Struct InterfaceAssociationDescriptor 

pub struct InterfaceAssociationDescriptor {
    pub first_interface: u8,
    pub num_interfaces: u8,
    pub class: u8,
    pub subclass: u8,
    pub protocol: u8,
    pub interface_name: StringIndex,
}

USB interface association descriptor for grouping related interfaces.

This descriptor is used to associate multiple interfaces that belong to the same function, such as an audio function with control and streaming interfaces. (USB Audio Devices 2.0 §4.6)

Fields

first_interface: u8

First interface number in the association.

num_interfaces: u8

Number of interfaces in the association.

class: u8

Function class code.

subclass: u8

Function subclass code.

protocol: u8

Function protocol code.

interface_name: StringIndex

Index of string descriptor describing the function.

Implementations

impl InterfaceAssociationDescriptor

pub fn is_audio_association(&self) -> bool

Returns true if this interface association is for an audio function.

Trait Implementations

impl Clone for InterfaceAssociationDescriptor

fn clone(&self) -> InterfaceAssociationDescriptor

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for InterfaceAssociationDescriptor

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl ExtendableDescriptor for InterfaceAssociationDescriptor

const MIN_LEN: u8 = 8u8

Minimum length of the descriptor.

fn match_bytes(bytes: &[u8]) -> Result<(), DescriptorError>

Matches bytes with this descriptor.

fn prepare_bytes(bytes: &mut [u8], len: u8) -> Result<(), DescriptorError>

where Self: WritableDescriptor,

Prepares bytes to receive descriptor data.

impl Format for InterfaceAssociationDescriptor

where StringIndex: Format,

fn format(&self, f: Formatter<'_>)

Writes the defmt representation of self to fmt.

impl PartialEq for InterfaceAssociationDescriptor

fn eq(&self, other: &InterfaceAssociationDescriptor) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl USBDescriptor for InterfaceAssociationDescriptor

const BUF_SIZE: usize = 8usize

Size of the byte buffer.

const DESC_TYPE: u8 = 11u8

Descriptor type.

type Error = DescriptorError

fn try_from_bytes(bytes: &[u8]) -> Result<Self, Self::Error>

const DESC_SUBTYPE: Option<u8> = None

Descriptor subtype.

impl WritableDescriptor for InterfaceAssociationDescriptor

fn write_to_bytes(&self, bytes: &mut [u8]) -> Result<usize, Self::Error>

Writes this descriptor to the start of the byte buffer bytes.

fn write_to_bytes_partial(&self, bytes: &mut [u8]) -> Result<usize, Self::Error>

Writes this descriptor to the start of the byte buffer bytes.

impl Copy for InterfaceAssociationDescriptor

impl Eq for InterfaceAssociationDescriptor

impl StructuralPartialEq for InterfaceAssociationDescriptor