private void initDevice(string devicePath)
{
deviceConnected = false;
//create file handles using CT_CreateFile
handle = Kernel32.CreateFile(devicePath, Kernel32.GENERIC_READ | Kernel32.GENERIC_WRITE, Kernel32.FILE_SHARE_READ | Kernel32.FILE_SHARE_WRITE, IntPtr.Zero, Kernel32.OPEN_EXISTING, 0, IntPtr.Zero);
//get capabilites - use getPreParsedData, and getCaps
//store the reportlengths
IntPtr ptrToPreParsedData = new IntPtr();
HID.HidD_GetPreparsedData(handle, ref ptrToPreParsedData);
capabilities = new HIDP_CAPS();
HID.HidP_GetCaps(ptrToPreParsedData, ref capabilities);
HIDD_ATTRIBUTES attributes = new HIDD_ATTRIBUTES();
HID.HidD_GetAttributes(handle, ref attributes);
string productName = "";
string SN = "";
string manfString = "";
IntPtr buffer = Marshal.AllocHGlobal(126);//max alloc for string;
if (HID.HidD_GetProductString(handle, buffer, 126))
{
productName = Marshal.PtrToStringAuto(buffer);
}
if (HID.HidD_GetSerialNumberString(handle, buffer, 126))
{
SN = Marshal.PtrToStringAuto(buffer);
}
if (HID.HidD_GetManufacturerString(handle, buffer, 126))
{
manfString = Marshal.PtrToStringAuto(buffer);
}
Marshal.FreeHGlobal(buffer);
//Call freePreParsedData to release some stuff
HID.HidD_FreePreparsedData(ref ptrToPreParsedData);
if (handle.IsInvalid)
{
return;
}
deviceConnected = true;
//If connection was sucsessful, record the values in a global struct
productInfo = new InterfaceDetails();
productInfo.devicePath = devicePath;
productInfo.manufacturer = manfString;
productInfo.product = productName;
productInfo.serialNumber = SN;
productInfo.PID = (ushort)attributes.ProductID;
productInfo.VID = (ushort)attributes.VendorID;
productInfo.versionNumber = (ushort)attributes.VersionNumber;
productInfo.IN_reportByteLength = (int)capabilities.InputReportByteLength;
productInfo.OUT_reportByteLength = (int)capabilities.OutputReportByteLength;
}
public static InterfaceDetails[] getConnectedDevices()
{
InterfaceDetails[] devices = new InterfaceDetails[0];
//Create structs to hold interface information
SP_DEVINFO_DATA devInfo = new SP_DEVINFO_DATA();
SP_DEVICE_INTERFACE_DATA devIface = new SP_DEVICE_INTERFACE_DATA();
devInfo.cbSize = (uint)Marshal.SizeOf(devInfo);
devIface.cbSize = (uint)(Marshal.SizeOf(devIface));
Guid G = new Guid();
HID.HidD_GetHidGuid(ref G); //Get the guid of the HID device class
IntPtr i = SetupAPI.SetupDiGetClassDevs(ref G, IntPtr.Zero, IntPtr.Zero, SetupAPI.DIGCF_DEVICEINTERFACE | SetupAPI.DIGCF_PRESENT);
//Loop through all available entries in the device list, until false
SP_DEVICE_INTERFACE_DETAIL_DATA didd = new SP_DEVICE_INTERFACE_DETAIL_DATA();
if (IntPtr.Size == 8) // for 64 bit operating systems
{
didd.cbSize = 8;
}
else
{
didd.cbSize = 4 + Marshal.SystemDefaultCharSize; // for 32 bit systems
}
int j = -1;
bool b = true;
SafeFileHandle tempHandle;
while (b)
{
++j;
b = SetupAPI.SetupDiEnumDeviceInterfaces(i, IntPtr.Zero, ref G, (uint)j, ref devIface);
if (b == false)
{
break;
}
uint requiredSize = 0;
SetupAPI.SetupDiGetDeviceInterfaceDetail(i, ref devIface, ref didd, 256, out requiredSize, ref devInfo);
string devicePath = didd.DevicePath;
//create file handles using CT_CreateFile
tempHandle = Kernel32.CreateFile(devicePath, Kernel32.GENERIC_READ | Kernel32.GENERIC_WRITE, Kernel32.FILE_SHARE_READ | Kernel32.FILE_SHARE_WRITE,
IntPtr.Zero, Kernel32.OPEN_EXISTING, 0, IntPtr.Zero);
//get capabilites - use getPreParsedData, and getCaps
//store the reportlengths
IntPtr ptrToPreParsedData = new IntPtr();
bool ppdSucsess = HID.HidD_GetPreparsedData(tempHandle, ref ptrToPreParsedData);
if (ppdSucsess == false)
{
continue;
}
HIDP_CAPS capabilities = new HIDP_CAPS();
HID.HidP_GetCaps(ptrToPreParsedData, ref capabilities);
HIDD_ATTRIBUTES attributes = new HIDD_ATTRIBUTES();
HID.HidD_GetAttributes(tempHandle, ref attributes);
string productName = "";
string SN = "";
string manfString = "";
IntPtr buffer = Marshal.AllocHGlobal(126);//max alloc for string;
if (HID.HidD_GetProductString(tempHandle, buffer, 126))
{
productName = Marshal.PtrToStringAuto(buffer);
}
if (HID.HidD_GetSerialNumberString(tempHandle, buffer, 126))
{
SN = Marshal.PtrToStringAuto(buffer);
}
if (HID.HidD_GetManufacturerString(tempHandle, buffer, 126))
{
manfString = Marshal.PtrToStringAuto(buffer);
}
Marshal.FreeHGlobal(buffer);
//Call freePreParsedData to release some stuff
HID.HidD_FreePreparsedData(ref ptrToPreParsedData);
