+#if CONFIG_SER_RXTIMEOUT != -1
+/*!
+ * Discard input to resynchronize with remote end
+ *
+ * Discard incoming data until the port stops receiving
+ * characters for at least \a delay milliseconds.
+ *
+ * \note Serial errors are reset before and after executing the purge.
+ */
+void ser_resync(struct Serial *port, time_t delay)
+{
+ time_t old_rxtimeout = port->rxtimeout;
+
+ ser_settimeouts(delay, ser->txtimeout);
+ do
+ {
+ ser_setstatus(port, 0);
+ ser_getchar(port);
+ }
+ while (!(ser_getstatus(port) & SERRF_RXTIMEOUT));
+
+ /* Restore port to an usable status */
+ ser_setstatus(port, 0);
+ ser_settimeouts(old_rxtimeout, ser->txtimeout);
+}
+#endif /* CONFIG_SER_RXTIMEOUT */
+