Struct InterfaceDescriptor 

pub struct InterfaceDescriptor {
    pub interface_number: u8,
    pub alternate_setting: u8,
    pub num_endpoints: u8,
    pub interface_class: u8,
    pub interface_subclass: u8,
    pub interface_protocol: u8,
    pub interface_name: StringIndex,
}

Standard USB Interface Descriptor.

A configuration provides one or more interfaces. (USB 2.0 §9.6.5)

Fields

interface_number: u8

Interface index in this configuration (0-based).

alternate_setting: u8

Alternate setting ID of this interface.

num_endpoints: u8

Number of endpoints used by this interface.

interface_class: u8

Class code.

If the class is 0, then the behavior is undefined (value is reserved).

If the class is 0xff, then the interface class is vendor-specific.

interface_subclass: u8

Subclass code.

If the class is 0, then the subclass must be 0.

If the subclass is 0xff, then the interface subclass is vendor-specific.

interface_protocol: u8

Protocol code.

If the protocol is 0, then there is no class-specific interface protocol.

If the protocol is 0xff, then the interface protocol is vendor-specific.

interface_name: StringIndex

Interface string.

Trait Implementations

impl Clone for InterfaceDescriptor

fn clone(&self) -> InterfaceDescriptor

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for InterfaceDescriptor

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

Formats the value using the given formatter.

impl ExtendableDescriptor for InterfaceDescriptor

const MIN_LEN: u8 = 9u8

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 InterfaceDescriptor

where StringIndex: Format,

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

Writes the defmt representation of self to fmt.

impl<'a> From<&DescriptorChain<'a, InterfaceDescriptor>> for InterfaceDescriptor

fn from(chain: &InterfaceDescriptorChain<'a>) -> Self

Converts to this type from the input type.

impl PartialEq for InterfaceDescriptor

fn eq(&self, other: &InterfaceDescriptor) -> 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 InterfaceDescriptor

const BUF_SIZE: usize = 9usize

Size of the byte buffer.

const DESC_TYPE: u8 = 4u8

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 InterfaceDescriptor

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 InterfaceDescriptor

impl Eq for InterfaceDescriptor

impl StructuralPartialEq for InterfaceDescriptor