FTD2XX_NET.FTDI.Purge C# (CSharp) Method

        public FT_STATUS Purge(UInt32 purgemask)
        {
            // Initialise ftStatus to something other than FT_OK
            FT_STATUS ftStatus = FT_STATUS.FT_OTHER_ERROR;

            // If the DLL hasn't been loaded, just return here
            if (hFTD2XXDLL == IntPtr.Zero)
                return ftStatus;

            // Check for our required function pointers being set up
            if (pFT_Purge != IntPtr.Zero)
            {
                tFT_Purge FT_Purge = (tFT_Purge)Marshal.GetDelegateForFunctionPointer(pFT_Purge, typeof(tFT_Purge));

                if (ftHandle != IntPtr.Zero)
                {
                    // Call FT_Purge
                    ftStatus = FT_Purge(ftHandle, purgemask);
                }
            }
            else
            {
                if (pFT_Purge == IntPtr.Zero)
                {
                    LogB.Debug("FTD2XX: Failed to load function FT_Purge.");
                }
            }
            return ftStatus;
        }

        protected bool OpenFTDIDevice(FTDI.FT_DEVICE_INFO_NODE deviceToOpen)
        {
            bool connected = false;

            lock (mFTDIDevice)
            {
                if (IsFTDIDeviceOpen())
                {
                    CloseFTDIDevice();
                }

                if (FTDI.IsFTD2XXDLLLoaded())
                {
                    if (deviceToOpen != null)
                    {
                        if (mFTDIDevice.OpenByLocation(deviceToOpen.LocId) == FTDI.FT_STATUS.FT_OK)
                        {
                            FTDI.FT_STATUS ftdiStatus = FTDI.FT_STATUS.FT_OK;

                            ftdiStatus |= mFTDIDevice.ResetDevice();
                            //ftdiStatus |= mFTDIDevice.ResetPort();
                            ftdiStatus |= mFTDIDevice.Purge(FTDI.FT_PURGE.FT_PURGE_RX | FTDI.FT_PURGE.FT_PURGE_TX);

                            if (ftdiStatus == FTDI.FT_STATUS.FT_OK)
                            {
                                DisplayStatusMessage("Opened FTDI device.", StatusMessageType.LOG);
                                DisplayStatusMessage("FTDI device info - Description: " + deviceToOpen.Description
                                                     + " Serial Number: " + deviceToOpen.SerialNumber + " Device Type: " + deviceToOpen.Type
                                                     + " ID: 0x" + deviceToOpen.ID.ToString("X") + " Device Flags: 0x" + deviceToOpen.Flags.ToString("X"), StatusMessageType.LOG);

                                if (FTDI.IsFTDChipIDDLLLoaded())
                                {
                                    DisplayStatusMessage("FTDI ChipID DLL is loaded, checking chip ID...", StatusMessageType.LOG);

                                    uint chipID = 0;
                                    if (mFTDIDevice.GetChipIDFromCurrentDevice(out chipID) == FTDI.FT_STATUS.FT_OK)
                                    {
                                        DisplayStatusMessage("FTDI device chip ID: 0x" + chipID.ToString("X"), StatusMessageType.LOG);
                                    }
                                    else
                                    {
                                        DisplayStatusMessage("Unable to read FTDI device chip ID", StatusMessageType.LOG);
                                    }
                                }

                                connected = true;
                            }
                            else
                            {
                                mFTDIDevice.Close();
                            }
                        }
                        else
                        {
                            DisplayStatusMessage("Could not open FTDI device", StatusMessageType.LOG);
                        }
                    }
                    else
                    {
                        DisplayStatusMessage("No FTDI device selected", StatusMessageType.LOG);
                    }
                }
                else
                {
                    DisplayStatusMessage("FTDI FTD2XX device driver DLL could not be loaded.", StatusMessageType.USER);
                }
            }

            return(connected);
        }