/*Imported Library for DHT22 Sensor*/
#include <DHT.h>


/*Pin declaration*/
#define DHTPIN 5
#define DHTTYPE DHT22

const int PIN_RED = 2;
const int PIN_BLUE = 3;

/*Variables declaration*/
float humidity;
float temperature;

DHT dht(DHTPIN, DHTTYPE);

void setup() {
  
  Serial.begin(115200);
  Serial.println("Hello, ESP32-C3!");

  pinMode(PIN_RED, OUTPUT);
  pinMode(PIN_BLUE, OUTPUT);

  dht.begin();
}

void loop() {

  humidity = dht.readHumidity();
  temperature = dht.readTemperature();
  
  if (isnan(humidity) || isnan(temperature)) {
    Serial.println("Αποτυχία ανάγνωσης αισθητήρα DHT!");
    return;
  }

  //Print temp and humidity values to serial monitor
  Serial.print("Humidity: ");
  Serial.print(humidity);
  Serial.print(" %, Temp: ");
  Serial.print(temperature);
  Serial.println(" Celsius");

  if(temperature < 18)
  {
    //BLUE LED
    digitalWrite(PIN_RED, LOW);
    digitalWrite(PIN_BLUE, HIGH);
    delay(500);
  }
  else
  {
    //RED LED
    digitalWrite(PIN_BLUE, LOW);
    digitalWrite(PIN_RED, HIGH);
    delay(500);
  }

  delay(2000); //Delay 2 sec.

}