/// <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);
}
public IEnumerable <HidDeviceInfo> CollectInfo()
{
var result = new List <HidDeviceInfo>();
Guid hidGuid;
Hid.HidD_GetHidGuid(out hidGuid);
var deviceInfoList = SetupApi.SetupDiGetClassDevs(ref hidGuid, null, IntPtr.Zero,
Constants.DIGCF_DEVICEINTERFACE | Constants.DIGCF_PRESENT);
if (deviceInfoList != IntPtr.Zero && deviceInfoList != Constants.INVALID_HANDLE_VALUE)
{
var deviceInfo = new SetupApi.SP_DEVICE_INTERFACE_DATA();
deviceInfo.cbSize = Marshal.SizeOf(deviceInfo);
for (var i = 0; ; i++)
{
if (!SetupApi.SetupDiEnumDeviceInterfaces(deviceInfoList, 0, ref hidGuid, Convert.ToUInt32(i),
ref deviceInfo))
{
break;
}
var path = this.GetPath(deviceInfoList, deviceInfo);
var device = new HidDevice();
if (device.Open(path))
{
var attributes = device.GetAttributes();
var vendor = device.GetVendorString();
var product = device.GetProductString();
result.Add(new HidDeviceInfo(
path,
attributes.VendorID,
attributes.ProductID,
attributes.VersionString,
vendor,
product));
device.Close();
}
}
SetupApi.SetupDiDestroyDeviceInfoList(deviceInfoList);
}
return(result);
}
public static string GetInstanceIDByKeyName(string driverKeyName)
{
var result = string.Empty;
var h = SetupApi.SetupDiGetClassDevs(default(int), UsbConstants.REGSTR_KEY_USB, IntPtr.Zero, UsbConstants.DIGCF_PRESENT | UsbConstants.DIGCF_ALLCLASSES);
if (h.ToInt32() != UsbConstants.INVALID_HANDLE_VALUE)
{
var ptrBuf = Marshal.AllocHGlobal(UsbConstants.BUFFER_SIZE);
var keyName = string.Empty;
var i = default(int);
var success = default(bool);
do
{
var da = new SpDevinfoData();
da.cbSize = Marshal.SizeOf(da);
success = SetupApi.SetupDiEnumDeviceInfo(h, i, ref da);
if (success)
{
var regType = UsbConstants.REG_SZ;
var requiredSize = default(int);
keyName = string.Empty;
if (SetupApi.SetupDiGetDeviceRegistryProperty(h, ref da, UsbConstants.SPDRP_DRIVER, ref regType, ptrBuf, UsbConstants.BUFFER_SIZE, ref requiredSize))
{
keyName = Marshal.PtrToStringAuto(ptrBuf);
}
if (keyName == driverKeyName)
{
var nBytes = UsbConstants.BUFFER_SIZE;
var sb = new StringBuilder(nBytes);
SetupApi.SetupDiGetDeviceInstanceId(h, ref da, sb, nBytes, out requiredSize);
result = sb.ToString();
break;
}
}
i++;
} while (success);
Marshal.FreeHGlobal(ptrBuf);
SetupApi.SetupDiDestroyDeviceInfoList(h);
}
return(result);
}
/// <summary>
/// Obtains teh serial ports and their descriptions using SetupAPI.
/// Prefered over the WMI implementation because it is significantly
/// faster, but requires admin access.
