51单片机+温湿度传感器+proteus仿真

#include<reg51.h> #include<intrins.h> //包含所需要的机械延时 #define uint unsigned int #define uchar unsigned char /******************************* *********dht22相关配置********** ***只需要直接调用数据接收函数**** *******************************/ sbit DA=P2^4; //数据接受地址 unsigned char DHT22_init(); unsigned char ReadTH(); unsigned char ReadTL(); unsigned char ReadHH(); unsigned char ReadHL(); static int THmax_val=35; static int THmin_val=10; static int RHmax_val=70; static int RHmin_val=30; int T; int H; int temp1; int temp2; unsigned char TL; //储存暂存器的温度低位 unsigned char TH; //储存暂存器的温度高位 unsigned char HL; unsigned char HH; sbit LED1=P1^1; sbit LED2=P1^2; sbit LED3=P1^3; /*****LCD1602相关函数********* *RW接地即可，也可以配置为低电平* *只需简单延时即可，无需复杂操作* *****************************/ void write_com(uchar com); //写命令 void write_data(uchar date);//写数据 void lcd1602init(); void delay(unsigned int x_ms) ; void delayms(uint z); void delayus(uint n); sbit lcdrs=P2^5; sbit lcden=P2^7; sbit lcdrw=P2^6; int abc = 0; int bcd=0; /*********按键相关函数******/ sbit K1 = P1^7; sbit K2 = P1^6; sbit K3 = P1^5; sbit K4 = P1^4; void THmax(); void THmin(); void RHmax(); void RHmin(); /******* 定时器相关函数****/ void timer_init(); //定时器初始化 int aaa; /***********主函数**********/ void main() { delayms(500); timer_init(); lcd1602init(); //1602初始化 delayms(500); while(1) { if(K1 ==0) { while(1) { write_com(0x01); write_com(0x80); //第一行从开头写 write_data('T'); write_data('h'); write_data('r'); write_data('e'); write_data('s'); write_data('h'); write_data('o'); write_data('l'); write_data('d'); write_com(0x80+0x40); write_data('2'); write_data('.'); write_data('T'); write_data('H'); write_data(' '); write_data('3'); write_data('.'); write_data('R'); write_data('H'); write_data(' '); write_data('4'); write_data('.'); write_data('b'); write_data('a'); write_data('c'); write_data('k'); while((K2==1)&&(K3==1)&&(K4==1)); //如果是温度调节 if((K2==0)&&(K3==1)) { while(K2==0); while(1) { write_com(0x01); write_com(0x80); //第一行从开头写 write_data('2'); write_data('.'); write_data('T'); write_data('H'); write_data('m'); write_data('a'); write_data('x'); write_com(0x80+0x40); write_data('3'); write_data('.'); write_data('T'); write_data('H'); write_data('m'); write_data('i'); write_data('n'); write_com(0x80+0x40+9); write_data('4'); write_data('.'); write_data('b'); write_data('a'); write_data('c'); write_data('k'); while((K2==1)&&(K3==1)&&(K4==1)); //如果是温度最大值 if((K2==0)&&(K3==1)) { while(K2==0); THmax(); } //如果是温度最小值 if((K2==1)&&(K3==0)) { while(K3==0); THmin(); } //如果是退出 if((K4==0)) { while((K4==0)); break; } } } //如果是湿度调节 if((K2==1)&&(K3==0)) { while(K3==0); while(1) { write_com(0x01); write_com(0x80); //第一行从开头写 write_data('2'); write_data('.'); write_data('R'); write_data('H'); write_data('m'); write_data('a'); write_data('x'); write_com(0x80+0x40); write_data('3'); write_data('.'); write_data('R'); write_data('H'); write_data('m'); write_data('i'); write_data('n'); write_com(0x80+0x40+9); write_data('4'); write_data('.'); write_data('b'); write_data('a'); write_data('c'); write_data('k'); while((K2==1)&&(K3==1)&&(K4==1)); //如果是湿度阈值最大值 if((K2==0)&&(K3==1)) { while(K2==0); RHmax(); } // 如果是湿度阈值最小值 if((K2==1)&&(K3==0)) { while(K3==0); RHmin(); } // 如果是退出 if((K4==0)) { while((K4==0)); break; } } } //如果是退出 if(K4==0) { while(K4==0); write_com(0x01); break; } } } else if(K1!=0) { write_com(0x80); write_data('T'); write_data('H'); write_data(' '); write_data('0'+temp1/10/10); write_data('0'+temp1/10%10); write_data('.'); write_data('0'+temp1%10); write_data(' '); write_data(' '); write_data('R'); write_data('H'); write_data(' '); write_data('0'+temp2/10/10); write_data('0'+temp2/10%10); write_data('.'); write_data('0'+temp2%10); write_com(0x80+0x40); write_data('1'); write_data('.'); write_data('T'); write_data('h'); write_data('r'); write_data('e'); write_data('s'); write_data('h'); write_data('o'); write_data('l'); write_data('d'); if ((temp1>= (THmax_val*10))||(temp1< (THmin_val*10))) LED2=0; else LED2=1; if (((temp2)>=( RHmax_val*10))||(temp2< (RHmin_val*10))) LED3=0; else LED3=1; if(LED2==0||LED3==0) LED1=1; else LED1=0; } } } /*开始*/ /***********dht22相关子函数*************/ /*********LCD1602相关子函数**********/ void write_com(uchar com) { lcdrs=0; P3=com; delayms(5); lcden=1; delayms(5); lcden=0; } void write_data(uchar date) { lcdrs=1; P3=date; delayms(5); lcden=1; delayms(5); lcden=0; } void lcd1602init() { lcdrw=0; lcden=0; write_com(0x38); write_com(0x0c); write_com(0x06); write_com(0x01); } /*************简单延时函数************/ void delay(unsigned int x_ms) { unsigned char i, j; while(x_ms) { i = 2; j = 239; do { while (--j); } while (--i); x_ms--; } } void delayms(uint z) { uint x,y; for(x=z;x>0;x--) for(y=110;y>0;y--); } /************定时器相关函数***********/ void timer_init() { TMOD=0x01; TH0 = (65536-50000)/256; TL0 = (65536-50000)%256; ET0 = 1 ; TR0 = 1 ; EA = 1 ; } void timer0()interrupt 1{ aaa+=1; TH0 = 15536/256; TL0 = 15536%256; if(aaa==10) { aaa=0; DHT22_init(); HH=ReadHH(); HL=ReadHL(); TH=ReadTH()