improve serial impl

src/transport/serial.rs

@@ -60,7 +60,8 @@ impl PacketTransportSerialCobs {
     pub fn receive<F: FnMut(&[u8])>(&mut self, mut f: F) -> Result<usize, super::ReceiveError> {
         let mut decoded_packets = 0;
         loop {
-            let read_bytes = self.serial.read(&mut self.reception_buffer)?;
+            match self.serial.read(&mut self.reception_buffer) {
+                Ok(read_bytes) => {
                     if read_bytes == 0 {
                         break;
                     }
@@ -75,6 +76,16 @@ impl PacketTransportSerialCobs {
                         }
                     }
                 }
+                Err(e) => {
+                    if e.kind() == std::io::ErrorKind::TimedOut
+                        || e.kind() == std::io::ErrorKind::WouldBlock
+                    {
+                        break;
+                    }
+                    return Err(super::ReceiveError::Io(e));
+                }
+            }
+        }
         Ok(decoded_packets)
     }