Raise exception from device

HCDevice.py

@@ -200,8 +200,7 @@ class HCDevice:
             if buf is None:
                 return None
         except Exception as e:
-            print(self.name, "receive error", e, traceback.format_exc())
+            raise e
-            return None
 
         try:
             return self.handle_message(buf)