fix(embassy-rp): fix drop implementation of BufferedUartRx and BufferedUartTx

1 files changed, 5 insertions, 0 deletions

diff --git a/embassy-hal-internal/src/atomic_ring_buffer.rs b/embassy-hal-internal/src/atomic_ring_buffer.rs
index 40ad9dc7a..00b7a1249 100644
--- a/embassy-hal-internal/src/atomic_ring_buffer.rs
+++ b/embassy-hal-internal/src/atomic_ring_buffer.rs
@@ -123,6 +123,11 @@ impl RingBuffer {
         Some(Writer(self))
     }
 
+    /// Return if buffer is available.
+    pub fn is_available(&self) -> bool {
+        !self.buf.load(Ordering::Relaxed).is_null() && self.len.load(Ordering::Relaxed) != 0
+    }
+
     /// Return length of buffer.
     pub fn len(&self) -> usize {
         self.len.load(Ordering::Relaxed)