private static IEnumerable <string> EnumerateDevicePath(Guid guid)
{
var devicePathList = new List <string>();
var hDevInfo = SetupApi.SetupDiGetClassDevs(ref guid, IntPtr.Zero, IntPtr.Zero, SetupApi.DIGCF_PRESENT | SetupApi.DIGCF_DEVICEINTERFACE);
var spid = new SetupApi.SP_DEVICE_INTERFACE_DATA();
spid.cbSize = Marshal.SizeOf(spid);
int memberindex = 0;
while (SetupApi.SetupDiEnumDeviceInterfaces(hDevInfo, IntPtr.Zero, ref guid, memberindex, ref spid))
{
int bufferSize = 0;
SetupApi.SetupDiGetDeviceInterfaceDetail(hDevInfo, ref spid, IntPtr.Zero, 0, ref bufferSize, IntPtr.Zero);
var buffer = Marshal.AllocHGlobal(bufferSize);
Marshal.WriteInt32(buffer, (IntPtr.Size == 4) ? (4 + Marshal.SystemDefaultCharSize) : 8);
var da = new SetupApi.SP_DEVINFO_DATA();
da.cbSize = Marshal.SizeOf(da);
SetupApi.SetupDiGetDeviceInterfaceDetail(hDevInfo, ref spid, buffer, bufferSize, ref bufferSize, ref da);
IntPtr pDevicePathName = new IntPtr(buffer.ToInt64() + 4);
string pathName = Marshal.PtrToStringUni(pDevicePathName);
Marshal.FreeHGlobal(buffer);
buffer = IntPtr.Zero;
memberindex++;
Console.WriteLine(pathName);
devicePathList.Add(pathName);
}
return(devicePathList);
}
/// <summary>
/// Gets a list of <see cref="WinUsbRegistry"/> classes for the specified interface guid.
/// </summary>
/// <param name="deviceInterfaceGuid">The DeviceInterfaceGUID to search for.</param>
/// <param name="deviceRegistryList">A list of device paths associated with the <paramref name="deviceInterfaceGuid"/>.</param>
/// <returns>True of one or more device paths was found.</returns>
/// <remarks>
/// Each <see cref="WinUsbRegistry"/> in the <paramref name="deviceRegistryList"/> represents a seperate WinUSB device (interface).
/// </remarks>
public static bool GetWinUsbRegistryList(Guid deviceInterfaceGuid, out List <WinUsbRegistry> deviceRegistryList)
{
deviceRegistryList = new List <WinUsbRegistry>();
int devicePathIndex = 0;
SetupApi.SP_DEVICE_INTERFACE_DATA interfaceData = SetupApi.SP_DEVICE_INTERFACE_DATA.Empty;
SetupApi.DeviceInterfaceDetailHelper detailHelper;
SetupApi.SP_DEVINFO_DATA devInfoData = SetupApi.SP_DEVINFO_DATA.Empty;
// [1]
IntPtr deviceInfo = SetupApi.SetupDiGetClassDevs(ref deviceInterfaceGuid, null, IntPtr.Zero, SetupApi.DICFG.PRESENT | SetupApi.DICFG.DEVICEINTERFACE);
if (deviceInfo != IntPtr.Zero)
{
while ((SetupApi.SetupDiEnumDeviceInterfaces(deviceInfo, null, ref deviceInterfaceGuid, devicePathIndex, ref interfaceData)))
{
int length = 1024;
detailHelper = new SetupApi.DeviceInterfaceDetailHelper(length);
bool bResult = SetupApi.SetupDiGetDeviceInterfaceDetail(deviceInfo, ref interfaceData, detailHelper.Handle, length, out length, ref devInfoData);
if (bResult)
{
WinUsbRegistry regInfo = new WinUsbRegistry();
SetupApi.getSPDRPProperties(deviceInfo, ref devInfoData, regInfo.mDeviceProperties);
// Use the actual winusb device path for SYMBOLIC_NAME_KEY. This will be used to open the device.
