#include <Servo.h>

Servo myservo;  // create servo object to control a servo
// twelve servo objects can be created on most boards

int pos = 0;    // variable to store the servo position

void setup() {
  myservo.attach(9);  // attaches the servo on pin 9 to the servo object
}

void loop() {
  for (pos >= 0; pos <= 360; pos += 360) { 
    // in steps of 1 degree
    while (true) {
          myservo.write(pos);              // tell servo to go to position in variable 'pos'
          delay(0); 
      }
                      // waits 15ms for the servo to reach the position
  }

}