const int pirPin = 19; // PIR motion sensor connected to GPIO 2
const int redLedPin = 5; // Red LED connected to GPIO 4
const int greenLedPin = 21; // Green LED connected to GPIO 5

void setup() {
  pinMode(pirPin, INPUT);
  pinMode(redLedPin, OUTPUT);
  pinMode(greenLedPin, OUTPUT);

  // Initially, turn off both LEDs
  digitalWrite(redLedPin, LOW);
  digitalWrite(greenLedPin, LOW);

  Serial.begin(115200);
}

void loop() {
  int motion = digitalRead(pirPin);

  if (motion == HIGH) {
    // Motion detected (Parking slot occupied)
    digitalWrite(redLedPin, HIGH); // Turn on red LED
    digitalWrite(greenLedPin, LOW); // Turn off green LED
    Serial.println("Parking slot occupied");
  } else {
    // No motion (Parking slot empty)
    digitalWrite(redLedPin, LOW); // Turn off red LED
    digitalWrite(greenLedPin, HIGH); // Turn on green LED
    Serial.println("Parking slot empty");
  }

  delay(1000); // Delay to avoid reading the sensor too quickly
}