From 0e33907cf77b8247259dad1a74b6d126740f720e Mon Sep 17 00:00:00 2001
From: Francisco Ferreira <francisco-ferreira@mail.telepac.pt>
Date: Thu, 21 Mar 2019 23:39:22 +0000
Subject: [PATCH] AP_HAL_SITL: change NMEA output to use new macro

---
 libraries/AP_HAL_SITL/sitl_gps.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libraries/AP_HAL_SITL/sitl_gps.cpp b/libraries/AP_HAL_SITL/sitl_gps.cpp
index 3e737eea00..1d6f7bf5a3 100644
--- a/libraries/AP_HAL_SITL/sitl_gps.cpp
+++ b/libraries/AP_HAL_SITL/sitl_gps.cpp
@@ -674,7 +674,7 @@ void SITL_State::_update_gps_nmea(const struct gps_data *d, uint8_t instance)
                      d->have_lock?_sitl->gps_numsats:3,
                      2.0,
                      d->altitude);
-    float speed_knots = norm(d->speedN, d->speedE)*1.94384449f;
+    float speed_knots = norm(d->speedN, d->speedE) * M_PER_SEC_TO_KNOTS;
     float heading = ToDeg(atan2f(d->speedE, d->speedN));
     if (heading < 0) {
         heading += 360.0f;