Switch case Arduino

switch-case.ino

const int led_amarelo = 10;
const int led_verde = 11;
const int led_vermelho = 12;
char led;

void setup() {
  pinMode(led_amarelo, OUTPUT);
  pinMode(led_verde, OUTPUT);
  pinMode(led_vermelho, OUTPUT);
  Serial.begin(9600);

}

void loop() {
  if (Serial.available()){
    led = Serial.read();
    
  switch (led) {
    case 'R': digitalWrite(led_vermelho, HIGH);
      break;
    case 'r': digitalWrite(led_vermelho, LOW);
      break;
    case 'G': digitalWrite(led_verde, HIGH);
      break;
    case 'g': digitalWrite(led_verde, LOW);
      break;
    case 'Y': digitalWrite(led_amarelo, HIGH);
      break;
    case 'y': digitalWrite(led_amarelo, LOW);
      break;
    default: Serial.println("Nenhum led selecionado");
    }
 
  }

}