Enum Pull 

pub enum Pull {
    None,
    Up,
    Down,
}

The internal pull resistor applied to an input pin.

A floating input drifts and reads noise, so a pin reading a switch needs a defined resting level from a pull resistor (internal where the chip offers one, external otherwise).

Variants

None

No internal pull; the line floats unless something external holds it.

Up

An internal pull-up holds the line high when nothing drives it.

Down

An internal pull-down holds the line low when nothing drives it.

Trait Implementations

impl Clone for Pull

fn clone(&self) -> Pull

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Pull

impl Debug for Pull

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

Formats the value using the given formatter.

impl Eq for Pull

impl PartialEq for Pull

fn eq(&self, other: &Pull) -> 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 StructuralPartialEq for Pull