zDHT.h

#include "DHT.h"
#include "State.h"
/*
* SETUP DHT (TEMP/HUMIDITY SENSOR)
*/
#define DHTPIN 17     // Digital pin connected to the DHT sensor
#define DHTTYPE DHT11   // DHT 22  (AM2302), AM2321
DHT dht(DHTPIN, DHTTYPE);

void updateDHT(State &st){
  delay(1000);
  // Reading temperature or humidity takes about 250 milliseconds!
  // Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor)
  float h = dht.readHumidity();
  // Read temperature as Celsius (the default)
  float t = dht.readTemperature();
  // Read temperature as Fahrenheit (isFahrenheit = true)
  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);

  #if DEBUG == true
  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"));
  #endif
  if(st.lastHum != h && st.lastTemp != t){
    st.lastHum = h;
    st.lastTemp = t;
  }
}