/// </summary>
private static IEnumerable <SerialPortInfo> GetPortsSetupApi()
{
var guids = new[] {
Guid.Parse(GUID_DEVINTERFACE_COMPORT2)
// Guid.Parse(GUID_DEVINTERFACE_COMPORT)
};
foreach (var guid in guids)
{
var guidCopy = guid;
var hDeviceInfoSet = SetupApi.SetupDiGetClassDevs(ref guidCopy, null, IntPtr.Zero,
SetupApi.DiGetFlags.Present);
if (hDeviceInfoSet == IntPtr.Zero)
{
throw new Exception("Failed to get device information set for the COM ports");
}
var iMemberIndex = 0;
while (true)
{
var deviceInfoData = new SetupApi.SpDevInfoData();
deviceInfoData.cbSize = (uint)Marshal.SizeOf(typeof(SetupApi.SpDevInfoData));
bool success = SetupApi.SetupDiEnumDeviceInfo(hDeviceInfoSet, (uint)iMemberIndex, deviceInfoData);
if (!success)
{
break;
}
var spiq = new SerialPortInfo {
Name = GetDeviceName(hDeviceInfoSet, deviceInfoData)
};
GetRegistryProperties(spiq, hDeviceInfoSet, deviceInfoData);
if (!string.IsNullOrEmpty(spiq.Name) && spiq.Name.Contains("COM"))
{
yield return(spiq);
}
iMemberIndex++;
}
SetupApi.SetupDiDestroyDeviceInfoList(hDeviceInfoSet);
}
}
/// <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 int EnumerateDevices(DeviceEnumeratorInfo deviceEnumeratorInfo)
{
int devIndex;
const uint CM_PROB_PHANTOM = (0x0000002D); // The devinst currently exists only in the registry
// Initialize the SP_DEVINFO_DATA structure
SetupApi.SP_DEVINFO_DATA devInfoData = new SetupApi.SP_DEVINFO_DATA();
devInfoData.cbSize = (uint)Marshal.SizeOf(typeof(SetupApi.SP_DEVINFO_DATA));
// Used to parse the DeviceID tokens.
RegHardwareID regHardwareID = RegHardwareID.GlobalInstance;
// Used as a buffer for:
// * SetupDiGetDeviceRegistryProperty
// * CM_Get_Device_ID
// * SetupDiGetCustomDeviceProperty
// * SetupDiGetDeviceProperty
byte[] propBuffer = new byte[1024];
// List all connected USB devices
IntPtr pDevInfo = SetupApi.SetupDiGetClassDevs(0, "USB", deviceEnumeratorInfo.Hwnd, deviceEnumeratorInfo.DICFGFlags);
if (pDevInfo == IntPtr.Zero || pDevInfo == new IntPtr(-1))
{
InfWizardStatus.Log(CategoryType.EnumerateDevices, StatusType.Win32Error, "SetupDiGetClassDevs Failed!");
return(-1);
}
for (devIndex = 0;; devIndex++)
{
if (!SetupApi.SetupDiEnumDeviceInfo(pDevInfo, devIndex, ref devInfoData))
{
// Reached the end of the eviceInfo list.
InfWizardStatus.Log(CategoryType.EnumerateDevices, StatusType.Info, "device enumeration complete.");
break;
}
DeviceItem deviceItem = new DeviceItem();
// SPDRP_DRIVER seems to do a better job at detecting driverless devices than
// SPDRP_INSTALL_STATE
RegistryValueKind propertyType;
int requiredSize;
if (SetupApi.SetupDiGetDeviceRegistryProperty(pDevInfo,
ref devInfoData,
SetupApi.SPDRP.DRIVER,
out propertyType,
propBuffer,
propBuffer.Length,
out requiredSize))
{
deviceItem.mDriverless = false;
// Read all string values from the registry driver key
IntPtr hKey = SetupApi.SetupDiOpenDevRegKey(pDevInfo,
ref devInfoData,
1,
0,
DevKeyType.DRV,
(int)RegistryKeyPermissionCheck.ReadSubTree);
if (hKey != IntPtr.Zero && hKey != new IntPtr(-1))
{
int index = 0;
int nameLength = 255;
int dataLength = 1023;
deviceItem.mDriverRegistryList = new Dictionary <string, object>();
StringBuilder sbName = new StringBuilder(nameLength + 1);
StringBuilder sbValue = new StringBuilder(dataLength + 1);
RegistryValueKind regValueType;
