Struct HIDDescriptor 

pub struct HIDDescriptor {
    pub bcd_hid: u16,
    pub country_code: u8,
    pub num_descriptors: u8,
    pub descriptor_type0: u8,
    pub descriptor_length0: u16,
}

USB HID class descriptor.

This descriptor identifies subordinate class descriptors. (USB HID 1.11 §6.2.1)

Fields

bcd_hid: u16

USB HID specification version that the class descriptors comply to.

country_code: u8

Country code.

For country code 0, the hardware is not localized.

Keyboards may use this field to identify the language of the key caps.

num_descriptors: u8

Number of class descriptors.

descriptor_type0: u8

Type of the class descriptor 0.

descriptor_length0: u16

Length of the class descriptor 0.

Implementations

impl HIDDescriptor

pub const SUPPORTED_DESCRIPTORS: u8 = 1

Maximum number of class descriptors that we support (at most 83).

Trait Implementations

impl Clone for HIDDescriptor

fn clone(&self) -> HIDDescriptor

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for HIDDescriptor

impl Debug for HIDDescriptor

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

Formats the value using the given formatter.

impl Eq for HIDDescriptor

impl Format for HIDDescriptor

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

Writes the defmt representation of self to fmt.

impl PartialEq for HIDDescriptor

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for HIDDescriptor

impl USBDescriptor for HIDDescriptor

const BUF_SIZE: usize

Size of the byte buffer.

const DESC_TYPE: u8 = 0x21

Descriptor type.

type Error = DescriptorError

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

const DESC_SUBTYPE: Option<u8> = None

Descriptor subtype.

impl VariableSizeDescriptor for HIDDescriptor

fn match_bytes_len(bytes: &[u8]) -> bool

Matches length with the number of class descriptors.

const MIN_LEN: u8

Minimum length of the descriptor.

const MAX_LEN: u8

Maximum 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 WritableDescriptor for HIDDescriptor

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.