diff --git a/embassy-nrf/src/buffered_uarte.rs b/embassy-nrf/src/buffered_uarte.rs index 8e4064aaa..ef34e2e32 100644 --- a/embassy-nrf/src/buffered_uarte.rs +++ b/embassy-nrf/src/buffered_uarte.rs @@ -766,6 +766,12 @@ impl<'d, U: UarteInstance, T: TimerInstance> BufferedUarteRx<'d, U, T> { rx.pop_done(amt); U::regs().intenset.write(|w| w.rxstarted().set()); } + + /// we are ready to read if there is data in the buffer + fn read_ready() -> Result { + let state = T::buffered_state(); + Ok(!state.rx_buf.is_empty()) + } } impl<'a, U: UarteInstance, T: TimerInstance> Drop for BufferedUarteRx<'a, U, T> { @@ -827,6 +833,18 @@ mod _embedded_io { } } + impl<'d, U: UarteInstance, T: TimerInstance + 'd> embedded_io_async::ReadReady for BufferedUarte<'d, U, T> { + fn read_ready(&mut self) -> Result { + BufferedUarteRx::<'d, T>::read_ready() + } + } + + impl<'d, U: UarteInstance, T: TimerInstance + 'd> embedded_io_async::ReadReady for BufferedUarteRx<'d, U, T> { + fn read_ready(&mut self) -> Result { + Self::read_ready() + } + } + impl<'d, U: UarteInstance, T: TimerInstance> embedded_io_async::BufRead for BufferedUarte<'d, U, T> { async fn fill_buf(&mut self) -> Result<&[u8], Self::Error> { self.fill_buf().await