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1、一、 方案该作品是个性化电子钟设计，技术上主要用单片机（AT89c51）主控，16脚的液晶显示，有DS1302芯片制作电子时钟，用DS18B20芯片来完成温度的测控。二、电路特色 此次设计的带温度显示的电子钟，具有万年历（调节），整点报时，闹钟，蜂鸣器播放音乐（生日快乐歌）等功能。三、流程图四、程序#include #include /#include LCD1602.h/#include DS1302.h#define uint unsigned int#define uchar unsigned charsbit DS1302_CLK = P17; /实时时钟时钟线引脚sbit DS130
2、2_IO = P16; /实时时钟数据线引脚sbit DS1302_RST = P15; /实时时钟复位线引脚sbit beep=P34;sbit ACC0 = ACC0;sbit ACC7 = ACC7;char hide_sec,hide_min,hide_hour,hide_day,hide_week,hide_month,hide_year,hide_m,hide_f,hide_h;sbit Set = P20; /模式切换键sbit Up = P21; /加法按钮sbit Down = P22; /减法按钮sbit out = P23; /立刻跳出调整模式按钮sbit DQ = P1
3、0; /温度传送数据IO口sbit dd=P24;char done,count,temp,flag,up_flag,down_flag,key;uchar temp_value; /温度值uchar m,f,h,mo,d,y,w,kaiguan,h=12,f=30;uchar TempBuffer5,week_value2,nao8;void naotime();uchar code tone=212,212,190,212,159,169,212,212,190,212,142,159,212,212,106,126,159,169,190,119,119,126,159,142,159,
4、0;uchar code lon=9,3,12,12,12,24,9,3,12,12,12,24,9,3,12,12,12,12,12,9,3,12,12,12,24,0;void delay(uint z)uint x,y;for(x=z;x0;x-)for(y=110;y0;y-);void music()uint i,j,k=0,m;for(m=0;m26;m+)for(i=0;ilonk*20;i+)beep=beep;for(j=0;j0; i-)DS1302_IO = ACC0; /相当于汇编中的 RRCDS1302_CLK = 1;DS1302_CLK = 0;ACC = ACC
5、 1;unsigned char DS1302OutputByte(void) /实时时钟读取一字节(内部函数)unsigned char i;for(i=8; i0; i-)ACC = ACC 1; /相当于汇编中的 RRCACC7 = DS1302_IO;DS1302_CLK = 1;DS1302_CLK = 0;return(ACC);void Write1302(unsigned char ucAddr, unsigned char ucDa)/ucAddr: DS1302地址, ucData: 要写的数据DS1302_RST = 0;DS1302_CLK = 0;DS1302_RST
6、 = 1;DS1302InputByte(ucAddr); / 地址，命令DS1302InputByte(ucDa); / 写1Byte数据DS1302_CLK = 1;DS1302_RST = 0;unsigned char Read1302(unsigned char ucAddr)/读取DS1302某地址的数据unsigned char ucData;DS1302_RST = 0;DS1302_CLK = 0;DS1302_RST = 1;DS1302InputByte(ucAddr|0x01); / 地址，命令ucData = DS1302OutputByte(); / 读1Byte数
7、据DS1302_CLK = 1;DS1302_RST = 0;return(ucData);void DS1302_GetTime(SYSTEMTIME *Time) /获取时钟芯片的时钟数据到自定义的结构型数组unsigned char ReadValue;ReadValue = Read1302(DS1302_SECOND);Time-Second = (ReadValue&0x70)4)*10 + (ReadValue&0x0F);ReadValue = Read1302(DS1302_MINUTE);Time-Minute = (ReadValue&0x70)4)*10 + (Read
8、Value&0x0F);ReadValue = Read1302(DS1302_HOUR);Time-Hour = (ReadValue&0x70)4)*10 + (ReadValue&0x0F);ReadValue = Read1302(DS1302_DAY);Time-Day = (ReadValue&0x70)4)*10 + (ReadValue&0x0F);ReadValue = Read1302(DS1302_WEEK);Time-Week = (ReadValue&0x70)4)*10 + (ReadValue&0x0F);ReadValue = Read1302(DS1302_M
9、ONTH);Time-Month = (ReadValue&0x70)4)*10 + (ReadValue&0x0F);ReadValue = Read1302(DS1302_YEAR);Time-Year = (ReadValue&0x70)4)*10 + (ReadValue&0x0F);void DateToStr(SYSTEMTIME *Time) /将时间年,月,日,星期数据转换成液晶显示字符串,放到数组里DateString if(hide_year2) /这里的if,else语句都是判断位闪烁,2就不显示,输出字符串为 2007/07/22Time-DateString0 = 2