regInfo.mDeviceProperties.Add(SYMBOLIC_NAME_KEY, detailHelper.DevicePath);
#if VERY_DEBUG
Debug.WriteLine(detailHelper.DevicePath);
#endif
regInfo.mDeviceInterfaceGuids = new Guid[] { deviceInterfaceGuid };
StringBuilder sbDeviceID = new StringBuilder(1024);
if (SetupApi.CM_Get_Device_ID(devInfoData.DevInst, sbDeviceID, sbDeviceID.Capacity, 0) == SetupApi.CR.SUCCESS)
{
regInfo.mDeviceProperties[DEVICE_ID_KEY] = sbDeviceID.ToString();
}
deviceRegistryList.Add(regInfo);
}
devicePathIndex++;
}
}
if (devicePathIndex == 0)
{
UsbError.Error(ErrorCode.Win32Error, Marshal.GetLastWin32Error(), "GetDevicePathList", typeof(SetupApi));
}
if (deviceInfo != IntPtr.Zero)
{
SetupApi.SetupDiDestroyDeviceInfoList(deviceInfo);
}
return(devicePathIndex > 0);
}
private string GetPath(IntPtr deviceInfoList, SetupApi.SP_DEVICE_INTERFACE_DATA deviceInfo)
{
var deviceInterfaceDetailData = IntPtr.Zero;
uint needed;
if (!SetupApi.SetupDiGetDeviceInterfaceDetail(deviceInfoList, ref deviceInfo,
IntPtr.Zero, 0,
out needed, IntPtr.Zero))
{
var error = Marshal.GetLastWin32Error();
if (error != 122)
{
return(string.Empty);
}
}
var spDeviceInterfaceData = new SetupApi.SP_DEVICE_INTERFACE_DATA();
spDeviceInterfaceData.cbSize = Marshal.SizeOf(spDeviceInterfaceData);
try {
deviceInterfaceDetailData = Marshal.AllocHGlobal((int)(8 + needed));
var size = IntPtr.Size == 8 ? 8 : 6;
Marshal.WriteInt32(deviceInterfaceDetailData, size);
if (!SetupApi.SetupDiGetDeviceInterfaceDetail(deviceInfoList, ref deviceInfo,
deviceInterfaceDetailData, needed, out needed, IntPtr.Zero))
{
var error = Marshal.GetLastWin32Error();
}
var pStr = IntPtr.Add(deviceInterfaceDetailData, sizeof(uint));
var path = Marshal.PtrToStringUni(pStr);
return(path);
} finally {
Marshal.FreeHGlobal(deviceInterfaceDetailData);
}
}
public KeyboardController()
{
// Get HID GUID.
Hid.HidD_GetHidGuid(out Guid hidGuid);
List <HidDevice> devs = new List <HidDevice>();
IntPtr classDevs = SetupApi.SetupDiGetClassDevs(ref hidGuid, IntPtr.Zero, IntPtr.Zero, DiGetClassFlags.Present | DiGetClassFlags.DeviceInterface);
try
{
// Enumerate HID devices.
for (uint index = 0;; ++index)
{
SP_DEVICE_INTERFACE_DATA deviceInterfaceData = new SP_DEVICE_INTERFACE_DATA {
cbSize = (uint)Marshal.SizeOf <SP_DEVICE_INTERFACE_DATA>()
};
if (!SetupApi.SetupDiEnumDeviceInterfaces(classDevs, IntPtr.Zero, ref hidGuid, index, ref deviceInterfaceData))
{
break; // End of list.
}
SP_DEVICE_INTERFACE_DETAIL_DATA deviceInterfaceDetailData = new SP_DEVICE_INTERFACE_DETAIL_DATA {
cbSize = IntPtr.Size == 8 ? 8U : (uint)(4 + Marshal.SystemDefaultCharSize)
};
SP_DEVINFO_DATA deviceInfoData = new SP_DEVINFO_DATA {
cbSize = (uint)Marshal.SizeOf <SP_DEVINFO_DATA>()
};
if (SetupApi.SetupDiGetDeviceInterfaceDetail(classDevs, ref deviceInterfaceData, ref deviceInterfaceDetailData, 256U, out uint requiredSize, ref deviceInfoData))
{
// Found one.
// Try to open device.
string devPath = deviceInterfaceDetailData.DevicePath;
SafeFileHandle devHandle = Kernel32.CreateFile(devPath, Kernel32.GENERIC_READ | Kernel32.GENERIC_WRITE,
Kernel32.FILE_SHARE_READ | Kernel32.FILE_SHARE_WRITE, IntPtr.Zero, Kernel32.CREATE_NEW | Kernel32.CREATE_ALWAYS, Kernel32.FILE_FLAG_OVERLAPPED, IntPtr.Zero);
// Get HID attributes.
HIDD_ATTRIBUTES attributes = default;
HIDP_CAPS caps;
Hid.HidD_GetAttributes(devHandle, ref attributes);
// Match against Gigabyte keyboard product IDs.
if (!supportedKeyboards.TryGetValue(attributes.VendorID, out ushort[] pids))
/// <summary>
/// Gets a list of WinUSB device paths for the specified interface guid.
/// </summary>
/// <param name="deviceInterfaceGuid">The DeviceInterfaceGUID to search for.</param>
/// <param name="devicePathList">A list of device paths associated with the <paramref name="deviceInterfaceGuid"/>.</param>
/// <returns>True of one or more device paths was found.</returns>
/// <remarks>
/// Each device path string in the <paramref name="devicePathList"/> represents a seperate WinUSB device (interface).
