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#include<AT89C52.H> #include<INTRINS.H> #define TIME (0X10000-50000) #define FLAG 0XEF //闹钟标志 //引脚连接图 sbit rst=P3^5; sbit clk=P3^4; sbit dat=P3^3; sbit rs=P1^5; sbit rw=P1^6; sbit e=P1^7; sbit DQ=P1^4; //温度输入口 sbit ACC_7=ACC^7; //全局变量及常量定义 unsigned char i=20,j,time1[16]; unsigned char alarm[2],time2[15],time[3]; unsigned char code Day[]={31,28,31,30,31,30,31,31,30,31,30,31};//12个月的最大日期(非闰年) //音律表 unsigned int code table1[]={64260,64400,64524,64580,64684,64777, 64820,64898,64968,65030,65058,65110,65157,65178,65217}; //发声部分的延时时间 unsigned char code table2[]={0x82,1,0x81,0xf4,0xd4,0xb4,0xa4, 0x94,0xe2,1,0xe1,0xd4,0xb4,0xc4,0xb4,4,0}; //LCD自建字 unsigned char code tab[]={0x18,0x1b,5,4,4,5,3,0, 0x08,0x0f,0x12,0x0f,0x0a,0x1f,0x02,0x02,//年 0x0f,0x09,0x0f,0x09,0x0f,0x09,0x11,0x00,//月 0x0f,0x09,0x09,0x0f,0x09,0x09,0x0f,0x00};//日 //*******温度小数部分用查表法**********// unsigned char code ditab[16]={0x00,0x01,0x01,0x02,0x03,0x03,0x04,0x04,0x05,0x06,0x06,0x07,0x08,0x08,0x09,0x09}; //闹钟中用的全局变量 unsigned char th1,tl1; unsigned char temp_data[2]={0x00,0x00}; // 读出温度暂放 bit flag; //18b20存在标志位 /***********11微秒延时函数**********/ delay(unsigned int t) { for(;t>0;t--); } /***********18B20复位函数**********/ RST18B20(void) { unsigned char i; DQ=1;_nop_();_nop_(); DQ=0; // delay(50); // 550us DQ=1; // delay(6); // 66us for(i=0;i<0x30;i++) { if(!DQ) goto d1; } flag=0; //清标志位,表示ds1820不存在 DQ=1; return; d1: delay(45); //延时500us flag=1; DQ=1; //置标志位,表示ds1820存在 } /**********18B20写命令函数*********/ //向 1-WIRE 总线上写一个字节 void Write1Byte18B20(unsigned char val) { unsigned char i; for (i=8; i>0; i--) // { DQ=1;_nop_();_nop_(); DQ=0;_nop_();_nop_();_nop_();_nop_();_nop_();//5us DQ=val&0x01; //最低位移出 delay(6); //66us val=val/2; //右移一位 } DQ=1; delay(1); } /*********18B20读1个字节函数********/ //从总线上读取一个字节 unsigned char Read1Byte18B20(void) { unsigned char i; unsigned char value=0; for (i=8;i>0;i--) { DQ=1;_nop_();_nop_(); value>>=1; DQ=0; // _nop_();_nop_();_nop_();_nop_(); //4us DQ=1;_nop_();_nop_();_nop_();_nop_(); //4us if(DQ) value|=0x80; delay(6); //66us } DQ=1; return(value); } /***********读出温度函数**********/ Read18B20() { RST18B20(); //总线复位 if(!flag) //判断ds1820是否存在?