Struct LineValues

#[repr(C)]
pub struct LineValues {
    pub bits: u64,
    pub mask: u64,
}

Values of GPIO lines.

Bits in the bitmaps correspond to the index into LineRequest.offsets. The first requested line, offsets[0], is bit 0.

Fields

bits: u64

The value of the lines, set to 1 for active and 0 for inactive.

mask: u64

The lines in a request to access, set to 1 to access and 0 to ignore.

Implementations

impl LineValues

pub fn from_slice(s: &[bool]) -> Self

Create values from a slice.

The values are in the same order as LineRequest.offsets.

pub fn copy_from_slice(&mut self, s: &[bool])

Copy values from an iterable list - in order of requested offsets.

pub fn get(&self, idx: usize) -> Option<bool>

Return the value of a line.

Note that the LineValues need to be populated via a call to get_line_values to get values from the underlying hardware.

Fails if the line of interest is not set in the mask.

• idx - The index into the LineRequest.offsets for the line of interest.

pub fn set(&mut self, idx: usize, active: bool)

Set the value of a line.

Note that the values are not applied to hardware until passed to set_line_values.

• idx - The index into the LineRequest.offsets for the line of interest.
• active - The logical state of the line to be set.

pub fn unset_mask(&mut self, idx: usize)

Clear the mask bit for a line.

The line will be ignored in subsequent calls to get_line_values and set_line_values.

• idx - The index into the LineRequest.offsets for the line of interest.

Trait Implementations

impl Clone for LineValues

fn clone(&self) -> LineValues

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LineValues

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

Formats the value using the given formatter.

impl Default for LineValues

fn default() -> LineValues

Returns the “default value” for a type.

impl PartialEq for LineValues

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

impl Eq for LineValues

impl StructuralPartialEq for LineValues