/// </remarks>
/// <seealso cref="GetWinUsbRegistryList"/>
public static bool GetDevicePathList(Guid deviceInterfaceGuid, out List <String> devicePathList)
{
devicePathList = new List <string>();
int devicePathIndex = 0;
SetupApi.SP_DEVICE_INTERFACE_DATA interfaceData = SetupApi.SP_DEVICE_INTERFACE_DATA.Empty;
SetupApi.DeviceInterfaceDetailHelper detailHelper;
IntPtr deviceInfo = SetupApi.SetupDiGetClassDevs(ref deviceInterfaceGuid, null, IntPtr.Zero, SetupApi.DICFG.PRESENT | SetupApi.DICFG.DEVICEINTERFACE);
if (deviceInfo != IntPtr.Zero)
{
while ((SetupApi.SetupDiEnumDeviceInterfaces(deviceInfo, null, ref deviceInterfaceGuid, devicePathIndex, ref interfaceData)))
{
int length = 1024;
detailHelper = new SetupApi.DeviceInterfaceDetailHelper(length);
bool bResult = SetupApi.SetupDiGetDeviceInterfaceDetail(deviceInfo, ref interfaceData, detailHelper.Handle, length, out length, null);
if (bResult)
{
devicePathList.Add(detailHelper.DevicePath);
}
devicePathIndex++;
}
}
if (devicePathIndex == 0)
{
UsbError.Error(ErrorCode.Win32Error, Marshal.GetLastWin32Error(), "GetDevicePathList", typeof(SetupApi));
}
if (deviceInfo != IntPtr.Zero)
{
SetupApi.SetupDiDestroyDeviceInfoList(deviceInfo);
}
return(devicePathIndex > 0);
}
public static bool FindHidDevices(ref List <string> DevicePathNames)
{
Debug.WriteLine("findHidDevices() -> Method called");
// Initialize the internal variables required for performing the search
var bufferSize = 0;
var detailDataBuffer = IntPtr.Zero;
bool deviceFound;
var deviceInfoSet = new IntPtr();
var lastDevice = false;
int listIndex;
var deviceInterfaceData = new SpDeviceInterfaceData();
// Get the required GUID
var systemHidGuid = new Guid();
Hid.HidD_GetHidGuid(ref systemHidGuid);
Debug.WriteLine(string.Format("findHidDevices() -> Fetched GUID for HID devices ({0})", systemHidGuid.ToString()));
try
{
// Here we populate a list of plugged-in devices matching our class GUID (DIGCF_PRESENT specifies that the list
// should only contain devices which are plugged in)
Debug.WriteLine("findHidDevices() -> Using SetupDiGetClassDevs to get all devices with the correct GUID");
deviceInfoSet = SetupApi.SetupDiGetClassDevs(ref systemHidGuid, IntPtr.Zero, IntPtr.Zero, Constants.DigcfPresent | Constants.DigcfDeviceinterface);
// Reset the deviceFound flag and the memberIndex counter
deviceFound = false;
listIndex = 0;
deviceInterfaceData.cbSize = Marshal.SizeOf(deviceInterfaceData);
// Look through the retrieved list of class GUIDs looking for a match on our interface GUID
do
{
//Debug.WriteLine("usbGenericHidCommunication:findHidDevices() -> Enumerating devices");
var success = SetupApi.SetupDiEnumDeviceInterfaces(deviceInfoSet, IntPtr.Zero, ref systemHidGuid, listIndex, ref deviceInterfaceData);
if (!success)
{
//Debug.WriteLine("usbGenericHidCommunication:findHidDevices() -> No more devices left - giving up");
lastDevice = true;
}
else
{
// The target device has been found, now we need to retrieve the device path so we can open
// the read and write handles required for USB communication
// First call is just to get the required buffer size for the real request
SetupApi.SetupDiGetDeviceInterfaceDetail
(deviceInfoSet,
ref deviceInterfaceData,
IntPtr.Zero,
0,
ref bufferSize,
IntPtr.Zero);
// Allocate some memory for the buffer
detailDataBuffer = Marshal.AllocHGlobal(bufferSize);
Marshal.WriteInt32(detailDataBuffer, (IntPtr.Size == 4) ? (4 + Marshal.SystemDefaultCharSize) : 8);
// Second call gets the detailed data buffer
//Debug.WriteLine("usbGenericHidCommunication:findHidDevices() -> Getting details of the device");
SetupApi.SetupDiGetDeviceInterfaceDetail
(deviceInfoSet,
ref deviceInterfaceData,
detailDataBuffer,
bufferSize,
ref bufferSize,
IntPtr.Zero);
// Skip over cbsize (4 bytes) to get the address of the devicePathName.
var pDevicePathName = new IntPtr(detailDataBuffer.ToInt32() + 4);
// Get the String containing the devicePathName.
