#include <Servo.h>

int pinServo = 11;
int pinSwitch = 10;
boolean a180=true;

Servo myservo1;
Servo myservo2;

void setup()
{
  myservo1.attach(11);
  pinMode(pinSwitch,INPUT);
}

void loop()
{
  if (a180 == true){
    myservo1.write(180);
    delay(2000);
  }else{
    myservo1.write(0);
    delay(2000);
  }

  if (digitalRead(pinSwitch) == HIGH){
    if (a180 == true){
      a180 = false;
    }else{
      a180=true;
    }
  }
}