Mission topic: make nav_cmd compatible to the mavlink command

src/modules/uORB/topics/mission.h

@@ -46,14 +46,17 @@
 #include <stdbool.h>
 #include "../uORB.h"
 
+/* compatible to mavlink MAV_CMD */
 enum NAV_CMD {
-	NAV_CMD_WAYPOINT = 0,
-	NAV_CMD_LOITER_TURN_COUNT,
-	NAV_CMD_LOITER_TIME_LIMIT,
-	NAV_CMD_LOITER_UNLIMITED,
-	NAV_CMD_RETURN_TO_LAUNCH,
-	NAV_CMD_LAND,
-	NAV_CMD_TAKEOFF
+	NAV_CMD_WAYPOINT=16,
+	NAV_CMD_LOITER_UNLIMITED=17,
+	NAV_CMD_LOITER_TURN_COUNT=18,
+	NAV_CMD_LOITER_TIME_LIMIT=19,
+	NAV_CMD_RETURN_TO_LAUNCH=20,
+	NAV_CMD_LAND=21,
+	NAV_CMD_TAKEOFF=22,
+	NAV_CMD_ROI=80,
+	NAV_CMD_PATHPLANNING=81
 };
 
 /**
@@ -76,7 +79,7 @@ struct mission_item_s
 	float yaw;			/**< in radians NED -PI..+PI 				*/
 	float loiter_radius;		/**< loiter radius in meters, 0 for a VTOL to hover     */
 	int8_t loiter_direction;	/**< 1: positive / clockwise, -1, negative.		*/
-	enum NAV_CMD nav_cmd;		/**< true if loitering is enabled			*/
+	enum NAV_CMD nav_cmd;		/**< navigation command					*/
 	float radius;			/**< radius in which the mission is accepted as reached in meters */
 	float time_inside;		/**< time that the MAV should stay inside the radius before advancing in seconds */
 	bool autocontinue;		/**< true if next waypoint should follow after this one */