Enum RefreshMode 

pub enum RefreshMode {
    Full,
    FullSlow,
    Partial,
    Gray2,
}

The refresh mode for the display.

Variants

Full

Use the full update LUT. This is slower than RefreshMode::Partial, but should be done occasionally to avoid ghosting. If ghosting persists, try RefreshMode::FullSlow.

It’s recommended to avoid full refreshes less than RECOMMENDED_MIN_FULL_REFRESH_INTERVAL apart, but to do a full refresh at least every RECOMMENDED_MAX_FULL_REFRESH_INTERVAL.

FullSlow

A slower full update that gives a cleaner final image. This corresponds with the WS_20_30 LUT in the sample code.

It’s recommended to avoid full refreshes less than RECOMMENDED_MIN_FULL_REFRESH_INTERVAL apart, but to do a full refresh at least every RECOMMENDED_MAX_FULL_REFRESH_INTERVAL.

Partial

Uses the partial update LUT for fast refresh. A full refresh should be done occasionally to avoid ghosting, see RECOMMENDED_MAX_FULL_REFRESH_INTERVAL.

This is the standard “fast” update. It diffs the current framebuffer against the previous framebuffer, and just updates the pixels that differ.

Gray2

A refresh mode that supports 2-bit grayscale. Note that Waveshare calls this “Gray4”, but we use Gray2 to align with the embedded-graphics color embedded_graphics::pixelcolor::Gray2.

There is no partial update version for Gray2. All updates require writing to both on-device framebuffers.

Implementations

impl RefreshMode

pub fn border_waveform(&self) -> Option<&[u8]>

Returns the border waveform setting to use for this refresh mode.

pub fn lut(&self) -> &[u8]

Returns the LUT to use for this refresh mode.

pub fn lut_magic(&self) -> &[u8]

pub fn gate_voltage(&self) -> &[u8]

pub fn source_voltage(&self) -> &[u8]

pub fn vcom(&self) -> &[u8]

pub fn display_update_control_2(&self) -> &[u8]

Returns the value to set for Command::DisplayUpdateControl2 when using this refresh mode.

pub fn is_black_and_white(&self) -> bool

If this refresh mode is black and white only.

Trait Implementations

impl Clone for RefreshMode

fn clone(&self) -> RefreshMode

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RefreshMode

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

Formats the value using the given formatter.

impl PartialEq for RefreshMode

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

impl Eq for RefreshMode

impl StructuralPartialEq for RefreshMode