From 418eb48bb2dab7501f21751792c709b7c69884fa Mon Sep 17 00:00:00 2001
From: Andrew Tridgell <andrew@tridgell.net>
Date: Thu, 12 Dec 2019 20:37:22 +1100
Subject: [PATCH] GCS_MAVLink: fixed critical error on prefight cal ops

---
 libraries/GCS_MAVLink/GCS_Common.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libraries/GCS_MAVLink/GCS_Common.cpp b/libraries/GCS_MAVLink/GCS_Common.cpp
index 6445df7b88..a6901c31f8 100644
--- a/libraries/GCS_MAVLink/GCS_Common.cpp
+++ b/libraries/GCS_MAVLink/GCS_Common.cpp
@@ -3352,6 +3352,7 @@ MAV_RESULT GCS_MAVLINK::_handle_command_preflight_calibration_baro()
 
 MAV_RESULT GCS_MAVLINK::_handle_command_preflight_calibration(const mavlink_command_long_t &packet)
 {
+    EXPECT_DELAY_MS(30000);
     if (is_equal(packet.param1,1.0f)) {
         if (!calibrate_gyros()) {
             return MAV_RESULT_FAILED;