Struct Cdc2CommandPacket 

pub struct Cdc2CommandPacket<const CMD: u8, const ECMD: u8, P: Encode> { /* private fields */ }

CDC2 (Extended) Command Packet

This type encodes a host-to-device command packet used in the extended CDC2 protocol. The payload type P must implement Encode.

All CDC2 commands have a corresponding Cdc2ReplyPacket from the device, even if the reply contains no payload. For example, a SystemFlagsPacket command corresponds to a SystemFlagsReplyPacket reply. See Cdc2ReplyPacket for more info on packet acknowledgement.

Encoding

This is an extension of the standard CdcCommandPacket encoding that adds:

• An extended command opcode (ecmd).
• A CRC16 checksum covering the entire packet (including header).

Field	Size	Description
header	4	Must be COMMAND_HEADER.
cmd	1	A CDC command opcode, typically USER_CDC (for a brain) or CON_CDC (for a controller).
ecmd	1	A CDC2 extended command opcode.
size	1–2	Number of remaining bytes in the packet (starting at payload through crc16), encoded as a VarU16.
payload	n	Encoded payload.
crc16	2	CRC16 checksum of the whole packet, computed with the VEX_CRC16 algorithm.

Implementations

impl Cdc2CommandPacket<USER_CDC, FACTORY_EBL, [u8; 4]>

pub const MAGIC: [u8; 4]

impl<P: Encode, const CMD: u8, const ECMD: u8> Cdc2CommandPacket<CMD, ECMD, P>

pub const HEADER: [u8; 4] = COMMAND_HEADER

pub fn new(payload: P) -> Self

Creates a new command packet with a payload.

payload must implement the Encode trait.

Trait Implementations

impl<const CMD: u8, const ECMD: u8, P: Clone + Encode> Clone for Cdc2CommandPacket<CMD, ECMD, P>

fn clone(&self) -> Cdc2CommandPacket<CMD, ECMD, P>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<const CMD: u8, const ECMD: u8, P: Debug + Encode> Debug for Cdc2CommandPacket<CMD, ECMD, P>

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

Formats the value using the given formatter.

impl<const CMD: u8, const ECMD: u8, P: Encode> Encode for Cdc2CommandPacket<CMD, ECMD, P>

fn size(&self) -> usize

Returns the number of bytes this value will take when encoded.

fn encode(&self, data: &mut [u8])

Encodes this instance into the provided byte slice.

impl<const CMD: u8, const ECMD: u8, P: PartialEq + Encode> PartialEq for Cdc2CommandPacket<CMD, ECMD, P>

fn eq(&self, other: &Cdc2CommandPacket<CMD, ECMD, P>) -> 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<const CMD: u8, const ECMD: u8, P: Copy + Encode> Copy for Cdc2CommandPacket<CMD, ECMD, P>

impl<const CMD: u8, const ECMD: u8, P: Eq + Encode> Eq for Cdc2CommandPacket<CMD, ECMD, P>

impl<const CMD: u8, const ECMD: u8, P: Encode> StructuralPartialEq for Cdc2CommandPacket<CMD, ECMD, P>