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PvState

pv

Struct PvState 

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pub struct PvState {
Show 16 fields
    pub connected: bool,
    pub value: Value,
    pub severity: Severity,
    pub status: u16,
    pub timestamp: Option<SystemTime>,
    pub units: String,
    pub precision: Option<i32>,
    pub labels: Vec<String>,
    pub display_range: Option<(f64, f64)>,
    pub control_range: Option<(f64, f64)>,
    pub alarm_range: Option<(f64, f64)>,
    pub warning_range: Option<(f64, f64)>,
    pub writable: bool,
    pub writable_known: bool,
    pub write_error: Option<String>,
    pub error: Option<String>,

}
Expand description

Everything known about a PV at one moment.

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§connected: bool§value: Value§severity: Severity§status: u16§timestamp: Option<SystemTime>§units: String§precision: Option<i32>§labels: Vec<String>

Enum state labels.

§display_range: Option<(f64, f64)>§control_range: Option<(f64, f64)>§alarm_range: Option<(f64, f64)>

Alarm (LOLO, HIHI) and warning (LOW, HIGH) limits.

§warning_range: Option<(f64, f64)>§writable: bool

Whether a write is expected to be accepted. Only meaningful as a fact when writable_known; otherwise it is an optimistic guess.

§writable_known: bool

Whether the server told us writable. PV Access has no per-channel access rights, so for it this stays false: writes are allowed but may be refused by the server, and write_error then says so.

§write_error: Option<String>

Why the last write failed, until one succeeds.

§error: Option<String>

Why the PV cannot connect, if the backend knows.

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impl PvState

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pub fn format(&self, precision: Option<i32>, with_units: bool) -> String

Format the value as text. precision overrides the PV’s own precision.

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pub fn range(&self) -> Option<(f64, f64)>

Display limits, falling back to the control limits, if set (low < high).

Trait Implementations§

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impl Clone for PvState

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fn clone(&self) -> PvState

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Debug for PvState

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

Formats the value using the given formatter. Read more
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impl Default for PvState

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fn default() -> PvState

Returns the “default value” for a type. Read more
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impl PartialEq for PvState

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

Equality operator ==. Read more
1.0.0 (const: unstable) · Source§

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

Inequality operator !=. Read more
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impl StructuralPartialEq for PvState

Auto Trait Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<ST, DT> CastableFrom<ST, Initialized, Initialized> for DT
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impl<T> CloneToUninit for T
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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

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fn instrument(self, span: Span) -> Instrumented<Self> ⓘ

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Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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type Owned = T

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type Error = Infallible

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type Error = <U as TryFrom<T>>::Error

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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

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