while (SetupApi.RegEnumValue(hKey, index, sbName, ref nameLength, IntPtr.Zero, out regValueType, sbValue, ref dataLength) == 0)
{
if (regValueType == RegistryValueKind.String)
{
deviceItem.mDriverRegistryList.Add(sbName.ToString(), sbValue.ToString());
}
// Get next key/value index
index++;
// Reset max lengths
nameLength = 255;
dataLength = 1023;
}
SetupApi.RegCloseKey(hKey);
}
}
else
{
deviceItem.mDriverless = true;
}
// [trobinson] patch
uint status;
uint pbmNumber;
deviceItem.mIsConnected = (SetupApi.CM_Get_DevNode_Status(out status, out pbmNumber, devInfoData.DevInst, 0) != SetupApi.CR.NO_SUCH_DEVNODE);
if (deviceItem.mIsConnected)
{
deviceItem.mIsConnected = ((pbmNumber & CM_PROB_PHANTOM) != CM_PROB_PHANTOM);
}
//if (deviceItem.mDriverless && !deviceItem.mIsConnected)
// deviceItem.mDriverless = false;
// Find only the ones that are driverless
if (deviceEnumeratorInfo.DriverlessOnly && !deviceItem.mDriverless)
{
InfWizardStatus.Log(CategoryType.EnumerateDevices, StatusType.Info, "skipping non driverless device.");
continue;
}
// Driverless devices will return an error
InfWizardStatus.Log(CategoryType.EnumerateDevices, StatusType.Info, "driverless device found.");
// Eliminate USB hubs by checking the driver string
if (!SetupApi.SetupDiGetDeviceRegistryProperty(pDevInfo,
ref devInfoData,
SetupApi.SPDRP.SERVICE,
out propertyType,
propBuffer,
propBuffer.Length,
out requiredSize))
{
InfWizardStatus.Log(CategoryType.EnumerateDevices, StatusType.Warning, "failed getting SPDRP.SERVICE");
deviceItem.mServiceName = String.Empty;
}
else
{
deviceItem.mServiceName = GetAsAutoString(propBuffer);
}
bool bContinue = true;
foreach (string skipServiceName in mSkipServiceNames)
{
if (deviceItem.mServiceName.Trim().ToLower() == skipServiceName)
{
bContinue = false;
break;
}
}
if (!bContinue && deviceEnumeratorInfo.SkipWindowsServices)
{
continue;
}
//if (!bContinue)
// continue;
deviceItem.mIsSkipServiceName = !bContinue;
string[] saHardwareIDs;
// Retrieve the hardware ID
if (!SetupApi.SetupDiGetDeviceRegistryProperty(out saHardwareIDs,
pDevInfo,
ref devInfoData,
SetupApi.SPDRP.HARDWAREID))
{
InfWizardStatus.Log(CategoryType.EnumerateDevices, StatusType.Win32Error, "failed getting SPDRP.HARDWAREID");
continue;
}
if (saHardwareIDs.Length == 0)
{
InfWizardStatus.Log(CategoryType.EnumerateDevices, StatusType.Error, "device does not have any hardware ids");
continue;
}
for (int hwid = 0; hwid < saHardwareIDs.Length; hwid++)
{
InfWizardStatus.Log(CategoryType.EnumerateDevices, StatusType.Info, "found hardware ID ({0}/{1}): {2}", hwid + 1, saHardwareIDs.Length, saHardwareIDs[hwid]);
}
// Get Device ID
SetupApi.CR r = SetupApi.CM_Get_Device_ID(devInfoData.DevInst, propBuffer, propBuffer.Length, 0);
if (r != SetupApi.CR.SUCCESS)
{
InfWizardStatus.Log(CategoryType.EnumerateDevices,
StatusType.Error,
"CM_Get_Device_ID:Failed retrieving simple path for device index: {0} HWID:{1} CR error {2}",
devIndex,
saHardwareIDs[0],
r);
continue;
}
deviceItem.mDeviceId = GetAsAutoString(propBuffer);
InfWizardStatus.Log(CategoryType.EnumerateDevices,
StatusType.Info,
"{0} USB device {1}: {2}",
deviceItem.mDriverless ? "Driverless" : deviceItem.mServiceName,
devIndex,
deviceItem.mDeviceId);
string sDeviceDescription;
if (SetupApi.WindowsVersion < WindowsVersionType.WINDOWS_7)
{
// On Vista and earlier, we can use SPDRP_DEVICEDESC
