#include <DHT22.h>
//define pin data
#define pinDATA 12 // SDA, or almost any other 1/0 pin

DHT22 dht22(pinDATA);

void setup() {
  Serial.begin(115200); //1bit=1Ohs
  Serial.println("/ntest capteur DTH22");
  pinMode((led, OUTPUT));
}

void loop() {
  //optional

  float temp = dht22.getTemperature();
  float humi = dht22.getHumidity()  

  if(dht22.getLastError()  != dht22.OK)  {
    Serial.print("last error :");
    Serial.print(dht22.getLastError());
  }

Serial.print("humi=");Serial.print(humi, 1);Serial.print("/t");
Serial.print("temp=");Serial.println(temp, 1);
delay(2000); //Collecting period shold be : >1.7 second
}