Struct Trellis

pub struct Trellis { /* private fields */ }

The Trellis device abstraction.

Implementations

impl Trellis

pub fn new(dev: Box<dyn I2CMasterDevice>) -> Trellis

Construct a new Trellis device with a particular I2C-Device. See the devices module for a list of concrete devices that can be used. Note: object has to be initialised with a call to init before you can control the LEDs and buttons.

pub fn init(&mut self)

Initialise the trellis connection. Has to be called exactly once for a trellis.

pub fn set_led(&mut self, col: Col, row: Row)

Turn a LED on the specified position to on.

pub fn clear_led(&mut self, col: Col, row: Row)

Turn a LED on the specified position to off.

pub fn is_led_set(&mut self, col: Col, row: Row) -> bool

Returns the LED state (on or off) from the internal display buffer. The state may not reflect the actual state on the hardware if the display buffer was not written.

pub fn write_display(&mut self)

Writes the internal display buffer to the hardware. You must call this function manually after updating the LED states of the trellis.

pub fn button_evt_loop(&mut self, hnd: EventLoopHandler)

Start the button read event loop. This function does not terminate and can only be stopped by the supplied event handler returning false. The polling interval for reading the button is currently fixed to 30ms.