int pir = 7;
bool pirState = LOW;
bool btnState = LOW;
int led = 3;
int btn = 8;

void setup() {
  // put your setup code here, to run once:
  pinMode(pir, INPUT);
  pinMode(led, OUTPUT);
  pinMode(btn, INPUT_PULLUP);

  Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
  pirState = digitalRead(pir);
  btnState = !digitalRead(btn);

  Serial.println(btnState);

  if(pirState == HIGH && btnState == HIGH){
    digitalWrite(led, HIGH);
  }else{
    digitalWrite(led, LOW);
  }
  //Serial.println(pirState);
}