#include <DHT.h>

#define DHTPIN 4
#define DHTTYPE DHT22

#define LED_PIN 2
#define BUZZER_PIN 15

DHT dht(DHTPIN, DHTTYPE);

void setup() {
  Serial.begin(115200);

  pinMode(LED_PIN, OUTPUT);
  pinMode(BUZZER_PIN, OUTPUT);

  dht.begin();

  Serial.println("Edge Processing: Abnormal Sensor Detection");
}

void loop() {

  float temperature = dht.readTemperature();
  float humidity = dht.readHumidity();

  Serial.print("Temperature: ");
  Serial.print(temperature);
  Serial.print("  Humidity: ");
  Serial.println(humidity);

  // Edge processing logic
  if (temperature > 55 || temperature < 5 || humidity > 95) {

    Serial.println("⚠ ALERT: Abnormal Sensor Value!");

    digitalWrite(LED_PIN, HIGH);
    digitalWrite(BUZZER_PIN, HIGH);
  } 
  else {

    digitalWrite(LED_PIN, LOW);
    digitalWrite(BUZZER_PIN, LOW);
  }

  Serial.println("------------------------");

  delay(2000);
}