/// <summary>
/// Initialize handshake
/// </summary>
public void StartHandshake()
{
string handshake = "{\"serial_handshake\":\"init\"}";
Debug.Log("Initializing handshake...");
Debug.Log(connectionStatus);
ThreadHelper.SetCOMConnectionStatus("Initializing handshake");
WriteData(handshake);
}
private void ConnectAcceptResponse()
{
Debug.Log("Accepting connect response");
WriteData("{\"connect\":\"ok\"}");
if (OnConnected_cb != null)
{
OnConnected_cb.Invoke(this);
}
ThreadHelper.SetCOMConnectionStatus("Waiting for available data");
connectionStatus = ConnectionStatus.Connected;
}
/// <summary>
/// The method to invoke when data is received on the serial port communication channel
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void OnDataReceived(object sender, SerialDataReceivedEventArgs e)
{
string input = String.Empty;
if (connectionStatus == ConnectionStatus.Disconnected || !connection.IsOpen)
{
ThreadHelper.SetCOMConnectionStatus("Disconnected");
Debug.Log("Serial not connected");
return;
}
try
{
//Debug.Log("Receiving...");
input = connection.ReadLine();
Debug.Log(input);
//Debug.Log(ConnectionStatus);
JObject inputParsed = Parse(input);
if (inputParsed != null)
{
if (connectionStatus == ConnectionStatus.Handshake && inputParsed.ContainsKey("serial_handshake"))
{
//if (inputParsed["serial_handshake"].ToObject<string>() != "failed")
if (true)
{
available_settings = inputParsed["serial_handshake"].ToObject <SerialSettingsCollection>();
if (HandshakeResponse_callback != null)
{
InvokeHandshakeResponseCallback(available_settings);
}
}
else
{
// Handshake failed
}
}
if (ConnectionStatus == ConnectionStatus.WaitingConnectInit && inputParsed.ContainsKey("connect"))
{
string param = inputParsed["connect"].ToObject <string>();
if (param == "init")
{
ConnectAcceptResponse();
}
}
if (ConnectionStatus == ConnectionStatus.Connected)
{
ThreadHelper.SetCOMConnectionStatus("Connected to " + stream_label);
DeliverSubscriptions();
}
}
}
catch (Newtonsoft.Json.JsonReaderException ex)
{
Debug.Log("Invalid JSON");
Debug.Log(ex);
}
catch (TimeoutException ex)
{
Debug.Log("Serial.OnDataReceived timeout exception captured\nSettings:");
Debug.Log(connection.BaudRate);
Debug.Log(ex);
if (connection.IsOpen)
{
Debug.Log(connection.ReadExisting());
connection.Close();
}
}
catch (Exception ex)
{
Debug.Log("Exception caught in SerialHandler.OnDataReceived()");
Debug.Log(input);
Debug.Log(ex);
}
if (!connection.IsOpen)
{
if (Program.settings.comSettings.baud_rate != 0)
{
connection.BaudRate = Program.settings.comSettings.baud_rate;
connection.Parity = default_settings.Parity;
connection.DataBits = default_settings.DataBits;
connection.StopBits = default_settings.StopBits;
connection.NewLine = default_settings.NewLine;
}
try
{
Debug.Log("Reopening connection...");
connection.Open();
}
catch (Exception) { }
}
}