#include "DHT.h"
#define DHTPIN 2
#define DHTTYPE DHT22

DHT dht(DHTPIN,DHTTYPE);
void setup()
{
  Serial.begin(115200);
  Serial.println(F("DHT 22 example1"));
  dht.begin();
}
void loop()
{
  float temperature=dht.readTemperature();
  float humidity=dht.readHumidity();
  if(isnan(temperature)||isnan(humidity))
  {
    Serial.println(F("Failed to read from DHT sensor"));
    return;
  }
  Serial.print(F("humidity:"));
  Serial.print(humidity);
  Serial.print(F("%Temperature:"));
  Serial.print(temperature);
  Serial.println(F("0c"));
  delay(2000);
}