// Include the ESP32 Arduino Servo Library instead of the original Arduino Servo Library
#include <ESP32Servo.h>

#define servoPin 13  //pines recomendados 2,4,12-19,21-23,25-27,32-33
// Possible PWM GPIO pins on the ESP32: 0(used by on-board button),2,4,5(used by on-board LED),12-19,21-23,25-27,32-33


Servo servo1;  // create servo object to control a servo

void setup() {
  // Allow allocation of all timers
  ESP32PWM::allocateTimer(0);
  ESP32PWM::allocateTimer(1);
  ESP32PWM::allocateTimer(2);
  ESP32PWM::allocateTimer(3);
  servo1.setPeriodHertz(50);           // Standard 50hz servo
  servo1.attach(servoPin, 500, 2500);  // attaches the servo

  Serial.begin(115200);
  Serial.println("Programa para probar un servo SG90");
  servo1.write(0);  // tell servo to go to position in variable 'pos'
  delay(2000);       // waits 15ms for the servo to reach the position

  servo1.write(180);  // tell servo to go to position in variable 'pos'
  delay(2000);
}

void loop() {
  for (int pos = 0; pos <= 180; pos += 1) {  // goes from 0 degrees to 180 degrees
    // in steps of 1 degree
    servo1.write(pos);  // tell servo to go to position in variable 'pos'
    delay(20);           // waits 15ms for the servo to reach the position
  }
  for (int pos = 180; pos >= 0; pos -= 1) {  // goes from 180 degrees to 0 degrees
    servo1.write(pos);                  // tell servo to go to position in variable 'pos'
    delay(20);                           // waits 15ms for the servo to reach the position
  }
}