Method finalizeAndConnect

app/src/IO/Drivers/Modbus.cpp:412–455

* @brief Wires the Modbus client signals and attempts the connection. */

 * @brief Wires the Modbus client signals and attempts the connection.
 */
bool IO::Drivers::Modbus::finalizeAndConnect(const QString& target)
{
  if (!m_device) {
    Misc::Utilities::showMessageBox(
      tr("Modbus Initialization Failed"),
      tr("Unable to create Modbus device. Check your system configuration and try again."),
      QMessageBox::Critical);
    return false;
  }

  m_device->setTimeout(1000);
  m_device->setNumberOfRetries(3);

  connect(m_device,
          &QModbusClient::stateChanged,
          this,
          &IO::Drivers::Modbus::onStateChanged,
          Qt::UniqueConnection);
  connect(m_device,
          &QModbusClient::errorOccurred,
          this,
          &IO::Drivers::Modbus::onErrorOccurred,
          Qt::UniqueConnection);

  if (!connectWithRetry()) {
    QString error = m_device->errorString();
    m_device->deleteLater();
    m_device = nullptr;

    Misc::Utilities::showMessageBox(
      tr("Modbus Connection Failed"),
      error.isEmpty()
        ? tr("Unable to connect to \"%1\". Check your connection settings.").arg(target)
        : tr("\"%1\": %2").arg(target, error),
      QMessageBox::Critical);
    return false;
  }

  if (m_device->state() == QModbusDevice::ConnectedState)
    m_pollTimer->start(m_pollInterval);

  Q_EMIT configurationChanged();
  return true;
}

/**
 * @brief Connects the Modbus client. For TCP it retries a few times with a short backoff so a