Struct Controller 

pub struct Controller<const B: usize = MAX_BUTTONS, const E: usize = MAX_ENCODERS> { /* private fields */ }

Unified timing controller. Owns all stateful input processing.

Usage

let mut ctrl = Controller::new();
// On each input poll:
let result = ctrl.process(event, now_ms, &config);
// Send result.midi via MIDI output
// Update display from result.display
// Re-render LEDs if result.leds_changed

Implementations

impl<const B: usize, const E: usize> Controller<B, E>

pub fn new() -> Self

pub fn with_state(store: PresetStateStore<B, E>) -> Self

Create with a restored state store (from EEPROM/persistence).

pub fn process<const A: usize>( &mut self, event: Event, now_ms: u32, config: &Config<B, E, A>, ) -> Output

Process a single input event. Returns all MIDI output, display events, and flags. System actions (preset switch, tap tempo) are handled internally.

pub fn button_held(&self) -> bool

Returns true if any button is currently held.

pub fn button_states(&self) -> &[bool; B]

Returns the current button active state (toggle ON / momentary held).

pub fn active_preset(&self) -> u8

Get the active preset index.

pub fn encoder_values(&self) -> [u8; E]

Get the encoder values.

pub fn snapshot_store(&self) -> PresetStateStore<B, E>

Get a snapshot of the state store (with current working state saved). Use this for persistence — the caller decides the serialization format.

pub fn select_preset<const A: usize>( &mut self, preset_idx: u8, config: &Config<B, E, A>, ) -> Output

Manually switch to a preset (e.g., on boot or from external command). Returns on_enter + recall MIDI in the result.

pub fn set_encoder_value(&mut self, index: usize, value: u8)

Set encoder value (for initial state setup from config defaults).

Trait Implementations

impl<const B: usize, const E: usize> Default for Controller<B, E>

fn default() -> Self

Returns the “default value” for a type.