int ledPin = 7;
int inputPin = 8;
int pirState = LOW;
int val = 0;

void setup() {
  pinMode(ledPin, OUTPUT);
  pinMode(inputPin, INPUT);
  Serial.begin(9600);
}

void loop() {
  val = digitalRead(inputPin);
  if(val == HIGH) {
    digitalWrite(ledPin, HIGH);
    if (pirState == LOW) {
      Serial.println("Motion Detected");
      pirState = HIGH;
    }
  } else{
    digitalWrite(ledPin, LOW);
    if (pirState == HIGH) {
      Serial.println("Motion ended!");
      pirState = LOW;
    }
  }
}