/// <summary>
/// Closes modem's serial port connection and updates UI accordingly.
/// </summary>
private void CloseShop()
{
if (_modem.IsOpen)
{
_modem.Received -= Modem_ReceiveEvent;
_modem.Error -= Modem_ErrorEvent;
_modem.Close();
_view.DisableDeviceRelatedControls(false);
_view.UpdateProvider(Resources.NoRealValue);
_view.UpdateRSSI(1);
_view.UpdateCSNetwork(6);
_view.UpdatePSNetwork(6);
_view.UpdatePSAttachment(2);
_view.UpdateToolStripStatus($"Disconnected from {_view.SelectedModem}");
}
}