bContinue = SetupApi.SetupDiGetDeviceRegistryProperty(out sDeviceDescription,
pDevInfo,
ref devInfoData,
SetupApi.SPDRP.DEVICEDESC);
if (!bContinue)
{
sDeviceDescription = string.Empty;
}
}
else
{
// On Windows 7, the information we want ("Bus reported device description") is
// accessed through DEVPKEY_Device_BusReportedDeviceDesc
try
{
bContinue = SetupApi.SetupDiGetDeviceProperty(pDevInfo,
ref devInfoData,
SetupApi.DEVPKEY_Device_BusReportedDeviceDesc,
out propertyType,
propBuffer,
propBuffer.Length,
out requiredSize,
0);
}
catch (DllNotFoundException)
{
//if (SetupDiGetDeviceProperty == NULL)
InfWizardStatus.Log(CategoryType.EnumerateDevices,
StatusType.Warning,
"Failed to locate SetupDiGetDeviceProperty() is Setupapi.dll");
bContinue = false;
}
if (bContinue)
{
sDeviceDescription = GetAsAutoString(propBuffer);
}
else
{
// fallback to SPDRP_DEVICEDESC (USB husb still use it)
bContinue = SetupApi.SetupDiGetDeviceRegistryProperty(out sDeviceDescription,
pDevInfo,
ref devInfoData,
SetupApi.SPDRP.DEVICEDESC);
if (!bContinue)
{
sDeviceDescription = string.Empty;
}
}
}
if (!bContinue)
{
InfWizardStatus.Log(CategoryType.EnumerateDevices,
StatusType.Warning | StatusType.Win32Error,
"Failed reading read device description for {0}: {1}",
devIndex,
deviceItem.mDeviceId);
}
deviceItem.DeviceDescription = sDeviceDescription;
deviceItem.BaseFilename = sDeviceDescription;
MatchCollection matches = regHardwareID.Matches(saHardwareIDs[0]);
foreach (Match match in matches)
{
foreach (NamedGroup namedGroup in RegHardwareID.NAMED_GROUPS)
{
RegHardwareID.ENamedGroups groupEnum = (RegHardwareID.ENamedGroups)namedGroup.GroupNumber;
Group group = match.Groups[(int)groupEnum];
if (!group.Success)
{
continue;
}
switch (groupEnum)
{
case RegHardwareID.ENamedGroups.Vid:
deviceItem.VendorID = group.Value;
break;
case RegHardwareID.ENamedGroups.Pid:
deviceItem.ProductID = group.Value;
break;
case RegHardwareID.ENamedGroups.Rev:
//deviceItem.Rev = group.Value;
break;
case RegHardwareID.ENamedGroups.MI:
deviceItem.MI = group.Value;
if (deviceItem.MI != string.Empty)
{
deviceItem.DeviceDescription += String.Format(" (Interface #{0})", deviceItem.mMI);
}
break;
default:
throw new ArgumentOutOfRangeException();
}
}
}
if (deviceItem.mVid == 0 && deviceItem.mPid == 0)
{
continue;
}
string sManufacturer;
if (!SetupApi.SetupDiGetDeviceRegistryProperty(out sManufacturer,
pDevInfo,
ref devInfoData,
SetupApi.SPDRP.MFG))
{
sManufacturer = string.Empty;
}
deviceItem.Manufacturer = sManufacturer;
string[] deviceInterfaceGuids = new string[0];
if (SetupApi.SetupDiGetCustomDeviceProperty(pDevInfo,
ref devInfoData,
"DeviceInterfaceGUIDs",
SetupApi.DICUSTOMDEVPROP.NONE,
out propertyType,
propBuffer,
propBuffer.Length,
out requiredSize))
{
deviceInterfaceGuids = GetAsAutoStringArray(propBuffer, requiredSize);
}
if (deviceInterfaceGuids.Length > 0)
{
deviceItem.DeviceInterfaceGuid = deviceInterfaceGuids[0];
}
if (!deviceEnumeratorInfo.DeviceFound(deviceItem, pDevInfo, ref devInfoData))
{
break;
}
InfWizardStatus.Log(CategoryType.EnumerateDevices, StatusType.Info, "device description: {0}", deviceItem.DeviceDescription);
}
SetupApi.SetupDiDestroyDeviceInfoList(pDevInfo);
return(devIndex);
}
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);
}
/// <summary>
/// Flag phantom/removed devices for reinstallation.
