獲取驅動庫

首先，我們利用arduino的IDE獲取溫濕度傳感器的驅動庫，庫管理器中搜索dht11即可。

如果發現有其他依賴的庫需要安裝，也一起安裝吧！

測試驅動庫

安裝好了之后，我們就可以在IDE的實例庫中找到測試實例

打開實例，編譯一次，發現沒有問題，那么說明我們的驅動庫下載好了。接下來我們就可以打開proteus繪制電路圖，來仿真了。

proteus仿真

繪制電路圖

代碼

代碼為測試dht11的代碼，即驅動實例庫中自帶：

#include "DHT.h"

#define DHTPIN 8     // Digital pin connected to the DHT sensor
#define DHTTYPE DHT11   // DHT 22  (AM2302), AM2321

DHT dht(DHTPIN, DHTTYPE);

void setup() {
  Serial.begin(9600);
  Serial.println(F("DHTxx test!"));

  dht.begin();
}

void loop() {
  // Wait a few seconds between measurements.
  delay(2000);
  float h = dht.readHumidity(); 
  float t = dht.readTemperature();
  float f = dht.readTemperature(true);

  // Check if any reads failed and exit early (to try again).
  if (isnan(h) || isnan(t) || isnan(f)) {
    Serial.println(F("Failed to read from DHT sensor!"));
    return;
  }

  // Compute heat index in Fahrenheit (the default)
  float hif = dht.computeHeatIndex(f, h);
  // Compute heat index in Celsius (isFahreheit = false)
  float hic = dht.computeHeatIndex(t, h, false);

  Serial.print(F("Humidity: "));
  Serial.print(h);
  Serial.print(F("%  Temperature: "));
  Serial.print(t);
  Serial.print(F("°C "));
  Serial.print(f);
  Serial.print(F("°F  Heat index: "));
  Serial.print(hic);
  Serial.print(F("°C "));
  Serial.print(hif);
  Serial.println(F("°F"));
}

仿真