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電路圖如圖
對(duì)房間溫度濕度采集顯示,并且控制,啟動(dòng)壓縮機(jī)
單片機(jī)源程序如下:
- /****************************************************************
- 聲明:本程序僅供大家參考學(xué)習(xí),未經(jīng)本人同意禁止用于商業(yè)用途。
- ***************************************************************/
- #include <reg52.h>
- #define uint unsigned int
- #define uchar unsigned char
- #include <intrins.h>
- typedef bit BOOL ;
- sbit io = P1^1 ;//(口線定義)
- sbit bee=P1^0;
- sbit rs = P2^5 ;
- sbit rw = P2^6 ;
- sbit ep = P2^7 ;
- bit flag_300ms ;
- sbit K1=P1^2;
- sbit K2=P1^3;
- sbit K3=P1^4;
- uchar yemian=0;//(定義變量)
- uchar flat=1;
- uchar data_byte;
- uchar RH,RL,TH,TL;
- uchar WenDu,ShiDu;//報(bào)警的溫度和濕度
- #include "eeprom52.h"
- /****************************延時(shí)程序****************************/
- void delay(uchar ms)
- { // 延時(shí)子程序
- uchar i ;
- while(ms--)
- {
- for(i = 0 ; i<250;i++) ;
- }
- }
- void delay1()//延時(shí)10us
- {
- uchar i;
- i--;
- i--;
- i--;
- i--;
- i--;
- i--;
- }
- void longdelay(uchar s) //長(zhǎng)延時(shí)
- {
- while(s--)
- {
- delay(20) ;
- }
- }
- /******************把數(shù)據(jù)保存到單片機(jī)內(nèi)部eeprom中******************/
- void write_eeprom()
- {
- SectorErase(0x2000);
- byte_write(0x2000, WenDu);
- byte_write(0x2001, ShiDu);
- byte_write(0x2060, a_a);
- }
- /******************把數(shù)據(jù)從單片機(jī)內(nèi)部eeprom中讀出來(lái)*****************/
- void read_eeprom()
- {
- WenDu = byte_read(0x2000);
- ShiDu = byte_read(0x2001);
- a_a = byte_read(0x2060);
- }
- /**************開(kāi)機(jī)自檢eeprom初始化*****************/
- void init_eeprom()
- {
- read_eeprom(); //先讀
- if(a_a != 2) //新的單片機(jī)初始單片機(jī)內(nèi)問(wèn)eeprom
- {
- WenDu = 30;
- ShiDu = 80;
- a_a = 2;
- write_eeprom();
- }
- }
- /********************報(bào)警程序部分*******************/
- void warn() //報(bào)警函數(shù)
- {
-
- if(TH>=WenDu) //檢測(cè)的溫度高于設(shè)定溫度報(bào)警值
-
- {
- bee=0; //報(bào)警
-
- }
-
- if(RH>=ShiDu) //檢測(cè)的濕度高于設(shè)定的濕度值
-
- {
- bee=0; //報(bào)警
- }
-
- if( TH<WenDu && RH<ShiDu )
- {
- bee=1; //停止報(bào)警
- }
-
-
- }
- /************************LCD模塊******************************************/
- BOOL lcd_bz()//測(cè)試LCD忙碌狀態(tài)
- {
- BOOL result ;
- rs = 0 ;
- rw = 1 ;
- ep = 1 ;
- result = (BOOL)(P0 & 0x80) ;
- ep = 0 ;
- return result ;
- }
- void write_cmd(uchar cmd)// 寫(xiě)指令
- {
- while(lcd_bz()) ;
- rs = 0 ;
- rw = 0 ;
- ep = 0 ;
- P0 = cmd ;
- ep = 1 ;
- ep = 0 ;
- }
- void write_addr(uchar addr)//寫(xiě)地址
- {
- write_cmd(addr|0x80) ;
- }
- void write_byte(uchar dat)//寫(xiě)字節(jié)
- {
- while(lcd_bz()) ;
- rs = 1 ;
- rw = 0 ;
- ep = 0 ;
- P0 = dat ;
- ep = 1 ;
- ep = 0 ;
- }
- void lcd_init()// 初始化
- {
- write_cmd(0x38) ;
- delay(1);
- write_cmd(0x08) ;
- delay(1);
- write_cmd(0x01) ;
- delay(1);
- write_cmd(0x06) ;
- delay(1);
- write_cmd(0x0c) ;
- delay(1);
- }
- void display(uchar addr, uchar q)//在某一地址上顯示一字節(jié)
- {
- delay(1) ;
- write_addr(addr) ;
- write_byte(q) ;
- delay(1) ;
-
- }
- /*********************** DHT11測(cè)試模塊***************************************/
- void start()//開(kāi)始信號(hào)
- {
- io=1;
- delay1();
- io=0;
- delay(20);//>18ms
- io=1;
- delay1();//20-40us
- delay1();
- delay1();
- delay1();
- delay1();
- }
- uchar receive_byte()//接收一個(gè)字節(jié)
- {
- uchar i,temp,count;
- for(i=0;i<8;i++)
- {
- temp=0;
