#include <ESP32Servo.h>

Servo servo;

#define pinServo 18
#define pinButton 27

const int stepDeg = 1;
const int stepDelayMs = 15;

void moveServoSmooth(int fromDeg, int toDeg) {
  if (fromDeg < toDeg) {
    for (int p = fromDeg; p <= toDeg; p += stepDeg) {
      servo.write(p);
      delay(stepDelayMs);
    }
  } else {
    for (int p = fromDeg; p >= toDeg; p -= stepDeg) {
      servo.write(p);
      delay(stepDelayMs);
    }
  }
}

void setup() {
  pinMode(pinButton, INPUT_PULLUP);
  servo.attach(pinServo);
  servo.write(0);
}

void loop() {
  bool button = digitalRead(pinButton);

  if (button == 0) {
    moveServoSmooth(0, 180);
    delay(10000);
    moveServoSmooth(180, 0);
    while (digitalRead(pinButton) == 0) {
      delay(10);
    }
  } else {
    servo.write(0);
  }
}