private void SearchDevice(string PortName, AsyncOperation asyncOp)
{
SerialportChannel port = new SerialportChannel(PortName, 19200, ProtocolType.None);
port.MinimalTimeout = this.Timeout;
for (int i = 0; i < this.Protocols.Length && !this.SearchingStopped; i++)
{
port.RelkonProtocolType = this.Protocols[i];
for (int j = 0; j < this.BaudRates.Length && !this.SearchingStopped; j++)
{
port.BaudRate = this.BaudRates[j];
try
{
port.Open();
byte[] res = port.SendRequest(this.Request, this.Pattern.Length);
port.DiscardInBuffer();
if (res != null)
{
string s = Encoding.ASCII.GetString(res);
if (s.ToLower().Contains(this.Pattern.ToLower()) || s.ToLower().Contains(this.BootPattern.ToLower()))
{
// Устройство обнаружено
this.devicePort = port;
this.deviceResponse = res;
}
}
}
catch { }
finally
{
port.Close();
}
this.ChangeProgressMethod(asyncOp);
}
}
lock (this.requestingPorts)
{
this.requestingPorts.Remove(PortName);
if (this.requestingPorts.Count == 0)
{
if (this.devicePort != null)
{
this.CompletionMethod(this.devicePort, this.deviceResponse, null, false, asyncOp);
}
else
{
this.CompletionMethod(null, null, (this.canceled ? null : new Exception("Устройство не найдено")), this.canceled, asyncOp);
}
}
}
}
private SerialPort _serialPort = null; // обеспечивает рабоу с COM-портом
public SerialportChannel(SerialportChannel channel)
{
_serialPort = channel.DirectPort;
_relkonProtocolType = channel.RelkonProtocolType;
}
public DeviceSearchCompletedEventArgs(SerialportChannel Port, byte[] DeviceResponse, Exception e, bool canceled)
: base(e, canceled, null)
{
this.Port = Port;
this.DeviceResponse = DeviceResponse;
}
} // описывает порт, к которому подключено устройство
/// <summary>
/// Создает новый экземпляр класса DeviceSearchCompleetedEventArgs (рекомендуется
/// использовать при успешном завершении поиска)
/// </summary>
/// <param name="Port">Порт, к которому подключено устройство</param>
/// <param name="DeviceResponse">Ответ устройства</param>
public DeviceSearchCompletedEventArgs(SerialportChannel Port, byte[] DeviceResponse)
: base(null, false, null)
{
this.Port = Port;
this.DeviceResponse = DeviceResponse;
}
/// <summary>
/// Запускает поиск устройства
/// </summary>
public void StartSearch()
{
lock (this.requestingPorts)
{
if (this.requestingPorts.Count != 0)
{
throw new Exception("Поиск устройства уже запущен, необходимо дождаться завершения");
}
}
this.deviceResponse = null;
this.canceled = false;
if (devicePort != null)
{
byte[] res = { };
try
{
devicePort.Open();
res = devicePort.SendRequest(this.Request, this.Pattern.Length);
if (res != null && (Encoding.ASCII.GetString(res).ToLower().Contains(this.Pattern.ToLower()) ||
Encoding.ASCII.GetString(res).ToLower().Contains(this.BootPattern.ToLower())))
{
this.deviceResponse = res;
}
}
catch { }
finally
{
devicePort.Close();
}
}
if (deviceResponse != null)
{
DeviceSearchCompletedEventArgs e = new DeviceSearchCompletedEventArgs(this.devicePort, this.deviceResponse, null, canceled);
if (this.DeviceSearchCompleted != null)
{
this.DeviceSearchCompleted(this, e);
}
}
else
{
this.devicePort = null;
this.progress = 0;
this.portsCount = 0;
string[] portNames = SerialPort.GetPortNames();
this.portsCount = portNames.Length;
foreach (string portName in portNames)
{
if (!this.requestingPorts.Keys.Contains(portName))
{
WorkerEventHandler workerDelegate = new WorkerEventHandler(this.SearchDevice);
AsyncOperation asyncOp = AsyncOperationManager.CreateOperation(portName);
this.requestingPorts.Add(portName, asyncOp);
workerDelegate.BeginInvoke(portName, asyncOp, null, null);
}
}
}
}
private void CompletionMethod(SerialportChannel port, byte[] response, Exception exception, bool canceled, AsyncOperation asyncOp)
{
DeviceSearchCompletedEventArgs e = new DeviceSearchCompletedEventArgs(port, response, exception, canceled);
asyncOp.PostOperationCompleted(onCompletedDelegate, e);
}
