Struct PresetStateStore 

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

Manages per-preset state and generates recall MIDI on switch.

Implementations

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

pub fn new() -> Self

pub fn current(&self) -> &PresetState<B, E>

Get a reference to the current active preset’s state.

pub fn current_mut(&mut self) -> &mut PresetState<B, E>

Get a mutable reference to the current active preset’s state.

pub fn active_index(&self) -> u8

Current active preset index.

pub fn save_working(&mut self, working: &PresetState<B, E>)

Save working state into the active preset slot (for serialization without switching).

pub fn clear(&mut self)

Reset all state (presets changed, state is stale).

pub fn set_state(&mut self, index: usize, state: PresetState<B, E>)

Set state for a specific preset slot.

pub fn apply_defaults<const A: usize>(&mut self, presets: &[&Preset<B, E, A>])

Reset state using preset defaults (after upload / first boot). Each preset’s declared initial state is applied.

pub fn switch<const A: usize>( &mut self, new_preset: u8, working: &mut PresetState<B, E>, preset: &Preset<B, E, A>, ) -> Vec<MidiMessage, 16>

Switch to a new preset. Saves current working state, loads new state, and returns MIDI messages to recall the new preset’s state to external gear.

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

pub const EEPROM_MAX_PRESETS: usize

Maximum presets that fit in 128 bytes for this configuration.

pub fn cleared_eeprom() -> [u8; 128]

Return a cleared EEPROM buffer (for writing after preset upload).

pub fn to_eeprom(&self, buf: &mut [u8; 128])

Serialize entire store to EEPROM buffer (128 bytes). Layout: [magic][active_preset][state0..stateN]

pub fn from_eeprom(buf: &[u8; 128]) -> Option<Self>

Deserialize from EEPROM buffer. Returns None if magic/version doesn’t match.

Trait Implementations

impl<const B: usize, const E: usize> Clone for PresetStateStore<B, E>

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

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

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

fn default() -> Self

Returns the “default value” for a type.