int led=23;

int freq = 5000;//5kHZ
int canal=0; // usamos el canal 0 de los 16 posibles (0 al 15)
int resol=8;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  //pinMode(led, OUTPUT);
  ledcSetup(canal,freq,resol);
  ledcAttachPin(led,canal);
}

void loop() {
  // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation
  ledcWrite(canal,255)
}