write_week(char we) {//写液晶星期显示函数 write_com(0x80+12); switch(we) { case 1: write_date('M');delay(5); write_date('O');delay(5); write_date('N'); break; case 2: write_date('T');delay(5); write_date('U');delay(5); write_date('E'); break; case 3: write_date('W');delay(5); write_date('E');delay(5); write_date('D'); break; case 4: write_date('T');delay(5); write_date('H');delay(5); write_date('U'); break; case 5: write_date('F');delay(5); write_date('R');delay(5); write_date('I'); break; case 6: write_date('S');delay(5); write_date('A');delay(5); write_date('T'); break; case 7: write_date('S');delay(5); write_date('U');delay(5); write_date('N'); break; } } void keyscan() { if(flag_ri==1) {//这里用来取消闹钟报警，任一键取消报警 if((s1==0)||(s2==0)||(s3==0)||(s4==0)) { delay(5); if((s1==0)||(s2==0)||(s3==0)||(s4==0)) { while(!(s1&&s2&&s3&&s4)); di(); flag_ri=0;//清除报警标志 } } } if(s1==0)//检测S1 { delay(10); if(s1==0) { s1num++;//记录按下次数 if(flag1==1) if(s1num==4) s1num=1; flag=1; while(!s1);di(); switch(s1num) {//光标闪烁点定位 case 1: write_com(0x80+0x40+10); write_com(0x0f); break; case 2: write_com(0x80+0x40+7); break; case 3: write_com(0x80+0x40+4); break; case 4: write_com(0x80+12); break; case 5: write_com(0x80+9); break; case 6: write_com(0x80+6); break; case 7: write_com(0x80+3); break; case 8: s1num=0; write_com(0x0c); flag=0; write_ds(0,miao); write_ds(2,fen); write_ds(4,shi); write_ds(6,week); write_ds(7,day); write_ds(8,month); write_ds(9,year); break; } } } if(s1num!=0)//只有当S1按下后，才检测S2和S3 { if(s2==0) { delay(10); if(s2==0) { while(!s2);di(); switch(s1num) {//根据功能键次数调节相应数值 case1: miao++; if(miao==60) miao=0; write_sfm(10,miao); write_com(0x80+0x40+10); break; case2: fen++; if(fen==60) fen=0; write_sfm(7,fen); write_com(0x80+0x40+7); break; case3: shi++; if(shi==24) shi=0; write_sfm(4,shi); write_com(0x80+0x40+4); break; case4: week++; if(week==8) week=1; write_week(week); write_com(0x80+12); break; case5: day++; if(day==32) day=1; write_nyr(9,day); write_com(0x80+9); break; case6: month++; if(month==13) month=1; write_nyr(6,month); write_com(0x80+6); break; case7: year++; if(year==100) year=0; write_nyr(3,year); write_com(0x80+3); break; } } } if(s3==0) { delay(10); if(s3==0) { while(!s3);di(); switch(s1num) {//根据功能键次数调节相应数值 case1: miao--; if(miao==-1) miao=59; write_sfm(10,miao); write_com(0x80+0x40+10); break; case2: fen--; if(fen==-1) fen=59; write_sfm(7,fen); write_com(0x80+0x40+7); break; case3: shi--; if(shi==-1) shi=23; write_sfm(4,shi); write_com(0x80+0x40+4); break; case4: week--; if(week==0) week=7; write_week(week); write_com(0x80+12); break; case5: day--; if(day==0) day=31; write_nyr(9,day); write_com(0x80+9); break; case6: month--; if(month==0) month=12; write_nyr(6,month); write_com(0x80+6); break; case7: year--; if(year==-1) year=99; write_nyr(3,year); write_com(0x80+3); break; } } } } if(s4==0)//检测S4 { delay(10); if(s4==0) { flag1=~flag1; while(!s4);di(); if(flag1==0) {//退出闹钟设置时保存数值 flag=0; write_com(0x80+0x40); write_date(' '); write_date(' '); write_com(0x0c); write_ds(1,miao); write_ds(3,fen); write_ds(5,shi); } else {//进入闹钟设置 read_alarm();//读取原始数据 miao=amiao;//重新赋值用以按键调节 fen=afen; shi=ashi; write_com(0x80+0x40); write_date('R');//显示标志 write_date('i'); write_com(0x80+0x40+3); write_sfm(4,ashi);//送液晶显示闹钟时间 write_sfm(7,afen); write_sfm(10,amiao); } } } if(s0==0) { delay(10); if(s0==0) { di(); s0num++; if(s0num==2) s0num=0; } } if(s5==0) { delay(10); if(s5==0) { di(); s5num++; if(s5num==5) s5num=0; led(s5num); delay(10); } while(!s5); delay(10); while(!s5); } } void write_ds(uchar add,uchar date) {//写12C887函数 dscs=0; dsas=1; dsds=1; dsrw=1; P0=add;//先写地址 dsas=0; dsrw=0; P0=date;//再写数据 dsrw=1; dsas=1; dscs=1; } uchar read_ds(uchar