Struct pwr_hd44780::DirectLcd

pub struct DirectLcd { /* fields omitted */ }

Methods

impl Direct

fn new(bus: Box<Bus>, width: usize, height: usize) -> Result<Direct>

Creates a new direct HD44780 on given bus.

fn new_ex(bus: Box<Bus>, properties: Properties) -> Result<Direct>

Creates a new direct HD44780 on given bus.

Trait Implementations

impl Hd44780 for Direct

fn clear(&mut self) -> UnitResult

Clears the screen. It's a slow command, re-writing screen with new data should be a preferred way if one is concerned about the performance (that's precisely what the "buffered" frontend does).

fn home(&mut self) -> UnitResult

Moves cursor at (0, 0). It's actually slower than "move_at(0, 0)", because HD44780 takes some time to process this one.

fn move_at(&mut self, y: usize, x: usize) -> UnitResult

Moves the cursor at given position. When passed an invalid coordinates (eg. beyond the screen), does nothing.

fn print_char(&mut self, ch: u8) -> UnitResult

Prints a single ASCII character and moves cursor.

fn set_backlight(&mut self, enabled: bool) -> UnitResult

Enables / disables the backlight.

fn set_cursor_blinking(&mut self, enabled: bool) -> UnitResult

Enables / disables blinking the cursor. Blinking = whole 5x8 / 5x10 character is blinking,

fn set_cursor_visible(&mut self, enabled: bool) -> UnitResult

Enables / disables the cursor. Visible = only bottom of the character is blinking.

fn set_text_visible(&mut self, enabled: bool) -> UnitResult

Shows / hides the text.

fn create_char(&mut self, idx: u8, lines: [u8; 8]) -> UnitResult

Creates a custom character from given bitmap.

fn height(&self) -> usize

Returns screen's height (number of lines).

fn width(&self) -> usize

Returns screen's width (number of characters per line).

fn print<T: Into<String>>(&mut self, str: T) -> UnitResult

Prints a string at current cursor's position.