#include <Servo.h>

#define SERVO 9
#define OPEN 0
#define CLOSE 90 
#define MSP 2

Servo gateServo;

void setup() {
  gateServo.attach(SERVO); 
  pinMode(MSP, INPUT);  
}

void loop() {
  if (detectMotion()) {
    openGate();  
    delay(5000); 
  } else {
    closeGate();  
  }
}

bool detectMotion() {
  if (digitalRead(MSP) == HIGH) {
    return true;
  } else {
    return false;
  }
}

void openGate() {
  gateServo.write(OPEN);
  delay(1000);  
}

void closeGate() {
  gateServo.write(CLOSE);
  delay(1000); 
}