add) {//读12C887函数 uchar ds_date; dsas=1; dsds=1; dsrw=1; dscs=0; P0=add;//先写地址 dsas=0; dsds=0; P0=0xff; ds_date=P0;//再读数据 dsds=1; dsas=1; dscs=1; returnds_date; } /*---首次操作12C887时给予寄存器初始化--- void set_time() {//首次上电初始化时间函数 write_ds(0,0); write_ds(1,0); write_ds(2,28); write_ds(3,0); write_ds(4,4); write_ds(5,0); write_ds(6,7); write_ds(7,10); write_ds(8,5); write_ds(9,15); } ----------------------------------------*/ void read_alarm() {//读取12C887闹钟值 amiao=read_ds(1); afen=read_ds(3); ashi=read_ds(5); } /***********ds18b20**********/ void dsreset(void) //18B20复位，初始化函数 { uint i; ds=0; i=103; while(i>0)i--; ds=1; i=4; while(i>0)i--; } bit tempreadbit(void) //读1位函数 { uint i; bit dat; ds=0;i++; //i++ 起延时作用 ds=1;i++;i++; dat=ds; i=8;while(i>0)i--; return (dat); } uchar tempread(void) //读1个字节 { uchar i,j,dat; dat=0; for(i=1;i<=8;i++) { j=tempreadbit(); dat=(j<<7)|(dat>>1); //读出的数据最低位在最前面，这样刚好一个字节在DAT里 } return(dat); } void tempwritebyte(uchar dat) //向18B20写一个字节数据 { uint i; uchar j; bit testb; for(j=1;j<=8;j++) { testb=dat&0x01; dat=dat>>1; if(testb) //写 1 { ds=0; i++;i++; ds=1; i=8;while(i>0)i--; } else { ds=0; //写 0 i=8;while(i>0)i--; ds=1; i++;i++; } } } void tempchange(void) //DS18B20 开始获取温度并转换 { dsreset(); delay(1); tempwritebyte(0xcc); // 写跳过读ROM指令 tempwritebyte(0x44); // 写温度转换指令 } uint get_temp() //读取寄存器中存储的温度数据 { uchar a,b; dsreset(); delay(1); tempwritebyte(0xcc); tempwritebyte(0xbe); a=tempread(); //读低8位 b=tempread(); //读高8位 temp=b; temp<<=8; //两个字节组合为1个字 temp=temp|a; f_temp=temp*0.0625; //温度在寄存器中为12位 分辨率位0.0625° temp=f_temp*10+0.5; //乘以10表示小数点后面只取1位，加0.5是四舍五入 f_temp=f_temp+0.05; return temp; //temp是整型 } ////////////////////显示程序////////////////////////// void dis_temp(uint t) { uchar a,b; write_com(0x80+0x40); a=t/100; if(a==0) b='0'; if(a==1) b='1'; if(a==2) b='2'; if(a==3) b='3'; if(a==4) b='4'; if(a==5) b='5'; if(a==6) b='6'; if(a==7) b='7'; if(a==8) b='8'; if(a==9) b='9'; write_date(b); delay(5); a=t%100/10; if(a==0) b='0'; if(a==1) b='1'; if(a==2) b='2'; if(a==3) b='3'; if(a==4) b='4'; if(a==5) b='5'; if(a==6) b='6'; if(a==7) b='7'; if(a==8) b='8'; if(a==9) b='9'; write_date(b); delay(5); write_date(0x2e); delay(5); a=t%100%10; if(a==0) b='0'; if(a==1) b='1'; if(a==2) b='2'; if(a==3) b='3'; if(a==4) b='4'; if(a==5) b='5'; if(a==6) b='6'; if(a==7) b='7'; if(a==8) b='8'; if(a==9) b='9'; write_date(b); delay(5); write_date(0xdf); delay(5); write_date(0x43); delay(5); } /************************************************/ /*智能*/ void re200b() { if(s0num==1) { if(re==1 && gm==1) { if(s5num==0) { s5num=1; } } if(re==0||gm==0) { s5num=0; } led(s5num); } if(s0num==0) { led(s5num); } } void main()//主函数 { uchari; wr=0; init(); led(0); write_com(0x01); for (i=0;i<8;i++) { write_date(table2); delay(20); } delay(4000); init(); while(1) { keyscan();//按键扫描 re200b(); if(flag_ri==1)//当闹钟中断时进入这里 { di(); delay(100); di(); delay(500); } if(flag==0&&flag1==0)//正常工作时进入这里 { keyscan();//按键扫描 year=read_ds(9);//读取12C887数据 month=read_ds(8); day=read_ds(7); week=read_ds(6); shi=read_ds(4); fen=read_ds(2); miao=read_ds(0); write_sfm(10,miao);//送液晶显示 write_sfm(7,fen); write_sfm(4,shi); write_week(week); write_nyr(3,year); write_nyr(6,month); write_nyr(9,day); } } } void exter() interrupt 2//外部中断1服务程序 { ucharc; //进入中断表示闹钟时间到， flag_ri=1;//设置标志位，用以大程序中报警提示 c=read_ds(0x0c);//读取12C887的C寄存器表示响应了中断 } void wendu() interrupt 0//外部中断0服务程序 { uchari; di(); for(i=0;i<4;i++) { write_com(0x01); tempchange(); dis_temp(get_temp()); delay(700); } write_com(0x01); for(i=0;i<15;i++)//写入液晶固定部分显示 { write_date(table); delay(1); } write_com(0x80+0x40); for(i=0;i<16;i++) { write_date(table1); delay(1); } }
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