40 基于单片机的温湿度检测判断系统-三、程序编程

#include <REGX52.H>#include<intrins.h>#include<stdio.h>#include "Delay.h"#include "LCD1602.h"#define uchar unsigned char#define uint unsigned  intsbit beep=P3^4;
sbit key1=P3^6; // sbit key2=P3^5; // 减少sbit key3=P1^0; // 增加sbit key4=P1^1; // 增加sbit jdq = P3^3;//继电器sbit Temp\_data=P2^6;  //DHT11unsigned char rec\_dat\_lcd0\[6\];unsigned char rec\_dat\_lcd1\[6\];unsigned char rec\_dat\_lcd2\[6\];unsigned char rec\_dat\_lcd3\[6\];unsigned int rec\_dat\[4\];static uchar wd,sd;static int wdyz=40,sdyz=80;void DHT11\_delay\_us(unsigned char n);void DHT11\_delay\_ms(unsigned int z);void DHT11\_start();unsigned char DHT11\_rec\_byte();void DHT11\_receive();void beep\_warning();void cshq();void xxpxs();void ajjc();//延时msvoid DHT11\_delay_ms(unsigned int z){    unsigned int i,j;    for(i=z; i>0; i--)        for(j=110; j>0; j--);
}//延时us   --2*n+5usvoid DHT11\_delay\_us(unsigned char n){    while(--n);
}//DHT11起始信号void DHT11_start(){
    Temp\_data=1;    DHT11\_delay_us(10);

    Temp\_data=0;    DHT11\_delay_ms(50);//这个延时不能过短,18ms以上,实际在仿真当中要想读到数据延时要在延时参数要在40以上才能出数据

    Temp\_data=1;    DHT11\_delay\_us(30);//这个延时不能过短}//接收一个字节unsigned char DHT11\_rec_byte(){    unsigned char i,dat=0;    for(i=0; i<8; i++)
    {        while(!Temp\_data);        DHT11\_delay_us(8);
        dat <<=1;        if(Temp_data==1)
        {
            dat +=1;
        }        while(Temp_data);
    }    return dat;
}//接收温湿度数据void DHT11\_receive(){    unsigned int R\_H,R\_L,T\_H,T\_L;    unsigned char RH,RL,TH,TL,revise;    DHT11\_start();
    Temp\_data=1;    if(Temp\_data==0)
    {        while(Temp_data==0);   //等待拉高
        DHT11\_delay\_us(40);  //拉高后延时80us

        R\_H=DHT11\_rec_byte();    //接收湿度高八位
        R\_L=DHT11\_rec_byte();    //接收湿度低八位
        T\_H=DHT11\_rec_byte();    //接收温度高八位
        T\_L=DHT11\_rec_byte();    //接收温度低八位
        revise=DHT11\_rec\_byte(); //接收校正位

        DHT11\_delay\_us(25);    //结束

        if((R\_H+R\_L+T\_H+T\_L)==revise)      //校正
        {
            RH=R_H;
            RL=R_L;
            TH=T_H;
            TL=T_L;

        }        /*数据处理，方便显示*/
        rec_dat\[0\]=RH;
        rec_dat\[1\]=RL;
        rec_dat\[2\]=TH;
        rec_dat\[3\]=TL;

    }

}void dht11(){	      DHT11\_delay\_ms(150);        DHT11\_receive();	      sprintf(rec\_dat\_lcd0,"%d",rec\_dat\[0\]);        sprintf(rec\_dat\_lcd1,"%d",rec\_dat\[1\]);        sprintf(rec\_dat\_lcd2,"%d",rec\_dat\[2\]);        sprintf(rec\_dat\_lcd3,"%d",rec\_dat\[3\]);        DHT11\_delay_ms(100);
	
	      wd = rec\_dat\[3\]*10 + rec\_dat\[2\];
				sd = rec\_dat\[1\]*10 + rec\_dat\[0\];

}void beep_warning()//蜂鸣器警报并且电机转动{	if(wd>wdyz)
	{
		beep = 1;
		jdq  = 0;
	}		
	
	
	if(sd>sdyz)
	{
		beep = 1;
		jdq  = 0;
	}  

  if(wd<=wdyz && sd<=sdyz  )	
	{
		beep = 0;
		jdq  = 1;
	}
}void main()					  //主函数{	
	LCD_Init();         //显示屏初始化
	beep = 0;
	jdq = 1;	do
	{		dht11(); //温湿度获取
		ajjc();   //按键检测
		xxpxs();  //显示屏显示
		beep_warning();    //状态判断

	}  while(1);
}void ajjc()  //按键检测{	if(!key1)
	{
		wdyz++;		while(!key1);
	}	
	if(!key2)
	{
		wdyz--;		while(!key2);
	}	
	if(!key3)
	{
		sdyz++;		while(!key3);
	}	
	if(!key4)
	{
		sdyz--;		while(!key4);
	}
}void xxpxs()  //显示屏显示{	
		LCD_ShowString(1,1,"wd:");	
		LCD_ShowString(1,8,"sd:");	
	LCD_ShowNum(1,4,wdyz,3); //
	LCD_ShowNum(1,11,sdyz,3);//

		LCD\_ShowString(2,1,"wd:");			LCD\_ShowNum(2,4,wd,3);//
			LCD_ShowString(2,8,"sd:");	
			LCD_ShowNum(2,11,sd,3);//

	}