基于單片機(jī)的多路溫度檢測系統(tǒng)設(shè)計(jì)

#include<reg51.h>#defineuintunsignedint#defineucharunsignedcharsbitlcdrs=P3^0;sbitlcdrw=P3^1;sbitlcden=P3^2;//LCD選通線sbitDQ=P1^7;//18B20引腳uintvalue;//溫度值sbitsound=P1^6;//蜂鳴器sbitwarning=P3^5;//LED報(bào)警燈sbitgreenled=P3^6;//LED報(bào)警燈sbitk1=P1^0;//setsbitk2=P1^1;//+sbitk3=P1^2;//-charmax=40;//初始溫度最大值charmin=10;//初始溫度最小值ucharchange_flag;//按鍵次數(shù)ucharcodetable1[]={0x28,0x30,0xc5,0xb8,0x00,0x00,0x00,0x8e};//rom1測得旳序列號ucharcodetable2[]={0x28,0x31,0xc5,0xb8,0x00,0x00,0x00,0xb9};//rom2ucharcodetable3[]={0x28,0x32,0xc5,0xb8,0x00,0x00,0x00,0xe0};//rom3ucharcodetable4[]={0x28,0x33,0xc5,0xb8,0x00,0x00,0x00,0xd7};//rom4ucharcodetable5[]="Temple";ucharcodetable6[]="max:min:";uinttemper[5];//溫度值緩存bitfg=0;//溫度正負(fù)標(biāo)志voiddelay(uintn){uintx,y;for(x=n;x>0;x--)for(y=110;y>0;y--);}voidwrite_com(ucharcom){ lcdrs=0; //rs=0時輸入指令 P2=com; delay(5); lcden=1; //en=1時讀取信息 delay(5); lcden=0; //1->0執(zhí)行指令}voidwrite_dat(uchardat){ lcdrs=1; //rs=1時輸入數(shù)據(jù) P2=dat; delay(5); lcden=1; delay(5); lcden=0;}voidinit_lcd(){ lcden=0; lcdrw=0; write_com(0x38); //8位數(shù)據(jù)，雙列，5*7字形 write_com(0x0c); //啟動顯示屏，關(guān)光標(biāo)，光標(biāo)不閃爍 write_com(0x06); //顯示地址遞增，即寫一種數(shù)據(jù)后，顯示位置右移一位 write_com(0x01);}voiddelay_us(uchart)//微妙延時{ while(t--);}voidinit_ds18b20() //數(shù)據(jù)初始化{ DQ=1; delay_us(4); DQ=0; delay_us(80); DQ=1; delay_us(200);}voidwrite_ds18b20(uchardat)//寫數(shù)據(jù){ uchari; for(i=0;i<8;i++) { DQ=0; DQ=dat&0x01; delay_us(15); DQ=1; dat=dat>>1; } delay_us(10);}ucharread_ds18b20()//讀數(shù)據(jù){ uchari=0,readat=0; for(i=0;i<8;i++) { DQ=0; readat=readat>>1;//八位所有都是0，向右移一位后，仍然全是0 DQ=1; if(DQ)//假如DQ為1，readat進(jìn)行或運(yùn)算，假如為0，則子語句不執(zhí)行，直接for循環(huán)此時采集旳數(shù)據(jù)是0 readat=readat|0x80;//此時最高位為1 ，然后再進(jìn)行for循環(huán)最高位成為第七位，依次往復(fù) delay_us(10); } returnreadat;}voidcheck_rom(uchara) //匹配序列號{ ucharj; write_ds18b20(0x55); if(a==1) { for(j=0;j<8;j++) { write_ds18b20(table1[j]); } } if(a==2) { for(j=0;j<8;j++) { write_ds18b20(table2[j]); } } if(a==3) { for(j=0;j<8;j++) { write_ds18b20(table3[j]); } } if(a==4) { for(j=0;j<8;j++) { write_ds18b20(table4[j]); } }}uintchange_ds18b20(ucharz)//為DS18B20序號{ uchartl,th; init_ds18b20(); //初始化 write_ds18b20(0xcc);//跳過 init_ds18b20(); if(z==1) { check_rom(1); // 匹配rom1 } if(z==2) { check_rom(2); // 匹配rom2 } if(z==3) { check_rom(3); // 匹配rom3 } if(z==4) { check_rom(4); // 匹配rom4 } write_ds18b20(0x44); init_ds18b20(); write_ds18b20(0xcc); init_ds18b20(); if(z==1) { check_rom(1); // } if(z==2) { check_rom(2); // } if(z==3) { check_rom(3); // } if(z==4) { check_rom(4); // } write_ds18b20(0xbe);//啟動讀暫存器。