PC_Botao.ino

const String programa = "shutdown";
char buffer[128];
const int chave = 2;
const int rele = 5;
int cont = 2;
//------------------------------------------
void setup()
{
  Serial.begin(9600);
  Serial.flush();
  pinMode (chave, INPUT_PULLUP);
  pinMode (5, OUTPUT );
  delay (10000);
  Serial.println("Inicializado...");
  digitalWrite (5, HIGH);
}
//------------------------------------
void loop()
{
  if (digitalRead(2) == 0)
  {                                                   //  }
    delay(30);                                        // Delay para debouncing
    if (digitalRead(2) == 0)                          // Se o botao continua pressionado
    {
      cont++;
      delay (2000);
    }
  }                                                   //  }

  if (cont == 3)
  {
    cont = 1;
  }
  if (cont == 1)
  {
    digitalWrite (5, HIGH);
    delay (500);
  }
  else if (cont == 2)
  {
    if (!digitalRead(chave))
    {
      delay(200);
      if (!digitalRead(chave))
      {
        sprintf (buffer, "#2cmd:%s#3", programa.c_str());
        Serial.println(buffer);
        delay (30000);
        digitalWrite (5, LOW);
        delay (500);
      }
    }
  }
}