10、;Time-DateString1 = 0;Time-DateString2 = Time-Year/10 + 0;Time-DateString3 = Time-Year%10 + 0;elseTime-DateString0 = ;Time-DateString1 = ;Time-DateString2 = ;Time-DateString3 = ;Time-DateString4 = /;if(hide_monthDateString5 = Time-Month/10 + 0;Time-DateString6 = Time-Month%10 + 0;elseTime-DateString
11、5 = ;Time-DateString6 = ;Time-DateString7 = /;if(hide_dayDateString8 = Time-Day/10 + 0;Time-DateString9 = Time-Day%10 + 0;Time-DateString10 = ;Time-DateString11 = ;elseTime-DateString8 = ;Time-DateString9 = ;Time-DateString10 = ;Time-DateString11 = ;if(hide_weekWeek%10 + 0; /星期的数据另外放到 week_value数组里,
12、跟年,月,日的分开存放,因为等一下要在最后显示elseweek_value0 = ;week_value1 = 0;Time-DateString10 = 0; /字符串末尾加 0 ,判断结束字符void TimeToStr(SYSTEMTIME *Time) /将时,分,秒数据转换成液晶显示字符放到数组 TimeString;if(hide_hourTimeString0 = Time-Hour/10 + 0;Time-TimeString1 = Time-Hour%10 + 0;elseTime-TimeString0 = ;Time-TimeString1 = ;Time-TimeStr
13、ing2 = :;if(hide_minTimeString3 = Time-Minute/10 + 0;Time-TimeString4 = Time-Minute%10 + 0;elseTime-TimeString3 = ;Time-TimeString4 = ;Time-TimeString5 = :;if(hide_secTimeString6 = Time-Second/10 + 0;Time-TimeString7 = Time-Second%10 + 0;Time-TimeString8 = ;elseTime-TimeString6 = ;Time-TimeString7 =
14、 ;Time-TimeString8 = ;Time-DateString9 = 0;void baoshi(SYSTEMTIME *Time)if(Time-HourHour8&Time-Minute/10=0&Time-Minute%10=0&Time-Second/10=0&Time-Second%10=0)music();void naozhong(SYSTEMTIME *Time) if(Time-Minute%10=(f%10)&Time-Minute/10=(f/10)&Time-Hour%10=(h%10)&Time-Hour/10=(h/10)&Time-Second%10=
15、(m%10)&Time-Second/10=(m/10) music();void Initial_DS1302(void) /时钟芯片初始化unsigned char Second=Read1302(DS1302_SECOND);if(Second&0x80) /判断时钟芯片是否关闭Write1302(0x8e,0x00); /写入允许Write1302(0x8c,0x07); /以下写入初始化时间 日期:07/07/25.星期: 3. 时间: 23:59:55Write1302(0x88,0x07);Write1302(0x86,0x25);Write1302(0x8a,0x07);Wri
16、te1302(0x84,0x23);Write1302(0x82,0x59);Write1302(0x80,0x55);Write1302(0x8e,0x80); /禁止写入/*ds18b20子程序*/*ds18b20延迟子函数（晶振12MHz ）*/void delay_18B20(unsigned int i)while(i-);/*ds18b20初始化函数*/void Init_DS18B20(void)unsigned char x=0;DQ = 1; /DQ复位delay_18B20(8); /稍做延时DQ = 0; /单片机将DQ拉低delay_18B20(80); /精确延时 大
17、于 480usDQ = 1; /拉高总线delay_18B20(14);x=DQ; /稍做延时后 如果x=0则初始化成功 x=1则初始化失败delay_18B20(20);/*ds18b20读一个字节*/unsigned char ReadOneChar(void)uchar i=0;uchar dat = 0;for (i=8;i0;i-)DQ = 0; / 给脉冲信号dat=1;DQ = 1; / 给脉冲信号if(DQ)dat|=0x80;delay_18B20(4);return(dat);/*ds18b20写一个字节*/void WriteOneChar(uchar dat)unsig
18、ned char i=0;for (i=8; i0; i-)DQ = 0;DQ = dat&0x01;delay_18B20(5);DQ = 1;dat=1;/*读取ds18b20当前温度*/void ReadTemp(void)unsigned char a=0;unsigned char b=0;unsigned char t=0;Init_DS18B20();WriteOneChar(0xCC); / 跳过读序号列号的操作WriteOneChar(0x44); / 启动温度转换delay_18B20(100); / this message is wery importantInit_D