DevicePathNames.Add(Marshal.PtrToStringAuto(pDevicePathName));
//Debug.WriteLine(string.Format("usbGenericHidCommunication:findHidDevices() -> Found matching device (memberIndex {0})", memberIndex));
deviceFound = true;
}
listIndex += 1;
}while (lastDevice != true);
}
catch (Exception)
{
// Something went badly wrong... output some debug and return false to indicated device discovery failure
Debug.WriteLine("findHidDevices() -> EXCEPTION: Something went south whilst trying to get devices with matching GUIDs - giving up!");
return(false);
}
finally
{
// Clean up the unmanaged memory allocations
if (detailDataBuffer != IntPtr.Zero)
{
// Free the memory allocated previously by AllocHGlobal.
Marshal.FreeHGlobal(detailDataBuffer);
}
if (deviceInfoSet != IntPtr.Zero)
{
SetupApi.SetupDiDestroyDeviceInfoList(deviceInfoSet);
}
}
if (deviceFound)
{
Debug.WriteLine(string.Format("findHidDevices() -> Found {0} devices with matching GUID", (DevicePathNames.Count).ToString(CultureInfo.InvariantCulture)));
}
else
{
Debug.WriteLine("findHidDevices() -> No matching devices found");
}
return(deviceFound);
}
public static bool FindHidDevices(ref string[] listOfDevicePathNames, ref int numberOfDevicesFound)
{
TmoShare.WriteLog("DeviceDiscovery:findHidDevices() -> 开始查找所有HID设备");
// Initialise the internal variables required for performing the search
var bufferSize = 0;
var detailDataBuffer = IntPtr.Zero;
bool deviceFound;
var deviceInfoSet = new IntPtr();
var lastDevice = false;
int listIndex;
var deviceInterfaceData = new SpDeviceInterfaceData();
// Get the required GUID
var systemHidGuid = new Guid();
Hid.HidD_GetHidGuid(ref systemHidGuid);
TmoShare.WriteLog(string.Format("DeviceDiscovery:findHidDevices() -> 找到HID设备全局 GUID {0}", systemHidGuid));
try
{
// Here we populate a list of plugged-in devices matching our class GUID (DIGCF_PRESENT specifies that the list
// should only contain devices which are plugged in)
TmoShare.WriteLog("DeviceDiscovery:findHidDevices() -> 获取所有HID设备句柄");
deviceInfoSet = SetupApi.SetupDiGetClassDevs(ref systemHidGuid, IntPtr.Zero, IntPtr.Zero, Constants.DigcfPresent | Constants.DigcfDeviceinterface);
// Reset the deviceFound flag and the memberIndex counter
deviceFound = false;
listIndex = 0;
deviceInterfaceData.cbSize = Marshal.SizeOf(deviceInterfaceData);
// Look through the retrieved list of class GUIDs looking for a match on our interface GUID
do
{
TmoShare.WriteLog("DeviceDiscovery:findHidDevices() -> 获取设备信息");
var success = SetupApi.SetupDiEnumDeviceInterfaces(deviceInfoSet, IntPtr.Zero, ref systemHidGuid, listIndex, ref deviceInterfaceData);
if (!success)
{
TmoShare.WriteLog("DeviceDiscovery:findHidDevices() -> 已经找到最后一个-停止");
lastDevice = true;
}
else
{
// The target device has been found, now we need to retrieve the device path so we can open
// the read and write handles required for USB communication
// First call is just to get the required buffer size for the real request
SetupApi.SetupDiGetDeviceInterfaceDetail
(deviceInfoSet,
ref deviceInterfaceData,
IntPtr.Zero,
0,
ref bufferSize,
IntPtr.Zero);
// Allocate some memory for the buffer
detailDataBuffer = Marshal.AllocHGlobal(bufferSize);
Marshal.WriteInt32(detailDataBuffer, (IntPtr.Size == 4) ? (4 + Marshal.SystemDefaultCharSize) : 8);
// Second call gets the detailed data buffer
TmoShare.WriteLog("DeviceDiscovery:findHidDevices() -> 获取设备详细信息");
SetupApi.SetupDiGetDeviceInterfaceDetail
(deviceInfoSet,
ref deviceInterfaceData,
detailDataBuffer,
bufferSize,
ref bufferSize,
IntPtr.Zero);
// Skip over cbsize (4 bytes) to get the address of the devicePathName.
var pDevicePathName = new IntPtr(detailDataBuffer.ToInt32() + 4);
// Get the String containing the devicePathName.
listOfDevicePathNames[listIndex] = Marshal.PtrToStringAuto(pDevicePathName).ToUpper();
TmoShare.WriteLog(string.Format("DeviceDiscovery:findHidDevices() -> 将找到的设备添加进列表 (索引 {0})", listIndex));
deviceFound = true;
listIndex++;
}
}while (lastDevice != true);
}
catch (Exception ex)
{
// Something went badly wrong... output some debug and return false to indicated device discovery failure
TmoShare.WriteLog("DeviceDiscovery:findHidDevices() -> 发生异常: " + ex.Message);
return(false);
}
finally
{
// Clean up the unmanaged memory allocations
if (detailDataBuffer != IntPtr.Zero)
{
// Free the memory allocated previously by AllocHGlobal.
