Struct Fb 

pub struct Fb {
    pub fd: c_int,
    pub ptr: *mut u8,
    pub map_len: usize,
    pub stride: usize,
    pub bpp: usize,
    pub xres: usize,
    pub yres: usize,
    /* private fields */
}

Fields

fd: c_int

ptr: *mut u8

map_len: usize

stride: usize

bpp: usize

xres: usize

yres: usize

Implementations

impl Fb

pub fn open() -> Option<Fb>

pub fn present_rect( &self, buf: &[u8], w: usize, h: usize, rect: &UpdateRegion, waveform: u32, )

Blit and refresh an arbitrary rectangle, rather than present’s full-width band.

Needed when a waveform must be kept off neighbouring pixels: a 1-bit waveform (A2/DU) drives every pixel in its update region to black or white, so a full-width band would flatten anything colourful sharing those rows. Bounding the region horizontally keeps the waveform on the animated area alone.

pub fn present( &self, buf: &[u8], w: usize, h: usize, full: bool, top: usize, rh: usize, waveform: u32, )

Blit an RGB565 byte buffer to the framebuffer and trigger an e-ink refresh. buf is w * h * 2 bytes, little-endian RGB565.

pub fn wait_for_update_complete(&self)

Trait Implementations

impl Drop for Fb

fn drop(&mut self)

Executes the destructor for this type.

fn pin_drop(self: Pin<&mut Self>)

🔬This is a nightly-only experimental API. (pin_ergonomics)

Execute the destructor for this type, but different to Drop::drop, it requires self to be pinned.