public override string Communicate(ParameterIdentification pid, int timeout = 300)
{
// check if the header needs to be set
if (pid.Header != currentJ1850Header &&
!string.IsNullOrEmpty(pid.Header))
{
string response = SendCommand(Protocols.Elm327.SetFrameHeader(pid.Header));
if (!response.Contains(Protocols.Elm327.Responses.OK))
{
Diagnostics.DiagnosticLogger.Log("Could not set frame header for PID" + System.Environment.NewLine + pid.ToString());
return(null);
}
}
else if (string.IsNullOrEmpty(pid.Header))
{
string response = SendCommand(Protocols.Elm327.SetFrameHeader(Protocols.J1850.Headers.Default));
if (!response.Contains(Protocols.Elm327.Responses.OK))
{
Diagnostics.DiagnosticLogger.Log("Could not set default frame header for PID" + System.Environment.NewLine + pid.ToString());
return(null);
}
}
return(pid.SimulatedResponse(this.Protocol));
}
public override string Communicate(ParameterIdentification pid, int timeout = 300)
{
// only the J1850 protocol needs to set the header,
// CAN and others do not have the same set-header commands
if (Protocol == Protocols.Protocol.J1850)
{
// check if the header needs to be set
if (//pid.Header != currentJ1850Header &&
!string.IsNullOrEmpty(pid.Header))
{
if (lastFrameHeader != pid.Header)
{
string response = SendCommand(Protocols.Elm327.SetFrameHeader(pid.Header));
if (!response.Contains(Protocols.Elm327.Responses.OK))
{
Diagnostics.DiagnosticLogger.Log("Could not set frame header for PID" + System.Environment.NewLine + pid.ToString());
return(null);
}
lastFrameHeader = pid.Header;
}
}
else if (string.IsNullOrEmpty(pid.Header))
{
if (lastFrameHeader != Protocols.J1850.Headers.Default)
{
string response = SendCommand(Protocols.Elm327.SetFrameHeader(Protocols.J1850.Headers.Default));
if (!response.Contains(Protocols.Elm327.Responses.OK))
{
Diagnostics.DiagnosticLogger.Log("Could not set default frame header for PID" + System.Environment.NewLine + pid.ToString());
return(null);
}
lastFrameHeader = Protocols.J1850.Headers.Default;
}
}
}
// send the pid value first
if (Send(pid))
{
//System.Threading.Thread.Sleep(100); // FIXME: find a better way to wait for the entire data packet than just sleeping
// if sending was successful then try to receive
return(Receive(timeout));
}
// sending did not work, return false
return(null);
}