Marshal.FreeHGlobal(detailDataBuffer);
}
if (deviceInfoSet != IntPtr.Zero)
{
SetupApi.SetupDiDestroyDeviceInfoList(deviceInfoSet);
}
}
if (deviceFound)
{
TmoShare.WriteLog(String.Format("DeviceDiscovery:findHidDevices() -> 一共找到{0}个HID设备", listIndex));
numberOfDevicesFound = listIndex;
}
else
{
TmoShare.WriteLog("DeviceDiscovery:findHidDevices() -> 没有找到HID设备");
}
return(deviceFound);
}
private string FindDevicePath()
{
var hidGuid = HidGuid;
var deviceInfoList = SetupApi.SetupDiGetClassDevs(ref hidGuid, null, IntPtr.Zero, DIGCF.DeviceInterface | DIGCF.Present);
if (IntPtr.Zero == deviceInfoList)
{
return(null);
}
try {
for (uint i = 0; ; i++)
{
var deviceInterfaceData = new SP_DEVICE_INTERFACE_DATA();
deviceInterfaceData.cbSize = (uint)Marshal.SizeOf(deviceInterfaceData);
if (!SetupApi.SetupDiEnumDeviceInterfaces(deviceInfoList, IntPtr.Zero, ref hidGuid, i, ref deviceInterfaceData))
{
break; // end of the list
}
var deviceInfoData = new SP_DEVINFO_DATA();
deviceInfoData.cbSize = (uint)Marshal.SizeOf(deviceInfoData);
if (!SetupApi.SetupDiEnumDeviceInfo(deviceInfoList, i, ref deviceInfoData))
{
continue;
}
const uint bufferSize = 1048;
var propertyBuffer = Marshal.AllocHGlobal((int)bufferSize);
try {
uint requiredSize;
uint propRegDataType;
if (!SetupApi.SetupDiGetDeviceRegistryProperty(
deviceInfoList, ref deviceInfoData, SPDRP.HardwareId, out propRegDataType,
propertyBuffer, bufferSize, out requiredSize)
)
{
continue;
}
var deviceId = Marshal.PtrToStringAuto(propertyBuffer, (int)requiredSize);
if (String.IsNullOrEmpty(deviceId) ||
!deviceId.ToUpperInvariant().Contains(_deviceIdUpper)
)
{
continue;
}
var deviceInterfaceDetailData = new SP_DEVICE_INTERFACE_DETAIL_DATA {
cbSize = IntPtr.Size == 8 ? 8 : (uint)(4 + Marshal.SystemDefaultCharSize)
};
var interfaceDetailOk = SetupApi.SetupDiGetDeviceInterfaceDetail(
deviceInfoList, ref deviceInterfaceData, ref deviceInterfaceDetailData,
SP_DEVICE_INTERFACE_DETAIL_DATA.BUFFER_SIZE, out requiredSize, ref deviceInfoData);
if (interfaceDetailOk)
{
return(deviceInterfaceDetailData.devicePath);
}
}
finally {
Marshal.FreeHGlobal(propertyBuffer);
}
}
}
finally {
SetupApi.SetupDiDestroyDeviceInfoList(deviceInfoList);
}
return(null);
}
public static List <string> FindAllHidDevices()
{
var listOfDevicePathNames = new List <string>();
var detailDataBuffer = IntPtr.Zero;
int listIndex = 0;
var deviceInterfaceData = new SpDeviceInterfaceData();
int lasterror = 0;
// Get the required HID class GUID
var systemHidGuid = new Guid();
Hid.HidD_GetHidGuid(ref systemHidGuid);
IntPtr deviceInfoSet = SetupDiGetClassDevs(ref systemHidGuid);
deviceInterfaceData.cbSize = Marshal.SizeOf(deviceInterfaceData);
try
{
// Look through the retrieved list of class GUIDs looking for a match on our interface GUID
// SetupDiEnumDeviceInterfaces will return false if it fails for any reason, including when no more items are left
// so we need to keep looping until the last thrown error is ERROR_NO_MORE_ITEMS
// Note: we post increment lastIndex so each subsequent call refers to a new device
while (SetupApi.SetupDiEnumDeviceInterfaces(deviceInfoSet, IntPtr.Zero, ref systemHidGuid, listIndex++, ref deviceInterfaceData) || (lasterror = Marshal.GetLastWin32Error()) != Constants.ERROR_NO_MORE_ITEMS)
{
if (lasterror != 0)
{
// SetupDiEnumDeviceInterfaces failed and it wasn't ERROR_NO_MORE_ITEMS as this would have stopped the loop
Debug.WriteLine("SetupDiEnumDeviceInterfaces failed for run {0} with error {1}", listIndex, lasterror);
continue;
}
int bufferSize = 0;
// The target device has been found, now we need to retrieve the device path so we can open