- delay1();delay1();delay1();delay1();
- if(io==1)temp=1;
- count=2;
- while((io)&&count++);
- if(count==1)break;
- data_byte<<=1;
- data_byte|=temp;
- }
- return data_byte;
- }
- void receive()//接收數(shù)據(jù)
- {
- uchar T_H,T_L,R_H,R_L,check,num_check;
- uchar count;
- start();//開(kāi)始信號(hào)
- io=1;
- if(!io)//讀取DHT11響應(yīng)信號(hào)
- {
-
- while((io)&&count++);
- R_H=receive_byte();
- R_L=receive_byte();
- T_H=receive_byte();
- T_L=receive_byte();
- check=receive_byte();
- io=0;//拉低延時(shí)50us
- delay1();delay1();delay1();delay1();delay1();
- io=1;
- num_check=R_H+R_L+T_H+T_L;
- if(num_check=check)
- {
- RH=R_H;
- RL=R_L;
- TH=T_H;
- TL=T_L;
- check=num_check;
- }
- }
- }
- void showw() // 問(wèn)候語(yǔ)函數(shù)
- {
- lcd_init(); //初始化
- delay(10);
-
- display(0x05,'W');
- display(0x06,'e');
- display(0x07,'l');
- display(0x08,'c');
- display(0x09,'o');
- display(0x0a,'m');
- display(0x0b,'e');
- delay(250); //短暫延時(shí)
- delay(250);
- delay(250);
-
- /*********************************/
- /*
- display(0x40,' ') ;
- display(0x41,'h');
- display(0x42,'e');
-
- */
- }
- /*************定時(shí)器0初始化程序***************/
- void time_init()
- {
- EA = 1; //開(kāi)總中斷
- TMOD = 0X01; //定時(shí)器0、定時(shí)器1工作方式1
- ET0 = 1; //開(kāi)定時(shí)器0中斷
- TR0 = 1; //允許定時(shí)器0定時(shí)
- }
- void key() //按鍵程序 選擇菜單模式
- {
-
- if(!K1)
- {
- delay(20);
- if(!K1)
- {
- while(!K1)
- ;
- yemian++;
- flat++;
- if(yemian>=3) { yemian=0; }
-
- }
- }
-
-
-
- }
- shezhi() //對(duì)里面的數(shù)值進(jìn)行修改
- {
- if(!K2)
- {
- delay(50);
- if(!K2)
- {
- ;
-
- if(yemian==1)
- {
- WenDu+=1;
- if(WenDu>99) { WenDu=99; } //濕度上限加
- }
-
- if(yemian==2)
- {
- ShiDu+=1;
- if(ShiDu>99) { ShiDu=99; } //濕度下限加
- }
-
- write_eeprom(); //保存數(shù)據(jù)
- }
- }
-
- if(!K3)
- {
- delay(50);
- if(!K3)
- {
-
- ;
- if(yemian==1)
- {
- WenDu-=1; //濕度下限減
- if(WenDu<1) {WenDu=1; }
- }
-
- if(yemian==2)
- {
- ShiDu-=1; //濕度下限減
- if(ShiDu<1) { ShiDu=1; }
- }
- write_eeprom(); //保存數(shù)據(jù)
- }
- }
- }
- /***************************主程序*********************************/
- void main()
- {
- init_eeprom(); //讀eeprom數(shù)據(jù)
- time_init(); //初始化定時(shí)器
- showw(); //顯示問(wèn)候語(yǔ) 和名字
-
- while(1)
- {
-
- key();
- //====================yemian==0時(shí) 進(jìn)入工作狀態(tài)=================================
- if(yemian==0)
- {
- if(flat==1)
- {
- flat=0;
- lcd_init(); //初始化
-
- display(0x00,'T') ; //Temp
- display(0x01,'e');
- display(0x02,'m');
- display(0x03,'p');
- display(0x04,':');
-
- display(0x08,0xdf); // 度
- display(0x09,'C');
-
-
- display(0x40,'H') ; //Humi
- display(0x41,'u');
- display(0x42,'m');
- display(0x43,'i');
- display(0x44,':');
-
- display(0x47,'%');
- display(0x48,'R');
- display(0x49,'H');
-
- display(0x0c,'T');
- display(0x0d,':');
- display(0x0e,WenDu/10+0x30); //報(bào)警溫度
- display(0x0f,WenDu%10+0x30);
-
- display(0x4c,'H');
- display(0x4d,':');
- display(0x4e,ShiDu/10+0x30); //報(bào)警濕度
- display(0x4f,ShiDu%10+0x30);
-
- }
-
- if(flag_300ms == 1)
- {
- flag_300ms = 0;
- receive();
-
- display(0x05,TH/10+0x30); //溫度顯示
- display(0x06,TH%10+0x30);
-
- display(0x45,RH/10+0x30); //濕度顯示
- display(0x46,RH%10+0x30);
-
-
- warn();
- }
-
- }
-
- //====================yemian==1 溫度設(shè)置===========================
- if(yemian==1) //溫度
- {
- ……………………
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