// Edge Processing: Abnormal Sensor Value Detection
// Platform: ESP32 (Wokwi)

#define SENSOR_PIN 34      // Analog input (potentiometer)
#define LED_PIN 2          // LED indicator

// Thresholds tuned for ESP32 ADC range (0–4095)
#define LOW_THRESHOLD 1000
#define HIGH_THRESHOLD 3000

void setup() {
  
  Serial.begin(115200);
  delay(2000);
  pinMode(LED_PIN, OUTPUT);
  digitalWrite(LED_PIN, LOW);
}

void loop() {
  Serial.println("Hello............");
  int sensorValue = analogRead(SENSOR_PIN);

  Serial.print("Sensor Value: ");
  Serial.println(sensorValue);

  // Edge-based anomaly detection
  if (sensorValue < LOW_THRESHOLD) {
    Serial.println("⚠️ ALERT: Sensor value TOO LOW");
    digitalWrite(LED_PIN, HIGH);
  }
  else if (sensorValue > HIGH_THRESHOLD) {
    Serial.println("⚠️ ALERT: Sensor value TOO HIGH");
    digitalWrite(LED_PIN, HIGH);
  }
  else {
    Serial.println("✅ Status: NORMAL");
    digitalWrite(LED_PIN, LOW);
  }

  delay(1000); // Read every 1 second
}