Struct embassy_usb::control::Request

pub struct Request {
    pub direction: Direction,
    pub request_type: RequestType,
    pub recipient: Recipient,
    pub request: u8,
    pub value: u16,
    pub index: u16,
    pub length: u16,
}

A control request read from a SETUP packet.

Fields

direction: Direction

Direction of the request.

request_type: RequestType

Type of the request.

recipient: Recipient

Recipient of the request.

request: u8

Request code. The meaning of the value depends on the previous fields.

value: u16

Request value. The meaning of the value depends on the previous fields.

index: u16

Request index. The meaning of the value depends on the previous fields.

length: u16

Length of the DATA stage. For control OUT transfers this is the exact length of the data the host sent. For control IN transfers this is the maximum length of data the device should return.

Implementations

impl Request

pub const GET_STATUS: u8 = 0u8

Standard USB control request Get Status

pub const CLEAR_FEATURE: u8 = 1u8

Standard USB control request Clear Feature

pub const SET_FEATURE: u8 = 3u8

Standard USB control request Set Feature

pub const SET_ADDRESS: u8 = 5u8

Standard USB control request Set Address

pub const GET_DESCRIPTOR: u8 = 6u8

Standard USB control request Get Descriptor

pub const SET_DESCRIPTOR: u8 = 7u8

Standard USB control request Set Descriptor

pub const GET_CONFIGURATION: u8 = 8u8

Standard USB control request Get Configuration

pub const SET_CONFIGURATION: u8 = 9u8

Standard USB control request Set Configuration

pub const GET_INTERFACE: u8 = 10u8

Standard USB control request Get Interface

pub const SET_INTERFACE: u8 = 11u8

Standard USB control request Set Interface

pub const SYNCH_FRAME: u8 = 12u8

Standard USB control request Synch Frame

pub const FEATURE_ENDPOINT_HALT: u16 = 0u16

Standard USB feature Endpoint Halt for Set/Clear Feature

pub const FEATURE_DEVICE_REMOTE_WAKEUP: u16 = 1u16

Standard USB feature Device Remote Wakeup for Set/Clear Feature

pub fn parse(buf: &[u8; 8]) -> Request

Parses a USB control request from a byte array.

pub const fn descriptor_type_index(&self) -> (u8, u8)

Gets the descriptor type and index from the value field of a GET_DESCRIPTOR request.

Trait Implementations

impl Clone for Request

fn clone(&self) -> Request

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Request

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

Formats the value using the given formatter.

impl Format for Request

where Direction: Format, RequestType: Format, Recipient: Format,

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

Writes the defmt representation of self to fmt.

impl PartialEq for Request

fn eq(&self, other: &Request) -> 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 Copy for Request

impl Eq for Request

impl StructuralPartialEq for Request