19、S18B20();WriteOneChar(0xCC); /跳过读序号列号的操作WriteOneChar(0xBE); /读取温度寄存器等（共可读9个寄存器） 前两个就是温度delay_18B20(100);a=ReadOneChar(); /读取温度值低位b=ReadOneChar(); /读取温度值高位temp_value=b4;void temp_to_str() /温度数据转换成液晶字符显示TempBuffer0=temp_value/10+0; /十位TempBuffer1=temp_value%10+0; /个位TempBuffer2=0xdf; /温度符号TempBuffer3=
20、C;TempBuffer4=0;void naoz() if(hide_h2) nao0=h/10+0; nao1=h%10+0;elsenao0= ; nao1= ; nao2=:;if(hide_f2) nao3=f/10+0; nao4=f%10+0;elsenao3= ;nao4= ; nao5=:;if(hide_m2) nao6=m/10+0; nao7=m%10+0;else nao6= ; nao7= ; nao8=0;void Delay1ms(unsigned int count)unsigned int i,j;for(i=0;icount;i+)for(j=0;j0;d
21、elay-)for(i=0;i0x59) /超过59秒,清零temp=0;break;case 2:temp=Read1302(DS1302_MINUTE); /读取分数temp=temp+1; /分数加1up_flag=1;if(temp=0)music();delay(2);if(temp0x59) /超过59分,清零temp=0;break;case 3:temp=Read1302(DS1302_HOUR); /读取小时数temp=temp+1; /小时数加1up_flag=1;if(temp0x23) /超过23小时,清零temp=0;break;case 4:temp=Read130
22、2(DS1302_WEEK); /读取星期数temp=temp+1; /星期数加1up_flag=1;if(temp0x7)temp=1;break;case 5:temp=Read1302(DS1302_DAY); /读取日数temp=temp+1; /日数加1up_flag=1;if(temp0x31)temp=1;break;case 6:temp=Read1302(DS1302_MONTH); /读取月数temp=temp+1; /月数加1up_flag=1;if(temp0x12)temp=1;break;case 7:temp=Read1302(DS1302_YEAR); /读取年
23、数temp=temp+1; /年数加1up_flag=1;if(temp0x85)temp=0;break;default:break;while(Up=0);void Upkey1()/升序按键Up=1;if(Up=0)mdelay(8);switch(count)case 1:m=m+1; /秒数加1up_flag=1; /数据调整后更新标志if(m59) /超过59秒,清零m=0;break;case 2:f=f+1; /分数加1up_flag=1;if(f59) /超过59分,清零f=0;break;case 3:h=h+1; /小时数加1up_flag=1;if(h23) /超过23
24、小时,清零h=0;break;default:break;while(Up=0);/ void Downkey()/降序按键Down=1;if(Down=0)mdelay(8);switch(count)case 1:temp=Read1302(DS1302_SECOND); /读取秒数temp=temp-1; /秒数减1down_flag=1; /数据调整后更新标志if(temp=0x7f) /小于0秒,返回59秒temp=0x59;break;case 2:temp=Read1302(DS1302_MINUTE); /读取分数temp=temp-1; /分数减1down_flag=1;if
25、(temp=-1)temp=0x59; /小于0秒,返回59秒break;case 3:temp=Read1302(DS1302_HOUR); /读取小时数temp=temp-1; /小时数减1down_flag=1;if(temp=-1)temp=0x23;break;case 4:temp=Read1302(DS1302_WEEK); /读取星期数temp=temp-1; /星期数减1down_flag=1;if(temp=0)temp=0x7;break;case 5:temp=Read1302(DS1302_DAY); /读取日数temp=temp-1; /日数减1down_flag=
26、1;if(temp=0)temp=31;break;case 6:temp=Read1302(DS1302_MONTH); /读取月数temp=temp-1; /月数减1down_flag=1;if(temp=0)temp=12;break;case 7:temp=Read1302(DS1302_YEAR); /读取年数temp=temp-1; /年数减1down_flag=1;if(temp=-1)temp=0x85;break;default:break;while(Down=0);void Downkey1()/降序按键Down=1;if(Down=0)mdelay(8);switch(
27、count)case 1:m=m-1; /秒数减1down_flag=1; /数据调整后更新标志if(m=0) /小于0秒,返回59秒m=59;break;case 2:f=f-1; /分数减1down_flag=1;if(f=-1)f=59; /小于0秒,返回59秒break;case 3:h=h-1; /小时数减1down_flag=1;if(h=-1)h=23;break;default:break;while(Down=0);void Setkey()/模式选择按键Set=1;if(Set=0)mdelay(8);count=count+1; /Setkey按一次,count就加1done=1; /进入调整模式while
