#include "DHT.h"

// DHT sensor settings
#define DHTPIN 21      // Pin where the DHT sensor is connected
#define DHTTYPE DHT22  // DHT 22 (AM2302), DHT11

DHT dht(DHTPIN, DHTTYPE);

// LED settings
#define LEDPIN 25      // Pin where the LED is connected

void setup() {
  // Initialize serial communication
  Serial.begin(115200);
  Serial.println("DHTxx test!");

  // Initialize the DHT sensor
  dht.begin();

  // Initialize the LED pin as an output
  pinMode(LEDPIN, OUTPUT);
}

void loop() {
  // Wait a few seconds between measurements
  delay(2000);

  // Reading temperature and humidity
  float h = dht.readHumidity();
  float t = dht.readTemperature();

  // Check if any reads failed and exit early (to try again)
  if (isnan(h) || isnan(t)) {
    Serial.println("Failed to read from DHT sensor!");
    return;
  }

  // Print the results
  Serial.print("Humidity: ");
  Serial.print(h);
  Serial.print(" %\t");
  Serial.print("Temperature: ");
  Serial.print(t);
  Serial.println(" *C ");

  // Control the LED based on temperature threshold
  if (t > 25.0) { // Adjust the threshold temperature as needed
    digitalWrite(LEDPIN, HIGH); // Turn the LED on
  } else {
    digitalWrite(LEDPIN, LOW); // Turn the LED off
  }
}