add PX4 advertise macro

src/examples/publisher/publisher.cpp

@@ -62,7 +62,7 @@ PX4_MAIN_FUNCTION(publisher)
 	 * than we can send them, the number here specifies how many messages to
 	 * buffer up before throwing some away.
 	 */
-	px4::Publisher * rc_channels_pub = n.advertise<PX4_TOPIC_T(rc_channels)>(PX4_TOPIC(rc_channels));
+	px4::Publisher * rc_channels_pub = PX4_ADVERTISE(n, rc_channels);
 
 
 	px4::Rate loop_rate(10);

src/platforms/px4_defines.h

@@ -69,3 +69,4 @@
 /* Overload the PX4_SUBSCRIBE macro to suppport methods and pure functions as callback */
 #define PX4_GET_SUBSCRIBE(_1, _2, _3, _4, _5, NAME, ...) NAME
 #define PX4_SUBSCRIBE(...) PX4_GET_SUBSCRIBE(__VA_ARGS__, PX4_SUBSCRIBE_CBMETH, PX4_SUBSCRIBE_CBFUNC)(__VA_ARGS__)
+#define PX4_ADVERTISE(_nodehandle, _name) _nodehandle.advertise<PX4_TOPIC_T(_name)>(PX4_TOPIC(_name))