public unsafe static IntPtr OpenDevice(string devicePath, bool sync)
{
uint fileAttributes = UsbNativeApi.FILE_ATTRIBUTE_NORMAL;
if (!sync)
{
fileAttributes |= UsbNativeApi.FILE_FLAG_OVERLAPPED;
}
return((IntPtr)UsbNativeApi.CreateFile(devicePath,
UsbNativeApi.GENERIC_WRITE | UsbNativeApi.GENERIC_READ,
UsbNativeApi.FILE_SHARE_WRITE | UsbNativeApi.FILE_SHARE_READ,
0, // default security
UsbNativeApi.OPEN_EXISTING,
fileAttributes,
0));
}
public unsafe static List <string> GetDevices(string identification, string classGuid)
{
string devicePath = string.Empty;
int deviceNumber = 0;
int hardwareDevInfo = 0;
UsbNativeType.GUID guid;
List <string> devices = new List <string>();
if (classGuid != null)
{
guid = ParseClassGuid(classGuid);
}
else
{
// falback to human interface devices GUID class
guid = new UsbNativeType.GUID();
UsbNativeApi.HidD_GetHidGuid(ref guid);
}
hardwareDevInfo = UsbNativeApi.SetupDiGetClassDevs(
ref guid,
null,
null,
UsbNativeApi.DIGCF_INTERFACEDEVICE | UsbNativeApi.DIGCF_PRESENT);
// iterate through the available GUID interface devices
while (true)
{
devicePath = GetDevicePath(guid, hardwareDevInfo, deviceNumber);
if ((devicePath == null) || devicePath.Equals(String.Empty))
{
UsbNativeApi.SetupDiDestroyDeviceInfoList(hardwareDevInfo);
return(devices);
}
// get 2Virt devices interfaces only
if ((identification == null) || (devicePath.ToUpper().IndexOf(identification) > 0))
{
devices.Add(devicePath);
}
deviceNumber++;
}
}
public unsafe static IoStatus DeviceIoControl(IntPtr handle, IOCTLcommand command)
{
GCHandle hInput = new GCHandle();
GCHandle hOutput = new GCHandle();
IoStatus status = new IoStatus();
status.buffer = new byte[command.outputMaxSize];
status.size = 0;
status.error = USBError.SUCCESS;
try
{
// pin the buffers into place
hInput = GCHandle.Alloc(command.inputBuffer, GCHandleType.Pinned);
hOutput = GCHandle.Alloc(status.buffer, GCHandleType.Pinned);
if (UsbNativeApi.DeviceIoControl(
handle,
command.ioctlNo,
hInput.AddrOfPinnedObject(), (command.inputBuffer == null) ? 0 : (uint)command.inputBuffer.Length,
hOutput.AddrOfPinnedObject(), (uint)command.outputMaxSize,
ref status.size,
(IntPtr)0) != 0)
{
status.error = USBError.WIN_API_SPECIFIC;
}
}
finally
{
if (hInput.IsAllocated)
{
hInput.Free();
}
if (hOutput.IsAllocated)
{
hOutput.Free();
}
}
return(status);
}
private unsafe static string GetDevicePath(UsbNativeType.GUID guid, int hardwareDevInfo, int device_number)
{
int result = 0;
UsbNativeType.SP_DEVICE_INTERFACE_DATA interfaceData = new UsbNativeType.SP_DEVICE_INTERFACE_DATA();
interfaceData.cbSize = Marshal.SizeOf(interfaceData);
// get the device_number device interface
result = UsbNativeApi.SetupDiEnumDeviceInterfaces(
hardwareDevInfo,
0,
ref guid,
device_number,
ref interfaceData);
// get the required size for the device interface system path
int devicePathSize = 0;
result = UsbNativeApi.SetupDiGetDeviceInterfaceDetail(
hardwareDevInfo, // IN HDEVINFO DeviceInfoSet,
ref interfaceData, // IN PSP_DEVICE_INTERFACE_DATA DeviceInterfaceData,
null, // DeviceInterfaceDetailData, OPTIONAL
0, // IN DWORD DeviceInterfaceDetailDataSize,
ref devicePathSize, // OUT PDWORD RequiredSize, OPTIONAL
null); //
// get the actual device interface details
UsbNativeType.PSP_DEVICE_INTERFACE_DETAIL_DATA interfaceDetail = new UsbNativeType.PSP_DEVICE_INTERFACE_DETAIL_DATA();
interfaceDetail.cbSize = 5; // sizeof (SP_DEVICE_INTERFACE_DETAIL_DATA) == 5 in C
result = UsbNativeApi.SetupDiGetDeviceInterfaceDetail(
hardwareDevInfo, // IN HDEVINFO DeviceInfoSet,
ref interfaceData, // IN PSP_DEVICE_INTERFACE_DATA DeviceInterfaceData,
ref interfaceDetail, // DeviceInterfaceDetailData, OPTIONAL
devicePathSize, // IN DWORD DeviceInterfaceDetailDataSize,
ref devicePathSize, // OUT PDWORD RequiredSize, OPTIONAL
null); //
return(interfaceDetail.DevicePath);
}
public unsafe static void CloseDevice(IntPtr handle)
{
UsbNativeApi.CloseHandle((int)handle);
}
