Merge remote-tracking branch 'upstream/master' into launchdetector

Conflicts:
	src/modules/fw_pos_control_l1/fw_pos_control_l1_main.cpp

src/lib/ecl/ecl.h

@@ -38,7 +38,6 @@
  */
 
 #include <drivers/drv_hrt.h>
-#include <geo/geo.h>
 
 #define ecl_absolute_time hrt_absolute_time
-#define ecl_elapsed_time hrt_elapsed_time
+#define ecl_elapsed_time hrt_elapsed_time

src/lib/ecl/l1/ecl_l1_pos_controller.cpp

@@ -38,6 +38,8 @@
  *
  */
 
+#include <float.h>
+
 #include "ecl_l1_pos_controller.h"
 
 float ECL_L1_Pos_Controller::nav_roll()
@@ -231,8 +233,15 @@ void ECL_L1_Pos_Controller::navigate_loiter(const math::Vector<2> &vector_A, con
 	/* calculate the vector from waypoint A to current position */
 	math::Vector<2> vector_A_to_airplane = get_local_planar_vector(vector_A, vector_curr_position);
 
-	/* store the normalized vector from waypoint A to current position */
-	math::Vector<2> vector_A_to_airplane_unit = (vector_A_to_airplane).normalized();
+	math::Vector<2> vector_A_to_airplane_unit;
+
+	/* prevent NaN when normalizing */
+	if (vector_A_to_airplane.length() > FLT_EPSILON) {
+		/* store the normalized vector from waypoint A to current position */
+		vector_A_to_airplane_unit = vector_A_to_airplane.normalized();
+	} else {
+		vector_A_to_airplane_unit = vector_A_to_airplane;
+	}
 
 	/* calculate eta angle towards the loiter center */
 

src/lib/external_lgpl/tecs/tecs.cpp

@@ -3,13 +3,10 @@
 #include "tecs.h"
 #include <ecl/ecl.h>
 #include <systemlib/err.h>
+#include <geo/geo.h>
 
 using namespace math;
 
-#ifndef CONSTANTS_ONE_G
-#define CONSTANTS_ONE_G GRAVITY
-#endif
-
 /**
  * @file tecs.cpp
  *

src/lib/external_lgpl/tecs/tecs.h

@@ -28,16 +28,7 @@ class __EXPORT TECS
 {
 public:
 	TECS() :
-
-		_airspeed_enabled(false),
-		_throttle_slewrate(0.0f),
-		_climbOutDem(false),
-		_hgt_dem_prev(0.0f),
-		_hgt_dem_adj_last(0.0f),
-		_hgt_dem_in_old(0.0f),
-		_TAS_dem_last(0.0f),
-		_TAS_dem_adj(0.0f),
-		_TAS_dem(0.0f),
+		_pitch_dem(0.0f),
 		_integ1_state(0.0f),
 		_integ2_state(0.0f),
 		_integ3_state(0.0f),
@@ -45,8 +36,16 @@ public:
 		_integ5_state(0.0f),
 		_integ6_state(0.0f),
 		_integ7_state(0.0f),
-		_pitch_dem(0.0f),
 		_last_pitch_dem(0.0f),
+		_vel_dot(0.0f),
+		_TAS_dem(0.0f),
+		_TAS_dem_last(0.0f),
+		_hgt_dem_in_old(0.0f),
+		_hgt_dem_adj_last(0.0f),
+		_hgt_dem_prev(0.0f),
+		_TAS_dem_adj(0.0f),
+		_STEdotErrLast(0.0f),
+		_climbOutDem(false),
 		_SPE_dem(0.0f),
 		_SKE_dem(0.0f),
 		_SPEdot_dem(0.0f),
@@ -55,9 +54,9 @@ public:
 		_SKE_est(0.0f),
 		_SPEdot(0.0f),
 		_SKEdot(0.0f),
-		_vel_dot(0.0f),
-		_STEdotErrLast(0.0f) {
-
+		_airspeed_enabled(false),
+		_throttle_slewrate(0.0f)
+	{
 	}
 
 	bool airspeed_sensor_enabled() {