/// See: http://msdn.microsoft.com/en-us/library/aa906206.aspx
/// </summary>
public static int CheckRemoved(string deviceHardwareID)
{
int devIndex;
int removed = 0;
bool bSuccess;
// Initialize the SP_DEVINFO_DATA structure
SetupApi.SP_DEVINFO_DATA devInfoData = new SetupApi.SP_DEVINFO_DATA();
devInfoData.cbSize = (uint)Marshal.SizeOf(typeof(SetupApi.SP_DEVINFO_DATA));
// List all connected USB devices
IntPtr pDevInfo = SetupApi.SetupDiGetClassDevs(0, "USB", IntPtr.Zero, SetupApi.DICFG.ALLCLASSES);
if (pDevInfo == IntPtr.Zero || pDevInfo == new IntPtr(-1))
{
return(removed);
}
for (devIndex = 0;; devIndex++)
{
bSuccess = SetupApi.SetupDiEnumDeviceInfo(pDevInfo, devIndex, ref devInfoData);
// Reached the end of the deviceInfo list.
if (!bSuccess)
{
break;
}
// Find the hardware ID
string[] saHardwareIDs;
bSuccess = SetupApi.SetupDiGetDeviceRegistryProperty(out saHardwareIDs,
pDevInfo,
ref devInfoData,
SetupApi.SPDRP.HARDWAREID);
// Failed getting hardware id
if (!bSuccess)
{
break;
}
// Failed getting hardware id
if (saHardwareIDs.Length == 0)
{
continue;
}
// Check all hardwareids for a match
bool bFound = false;
foreach (string s in saHardwareIDs)
{
if (s.Trim().ToLower() == deviceHardwareID.Trim().ToLower())
{
bFound = true;
break;
}
}
// Hardware did not match; goto next device
if (!bFound)
{
continue;
}
uint status;
uint pbmNumber;
// If not Unplugged.
