// this programme is to read the temperature and humidity using a DHT22 sensor
#include <DHTesp.h> // To import DHT22 header file
int DHT_PIN = 21; // Assign GPIO 21 to DHT22 sensor
int LED_PIN = 14; // Assign GPIO 14 to LED
DHTesp dhtSensor; // create an instance from DHTesp library

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200); // Open serial port, sets data rate to 9600bps
  pinMode(DHT_PIN, INPUT);
  pinMode(LED_PIN, OUTPUT);
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22); // To declare the sensor will be attached in which pin and sensor model
}

void loop() {
  TempAndHumidity data = dhtSensor.getTempAndHumidity(); // To get the temperature and humidity from the sensor
  Serial.println("Temp: " + String(data.temperature, 2) + "°C"); // Print the temperature
  Serial.println("Humidity: " + String(data.humidity, 2) + "%"); // Print the humidity
  Serial.println("---");

  if (data.temperature >= 40){
    digitalWrite(LED_PIN, HIGH);
    delay(1000); // This speeds up simulation
  }

  else {
    digitalWrite(LED_PIN, LOW);
    delay(2000); // Wait for new reading from the sensor (DHT22 has ~0.5Hz sample rate)
  }

}