#include <DHT.h>

const int DHT_PIN = 2;
DHT dht(DHT_PIN, DHT22);

void setup() {
  Serial.begin(115200);
  dht.begin();
}

void loop() {
  float temperature = dht.readTemperature();
  float humidity = dht.readHumidity();
  if (!isnan(temperature) && !isnan(humidity)) {
    Serial.print(temperature);
    Serial.print(" C, ");
    Serial.print(humidity);
    Serial.println(" %");
  }
  delay(2000);
}