Struct EscapeWatcher 

pub struct EscapeWatcher { /* private fields */ }

Observes inbound CDC bytes for the rescue prefix Ctrl-C Ctrl-C Ctrl-C dfu followed by \r or \n. On match, returns RescueAction::TriggerDfu so the caller can put the device into serial DFU mode independent of the CLI session.

The watcher is non-consuming: callers should hand each received byte to EscapeWatcher::observe before passing it to the CLI parser, not instead of. This preserves Ctrl-C’s “abort” semantics inside the CLI.

Implementations

impl EscapeWatcher

pub const fn new() -> Self

pub fn observe(&mut self, byte: u8) -> RescueAction

Feed one received byte. Returns TriggerDfu exactly once on completion of the magic sequence; further bytes return None until reset is called.

pub fn observe_slice(&mut self, bytes: &[u8]) -> RescueAction

Convenience: observe every byte in a slice.

pub fn fired(&self) -> bool

pub fn reset(&mut self)

Trait Implementations

impl Debug for EscapeWatcher

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for EscapeWatcher

fn default() -> Self

Returns the “default value” for a type.