libusb_endpoint_descriptor

A structure representing the standard USB endpoint descriptor. This descriptor is documented in section 9.6.6 of the USB 3.0 specification. All multiple-byte fields are represented in host-endian format.

Members

Variables

bDescriptorType
ubyte bDescriptorType;

Descriptor type. Will have value * \ref libusb_descriptor_type::LIBUSB_DT_ENDPOINT LIBUSB_DT_ENDPOINT in * this context.

bEndpointAddress
ubyte bEndpointAddress;

The address of the endpoint described by this descriptor. Bits 0:3 are the endpoint number. Bits 4:6 are reserved. Bit 7 indicates direction, see \ref libusb_endpoint_direction.

bInterval
ubyte bInterval;

Interval for polling endpoint for data transfers.

bLength
ubyte bLength;

Size of this descriptor (in bytes)

bRefresh
ubyte bRefresh;

For audio devices only: the rate at which synchronization feedback * is provided.

bSynchAddress
ubyte bSynchAddress;

For audio devices only: the address if the synch endpoint

bmAttributes
ubyte bmAttributes;

Attributes which apply to the endpoint when it is configured using the bConfigurationValue. Bits 0:1 determine the transfer type and correspond to \ref libusb_transfer_type. Bits 2:3 are only used for isochronous endpoints and correspond to \ref libusb_iso_sync_type. Bits 4:5 are also only used for isochronous endpoints and correspond to \ref libusb_iso_usage_type. Bits 6:7 are reserved.

extra
char* extra;

Extra descriptors. If libusbx encounters unknown endpoint descriptors, * it will store them here, should you wish to parse them.

extra_length
int extra_length;

Length of the extra descriptors, in bytes.

wMaxPacketSize
ushort wMaxPacketSize;

Maximum packet size this endpoint is capable of sending/receiving.

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