Struct apigpio::GpioChange

pub struct GpioChange {
    pub pin: PPin,
    pub level: Option<Level>,
    pub tick: Option<Tick>,
    pub sequence: Word,
}

Represents a change to a gpio pin, as requested by notify_subscribe.

Fields

pin: PPin

BCM pin number.

level: Option<Level>

Can be None only if notify_subscribe parameter read_initially is false: then it is None before gpio has been read for the first time. In that case, the first recv on the Subscription will get None. All other recvs will get Some.

tick: Option<Tick>

None until the first change. I.e., the first value observed on Subscription is None (regardless of read_initially) and subsequent ones will get Some.

sequence: Word

Increments by 1 each time the Subscription is updated. This allows you to spot missed updates, provided that you look often enough that it doesn’t wrap.

Trait Implementations

impl Clone for GpioChange

fn clone(&self) -> GpioChange

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for GpioChange

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

Formats the value using the given formatter.

impl Hash for GpioChange

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<GpioChange> for GpioChange

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for GpioChange

impl Eq for GpioChange

impl StructuralEq for GpioChange

impl StructuralPartialEq for GpioChange