From 2ce7955614ab4ece074689f590a88679b2e75f5a Mon Sep 17 00:00:00 2001
From: Grant Morphett <grant@gmorph.com>
Date: Sun, 28 May 2017 14:08:14 +1000
Subject: [PATCH] SITL: Create gps_hdt_enabled varible for enable/disable HDT
 GPS sentence

---
 libraries/SITL/SITL.cpp | 2 ++
 libraries/SITL/SITL.h   | 1 +
 2 files changed, 3 insertions(+)

diff --git a/libraries/SITL/SITL.cpp b/libraries/SITL/SITL.cpp
index 61013453c6..b89933923f 100644
--- a/libraries/SITL/SITL.cpp
+++ b/libraries/SITL/SITL.cpp
@@ -168,6 +168,8 @@ const AP_Param::GroupInfo SITL::var_info2[] = {
     AP_GROUPINFO("GND_BEHAV",   41, SITL,  gnd_behav, -1),
     AP_GROUPINFO("BARO_COUNT",  42, SITL,  baro_count,  1),
 
+    AP_GROUPINFO("GPS_HDG",     43, SITL,  gps_hdg_enabled, 0),
+
     AP_GROUPEND
 
 };
diff --git a/libraries/SITL/SITL.h b/libraries/SITL/SITL.h
index 57e1e86e0f..50855f9fa3 100644
--- a/libraries/SITL/SITL.h
+++ b/libraries/SITL/SITL.h
@@ -175,6 +175,7 @@ public:
     AP_Int8  telem_baudlimit_enable; // enable baudrate limiting on links
     AP_Float flow_noise; // optical flow measurement noise (rad/sec)
     AP_Int8  baro_count; // number of simulated baros to create
+    AP_Int8 gps_hdg_enabled; // enable the output of a NMEA heading HDT sentence
 
     // wind control
     enum WindType {