Struct HD44780

pub struct HD44780<'a, A: Alarm<'a>> { /* private fields */ }

Implementations

impl<'a, A: Alarm<'a>> HD44780<'a, A>

pub fn new( rs_pin: &'a dyn Pin, en_pin: &'a dyn Pin, data_4_pin: &'a dyn Pin, data_5_pin: &'a dyn Pin, data_6_pin: &'a dyn Pin, data_7_pin: &'a dyn Pin, row_offsets: &'static mut [u8], alarm: &'a A, width: u8, height: u8, ) -> HD44780<'a, A>

pub fn screen_command( &self, command: usize, op: usize, value: u8, ) -> Result<(), ErrorCode>

Trait Implementations

impl<'a, A: Alarm<'a>> AlarmClient for HD44780<'a, A>

fn alarm(&self)

alarm() is called after each alarm finished, and depending on the current state of the program, the next step in being decided.

impl<'a, A: Alarm<'a>> TextScreen<'a> for HD44780<'a, A>

fn get_size(&self) -> (usize, usize)

Returns a tuple (width, height) with the resolution of the screen that is being used. This function is synchronous as the resolution is known by the driver at any moment.

fn print( &self, buffer: &'static mut [u8], len: usize, ) -> Result<(), (ErrorCode, &'static mut [u8])>

Sends a write command to the driver, and the buffer to write from and the len are sent as arguments. When the write operation is finished, the driver will call the write_complete() callback.

fn set_cursor( &self, x_position: usize, y_position: usize, ) -> Result<(), ErrorCode>

Sends to the driver a command to set the cursor at a given position (x_position, y_position). When finished, the driver will call the command_complete() callback.

fn hide_cursor(&self) -> Result<(), ErrorCode>

Sends to the driver a command to hide the cursor. When finished, the driver will call the command_complete() callback.

fn show_cursor(&self) -> Result<(), ErrorCode>

Sends to the driver a command to show the cursor. When finished, the driver will call the command_complete() callback.

fn blink_cursor_on(&self) -> Result<(), ErrorCode>

Sends to the driver a command to turn on the blinking cursor. When finished, the driver will call the command_complete() callback.

fn blink_cursor_off(&self) -> Result<(), ErrorCode>

Sends to the driver a command to turn off the blinking cursor. When finished, the driver will call the command_complete() callback.

fn display_on(&self) -> Result<(), ErrorCode>

Sends to the driver a command to turn on the display of the screen. When finished, the driver will call the command_complete() callback.

fn display_off(&self) -> Result<(), ErrorCode>

Sends to the driver a command to turn off the display of the screen. When finished, the driver will call the command_complete() callback.

fn clear(&self) -> Result<(), ErrorCode>

Sends to the driver a command to clear the display of the screen. When finished, the driver will call the command_complete() callback.

fn set_client(&self, client: Option<&'a dyn TextScreenClient>)