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#include <Servo.h>
Servo myservo;  // create servo object to control a servo
int val = 0;    // variable to store the servo position
int openPos=180;
int closePos=0;
char reader=0;
const int hallPin = 2;
const int servoPin = 10;
const int ledPin = 13;
const int closedVal=120; // define servo open position in degrees
const int openVal=20; //define servo closed position in degrees
int hallState=0;
int lastState=1;
bool servoPosition=LOW;
void setup() {
  myservo.attach(9);  // attaches the servo on pin 9 to the servo object
    // initialize the LED pin as an output:
  pinMode(hallPin, INPUT);
  pinMode(servoPin, OUTPUT);
  pinMode(ledPin, OUTPUT);
}
void loop() {
  hallState = digitalRead(hallPin);
   
  if (hallState == LOW && lastState == HIGH){
    if (servoPosition == HIGH){
      servoPosition = LOW;
      digitalWrite(servoPin, HIGH);
      digitalWrite(ledPin, HIGH);
      myservo.write(closedVal);
      delay(1000);
      digitalWrite(servoPin, LOW);
      digitalWrite(ledPin, LOW);
    }
  
  else{
          servoPosition = HIGH;
          digitalWrite(servoPin, HIGH);
          digitalWrite(ledPin, HIGH);
          myservo.write(openVal);
          delay(1000);
          digitalWrite(servoPin, LOW);
          digitalWrite(ledPin, LOW);    
      }
  }
  else{}
  lastState = hallState;
}