Struct nusb::descriptors::Configuration

pub struct Configuration<'a>(/* private fields */);

Information about a USB configuration with access to all associated interfaces, endpoints, and other descriptors.

Implementations

impl<'a> Configuration<'a>

pub fn new(buf: &[u8]) -> Configuration<'_>

Create a Configuration from a buffer containing a series of descriptors.

You normally obtain a Configuration from a Device, but this allows creating one from your own descriptor bytes for tests.

Panics

• when the buffer is too short for a configuration descriptor
• when the bLength and wTotalLength fields are longer than the buffer
• when the first descriptor is not a configuration descriptor

pub fn descriptors(&self) -> Descriptors<'_>

Get the configuration descriptor followed by all trailing interface and other descriptors.

pub fn interface_alt_settings( &self ) -> impl Iterator<Item = InterfaceAltSetting<'_>>

Iterate all interfaces and alternate settings settings of this configuration.

pub fn interfaces(&self) -> impl Iterator<Item = InterfaceGroup<'_>>

Iterate the interfaces of this configuration, grouping together alternate settings of the same interface.

impl<'a> Configuration<'a>

pub fn num_interfaces(&self) -> u8

bNumInterfaces descriptor field: Number of interfaces.

pub fn configuration_value(&self) -> u8

bConfigurationValue descriptor field: Identifier for the configuration.

Pass this value to Device::set_configuration to select this configuration.

pub fn attributes(&self) -> u8

bmAttributes descriptor field: Bitmap of configuration attributes.

pub fn max_power(&self) -> u8

bMaxPower descriptor field: Maximum power, in units of 2 milliamps.

impl<'a> Configuration<'a>

pub fn string_index(&self) -> Option<u8>

Index of the string descriptor describing this configuration.

Trait Implementations

impl<'a> Clone for Configuration<'a>

fn clone(&self) -> Configuration<'a>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for Configuration<'a>

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

Formats the value using the given formatter.