Merge pull request #42 from rust-embedded-community/rs/bugfix

Fixing an issue when writing empty buffers
rust-embedded-community · Dec 8, 2023 · ca0b3cc · ca0b3cc
2 parents 6611dc0 + 096742c
commit ca0b3cc
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/src/io.rs b/src/io.rs
@@ -49,6 +49,10 @@ impl<Bus: UsbBus> embedded_io::ReadReady for SerialPort<'_, Bus> {
 
 impl<Bus: UsbBus> embedded_io::Write for SerialPort<'_, Bus> {
     fn write(&mut self, buf: &[u8]) -> Result<usize, Self::Error> {
+        if buf.is_empty() {
+            return Ok(0);
+        }
+
         loop {
             match self.write(buf) {
                 // We are required by `embedded-io` to continue writing until at least one byte is