//#SLAVE I2C

#include <Wire.h>
#include "DHT.h"

#define DHTPIN D3
#define DHTTYPE DHT22   // DHT 22  (AM2302), AM2321

DHT dht(DHTPIN, DHTTYPE);

byte temperatureC;
byte humidity;

void setup()
{

  Serial.begin(9600);
  dht.begin();
  Wire.begin(2);                // join i2c bus with address #0x02 (OLED Screen is already On 0x3C)
  Wire.onRequest(requestEvent); // register event

}

void loop()
{
  humidity = dht.readHumidity();
  // Read temperature as Celsius (the default)
  temperatureC = dht.readTemperature();

  Serial.print(F("Humidity: "));
  Serial.print(humidity);
  Serial.print(F("%  Temperature: "));
  Serial.print(temperatureC);
  Serial.println(F("°C "));

  delay(700);
}

// function that executes whenever data is requested by master
// this function is registered as an event, in the setup()
void requestEvent() {
  Wire.write(temperatureC);
}