若ds18b20不存在则返回 return; //Write1Byte18B20(0xCC); // Skip ROM //Write1Byte18B20(0x44); // 发转换命令 //delay(70); Write1Byte18B20(0xCC); //发Skip ROM命令 Write1Byte18B20(0xBE); //发读命令 temp_data[0]=Read1Byte18B20(); //温度低8位 temp_data[1]=Read1Byte18B20(); //温度高8位 RST18B20(); Write1Byte18B20(0xCC); // Skip ROM Write1Byte18B20(0x44); // 发转换命令 } /***********温度数据处理函数**********/ DealTempData() { unsigned char n=0,m; if(temp_data[1]>127)//负温度求补码 { temp_data[1]=(256-temp_data[1]); temp_data[0]=(256-temp_data[0]); n=1; } time2[13]=ditab[temp_data[0]&0x0f]+'0'; time2[12]='.'; m=((temp_data[0]&0xf0)>>4)|((temp_data[1]&0x0f)<<4);// if(n) { m-=16; } time2[9]=m/100+'0'; time2[11]=m%100; time2[10]=time2[11]/10+'0'; time2[11]=time2[11]%10+'0'; if(time2[9]=='0')//最高位为0时都不显示 { time2[9]=0x20; if(n)//负温度时最高位显示"-" { time2[9]='-'; } if(time2[10]=='0') { if(n) { time2[10]='-'; time2[9]=0x20; } else time2[10]=0x20; if(time2[11]=='0'&&time2[13]=='0') time2[11]=time2[12]=0x20; } } } delay1ms(unsigned char time) //延时1ms { unsigned char i,j; for(i=0;i<time;i++) { for(j=0;j<250;j++); } } //使能1602 EnableLCD() { rs=0; rw=0; e=0; delay1ms(3); e=1; } //写LCD函数 WriteLCD(unsigned char i) { P0=i; rs=1; rw=0; e=0; delay1ms(2); e=1; } //写LCD内部地址函数 WriteLCDRAM(unsigned char data *address,m) { unsigned char i,j; for(i=0;i<m;i++,address++) { j=*address; WriteLCD(j); } } //LCD显示 LCDSHOW() { P0=0XC; //显示器开、光标关 EnableLCD(); P0=0x80; //写入显示起始地址 EnableLCD(); WriteLCDRAM(time1,16); P0=0xc1; //写入显示起始地址 EnableLCD(); WriteLCDRAM(time2,15); } //自建字函数库 DesignHZ() { unsigned char i; P0=0x40; EnableLCD(); for(i=0;i<32;i++) { WriteLCD(tab[i]); delay1ms(2); } } //写DS1302子程序 WriteDS1302(unsigned char address) { unsigned char i; clk=0; _nop_(); rst=1; _nop_(); for(i=0;i<8;i++) { dat=address&1; _nop_(); clk=1; address>>=1; clk=0; } } //读DS1302子程序 unsigned char ReadDS1302() { unsigned char i,j=0; for(i=0;i<8;i++) { j>>=1; _nop_(); clk=0; _nop_(); if(dat) j|=0x80; _nop_(); clk=1; } return(j); } //部分显示数据初始化 TimeInit() { time1[1]=time1[13]=time2[8]=time2[9]=time2[10]=0x20,time2[14]=0; time1[6]=1,time1[9]=2,time1[12]=3,time1[2]='2',time1[3]='0'; time1[14]='W',time2[2]=time2[5]=':'; WriteDS1302(0xc1); alarm[0]=ReadDS1302(); rst=0; WriteDS1302(0xc3); alarm[1]=ReadDS1302(); rst=0; WriteDS1302(0xc5); time1[0]=ReadDS1302(); rst=0; } //读取时间 ReadTime() { unsigned char i,m,n; WriteDS1302(0x8d); //读取年份 m=ReadDS1302(); rst=0; time1[4]=m/16+0x30; time1[5]=m%16+0x30; WriteDS1302(0x8b); //读取星期 m=ReadDS1302(); rst=0; time1[15]=m+0x30; for(i=7,n=0x89;i<11;i+=3,n-=2) //读取月份和日期 { WriteDS1302(n); m=ReadDS1302(); rst=0; time1[i]=m/16+0x30; time1[i+1]=m%16+0x30; } for(m=0,i=0,n=0x85;i<7;i+=3,n-=2,m++) //读取时,分,秒 { WriteDS1302(n); time[m]=ReadDS1302(); rst=0; time2[i]=time[m]/16+0x30; time2[i+1]=time[m]%16+0x30; } } time0() interrupt 1 using 1 { i--; if(i==0) { if(j!