From cd1198bf49709d1904f5391f71b63ade795842a6 Mon Sep 17 00:00:00 2001
From: Peter Barker <pbarker@barker.dropbear.id.au>
Date: Wed, 24 Jun 2020 13:15:24 +1000
Subject: [PATCH] autotest: drain mav before attempting to run a command

We're losing an arbitrary amount of data while getting the ACK, so it's
fine to lose whatever is in the buffer.
---
 Tools/autotest/common.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Tools/autotest/common.py b/Tools/autotest/common.py
index f7c98fee4f..9f4221bbb5 100644
--- a/Tools/autotest/common.py
+++ b/Tools/autotest/common.py
@@ -2952,6 +2952,7 @@ class AutoTest(ABC):
                 target_compid=None,
                 timeout=10,
                 quiet=False):
+        self.drain_mav_unparsed()
         self.get_sim_time() # required for timeout in run_cmd_get_ack to work
         self.send_cmd(command,
                       p1,