char x;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  pinMode(2,OUTPUT);
  pinMode(4,OUTPUT);
}

void loop() {

if (Serial.available() > 0){
  //Serial.println("inicioooo");
  char led = Serial.read();
  if(led == 'q'){
  digitalWrite(2, HIGH);
  Serial.println("LED AZUL - Encendido");
  delay(250);}

  if(led == 'w'){
  digitalWrite(2, LOW);
  Serial.println("LED AZUL - APAGADO");
  delay(250); 
  }

  if(led == 'a'){
  digitalWrite(4, HIGH);
  Serial.println("LED ROJO - Encendido");
  delay(250);}

  if(led == 's'){
  digitalWrite(4, LOW);
  Serial.println("LED ROJO - APAGADO");
  delay(250); 
  }
}
}