int led = 12;
int pirdata  = 4;
int pirstate = LOW;
int value = 0;


void setup() {
  pinMode(led,OUTPUT);
  pinMode(pirdata,INPUT);
  Serial.begin(115200);
  
}

void loop() {
  value = digitalRead(pirdata);
  if (value == HIGH){
    digitalWrite(led,HIGH);
    if(pirstate == LOW){
      Serial.println("Motion detected...");
      pirstate = HIGH;
      delay(1000);
    }
  }
  else if (value == LOW){
    if (pirstate == HIGH);
    digitalWrite(led,LOW);
    Serial.println("Motion end...");
    pirstate = LOW;
    delay(1000);
  }
}