public bool GetBosUSB20DeviceExtensionDescriptor(ref USB_BOS_USB20_DEVICE_EXTENSION descr)
{
// USB3.0 device specific descriptor, for USB2.0 device this function will return false
if (_alreadyDisposed) throw new ObjectDisposedException("");
if ((_bcdUSB & CyConst.bcdUSBJJMask) != CyConst.USB30MajorVer)
return false;
if (USBBos.USB20_DeviceExt != null)
{// USB20 device extesion is defined
descr.bLength = USBBos.USB20_DeviceExt.Lenght;
descr.bDescriptorType = USBBos.USB20_DeviceExt.DescriptorType;
descr.bDevCapabilityType = USBBos.USB20_DeviceExt.DevCapabilityType;
descr.bmAttribute = USBBos.USB20_DeviceExt.bmAttribute;
}
else// not defined
return false;
return true;
}
protected uint _bmAttribute; // Bitmap encoding for supprted feature and Link power managment supprted if set
#endregion Fields
#region Constructors
internal unsafe CyBOS_USB20_DEVICE_EXT(IntPtr handle, USB_BOS_USB20_DEVICE_EXTENSION* USB20_DeviceExt)
{
_bLength = USB20_DeviceExt->bLength;
_bDescriptorType = USB20_DeviceExt->bDescriptorType;
_bDevCapabilityType = USB20_DeviceExt->bDevCapabilityType;
_bmAttribute = USB20_DeviceExt->bmAttribute;
}