Struct Sqn 

pub struct Sqn(/* private fields */);

Sequence number (0..=3).

Spec: §5.7, §Table 2

SQN 0 is reserved for boot/recovery. Normal cycle is 1 → 2 → 3 → 1 → …. The ACU re-uses an outstanding SQN to request a reply repeat from the PD; the PD treats a new SQN as a new command.

Implementations

impl Sqn

pub const ZERO: Self

Boot / recovery SQN.

pub const fn new(n: u8) -> Result<Self, Error>

Validating constructor.

pub const fn value(self) -> u8

Underlying value.

pub const fn next(self) -> Self

Next SQN in the cycle, skipping 0.

Trait Implementations

impl Clone for Sqn

fn clone(&self) -> Sqn

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Sqn

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

Formats the value using the given formatter.

impl Hash for Sqn

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Sqn

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

impl Eq for Sqn

impl StructuralPartialEq for Sqn