#include <DHT.h>

#define DHT_PIN 26     // Pin to which the DHT sensor is connected
#define DHT_TYPE DHT22 // Change to DHT11 if you are using that sensor

#define RED_LED_PIN 22  // GPIO pin for the red LED
#define BLUE_LED_PIN 23 // GPIO pin for the blue LED

DHT dht(DHT_PIN, DHT_TYPE);

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

  dht.begin();

  pinMode(RED_LED_PIN, OUTPUT);
  pinMode(BLUE_LED_PIN, OUTPUT);
}

void loop() {
  // Measure temperature and humidity
  float temperature = dht.readTemperature();
  float humidity = dht.readHumidity();

  // Check if the readings are valid
  if (!isnan(temperature) && !isnan(humidity)) {
    // Print the readings
    Serial.print("Temperature: ");
    Serial.print(temperature);
    Serial.print(" °C, Humidity: ");
    Serial.print(humidity);
    Serial.println("%");

    // Check temperature thresholds
    if (temperature > 40.0 || temperature < 20.0) {
      // Blink the red LED
      digitalWrite(RED_LED_PIN, HIGH);
      delay(1000);
      digitalWrite(RED_LED_PIN, LOW);
    }

    // Check humidity threshold
    if (humidity > 80.0) {
      // Blink the blue LED
      digitalWrite(BLUE_LED_PIN, HIGH);
      delay(1000);
      digitalWrite(BLUE_LED_PIN, LOW);
    }

    // Wait for 3 minutes (180000 milliseconds)
    delay(1800);
  } else {
    Serial.println("Failed to read from DHT sensor. Check the wiring.");
  }
}