bSuccess = (SetupApi.CM_Get_DevNode_Status(out status, out pbmNumber, devInfoData.DevInst, 0) == SetupApi.CR.NO_SUCH_DEVNODE);
if (!bSuccess)
{
continue;
}
// Flag for reinstall on next plugin
uint configFlags;
bSuccess = SetupApi.SetupDiGetDeviceRegistryProperty(out configFlags, pDevInfo, ref devInfoData, SetupApi.SPDRP.CONFIGFLAGS);
if (!bSuccess)
{
InfWizardStatus.Log(CategoryType.CheckRemoved,
StatusType.Warning,
"could not read SPDRP_CONFIGFLAGS for phantom device {0}",
deviceHardwareID);
continue;
}
// Mark for re-installation
configFlags |= (uint)SetupApi.CONFIGFLAG.REINSTALL;
uint[] flags = new uint[] { configFlags };
bSuccess = SetupApi.SetupDiSetDeviceRegistryProperty(pDevInfo,
ref devInfoData,
SetupApi.SPDRP.CONFIGFLAGS,
flags,
Marshal.SizeOf(typeof(uint)));
if (!bSuccess)
{
InfWizardStatus.Log(CategoryType.CheckRemoved,
StatusType.Warning,
"could not write SPDRP_CONFIGFLAGS for phantom device {0}",
deviceHardwareID);
continue;
}
removed++;
}
if (removed > 0)
{
InfWizardStatus.Log(CategoryType.CheckRemoved, StatusType.Info, "flagged {0} removed devices for reinstallation", removed);
}
SetupApi.SetupDiDestroyDeviceInfoList(pDevInfo);
return(removed);
}
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 IEnumerable <string> GetPresentedUsbHardwareIds()
{
logger.Verb("GetPresentedUsbHardwareIds()");
List <string> hardwareIds = new List <string>();
IntPtr deviceInfoSet = IntPtr.Zero;
long lastError = 0;
const int INVALID_HANDLE_VALUE = -1;
string devEnum = "USB";
try
{
deviceInfoSet = SetupApi.SetupDiGetClassDevs(IntPtr.Zero, devEnum, IntPtr.Zero, (int)(DIGCF.DIGCF_PRESENT | DIGCF.DIGCF_ALLCLASSES));
if ((deviceInfoSet != (IntPtr)INVALID_HANDLE_VALUE))
{
bool res = false;
uint deviceIndex = 0;
do
{
SP_DEVINFO_DATA devInfoData = new SP_DEVINFO_DATA();
devInfoData.cbSize = (uint)Marshal.SizeOf(devInfoData);
res = SetupApi.SetupDiEnumDeviceInfo(deviceInfoSet, deviceIndex, ref devInfoData);
if (!res)
{
lastError = Marshal.GetLastWin32Error();
if (lastError == (long)HResult.WIN32_ERROR_NO_MORE_ITEMS)
{
break;
}
logger.Error("SetupDiEnumDeviceInfo() " + lastError);
break;
}
uint regType = 0;
IntPtr propBuffer = IntPtr.Zero;
uint bufSize = 1024;
uint requiredSize = 0;
try
{
propBuffer = Marshal.AllocHGlobal((int)bufSize);
do
{
res = SetupApi.SetupDiGetDeviceRegistryProperty(deviceInfoSet, ref devInfoData, (UInt32)SPDRP.SPDRP_HARDWAREID,
ref regType, propBuffer, (uint)bufSize, ref requiredSize);
if (!res)
{
lastError = Marshal.GetLastWin32Error();
if (lastError == (long)HResult.WIN32_ERROR_INSUFFICIENT_BUFFER)
{
bufSize = requiredSize;
if (propBuffer != IntPtr.Zero)
{
Marshal.FreeHGlobal(propBuffer);
}
propBuffer = Marshal.AllocHGlobal((int)bufSize);
continue;
}
else
{
logger.Error("SetupDiGetDeviceRegistryProperty() " + lastError);
break;
}
}
string hardwareId = Marshal.PtrToStringAuto(propBuffer);
logger.Debug(hardwareId);
hardwareIds.Add(hardwareId);
}while (false);
}
finally
{
if (propBuffer != IntPtr.Zero)
{
Marshal.FreeHGlobal(propBuffer);
}
}
deviceIndex++;
}while (true);
}
else
{
lastError = Marshal.GetLastWin32Error();
logger.Error("SetupDiGetClassDevs() " + lastError);
}
}
catch (Exception ex)
{
logger.Error(ex);
}
finally
{
if (deviceInfoSet != IntPtr.Zero)
{
SetupApi.SetupDiDestroyDeviceInfoList(deviceInfoSet);
}
}
return(hardwareIds);
}
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);
}
}
}