=0) j--; i=20; } TH0=TIME/256,TL0=TIME%256; } //闹钟部分 intime1() interrupt 3 { TH1=th1,TL1=tl1; P3_2=!P3_2; } //显示闹钟设置数据 showalarm() { unsigned char i,j,a,b,n; ET1=1; for(j=0;j<6;j++) { i=0; while(1) { a=table2[i]; if(a==0) break; b=a&0xf; a>>=4; if(a==0) { TR1=0; goto D1; } a=((--a)<<1)/2; TH1=th1=table1[a]/256,TL1=tl1=table1[a]%256; TR1=1; D1: do { b--; for(n=0;n<3;n++) { ReadTime(); LCDSHOW(); P2=0xf7; if(P2==0xe7) { delay1ms(100); if(P2==0xe7) { TR1=0; ET1=0; return; } } } }while(b!=0); i++; } TR1=0; } ET1=0; } //根据日期的变动自动调整星期 unsigned char setweek() { unsigned char i=5,j,n; j=(time1[4]&0xf)*10+(time1[5]&0xf); n=j/4; i=i+5*n; n=j%4; if(n==1) i+=2; else if(n==2) i+=3; else if(n==3) i+=4; j=(time1[7]&0xf)*10+(time1[8]&0xf); if(j==2) i+=3; else if(j==3) i+=3; else if(j==4) i+=6; else if(j==5) i+=1; else if(j==6) i+=4; else if(j==7) i+=6; else if(j==8) i+=2; else if(j==9) i+=5; else if(j==11) i+=3; else if(j==12) i+=5; if(n==0) if(j>2) i++; j=(time1[10]&0xf)*10+(time1[11]&0xf); i+=j; i%=7; if(i==0) i=7; return(i); } //设置时间 settime() { unsigned char i=0x85,year,month,day,n; time2[6]=time2[7]=0x30,time1[14]=time1[15]=0x20; LCDSHOW(); while(1) { P0=0xe; //显示器开、光标开 EnableLCD(); P0=i; //定光标 EnableLCD(); P2=0xf7; if(P2!=0XF7) { delay1ms(100); //延时0.1s去抖动 if(P2!=0XF7) { j=7; if(P2==0X77) { i+=3; if(i==0x8e) i=0xc2; else if(i>0xc5) i=0x85; } else if(P2==0xb7) { year=(time1[4]&0xf)*10+(time1[5]&0xf); month=(time1[7]&0xf)*10+(time1[8]&0xf); day=(time1[10]&0xf)*10+(time1[11]&0xf); if(i==0x85) { year++; if(year>99) year=0; if((year%4)!=0) if(month==2&&day==29) day=28; } else if(i==0x88) { month++; if(month>12) month=1; if(day>Day[month-1]) { day=Day[month-1]; if(month==2&&(year%4)==0) day=29; } } else if(i==0x8b) { day++; if(day>Day[month-1]) { if(month==2&&(year%4)==0) { if(day>29) day=1; } if(month!