讀內(nèi)部ram中9字節(jié)溫度數(shù)據(jù) tl=read_ds18b20(); th=read_ds18b20(); value=th; value=value<<8; value=value|tl; if(th<0x80) { fg=0;} if(th>=0x80) { fg=1; value=~value+1; } value=value*(0.0625*10); returnvalue;}voiddisplay_lcd1602(ucharz)//顯示各個溫度{ uchari; if(z==1) { write_com(0x80); for(i=0;i<6;i++) { write_dat(table5[i]); delay(3); } write_dat(0x2d); write_dat(0x41); write_dat(0x3a); if(fg==1) { write_dat(0xb0); } if(fg==0) { write_dat(0x20); } write_dat(value/100+0x30); write_dat(value%100/10+0x30); write_dat(0x2e); write_dat(value%10+0x30); write_dat(0xdf); write_dat(0x43); } if(z==2) { write_com(0x80); for(i=0;i<6;i++) { write_dat(table5[i]); delay(3); } write_dat(0x2d); write_dat(0x42); write_dat(0x3a); if(fg==1) { write_dat(0xb0); } if(fg==0) { write_dat(0x20); } write_dat(value/100+0x30); write_dat(value%100/10+0x30); write_dat(0x2e); write_dat(value%10+0x30); write_dat(0xdf); write_dat(0x43); }if(z==3) { write_com(0x80); for(i=0;i<6;i++) { write_dat(table5[i]); delay(3); } write_dat(0x2d); write_dat(0x43); write_dat(0x3a); if(fg==1) { write_dat(0xb0); } if(fg==0) { write_dat(0x20); } write_dat(value/100+0x30); write_dat(value%100/10+0x30); write_dat(0x2e); write_dat(value%10+0x30); write_dat(0xdf); write_dat(0x43); } if(z==4) { write_com(0x80); for(i=0;i<6;i++) { write_dat(table5[i]); delay(3); } write_dat(0x2d); write_dat(0x44); write_dat(0x3a); if(fg==1) { write_dat(0xb0); } if(fg==0) { write_dat(0x20); } write_dat(value/100+0x30); write_dat(value%100/10+0x30); write_dat(0x2e); write_dat(value%10+0x30); write_dat(0xdf); write_dat(0x43); }}voidlcd_set_mun()//顯示設(shè)置菜單{ uchari; write_com(0x80); for(i=0;i<16;i++) { write_dat(table6[i]); delay(3); }}voidlcd_set(charmax,charmin)//顯示最大最小值{ ucharx1,x2,x3,x4;ucharflag_max,flag_min; if(max<0) { flag_max=1; max=-max; } else flag_max=0; if(min<0) { flag_min=1; min=-min; } else flag_min=0;x1=max/10; x2=max%10; x3=min/10;x4=min%10; write_com(0x80+0x40+0x03); if(flag_max==1)write_dat('-'); elsewrite_dat('');write_dat(x1+0x30);write_dat(x2+0x30); write_com(0x80+0x40+0x0b);if(flag_min==1)write_dat('-'); elsewrite_dat('');write_dat(x3+0x30);write_dat(x4+0x30);}voidkey1(){ if(k1==0){ change_flag++;if(change_flag>2)change_flag=0;}while(k1==0);}voidkey2(){ if(k2==0){ if(change_flag==1)max++; if(change_flag==2)min++;}while(k2==0);}voidkey3(){ if(k3==0){if(change_flag==1)max--;if(change_flag==2)min--;}while(k3==0);}voidkey()//按鈕{key2(); key1(); key3();}voidalarm(uintt){ inttt;//t是溫度絕對值，tt是有符號數(shù)，需要轉(zhuǎn)換 t=t*0.1; if(fg==0)//正溫度 { tt=t; } if(fg==1) //負(fù)溫度 { tt=~t+1; } if(tt>max) { sound=0; warning=1; green