add support for HCI latency probing
diff --git a/apps/bench.py b/apps/bench.py
index ca30cb9..d4635d4 100644
--- a/apps/bench.py
+++ b/apps/bench.py
@@ -513,6 +513,7 @@
             await self.packet_io.send_packet(bytes([PacketType.RESET]))
 
             self.current_packet_index = 0
+            self.latencies = []
             await self.send_next_ping()
 
             await self.done.wait()