moel@87: /*
moel@87:
moel@344: This Source Code Form is subject to the terms of the Mozilla Public
moel@344: License, v. 2.0. If a copy of the MPL was not distributed with this
moel@344: file, You can obtain one at http://mozilla.org/MPL/2.0/.
moel@87:
moel@384: Copyright (C) 2009-2012 Michael Möller <mmoeller@openhardwaremonitor.org>
moel@344:
moel@87: */
moel@87:
moel@87: using System;
moel@87: using System.Runtime.InteropServices;
moel@87:
moel@87: namespace OpenHardwareMonitor.Hardware.TBalancer {
moel@87:
moel@165: internal enum FT_DEVICE : uint {
moel@186: FT_DEVICE_232BM,
moel@186: FT_DEVICE_232AM,
moel@87: FT_DEVICE_100AX,
moel@87: FT_DEVICE_UNKNOWN,
moel@186: FT_DEVICE_2232C,
moel@87: FT_DEVICE_232R,
moel@87: FT_DEVICE_2232H,
moel@87: FT_DEVICE_4232H
moel@87: }
moel@87:
moel@165: internal enum FT_STATUS {
moel@87: FT_OK,
moel@87: FT_INVALID_HANDLE,
moel@87: FT_DEVICE_NOT_FOUND,
moel@87: FT_DEVICE_NOT_OPENED,
moel@87: FT_IO_ERROR,
moel@87: FT_INSUFFICIENT_RESOURCES,
moel@87: FT_INVALID_PARAMETER,
moel@87: FT_INVALID_BAUD_RATE,
moel@87: FT_DEVICE_NOT_OPENED_FOR_ERASE,
moel@87: FT_DEVICE_NOT_OPENED_FOR_WRITE,
moel@87: FT_FAILED_TO_WRITE_DEVICE,
moel@87: FT_EEPROM_READ_FAILED,
moel@87: FT_EEPROM_WRITE_FAILED,
moel@87: FT_EEPROM_ERASE_FAILED,
moel@87: FT_EEPROM_NOT_PRESENT,
moel@87: FT_EEPROM_NOT_PROGRAMMED,
moel@87: FT_INVALID_ARGS,
moel@87: FT_OTHER_ERROR
moel@87: }
moel@87:
moel@165: internal enum FT_FLOW_CONTROL : ushort {
moel@87: FT_FLOW_DTR_DSR = 512,
moel@87: FT_FLOW_NONE = 0,
moel@87: FT_FLOW_RTS_CTS = 256,
moel@87: FT_FLOW_XON_XOFF = 1024,
moel@87: }
moel@87:
moel@165: internal enum FT_PURGE : uint {
moel@87: FT_PURGE_RX = 1,
moel@87: FT_PURGE_TX = 2,
moel@87: FT_PURGE_ALL = 3,
moel@87: }
moel@87:
moel@87: [StructLayout(LayoutKind.Sequential)]
moel@165: internal struct FT_HANDLE {
moel@195: private readonly uint handle;
moel@87: }
moel@87:
moel@87: [StructLayout(LayoutKind.Sequential)]
moel@165: internal struct FT_DEVICE_INFO_NODE {
moel@87: public uint Flags;
moel@87: public FT_DEVICE Type;
moel@87: public uint ID;
moel@87: public uint LocId;
moel@87: [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 16)]
moel@87: public string SerialNumber;
moel@87: [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 64)]
moel@87: public string Description;
moel@87: public FT_HANDLE Handle;
moel@87: }
moel@87:
moel@165: internal class FTD2XX {
moel@87:
moel@87: public delegate FT_STATUS FT_CreateDeviceInfoListDelegate(
moel@87: out uint numDevices);
moel@87: public delegate FT_STATUS FT_GetDeviceInfoListDelegate(
moel@87: [Out] FT_DEVICE_INFO_NODE[] deviceInfoNodes, ref uint length);
moel@87: public delegate FT_STATUS FT_OpenDelegate(int device, out FT_HANDLE handle);
moel@87: public delegate FT_STATUS FT_CloseDelegate(FT_HANDLE handle);
moel@87: public delegate FT_STATUS FT_SetBaudRateDelegate(FT_HANDLE handle,
moel@87: uint baudRate);
moel@87: public delegate FT_STATUS FT_SetDataCharacteristicsDelegate(
moel@87: FT_HANDLE handle, byte wordLength, byte stopBits, byte parity);
moel@87: public delegate FT_STATUS FT_SetFlowControlDelegate(FT_HANDLE handle,
moel@87: FT_FLOW_CONTROL flowControl, byte xon, byte xoff);
moel@87: public delegate FT_STATUS FT_SetTimeoutsDelegate(FT_HANDLE handle,
moel@87: uint readTimeout, uint writeTimeout);
moel@87: public delegate FT_STATUS FT_WriteDelegate(FT_HANDLE handle, byte[] buffer,
moel@87: uint bytesToWrite, out uint bytesWritten);
moel@87: public delegate FT_STATUS FT_PurgeDelegate(FT_HANDLE handle, FT_PURGE mask);
moel@87: public delegate FT_STATUS FT_GetStatusDelegate(FT_HANDLE handle,
moel@87: out uint amountInRxQueue, out uint amountInTxQueue, out uint eventStatus);
moel@87: public delegate FT_STATUS FT_ReadDelegate(FT_HANDLE handle,
moel@87: [Out] byte[] buffer, uint bytesToRead, out uint bytesReturned);
moel@384: public delegate FT_STATUS FT_ReadByteDelegate(FT_HANDLE handle,
moel@384: out byte buffer, uint bytesToRead, out uint bytesReturned);
moel@87:
moel@167: public static readonly FT_CreateDeviceInfoListDelegate
