pub fn drain_task(
tx: ConsoleTxAsync<'static>,
) -> Result<SpawnToken<impl Sized>, SpawnError>Expand description
The single console writer: pulls contiguous slices from the ring and
writes them via the target’s async TX sink. write_all().await parks on
the TX-done IRQ when the FIFO is full — no spin, no interrupts-off, no
cross-core contention. When the ring is empty, awaits [DRAIN_SIGNAL]
(woken by every producer write). Spawn once from the binary’s main
(fire27: pass tx.into_async(); cores3: the split TX is already async).