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Scott Bissmeyer
2025-04-07 07:44:27 -07:00
commit d6cde0c05e
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LibreHardwareMonitor-0.9.4/LibreHardwareMonitorLib/Interop/Ftd2xx.cs Normal file
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// This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
// If a copy of the MPL was not distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
// Copyright (C) LibreHardwareMonitor and Contributors.
// All Rights Reserved.
using System;
using System.Runtime.InteropServices;
// ReSharper disable InconsistentNaming
namespace LibreHardwareMonitor.Interop;
internal static class Ftd2xx
{
private const string DllName = "Ftd2xx.dll";
public static bool DllExists()
{
IntPtr module = Kernel32.LoadLibrary(DllName);
if (module == IntPtr.Zero)
return false;
Kernel32.FreeLibrary(module);
return true;
}
[DllImport(DllName)]
[DefaultDllImportSearchPaths(DllImportSearchPath.System32)]
public static extern FT_STATUS FT_CreateDeviceInfoList(out uint numDevices);
[DllImport(DllName)]
[DefaultDllImportSearchPaths(DllImportSearchPath.System32)]
public static extern FT_STATUS FT_GetDeviceInfoList([Out] FT_DEVICE_INFO_NODE[] deviceInfoNodes, ref uint length);
[DllImport(DllName)]
[DefaultDllImportSearchPaths(DllImportSearchPath.System32)]
public static extern FT_STATUS FT_Open(int device, out FT_HANDLE handle);
[DllImport(DllName)]
[DefaultDllImportSearchPaths(DllImportSearchPath.System32)]
public static extern FT_STATUS FT_Close(FT_HANDLE handle);
[DllImport(DllName)]
[DefaultDllImportSearchPaths(DllImportSearchPath.System32)]
public static extern FT_STATUS FT_SetBaudRate(FT_HANDLE handle, uint baudRate);
[DllImport(DllName)]
[DefaultDllImportSearchPaths(DllImportSearchPath.System32)]
public static extern FT_STATUS FT_SetDataCharacteristics(FT_HANDLE handle, byte wordLength, byte stopBits, byte parity);
[DllImport(DllName)]
[DefaultDllImportSearchPaths(DllImportSearchPath.System32)]
public static extern FT_STATUS FT_SetFlowControl(FT_HANDLE handle, FT_FLOW_CONTROL flowControl, byte xon, byte xoff);
[DllImport(DllName)]
[DefaultDllImportSearchPaths(DllImportSearchPath.System32)]
public static extern FT_STATUS FT_SetTimeouts(FT_HANDLE handle, uint readTimeout, uint writeTimeout);
[DllImport(DllName)]
[DefaultDllImportSearchPaths(DllImportSearchPath.System32)]
public static extern FT_STATUS FT_Write(FT_HANDLE handle, byte[] buffer, uint bytesToWrite, out uint bytesWritten);
[DllImport(DllName)]
[DefaultDllImportSearchPaths(DllImportSearchPath.System32)]
public static extern FT_STATUS FT_Purge(FT_HANDLE handle, FT_PURGE mask);
[DllImport(DllName)]
[DefaultDllImportSearchPaths(DllImportSearchPath.System32)]
public static extern FT_STATUS FT_GetStatus(FT_HANDLE handle, out uint amountInRxQueue, out uint amountInTxQueue, out uint eventStatus);
[DllImport(DllName)]
[DefaultDllImportSearchPaths(DllImportSearchPath.System32)]
public static extern FT_STATUS FT_Read(FT_HANDLE handle, [Out] byte[] buffer, uint bytesToRead, out uint bytesReturned);
[DllImport(DllName)]
[DefaultDllImportSearchPaths(DllImportSearchPath.System32)]
public static extern FT_STATUS FT_ReadByte(FT_HANDLE handle, out byte buffer, uint bytesToRead, out uint bytesReturned);
public static FT_STATUS Write(FT_HANDLE handle, byte[] buffer)
{
FT_STATUS status = FT_Write(handle, buffer, (uint)buffer.Length, out uint bytesWritten);
if (bytesWritten != buffer.Length)
return FT_STATUS.FT_FAILED_TO_WRITE_DEVICE;
return status;
}
public static int BytesToRead(FT_HANDLE handle)
{
if (FT_GetStatus(handle, out uint amountInRxQueue, out uint _, out uint _) == FT_STATUS.FT_OK)
return (int)amountInRxQueue;
return 0;
}
public static byte ReadByte(FT_HANDLE handle)
{
FT_STATUS status = FT_ReadByte(handle, out byte buffer, 1, out uint bytesReturned);
if (status != FT_STATUS.FT_OK || bytesReturned != 1)
throw new InvalidOperationException();
return buffer;
}
public static void Read(FT_HANDLE handle, byte[] buffer)
{
FT_STATUS status = FT_Read(handle, buffer, (uint)buffer.Length, out uint bytesReturned);
if (status != FT_STATUS.FT_OK || bytesReturned != buffer.Length)
throw new InvalidOperationException();
}
internal enum FT_DEVICE : uint
{
FT_DEVICE_232BM,
FT_DEVICE_232AM,
FT_DEVICE_100AX,
FT_DEVICE_UNKNOWN,
FT_DEVICE_2232C,
FT_DEVICE_232R,
FT_DEVICE_2232H,
FT_DEVICE_4232H
}
internal enum FT_STATUS
{
FT_OK,
FT_INVALID_HANDLE,
FT_DEVICE_NOT_FOUND,
FT_DEVICE_NOT_OPENED,
FT_IO_ERROR,
FT_INSUFFICIENT_RESOURCES,
FT_INVALID_PARAMETER,
FT_INVALID_BAUD_RATE,
FT_DEVICE_NOT_OPENED_FOR_ERASE,
FT_DEVICE_NOT_OPENED_FOR_WRITE,
FT_FAILED_TO_WRITE_DEVICE,
FT_EEPROM_READ_FAILED,
FT_EEPROM_WRITE_FAILED,
FT_EEPROM_ERASE_FAILED,
FT_EEPROM_NOT_PRESENT,
FT_EEPROM_NOT_PROGRAMMED,
FT_INVALID_ARGS,
FT_OTHER_ERROR
}
internal enum FT_FLOW_CONTROL : ushort
{
FT_FLOW_DTR_DSR = 512,
FT_FLOW_NONE = 0,
FT_FLOW_RTS_CTS = 256,
FT_FLOW_XON_XOFF = 1024
}
internal enum FT_PURGE : uint
{
FT_PURGE_RX = 1,
FT_PURGE_TX = 2,
FT_PURGE_ALL = 3
}
[StructLayout(LayoutKind.Sequential)]
internal struct FT_HANDLE
{
private readonly IntPtr _handle;
}
[StructLayout(LayoutKind.Sequential)]
internal struct FT_DEVICE_INFO_NODE
{
public uint Flags;
public FT_DEVICE Type;
public uint ID;
public uint LocId;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 16)]
public string SerialNumber;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 64)]
public string Description;
public FT_HANDLE Handle;
}
}