Module controller 

Unified controller: single entry point for all input processing.

Owns all timing-sensitive state (long-press detection, encoder acceleration, tap tempo, preset state) and delegates pure logic to the engine.

The Controller handles system actions (preset switching) internally, including on_enter/on_exit actions and recall MIDI. Callers only need to send the resulting MIDI output — no orchestration required.

Both firmware and simulator use the same Controller — the only difference is where now_ms comes from (hardware monotonic vs std::Instant).

Structs

Controller

Unified timing controller. Owns all stateful input processing.

Output

Result of processing an input event through the Controller. Contains everything the caller needs to emit — no further logic required.

Enums

Event

Abstract input event. Hardware-agnostic — firmware maps GPIO edges to these, the simulator maps keyboard/WebSocket events to these.

Type Aliases

DefaultController

Type alias for the default controller configuration (6 buttons, 2 encoders).