#include <DHT.h>

#define DHTPIN 2
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);

void setup() {
  Serial.begin(115200);
  Serial.println("DHT22 Sensor Test");
  dht.begin();
  delay(3000);
}

void loop() {
  float temperature = dht.readTemperature();
  float humidity = dht.readHumidity();
    if (isnan(temperature) || isnan(humidity)) {
    Serial.println("failed to read from DHT sensor!");
  } else {
  Serial.print("Temp: ");
  Serial.print(temperature);
  Serial.print(" C, ");
  Serial.print("Humidity: ");
  Serial.print(humidity);
  Serial.println(" %");
  }
  delay(2000);
}