Struct gpiocdev_uapi::v2::LineValues

#[repr(C)]
pub struct LineValues {
    pub bits: Bitmap<64>,
    pub mask: Bitmap<64>,
}

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: Bitmap<64>

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

mask: Bitmap<64>

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 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 copy of the value.

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<LineValues> for LineValues

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

impl Eq for LineValues

impl StructuralEq for LineValues

impl StructuralPartialEq for LineValues