/// <summary>
/// Opens a WinUsb directly from the user supplied device path.
/// </summary>
/// <param name="devicePath">Device path (symbolic link) of the WinUsb device to open.</param>
/// <param name="usbDevice">Returns an opened WinUsb device on success, null on failure.</param>
/// <returns>True on success.</returns>
public static bool Open(string devicePath, out WinUsbDevice usbDevice)
{
usbDevice = null;
SafeFileHandle sfhDev;
bool bSuccess = WinUsbAPI.OpenDevice(out sfhDev, devicePath);
if (bSuccess)
{
SafeWinUsbInterfaceHandle handle = new SafeWinUsbInterfaceHandle();
bSuccess = WinUsbAPI.WinUsb_Initialize(sfhDev, ref handle);
if (bSuccess)
{
usbDevice = new WinUsbDevice(WinUsbApi, sfhDev, handle, devicePath);
}
else
{
UsbError.Error(ErrorCode.Win32Error, Marshal.GetLastWin32Error(), "Open:Initialize", typeof(UsbDevice));
}
}
else
{
UsbError.Error(ErrorCode.Win32Error, Marshal.GetLastWin32Error(), "Open", typeof(UsbDevice));
}
return(bSuccess);
}
/// <summary>
/// Opens the USB device for communucation.
/// </summary>
/// <param name="usbDevice">Returns an opened WinUsb device on success, null on failure.</param>
/// <returns>True on success.</returns>
public bool Open(out WinUsbDevice usbDevice)
{
usbDevice = null;
if (String.IsNullOrEmpty(SymbolicName))
{
return(false);
}
if (WinUsbDevice.Open(SymbolicName, out usbDevice))
{
usbDevice.mUsbRegistry = this;
return(true);
}
return(false);
}
/// <summary>
/// Gets an interface associated with this <see cref="WinUsbDevice"/>.
/// </summary>
/// <param name="associatedInterfaceIndex">The index to retrieve. (0 = next interface, 1= interface after next, etc.).</param>
/// <param name="usbDevice">A new <see cref="WinUsbDevice"/> class for the specified AssociatedInterfaceIndex.</param>
/// <returns>True on success.</returns>
public bool GetAssociatedInterface(byte associatedInterfaceIndex, out WinUsbDevice usbDevice)
{
usbDevice = null;
IntPtr pHandle = IntPtr.Zero;
bool bSuccess = WinUsbAPI.WinUsb_GetAssociatedInterface(mUsbHandle, associatedInterfaceIndex, ref pHandle);
if (bSuccess)
{
SafeWinUsbInterfaceHandle tempHandle = new SafeWinUsbInterfaceHandle(pHandle);
usbDevice = new WinUsbDevice(mUsbApi, null, tempHandle, mDevicePath);
}
if (!bSuccess)
{
UsbError.Error(ErrorCode.Win32Error, Marshal.GetLastWin32Error(), "GetAssociatedInterface", this);
}
return(bSuccess);
}
internal PowerPolicies(WinUsbDevice usbDevice)
{
mBufferPtr = Marshal.AllocCoTaskMem(MAX_SIZE);
mUsbDevice = usbDevice;
}