/// <summary>
/// Starts scanning for devices in background. Attach to DeviceFound event to be notified
/// about new devices. Scan exceptions might be received through ScanException event.
/// ATTENTION: Device connections are closed prior to scanning.
/// </summary>
public void StartScan(IScanConfiguration config)
{
if (config is ScanConfigurationEmulation scanConfiguration)
{
lock (_foundDevices)
{
int nr = 0;
foreach (EmulationSettings settings in scanConfiguration.EmulationDevicesSettings)
{
// Add emulated device
IEECommDevice emulatedDevice = new EECommDeviceEmulation(nr++, settings);
if (_foundDevices.FirstOrDefault(x => x.InterfaceType == InterfaceType.Emulation && x.InterfaceId == emulatedDevice.InterfaceId) == null)
{
_foundDevices.Add(emulatedDevice);
// Fire found device event
FireDeviceFound(emulatedDevice);
}
}
}
}
if (config is ScanConfigurationBLE scanConfigurationBLE)
{
StartScanBLE(scanConfigurationBLE);
}
if (config is ScanConfigurationUART scanConfigurationUART)
{
StartScanUART(scanConfigurationUART);
}
}
public IEECommDevice TryGetDevice(IScanConfiguration config, ushort busAddr)
{
if (config is ScanConfigurationUART scanConfigurationUART)
{
if (busAddr == 0)
{
throw new ArgumentException("Device bus address must not be 0", "busAddr");
}
IEECommDevice device = null;
// Search in already existing devices before starting a new scan
lock (_foundDevices)
{
device = _foundDevices.FirstOrDefault(x => x.InterfaceType == InterfaceType.UART && x.InterfaceId == busAddr.ToString());
}
if (device != null)
{
// Try to revitalize device
IEECommProtocol protEE31 = EECommProtocolFactory.GetEE31Protocol(device);
IEECommandResult result = null;
// Force silence
Thread.Sleep(50);
// For non-EE31 devices (Modbus, etc.): Send protocol switch command to make them speak EE31 (again)
ushort discoveryId = DiscoveryCmdParams.BuildNewDiscoveryId();
try
{
result = protEE31.ExecuteCommand(EE31Command.Discovery, new DiscoveryCmdParams(discoveryId, busAddr, 0, 100));
}
catch { }
try
{
result = protEE31.ExecuteCommand(EE31Command.Discovery, new DiscoveryCmdParams(discoveryId, busAddr, 0, 50));
}
catch { }
if (result != null && result.Code == EECmdResultCode.Success)
{
return(device);
}
}
return(device);
}
else if (config is ScanConfigurationEmulation scanConfigurationEmulation)
{
IEECommDevice emulatedDevice = new EECommDeviceEmulation(0, scanConfigurationEmulation.EmulationDevicesSettings.ElementAt(0));
var existing = _foundDevices.FirstOrDefault(x => x.InterfaceType == InterfaceType.Emulation && x.InterfaceId == emulatedDevice.InterfaceId);
if (existing == null)
{
existing = emulatedDevice;
}
return(existing);
}
throw new NotImplementedException("Currently it is only possible to get UART or emulated devices.");
}