sendBreak method
Send a BREAK condition for duration.
Implementation
@override
Future<void> sendBreak({
Duration duration = const Duration(milliseconds: 250),
}) async {
if (!isOpen) throw StateError('LibserialportSerialTransport not open');
_check(_bindings.spStartBreak(_port!), 'sp_start_break');
await Future<void>.delayed(duration);
_check(_bindings.spEndBreak(_port!), 'sp_end_break');
}