Arduino&Proteus 8 Professional——(数据信号采集DHT11)for Neuedu

痛定思痛。 2022-11-18 13:58 168阅读 0赞

> 实现显示湿度和温度变化

***.ino***

#include "dht11.h"
    DHT11 mydht11(13);
    void setup() { 
    Serial.begin(9600);
    }
    
    void loop() { 
      mydht11.DHT11_Read();
      Serial.print("Humidity:");
      Serial.print(mydht11.humi);
      Serial.print(".");
      Serial.println(mydht11.humiP);
      delay(500);
      Serial.print("Temperature:");
      Serial.print(mydht11.temp);
        Serial.print(".");
      Serial.println(mydht11.tempP);
      delay(1000);
    }

***.cpp***

#include "dht11.h"
    #include "arduino.h"
      unsigned char Humi = 0;
      unsigned char temp = 0;
    DHT11::DHT11(int pin){ 
      DHT11_DQ = pin;
    }
    void DHT11::DHT11_Init(){ 
      pinMode(DHT11_DQ,OUTPUT);
      digitalWrite(DHT11_DQ,LOW);
      delay(30);
      digitalWrite(DHT11_DQ,HIGH);
      delayMicroseconds(40);
      pinMode(DHT11_DQ,INPUT_PULLUP);
    
      while(digitalRead(DHT11_DQ)==HIGH);
      delayMicroseconds(80);
      
      if(digitalRead(DHT11_DQ)==LOW);
      delayMicroseconds(80);
      
    }
    
    unsigned char DHT11::DHT11_Read_Byte(){ 
      unsigned char i = 0;
      unsigned char dat = 0;
      pinMode(DHT11_DQ,INPUT_PULLUP);
      delayMicroseconds(2);
      for(i= 0;i<8;i++){ 
        while(digitalRead(DHT11_DQ)==LOW);
        delayMicroseconds(50);
        
        if(digitalRead(DHT11_DQ)== HIGH){ 
          dat |= (1<<(7-i));
        }
        while(digitalRead(DHT11_DQ)==HIGH);
      }
      return dat;
    }
    
    void DHT11::DHT11_Read(){ 
      DHT11_Init();
      humi = DHT11_Read_Byte();
      humiP = DHT11_Read_Byte();
      temp = DHT11_Read_Byte();
      tempP = DHT11_Read_Byte();
      
      delayMicroseconds(50);
      pinMode(DHT11_DQ,OUTPUT);
      digitalWrite(DHT11_DQ,HIGH);
    }

***.h***

class DHT11{ 
    public:
      unsigned char humi;
      unsigned char humiP;
      unsigned char temp;
      unsigned char tempP;
      
      DHT11(int pin);
      void DHT11_Init();
      void DHT11_Read();
      unsigned char DHT11_Read_Byte();
      
    private:
      int DHT11_DQ;
      
    };

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0dvZE91Tw_size_16_color_FFFFFF_t_70_pic_center]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0dvZE91Tw_size_16_color_FFFFFF_t_70_pic_center 1]

> Ps: VDD可以置空

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0dvZE91Tw_size_16_color_FFFFFF_t_70_pic_center]: /images/20221022/7f9255e0cd8447298c63d32431fe42a6.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0dvZE91Tw_size_16_color_FFFFFF_t_70_pic_center 1]: /images/20221022/c58884ce0949481cac9ca9bdcff68ec9.png