A structure representing the standard USB endpoint descriptor. More...

#include <libusb.h>

Data Fields
uint8_t	bLength
	Size of this descriptor (in bytes)

uint8_t	bDescriptorType
	Descriptor type. More...

uint8_t	bEndpointAddress
	The address of the endpoint described by this descriptor. More...

uint8_t	bmAttributes
	Attributes which apply to the endpoint when it is configured using the bConfigurationValue. More...

uint16_t	wMaxPacketSize
	Maximum packet size this endpoint is capable of sending/receiving.

uint8_t	bInterval
	Interval for polling endpoint for data transfers.

uint8_t	bRefresh
	For audio devices only: the rate at which synchronization feedback is provided.

uint8_t	bSynchAddress
	For audio devices only: the address if the synch endpoint.

const unsigned char *	extra
	Extra descriptors. More...

int	extra_length
	Length of the extra descriptors, in bytes. More...

Detailed Description

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.

Field Documentation

◆ bDescriptorType

uint8_t libusb_endpoint_descriptor::bDescriptorType

Descriptor type.

Will have value libusb_descriptor_type::LIBUSB_DT_ENDPOINT LIBUSB_DT_ENDPOINT in this context.

◆ bEndpointAddress

uint8_t libusb_endpoint_descriptor::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 libusb_endpoint_direction.

◆ bmAttributes

uint8_t libusb_endpoint_descriptor::bmAttributes

Attributes which apply to the endpoint when it is configured using the bConfigurationValue.

Bits 0:1 determine the transfer type and correspond to libusb_endpoint_transfer_type. Bits 2:3 are only used for isochronous endpoints and correspond to libusb_iso_sync_type. Bits 4:5 are also only used for isochronous endpoints and correspond to libusb_iso_usage_type. Bits 6:7 are reserved.

◆ extra

const unsigned char* libusb_endpoint_descriptor::extra

Extra descriptors.

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

◆ extra_length

int libusb_endpoint_descriptor::extra_length

Length of the extra descriptors, in bytes.

Must be non-negative.

The documentation for this struct was generated from the following file:

libusb.h