const int LED_D5 = 5;
const int LED_D8 = 8;
const int SWITCH_D20 = 20;
const int SWITCH_D21 = 21;

void setup() {
  Serial.begin(115200);
  Serial.println("Setup started"); // Message de débogage
  pinMode(LED_D5, OUTPUT);
  pinMode(LED_D8, OUTPUT);
  pinMode(SWITCH_D20, INPUT_PULLUP);
  pinMode(SWITCH_D21, INPUT_PULLUP);
  Serial.println("Setup completed"); // Message de débogage
}

void loop() {
  if (Serial.available()) {
    char commande = Serial.read();
    Serial.print("Received command: "); // Message de débogage
    Serial.println(commande);
    
    // Ignore newline and carriage return characters
    if (commande == '\n' || commande == '\r') {
      return;
    }

    switch (commande) {
      case 'A':
        digitalWrite(LED_D5, HIGH);
        break;
      case 'B':
        digitalWrite(LED_D5, LOW);
        break;
      case 'C':
        digitalWrite(LED_D8, HIGH);
        break;
      case 'D':
        digitalWrite(LED_D8, LOW);
        break;
      case 'E':
        Serial.println(digitalRead(SWITCH_D20));
        break;
      case 'F':
        Serial.println(digitalRead(SWITCH_D21));
        break;
      default:
        Serial.println("Commande non reconnue");
        break;
    }
  }
}