// the read and write handles required for USB communication
// First call fails with ERROR_INSUFFICIENT_BUFFER and is used just to get the required buffer size for the real request
var success = SetupApi.SetupDiGetDeviceInterfaceDetail(
deviceInfoSet,
ref deviceInterfaceData,
IntPtr.Zero,
0,
ref bufferSize,
IntPtr.Zero
);
// Allocate some memory for the buffer
detailDataBuffer = Marshal.AllocHGlobal(bufferSize);
Marshal.WriteInt32(detailDataBuffer, (IntPtr.Size == 4) ? (4 + Marshal.SystemDefaultCharSize) : 8);
// Second call gets the detailed data buffer
success = SetupApi.SetupDiGetDeviceInterfaceDetail(
deviceInfoSet,
ref deviceInterfaceData,
detailDataBuffer,
bufferSize,
ref bufferSize,
IntPtr.Zero
);
if (!success)
{
Debug.WriteLine("SetupDiGetDeviceInterfaceDetail failed for run {0} with error {1}", listIndex, Marshal.GetLastWin32Error());
continue;
}
// Skip over cbsize (4 bytes) to get the address of the devicePathName.
var pDevicePathName = IntPtr.Add(detailDataBuffer, 4);
// Get the String containing the devicePathName.
listOfDevicePathNames.Add(Marshal.PtrToStringAuto(pDevicePathName));
}
}
catch (Exception)
{
// Something went badly wrong...
listOfDevicePathNames.Clear();
}
finally
{
// Clean up the unmanaged memory allocations and free resources held by the windows API
Marshal.FreeHGlobal(detailDataBuffer);
SetupApi.SetupDiDestroyDeviceInfoList(deviceInfoSet);
}
return(listOfDevicePathNames);
}
public static IEnumerable <UsbController> GetControllers()
{
var hostGUID = new Guid(UsbConstants.GUID_DEVINTERFACE_HUBCONTROLLER);
var h = SetupApi.SetupDiGetClassDevs(ref hostGUID, default(int), IntPtr.Zero, UsbConstants.DIGCF_PRESENT | UsbConstants.DIGCF_DEVICEINTERFACE);
if (h.ToInt32() != UsbConstants.INVALID_HANDLE_VALUE)
{
var ptrBuf = Marshal.AllocHGlobal(UsbConstants.BUFFER_SIZE);
var i = default(int);
var success = default(bool);
do
{
var host = new UsbController(null)
{
ControllerIndex = i,
};
var dia = new SpDeviceInterfaceData();
dia.cbSize = Marshal.SizeOf(dia);
success = SetupApi.SetupDiEnumDeviceInterfaces(h, IntPtr.Zero, ref hostGUID, i, ref dia);
if (success)
{
var da = new SpDevinfoData();
da.cbSize = Marshal.SizeOf(da);
var didd = new SpDeviceInterfaceDetailData
{
cbSize = 4 + Marshal.SystemDefaultCharSize,
};
var nRequiredSize = default(int);
var nBytes = UsbConstants.BUFFER_SIZE;
if (SetupApi.SetupDiGetDeviceInterfaceDetail(h, ref dia, ref didd, nBytes, ref nRequiredSize, ref da))
{
host.ControllerDevicePath = didd.DevicePath;
var requiredSize = default(int);
var regType = UsbConstants.REG_SZ;
if (SetupApi.SetupDiGetDeviceRegistryProperty(h, ref da, UsbConstants.SPDRP_DEVICEDESC, ref regType, ptrBuf, UsbConstants.BUFFER_SIZE, ref requiredSize))
{
host.ControllerDeviceDesc = Marshal.PtrToStringAuto(ptrBuf);
}
if (SetupApi.SetupDiGetDeviceRegistryProperty(h, ref da, UsbConstants.SPDRP_DRIVER, ref regType, ptrBuf, UsbConstants.BUFFER_SIZE, ref requiredSize))
{
host.ControllerDriverKeyName = Marshal.PtrToStringAuto(ptrBuf);
}
}
yield return(host);
}
i++;
}while (success);
Marshal.FreeHGlobal(ptrBuf);
SetupApi.SetupDiDestroyDeviceInfoList(h);
}
}
public static UsbDevice FindDriveLetter(string driveName)
{
UsbDevice foundDevice = null;
var instanceID = string.Empty;
var devNum = UsbLogic.GetDeviceNumber($@"\\.\{driveName.TrimEnd('\\')}");
if (devNum < default(int))
{
return(foundDevice);
}
var diskGUID = new Guid(UsbConstants.GUID_DEVINTERFACE_DISK);
var h = SetupApi.SetupDiGetClassDevs(ref diskGUID, default(int), IntPtr.Zero, UsbConstants.DIGCF_PRESENT | UsbConstants.DIGCF_DEVICEINTERFACE);
