int inputPin = D0;              
int ledPin = D1;               
int pirState = LOW;            
int val = 0;                   

int calibrateTime = 10000;      
void setup()
{
  pinMode( ledPin, OUTPUT );
  pinMode(inputPin, INPUT);     
}

void loop()
{


  if ( calibrated() )
  {
  
    readTheSensor();

    
    reportTheData();
  }
}

void readTheSensor() {
  val = digitalRead(inputPin);
}

bool calibrated() {
  return millis() - calibrateTime > 0;
}

void reportTheData() {

  
  if (val == HIGH) {

    
    if (pirState == LOW) {
      
      Particle.publish("designingiot/s15/motion");
    
      pirState = HIGH;
      setLED( pirState );
    }
  } else {
    if (pirState == HIGH) {
    
      pirState = LOW;
      setLED( pirState );
    }
  }
}

void setLED( int state )
{
  digitalWrite( ledPin, state );
}