buffer = "";
serial = new QSerialPort (this);
serial->setPortName("/dev/ttyAMA0"); //" /dev/ttyACM0");
serial->setBaudRate(QSerialPort::Baud9600);
//serial->setDataBits(QSerialPort::Data8);
serial->setParity(QSerialPort::NoParity);
serial->setStopBits(QSerialPort::OneStop);
serial->setFlowControl(QSerialPort::NoFlowControl);
serial->open(QIODevice::ReadWrite);
serial->setReadBufferSize(QSerialPort::Data8);
connect (serial , & QSerialPort :: readyRead , this , & oxitrol:: read);

void oxitrol::read()

QStringList bufferSplit = buffer.split(",");

  if(bufferSplit.length() <4)
{
    data =serial->readAll();
    //qDebug() << buffer;

    buffer += QString::fromStdString(data.toStdString());
}
else
{
    dato1=bufferSplit[0];
   dato2=bufferSplit[1];
    dato3=bufferSplit[2];
   // dato4=bufferSplit[3];
   // dato5=bufferSplit[4];
     buffer ="";
    // serial->flush();
  //

     qDebug() << bufferSplit;
     // qDebug() << "CADENA: "<< bufferSplit;
    data.clear();
    buffer.clear();
     bufferSplit.clear();
}