Struct HubDescriptor 

pub struct HubDescriptor {
    pub port_num: u8,
    pub characteristics: u16,
    pub power_on_delay: u8,
    pub max_current: u8,
    pub device_removable: [u8; 32],
    pub port_power_ctrl_mask: [u8; 32],
}

USB Hub class descriptor (USB 2.0 §11.23.2.1)

Fields

port_num: u8

Number of ports.

characteristics: u16

Characteristics bitmap.

power_on_delay: u8

Power-on delay in units of 2ms.

max_current: u8

Maximum current requirements of the hub.

device_removable: [u8; 32]

Device removable bitmap (variable size).

Meaning of bit values:

• 0 if the device is removable
• 1 if the device is not removable

Bit 0 is reserved.

port_power_ctrl_mask: [u8; 32]

Port power control mask bitmap (variable size).

All bits should be 1 for compatibility with USB 1.0 code.

Implementations

impl HubDescriptor

pub fn variable_bitmap_size(&self) -> usize

Current size of (device_removable)Self::device_removable and (port_power_ctrl_mask)Self::port_power_ctrl_mask.

Trait Implementations

impl Clone for HubDescriptor

fn clone(&self) -> HubDescriptor

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for HubDescriptor

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

Formats the value using the given formatter.

impl Format for HubDescriptor

where [u8; 32]: Format,

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

Writes the defmt representation of self to fmt.

impl PartialEq for HubDescriptor

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

const BUF_SIZE: usize = 71usize

Size of the byte buffer.

const DESC_TYPE: u8 = 41u8

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 HubDescriptor

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

Matches length with the number of ports.

const MIN_LEN: u8 = 9u8

Minimum length of the descriptor.

const MAX_LEN: u8 = 71u8

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 HubDescriptor

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 HubDescriptor

impl Eq for HubDescriptor

impl StructuralPartialEq for HubDescriptor