//If connection was sucsessful, record the values in a global struct
InterfaceDetails productInfo = new InterfaceDetails();
productInfo.devicePath = devicePath;
productInfo.manufacturer = manfString;
productInfo.product = productName;
productInfo.PID = (ushort)attributes.ProductID;
productInfo.VID = (ushort)attributes.VendorID;
productInfo.versionNumber = (ushort)attributes.VersionNumber;
productInfo.IN_reportByteLength = (int)capabilities.InputReportByteLength;
productInfo.OUT_reportByteLength = (int)capabilities.OutputReportByteLength;
productInfo.serialNumber = SN; //Check that serial number is actually a number
int newSize = devices.Length + 1;
Array.Resize(ref devices, newSize);
devices[newSize - 1] = productInfo;
}
SetupAPI.SetupDiDestroyDeviceInfoList(i);
return(devices);
}
public static InterfaceDetails[] getConnectedDevices()
{
InterfaceDetails[] devices = new InterfaceDetails[0];
//Create structs to hold interface information
SP_DEVINFO_DATA devInfo = new SP_DEVINFO_DATA();
devInfo.cbSize = (uint)Marshal.SizeOf(devInfo);
SP_DEVICE_INTERFACE_DATA devIface = new SP_DEVICE_INTERFACE_DATA();
devIface.cbSize = (uint)(Marshal.SizeOf(devIface));
Guid G = Guid.Empty;
HID.HidD_GetHidGuid(ref G); //Get the guid of the HID device class
IntPtr deviceInfo = SetupAPI.SetupDiGetClassDevs(ref G, IntPtr.Zero, IntPtr.Zero, SetupAPI.DIGCF_DEVICEINTERFACE | SetupAPI.DIGCF_PRESENT);
//Loop through all available entries in the device list, until false
int j = 0;
while (true)
{
if (!SetupAPI.SetupDiEnumDeviceInterfaces(deviceInfo, IntPtr.Zero, ref G, (uint)j, ref devIface))
{
break;
}
uint requiredSize = 0;
IntPtr detailMemory = Marshal.AllocHGlobal((int)requiredSize);
SP_DEVICE_INTERFACE_DETAIL_DATA functionClassDeviceData = (SP_DEVICE_INTERFACE_DETAIL_DATA)Marshal.PtrToStructure(detailMemory, Typeof <SP_DEVICE_INTERFACE_DETAIL_DATA>());
functionClassDeviceData.cbSize = Marshal.SizeOf(functionClassDeviceData);
if (!SetupAPI.SetupDiGetDeviceInterfaceDetail(deviceInfo, ref devIface, ref functionClassDeviceData, requiredSize, out requiredSize, ref devInfo))
{
Marshal.FreeHGlobal(detailMemory);
break;
}
string devicePath = functionClassDeviceData.DevicePath;
Marshal.FreeHGlobal(detailMemory);
//create file handles using CT_CreateFile
uint desiredAccess = Kernel32.GENERIC_READ | Kernel32.GENERIC_WRITE;
uint shareMode = Kernel32.FILE_SHARE_READ | Kernel32.FILE_SHARE_WRITE;
SafeFileHandle tempHandle = Kernel32.CreateFile(devicePath, desiredAccess, shareMode,
IntPtr.Zero, Kernel32.OPEN_EXISTING, 0, IntPtr.Zero);
//get capabilites - use getPreParsedData, and getCaps
//store the reportlengths
IntPtr ptrToPreParsedData = new IntPtr();
bool ppdSucsess = HID.HidD_GetPreparsedData(tempHandle, ref ptrToPreParsedData);
if (!ppdSucsess)
{
continue;
}
HIDP_CAPS capability = new HIDP_CAPS();
HID.HidP_GetCaps(ptrToPreParsedData, ref capability);
HIDD_ATTRIBUTES attributes = new HIDD_ATTRIBUTES();
HID.HidD_GetAttributes(tempHandle, ref attributes);
string productName = EMPTY;
string SN = EMPTY;
string manfString = EMPTY;
const int bufferLen = 128;
IntPtr buffer = Marshal.AllocHGlobal(bufferLen);
if (HID.HidD_GetProductString(tempHandle, buffer, bufferLen))
{
productName = Marshal.PtrToStringAuto(buffer);
}
if (HID.HidD_GetSerialNumberString(tempHandle, buffer, bufferLen))
{
SN = Marshal.PtrToStringAuto(buffer);
}
if (HID.HidD_GetManufacturerString(tempHandle, buffer, bufferLen))
{
manfString = Marshal.PtrToStringAuto(buffer);
}
Marshal.FreeHGlobal(buffer);
//Call freePreParsedData to release some stuff
HID.HidD_FreePreparsedData(ref ptrToPreParsedData);
//If connection was sucsessful, record the values in a global struct
InterfaceDetails productInfo = new InterfaceDetails();
productInfo.devicePath = devicePath;
productInfo.manufacturer = manfString;
productInfo.product = productName;
productInfo.PID = (ushort)attributes.ProductID;
productInfo.VID = (ushort)attributes.VendorID;
productInfo.versionNumber = (ushort)attributes.VersionNumber;
productInfo.IN_reportByteLength = capability.InputReportByteLength;
productInfo.OUT_reportByteLength = capability.OutputReportByteLength;
productInfo.serialNumber = SN; //Check that serial number is actually a number
int newSize = devices.Length + 1;
Array.Resize(ref devices, newSize);
devices[newSize - 1] = productInfo;
++j;
}
SetupAPI.SetupDiDestroyDeviceInfoList(deviceInfo);
return(devices);
}