moel@167: FT_CreateDeviceInfoList = CreateDelegate<
moel@167: FT_CreateDeviceInfoListDelegate>("FT_CreateDeviceInfoList");
moel@167: public static readonly FT_GetDeviceInfoListDelegate
moel@167: FT_GetDeviceInfoList = CreateDelegate<
moel@167: FT_GetDeviceInfoListDelegate>("FT_GetDeviceInfoList");
moel@167: public static readonly FT_OpenDelegate
moel@167: FT_Open = CreateDelegate<
moel@167: FT_OpenDelegate>("FT_Open");
moel@167: public static readonly FT_CloseDelegate
moel@167: FT_Close = CreateDelegate<
moel@167: FT_CloseDelegate>("FT_Close");
moel@167: public static readonly FT_SetBaudRateDelegate
moel@167: FT_SetBaudRate = CreateDelegate<
moel@167: FT_SetBaudRateDelegate>("FT_SetBaudRate");
moel@167: public static readonly FT_SetDataCharacteristicsDelegate
moel@167: FT_SetDataCharacteristics = CreateDelegate<
moel@167: FT_SetDataCharacteristicsDelegate>("FT_SetDataCharacteristics");
moel@167: public static readonly FT_SetFlowControlDelegate
moel@167: FT_SetFlowControl = CreateDelegate<
moel@167: FT_SetFlowControlDelegate>("FT_SetFlowControl");
moel@167: public static readonly FT_SetTimeoutsDelegate
moel@167: FT_SetTimeouts = CreateDelegate<
moel@167: FT_SetTimeoutsDelegate>("FT_SetTimeouts");
moel@167: public static readonly FT_WriteDelegate
moel@167: FT_Write = CreateDelegate<
moel@167: FT_WriteDelegate>("FT_Write");
moel@167: public static readonly FT_PurgeDelegate
moel@167: FT_Purge = CreateDelegate<
moel@167: FT_PurgeDelegate>("FT_Purge");
moel@167: public static readonly FT_GetStatusDelegate
moel@167: FT_GetStatus = CreateDelegate<
moel@167: FT_GetStatusDelegate>("FT_GetStatus");
moel@167: public static readonly FT_ReadDelegate
moel@167: FT_Read = CreateDelegate<
moel@167: FT_ReadDelegate>("FT_Read");
moel@384: public static readonly FT_ReadByteDelegate
moel@384: FT_ReadByte = CreateDelegate<
moel@384: FT_ReadByteDelegate>("FT_Read");
moel@167:
moel@167: private FTD2XX() { }
moel@87:
moel@87: public static FT_STATUS Write(FT_HANDLE handle, byte[] buffer) {
moel@87: uint bytesWritten;
moel@87: FT_STATUS status = FT_Write(handle, buffer, (uint)buffer.Length,
moel@87: out bytesWritten);
moel@87: if (bytesWritten != buffer.Length)
moel@87: return FT_STATUS.FT_FAILED_TO_WRITE_DEVICE;
moel@87: else
moel@87: return status;
moel@87: }
moel@87:
moel@87: public static int BytesToRead(FT_HANDLE handle) {
moel@87: uint amountInRxQueue;
moel@87: uint amountInTxQueue;
moel@87: uint eventStatus;
moel@87: if (FT_GetStatus(handle, out amountInRxQueue, out amountInTxQueue,
moel@87: out eventStatus) == FT_STATUS.FT_OK) {
moel@87: return (int)amountInRxQueue;
moel@87: } else {
moel@87: return 0;
moel@87: }
moel@87: }
moel@87:
moel@87: public static byte ReadByte(FT_HANDLE handle) {
moel@384: byte buffer;
moel@87: uint bytesReturned;
moel@384: FT_STATUS status = FT_ReadByte(handle, out buffer, 1, out bytesReturned);
moel@87: if (status != FT_STATUS.FT_OK || bytesReturned != 1)
moel@167: throw new InvalidOperationException();
moel@384: return buffer;
moel@384: }
moel@384:
moel@384: public static void Read(FT_HANDLE handle, byte[] buffer) {
moel@384: uint bytesReturned;
moel@384: FT_STATUS status =
moel@384: FT_Read(handle, buffer, (uint)buffer.Length, out bytesReturned);
moel@384: if (status != FT_STATUS.FT_OK || bytesReturned != buffer.Length)
moel@384: throw new InvalidOperationException();
moel@87: }
moel@87:
moel@167: private static string GetDllName() {
moel@195: int p = (int)Environment.OSVersion.Platform;
moel@167: if ((p == 4) || (p == 128))
moel@167: return "libftd2xx.so";
moel@167: else
moel@167: return "ftd2xx.dll";
moel@167: }
moel@87:
moel@167: private static T CreateDelegate<T>(string entryPoint)
moel@87: where T : class {
moel@167: DllImportAttribute attribute = new DllImportAttribute(GetDllName());
moel@87: attribute.CallingConvention = CallingConvention.StdCall;
moel@87: attribute.PreserveSig = true;
moel@87: attribute.EntryPoint = entryPoint;
moel@167: T newDelegate;
moel@87: PInvokeDelegateFactory.CreateDelegate(attribute, out newDelegate);
moel@167: return newDelegate;
moel@87: }
moel@87: }
moel@87: }