/* open hid device */
public bool Open()
{
/* opens hid device file */
HIDHandel = HIDNativeAPIs.CreateFile(HWFullPath,
HIDNativeAPIs.GENERIC_READ | HIDNativeAPIs.GENERIC_WRITE,
HIDNativeAPIs.FILE_SHARE_READ | HIDNativeAPIs.FILE_SHARE_WRITE,
IntPtr.Zero, HIDNativeAPIs.OPEN_EXISTING, 0, IntPtr.Zero);
/* whops */
if (HIDHandel.IsInvalid)
{
return(false);
}
GetHIDDevInfos();
int bufSize = (int)OutputBuffSize;
if (bufSize == 0)
{
bufSize = DefBUfferSize;
}
/* prepare stream - sync buf size should same as output buf */
_fileStream = new FileStream(HIDHandel, FileAccess.ReadWrite, bufSize, false);
/* report status */
return(true);
}
/* get device path */
private string GetPath(IntPtr hInfoSet, ref DeviceInterfaceData iface)
{
/* detailed interface information */
var detIface = new DeviceInterfaceDetailData();
/* required size */
uint reqSize = (uint)Marshal.SizeOf(detIface);
/* set size. The cbSize member always contains the size of the
* fixed part of the data structure, not a size reflecting the
* variable-length string at the end. */
/* now stay with me and look at that x64/x86 maddness! */
detIface.Size = Marshal.SizeOf(typeof(IntPtr)) == 8 ? 8 : 5;
/* get device path */
bool status = HIDNativeAPIs.SetupDiGetDeviceInterfaceDetail(hInfoSet, ref iface, ref detIface, reqSize, ref reqSize, IntPtr.Zero);
/* whops */
if (!status)
{
/* fail! */
throw new Win32Exception();
}
/* return device path */
return(detIface.DevicePath);
}
public byte[] GetInputReport(byte reportID)
{
byte[] revbuf = new byte[16];
revbuf[0] = reportID;
if (!HIDNativeAPIs.HidD_GetInputReport(HIDHandel, revbuf, (uint)revbuf.Length))
{
revbuf = null;
}
return(revbuf);
}
private void GetHIDDevInfos()
{
//get capabilities - use getPreParsedData, and getCaps
//store the report lengths
IntPtr ptrToPreParsedData = new IntPtr();
bool ppdSucsess = HIDNativeAPIs.HidD_GetPreparsedData(HIDHandel, ref ptrToPreParsedData);
HIDP_CAPS capabilities = new HIDP_CAPS();
int hidCapsSucsess = HIDNativeAPIs.HidP_GetCaps(ptrToPreParsedData, ref capabilities);
//Save buff size
OutputBuffSize = capabilities.OutputReportByteLength;
InputBuffSize = capabilities.InputReportByteLength;
//Call freePreParsedData to release some stuff
HIDNativeAPIs.HidD_FreePreparsedData(ref ptrToPreParsedData);
}
/* get vid and pid */
private HiddAttributtes GetVidPid(SafeFileHandle handle)
{
/* attributes structure */
var attr = new HiddAttributtes();
/* set size */
attr.Size = Marshal.SizeOf(attr);
/* get attributes */
if (HIDNativeAPIs.HidD_GetAttributes(handle.DangerousGetHandle(), ref attr) == false)
{
/* fail! */
throw new Win32Exception();
}
return(attr);
}
/* get device product string */
private string GetSerialNumber(SafeFileHandle handle)
{
/* buffer */
var s = new StringBuilder(256);
/* returned string */
string rc = String.Empty;
/* get string */
if (HIDNativeAPIs.HidD_GetSerialNumberString(handle.DangerousGetHandle(), s, s.Capacity))
{
rc = s.ToString();
}
/* report string */
return(rc);
}
/* dispose */
public void Dispose()
{
/* deal with file stream */
if (_fileStream != null)
{
/* close stream */
//_fileStream.Dispose();
_fileStream.Close();
/* get rid of object */
_fileStream = null;
}
if (!HIDHandel.IsClosed)
{
/* close handle */
HIDNativeAPIs.CloseHandle(HIDHandel);
}
}
/* browse all HID class devices */
public static List <HIDInfo> BrowseHID()
{
/* hid device class guid */
Guid gHid;
/* list of device information */
List <HIDInfo> info = new List <HIDInfo>();
/* obtain hid guid */
HIDNativeAPIs.HidD_GetHidGuid(out gHid);
/* get list of present hid devices */
//var hInfoSet = GetClassDevs(gHid, (uint)DIGCF.DIGCF_PRESENT | (uint)DIGCF.DIGCF_DEVICEINTERFACE);
var hInfoSet = GetClassDevs(Guid.Empty, (uint)DIGCF.DIGCF_ALLCLASSES | (uint)DIGCF.DIGCF_DEVICEINTERFACE);
/* allocate mem for interface descriptor */
var iface = new DeviceInterfaceData();
/* set size field */
iface.Size = Marshal.SizeOf(iface);
/* interface index */
uint index = 0;
/* iterate through all interfaces */
while (HIDNativeAPIs.SetupDiEnumDeviceInterfaces(hInfoSet, 0, ref gHid, index, ref iface))
{
bool isWork = false;
HIDInfo hidInfo = new HIDInfo(hInfoSet, iface, out isWork);
if (isWork)
{
info.Add(hidInfo);
}
/* next, please */
index++;
}
/* clean up */
if (HIDNativeAPIs.SetupDiDestroyDeviceInfoList(hInfoSet) == false)
{
/* fail! */
//throw new Win32Exception();
}
/* return list */
return(info);
}
public bool OpenAsync()
{
if (HWFullPath.Contains("28559b57"))
{
int my = -1;
}
/* opens hid device file */
HIDHandel = HIDNativeAPIs.CreateFile(HWFullPath,
HIDNativeAPIs.GENERIC_READ | HIDNativeAPIs.GENERIC_WRITE,
HIDNativeAPIs.FILE_SHARE_READ | HIDNativeAPIs.FILE_SHARE_WRITE,
IntPtr.Zero,
//HIDNativeAPIs.OPEN_EXISTING,
HIDNativeAPIs.FILE_CREATE_NEW,
HIDNativeAPIs.FILE_FLAG_OVERLAPPED,
IntPtr.Zero);
/* whops */
if (HIDHandel.IsInvalid)
{
int error = Marshal.GetLastWin32Error();
string rev = HIDNativeAPIs.GetSysErrMsg(error);
return(false);
}
GetHIDDevInfos();
int bufSize = (int)OutputBuffSize;
if (bufSize == 0)
{
bufSize = DefBUfferSize;
}
/* prepare stream - async buf size should same as output buf */
_fileStream = new FileStream(HIDHandel, FileAccess.ReadWrite, bufSize, true);
/* report status */
return(true);
}
static IntPtr GetClassDevs(Guid guid, uint flags)
{
return(HIDNativeAPIs.SetupDiGetClassDevs(ref guid, null, IntPtr.Zero, flags));
}
public bool SetOutPutReport(byte[] data)
{
return(HIDNativeAPIs.HidD_SetOutputReport(HIDHandel, data, (uint)data.Length));
}
