private bool ConnectTo(EndPoint endpoint)
{
m_ConnectionStage = CONNECTION_STAGE.CS_CONNECTING;
try
{
m_Socket.Connect(endpoint);
if (m_Socket.Connected)
{
m_ConnectionStage = CONNECTION_STAGE.CS_CONNECTED;
if (ConnectionStateChanged != null)
{
ConnectionStateChanged.Invoke(this, (int)GARANT_EEG_DEVICE_CONNECTION_STATE.DCS_NO_ERROR);
}
StartRecv();
}
else
{
m_ConnectionStage = CONNECTION_STAGE.CS_CONNECTION_ERROR;
if (ConnectionStateChanged != null)
{
ConnectionStateChanged.Invoke(this, (int)GARANT_EEG_DEVICE_CONNECTION_STATE.DCS_HOST_NOT_REACHED);
}
}
}
catch (SocketException e)
{
m_ConnectionStage = CONNECTION_STAGE.CS_CONNECTION_ERROR;
if (ConnectionStateChanged != null)
{
ConnectionStateChanged.Invoke(this, (int)GARANT_EEG_DEVICE_CONNECTION_STATE.DCS_HOST_NOT_REACHED);
}
return(false);
}
return(m_ConnectionStage == CONNECTION_STAGE.CS_CONNECTED);
}
/**
* @brief Stop Остановить работу с устройством
*/
public void Stop()
{
if (!m_Started)
{
return;
}
StopRecord();
m_Started = false;
m_TranslationPaused = false;
m_Socket.Shutdown(SocketShutdown.Both);
m_ConnectionStage = CONNECTION_STAGE.CS_NONE;
m_HeaderData = null;
m_PrevData = null;
m_RecvBuffer = null;
m_PacketBuffer = null;
m_FileWriteBuffer = null;
m_Socket = null;
}
/**
* @brief Start Функция старта работы с устройством
* @param waitForConnection Ожидать ли подключения или подключиться к оборудованию в асинхронном режиме
* @param rate Частота работы устройства (250/500/1000)
* @param host IP-адрес для подключения
* @param port Порт для подключения
* @return true если подключено (или подключение началось, для асинхронного режима)
*/
public bool Start(bool waitForConnection = true, int rate = 500, string host = "192.168.127.125", int port = 12345)
{
if (m_Started || m_ConnectionStage == CONNECTION_STAGE.CS_CONNECTED)
{
return(true);
}
else if (m_ConnectionStage == CONNECTION_STAGE.CS_CONNECTING)
{
return(false);
}
IPAddress address = ResolveIP(host);
if (address == null)
{
return(false);
}
m_ConnectionStage = CONNECTION_STAGE.CS_NONE;
m_Started = false;
m_Recording = false;
m_RecordPaused = false;
m_TranslationPaused = false;
m_Rate = rate;
switch (m_Rate)
{
case 250:
{
DATA_SIZE = 765;
break;
}
case 500:
{
DATA_SIZE = 1365;
break;
}
case 1000:
{
DATA_SIZE = 2565;
break;
}
default:
break;
}
WRITE_FILE_BUFFER_SIZE = DATA_SIZE * 10 * 30; //10 - count of records per second, 30 seconds record
m_Host = host;
m_Port = port;
m_NTPMessage = "";
m_SendBuffer = "";
m_Socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp)
{
ReceiveBufferSize = BUFF_SIZE, SendBufferSize = BUFF_SIZE
};
m_Socket.SetSocketOption(SocketOptionLevel.Tcp, SocketOptionName.NoDelay, 1);
m_HeaderData = new List <byte>();
m_PrevData = new List <byte>();
m_RecvBuffer = new byte[BUFF_SIZE];
m_PacketBuffer = new List <byte>();
m_FileWriteBuffer = new List <byte>();
m_Socket.ReceiveTimeout = -1;
m_Socket.SendTimeout = -1;
IPEndPoint endpoint = new IPEndPoint(address, port);
if (waitForConnection)
{
m_Started = ConnectTo(endpoint);
if (m_Started)
{
SendPacket(string.Format("start -protect eeg.rate {0}\r\n", m_Rate));
}
}
else
{
Task.Run(() =>
{
m_Started = ConnectTo(endpoint);
if (m_Started)
{
SendPacket(string.Format("start -protect eeg.rate {0}\r\n", m_Rate));
}
});
}
while (waitForConnection && m_ConnectionStage < CONNECTION_STAGE.CS_CONNECTED)
{
Thread.Sleep(1);
}
if (waitForConnection)
{
return(m_ConnectionStage == CONNECTION_STAGE.CS_CONNECTED);
}
return(true);
}