if (h.ToInt32() != UsbConstants.INVALID_HANDLE_VALUE)
{
var i = default(int);
var success = true;
do
{
var dia = new SpDeviceInterfaceData();
dia.cbSize = Marshal.SizeOf(dia);
success = SetupApi.SetupDiEnumDeviceInterfaces(h, IntPtr.Zero, ref diskGUID, i, ref dia);
if (success)
{
var da = new SpDevinfoData();
da.cbSize = Marshal.SizeOf(da);
var didd = new SpDeviceInterfaceDetailData
{
cbSize = 4 + Marshal.SystemDefaultCharSize,
};
var nRequiredSize = default(int);
int nBytes = UsbConstants.BUFFER_SIZE;
if (SetupApi.SetupDiGetDeviceInterfaceDetail(h, ref dia, ref didd, nBytes, ref nRequiredSize, ref da))
{
if (UsbLogic.GetDeviceNumber(didd.DevicePath) == devNum)
{
SetupApi.CM_Get_Parent(out IntPtr ptrPrevious, da.DevInst, default(int));
var ptrInstanceBuf = Marshal.AllocHGlobal(nBytes);
SetupApi.CM_Get_Device_ID(ptrPrevious, ptrInstanceBuf, nBytes, default(int));
instanceID = Marshal.PtrToStringAuto(ptrInstanceBuf);
Marshal.FreeHGlobal(ptrInstanceBuf);
break;
}
}
}
i++;
} while (success);
SetupApi.SetupDiDestroyDeviceInfoList(h);
}
if (instanceID.StartsWith("USB\\"))
{
foundDevice = UsbLogic.FindDeviceByInstanceID(instanceID, driveName);
}
return(foundDevice);
}
private void _DeviceSearchThread()
{
_Logger.Info("Started");
while (_Running)
{
var loopStart = DateTime.Now;
#region Device enumeration
var devices = new List <UsbDevice>();
var detailDataBuffer = IntPtr.Zero;
var deviceInfoSet = IntPtr.Zero;
try
{
int listIndex = 0;
int lastError = 0;
var deviceInterfaceData = new SpDeviceInterfaceData();
var systemHidGuid = new Guid();
Hid.HidD_GetHidGuid(ref systemHidGuid);
deviceInfoSet = SetupApi.SetupDiGetClassDevs(ref systemHidGuid, IntPtr.Zero, IntPtr.Zero, Constants.DigcfPresent | Constants.DigcfDeviceinterface);
deviceInterfaceData.cbSize = Marshal.SizeOf(deviceInterfaceData);
while (SetupApi.SetupDiEnumDeviceInterfaces(deviceInfoSet, IntPtr.Zero, ref systemHidGuid, listIndex++, ref deviceInterfaceData) || (lastError = Marshal.GetLastWin32Error()) != Constants.ERROR_NO_MORE_ITEMS)
{
if (lastError == 0)
{
int bufferSize = 0;
SetupApi.SetupDiGetDeviceInterfaceDetail(deviceInfoSet, ref deviceInterfaceData, IntPtr.Zero, 0, ref bufferSize, IntPtr.Zero);
detailDataBuffer = Marshal.AllocHGlobal(bufferSize);
Marshal.WriteInt32(detailDataBuffer, (IntPtr.Size == 4) ? (4 + Marshal.SystemDefaultCharSize) : 8);
if (SetupApi.SetupDiGetDeviceInterfaceDetail(deviceInfoSet, ref deviceInterfaceData, detailDataBuffer, bufferSize, ref bufferSize, IntPtr.Zero))
{
var pDevicePathName = IntPtr.Add(detailDataBuffer, 4);
var devicePath = Marshal.PtrToStringAuto(pDevicePathName);
// Get device capabilities (to determine usage page)
using (var hidHandle = Kernel32.CreateFile(devicePath, 0, Constants.FileShareRead | Constants.FileShareWrite, IntPtr.Zero, Constants.OpenExisting, 0, 0))
{
var preparsedData = IntPtr.Zero;
try
{
preparsedData = new IntPtr();
Hid.HidD_GetPreparsedData(hidHandle, ref preparsedData);
var caps = new HidpCaps();
Hid.HidP_GetCaps(preparsedData, ref caps);
var attrs = new HiddAttributes();
Hid.HidD_GetAttributes(hidHandle, ref attrs);
// Only add the device if it has our VID, PID, and RAW usage page
var deviceClass = FindDeviceClass(attrs.VendorID, attrs.ProductID, attrs.VersionNumber, caps.UsagePage);
if (deviceClass != null)
{
var manufacturer = new StringBuilder(STRING_SIZE_LIMIT);
var product = new StringBuilder(STRING_SIZE_LIMIT);
var serial = new StringBuilder(STRING_SIZE_LIMIT);
Hid.HidD_GetManufacturerString(hidHandle, manufacturer, STRING_SIZE_LIMIT);
