Trait pwr_hd44780::Hd44780
[−]
[src]
pub trait Hd44780 {
fn clear(&mut self) -> UnitResult;
fn home(&mut self) -> UnitResult;
fn move_at(&mut self, y: usize, x: usize) -> UnitResult;
fn print_char(&mut self, ch: u8) -> UnitResult;
fn set_backlight(&mut self, enabled: bool) -> UnitResult;
fn set_cursor_blinking(&mut self, enabled: bool) -> UnitResult;
fn set_cursor_visible(&mut self, enabled: bool) -> UnitResult;
fn set_text_visible(&mut self, enabled: bool) -> UnitResult;
fn create_char(&mut self, idx: u8, lines: [u8; 8]) -> UnitResult;
fn height(&self) -> usize;
fn width(&self) -> usize;
fn print<T: Into<String>>(&mut self, str: T) -> UnitResult { ... }
}
Required Methods
fn clear(&mut self) -> UnitResult
Clears the screen and moves cursor at (0, 0).
fn home(&mut self) -> UnitResult
Moves the cursor at (0, 0).
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.
Each array item in given bitmap represents a single line, of which only the last 5 bits are important - rest is ignored.
idx must be from range <0, 7> (that is: only 8 custom characters are possible, that's a
limit imposed by the designers of the HD44780).
When passed an invalid idx, does nothing.
Example
lcd.create_char(1, [ 0b00000000, 0b10000000, 0b01000000, 0b00100000, 0b00010000, 0b00001000, 0b00000100, 0b00000010, ]); lcd.print_char(1);
fn height(&self) -> usize
Returns screen's height (number of lines).
fn width(&self) -> usize
Returns screen's width (number of characters per line).
Provided Methods
fn print<T: Into<String>>(&mut self, str: T) -> UnitResult
Prints a string at current cursor's position.