#include <ESP32Servo.h>

static const int Servo_pin = 13;
int posdeg;

Servo servo1;

void setup() {
  Serial.begin(115200);
  servo1.attach(Servo_pin);
}

void loop() {
  for(posdeg = 0; posdeg <= 180; posdeg++) {
    servo1.write(posdeg);
    Serial.println(posdeg);
    delay(20);
  }

  for(posdeg = 180; posdeg >= 0; posdeg--) {
    servo1.write(posdeg);
    Serial.println(posdeg);
    delay(20);
  }
}