=2) day=1; } } else if(i==0xc2) { n=(time2[0]&0xf)*10+(time2[1]&0xf); n++; if(n>23) n=0; time2[0]=n/10+0x30; time2[1]=n%10+0x30; } else { n=(time2[3]&0xf)*10+(time2[4]&0xf); n++; if(n>59) n=0; time2[3]=n/10+0x30; time2[4]=n%10+0x30; } time1[4]=year/10+0x30; time1[5]=year%10+0x30; time1[7]=month/10+0x30; time1[8]=month%10+0x30; time1[10]=day/10+0x30; time1[11]=day%10+0x30; LCDSHOW(); } else if(P2==0xd7) { WriteDS1302(0x8c); WriteDS1302((time1[4]&0xf)*16+(time1[5]&0xf)); rst=0; WriteDS1302(0x8a); WriteDS1302(setweek()); rst=0; for(i=7,n=0x88;i<11;i+=3,n-=2) { WriteDS1302(n); WriteDS1302((time1[i]&0xf)*16+(time1[i+1]&0xf)); rst=0; } for(i=0;i<7;i+=3,n-=2) { WriteDS1302(n); WriteDS1302((time2[i]&0xf)*16+(time2[i+1]&0xf)); rst=0; } TR0=0; time1[14]='W'; return; } else { TR0=0; time1[14]='W'; return; } } } if(j==0) { TR0=0; time1[14]='W'; return; } } } //设置闹钟 setalarm() { unsigned char i,n; for(i=1;i<16;i++) { time1[i]=0x20; } time2[0]=alarm[0]/16+0x30; time2[1]=(alarm[0]&0xf)+0x30; time2[3]=alarm[1]/16+0x30; time2[4]=(alarm[1]&0xf)+0x30; time2[6]=time2[7]=0x30; LCDSHOW(); i=0xc2; while(1) { P0=0xe; //显示器开、光标开 EnableLCD(); P0=i; //定光标 EnableLCD(); P2=0xf7; if(P2!=0XF7) { delay1ms(100); //延时0.1s去抖动 if(P2!=0XF7) { j=7; if(P2==0X77) { i+=3; if(i>0xc5) i=0xc2; } else if(P2==0xb7) { if(i==0xc2) { n=(time2[0]&0xf)*10+(time2[1]&0xf); n++; if(n>23) n=0; time2[0]=n/10+0x30; time2[1]=n%10+0x30; } else { n=(time2[3]&0xf)*10+(time2[4]&0xf); n++; if(n>59) n=0; time2[3]=n/10+0x30; time2[4]=n%10+0x30; } LCDSHOW(); } else if(P2==0xd7) { WriteDS1302(0xc0); WriteDS1302((time2[0]&0xf)*16+(time2[1]&0xf)); rst=0; WriteDS1302(0xc2); WriteDS1302((time2[3]&0xf)*16+(time2[4]&0xf)); rst=0; time1[0]=FLAG; WriteDS1302(0xc4); WriteDS1302(time1[0]); rst=0; TR0=0; TimeInit(); return; } else { TR0=0; TimeInit(); return; } } } if(j==0) { TR0=0; TimeInit(); return; } } } main() { IE=0X82; TMOD=0x11; WriteDS1302(0x8E); //禁止写保护 WriteDS1302(0); rst=0; P0=1; //清屏并光标复位 EnableLCD(); P0=0X38; //设置显示模式:8位2行5x7点阵 EnableLCD(); P0=6; //文字不动,光标自动右移 EnableLCD(); DesignHZ(); //自建字 TimeInit(); while(1) { ReadTime(); //读取时间 Read18B20(); //读出18B20温度数据 DealTempData(); //处理温度数据 LCDSHOW(); //显示时间 if(time1[0]!=0x20) if(time[0]==alarm[0]) if(time[1]==alarm[1]) if(time[2]==0) showalarm(); P2=0xf7; if((P2&0XF0)!=0XF0) { delay1ms(100); //延时0.1s去抖动 if((P2&0XF0)!=0XF0) { j=7; TH0=TIME/256,TL0=TIME%256; TR0=1; if(P2==0x77) { settime(); } else if(P2==0XB7) { setalarm(); } else if(P2==0XD7) { TR0=0; if(time1[0]==FLAG) time1[0]=0x20; else time1[0]=FLAG; WriteDS1302(0xc4); WriteDS1302(time1[0]); rst=0; } } } delay1ms(100); } } |
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