Hid.HidD_GetProductString(hidHandle, product, STRING_SIZE_LIMIT);
Hid.HidD_GetSerialNumberString(hidHandle, serial, STRING_SIZE_LIMIT);
var device = new UsbDevice(new DeviceInstance(deviceClass, devicePath, manufacturer.ToString(), product.ToString(), serial.ToString()), caps);
devices.Add(device);
}
}
finally
{
// Free up the memory before finishing
if (preparsedData != IntPtr.Zero)
{
Hid.HidD_FreePreparsedData(preparsedData);
}
}
}
}
}
}
}
catch (Exception ex)
{
_Logger.Error(ex, "Error scanning for devices:");
devices.Clear();
}
finally
{
// Clean up the unmanaged memory allocations and free resources held by the windows API
if (detailDataBuffer != IntPtr.Zero)
{
Marshal.FreeHGlobal(detailDataBuffer);
}
if (deviceInfoSet != IntPtr.Zero)
{
SetupApi.SetupDiDestroyDeviceInfoList(deviceInfoSet);
}
}
var addedDevices = devices.Except(_CurrentDevices);
var removedDevices = _CurrentDevices.Except(devices);
_CurrentDevices = devices;
if (DeviceRemoved != null)
{
foreach (var dev in removedDevices)
{
_Logger.Info("Device removed: {0}", dev);
DeviceRemoved(this, new DeviceEventArgs(dev.Instance));
}
}
if (DeviceAdded != null)
{
foreach (var dev in addedDevices)
{
_Logger.Info("Device added: {0}", dev);
DeviceAdded(this, new DeviceEventArgs(dev.Instance));
}
}
#endregion
#region Active device I/O
// If we receive a request to change the active device while we are processing messages, we need to stop immediately because they are about to become invalid
{
byte[] msg;
while (true)
{
byte[] response = null;
// Block until SetActiveDevice finishes
lock (_LockObject)
{
// If we created a new message queue in the call to SetActiveDevice, this will return false and we'll break out of the loop
if (_ActiveDevice == null || !_MessageQueue.TryDequeue(out msg))
{
break;
}
try
{
response = SendDeviceRequest(_ActiveDevice, msg);
}
catch (Exception ex)
{
_Logger.Error(ex, "Error communicating with device: {0} (0x{1:X8})", ex.Message, ex.HResult);
}
}
if (response != null)
{
ProcessResponse(msg, response);
}
else
{
_Logger.Error("Failed to read data from device. req = {0}", FormatByteArray(msg));
}
}
}
// Get LED config (it may have changed)
{
byte[] response = null;
byte[] msg = CreateSimpleMessage(hid_pkt_req.HID_PKT_REQ_CONFIG_LED_GET);
// Block until SetActiveDevice finishes
lock (_LockObject)
{
if (_ActiveDevice != null)
{
try
{
response = SendDeviceRequest(_ActiveDevice, msg);
}
catch (Exception ex)
{
_Logger.Error(ex, "Error communicating with device: {0} (0x{1:X8})", ex.Message, ex.HResult);
}
}
}
if (response != null)
{
ProcessResponse(msg, response);
}
}
// Get LED status
{
byte[] response = null;
byte[] msg = new byte[2];
msg[0] = (byte)hid_pkt_req.HID_PKT_REQ_LED_STATUS;
msg[1] = 0;
var ledStatuses = new List <LedColor>();
do
{
lock (_LockObject)
{
if (_ActiveDevice != null)
{
try
{
response = SendDeviceRequest(_ActiveDevice, msg);
}
catch (Exception ex)
{
_Logger.Error(ex, "Error communicating with device: {0} (0x{1:X8})", ex.Message, ex.HResult);
}
}
}
if (response != null)
{
// Parse response
for (byte i = 0; i < response[1] && i < 10; i++)
{
var led = new LedColor(
response[i * 3 + 2],
response[i * 3 + 3],
response[i * 3 + 4]
);
ledStatuses.Add(led);
}
msg[1] += 10;
}
} while (response != null && response[0] == (byte)hid_pkt_res.HID_PKT_RES_MORE);
LedStatusReceived?.Invoke(this, new LedStatusReceivedEventArgs(ledStatuses));
}
#endregion
// Wait until the entire loop execution is at least 100ms
var loopTime = DateTime.Now - loopStart;
if (loopTime < LOOP_DELAY)
{
var waitTime = LOOP_DELAY - loopTime;
Thread.Sleep(waitTime);
}
}
}