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void Dialog::onReadyRead()
{
    if (port->canReadLine()) {
       //QString recvData=(QString::fromLatin1(port->readAll())); //works fast, but I want to read lines (lf)
       QString recvData=(QString::fromLatin1(port->readLine())); //works, but very slow

       ui->recvEdit->insertPlainText(recvData); //Data from uC with LF

      }
}