/*
   PIR sensor tester
*/

int ledPin = 13;               
int inputPin = 2;              
int pirState = LOW;            
int val = 0;            
const int SPEAKER_PIN = A3;

void setup() {
  pinMode(ledPin, OUTPUT);     
  pinMode(inputPin, INPUT);

  Serial.begin(9600);
}

void loop() {
  val = digitalRead(inputPin); 
  if (val == HIGH) {
    digitalWrite(ledPin, HIGH);
    tone(SPEAKER_PIN, 1000);
    noTone(SPEAKER_PIN);
   
    if (pirState == LOW) {
      Serial.println("Motion detected!");
      tone(SPEAKER_PIN, 1000);
      pirState = HIGH;
    }
    
  } else {
    digitalWrite(ledPin, LOW);
    if (pirState == HIGH)
    {
      Serial.println("Motion ended!");                            
      noTone(SPEAKER_PIN);
      pirState = LOW;
    }
  } 
}