I'm pretty new to DIY drones, having had about a dozen or so flights now with my APM in a Skywalker.
Currently I don't have a data radio (xbee) so I setup my missions prior to takeoff with APM Planner over USB.
On my last mission I wanted to loop back to the first waypoint again (indefinitely) so I set a DO_JUMP(1, -1) but it didn't work as expected, instead returning to HOME after the last waypoint and loitering there.
A few questions:
1. If I just create a mission with only WAYPOINT commands, what should happen once the final waypoint is reached? I seem to RTL and loiter (this is good, but I haven't seen the behavior documented anywhere).
2. In APM Planner, creating a DO_JUMP command does not seem to work. I have noticed in the MAVLINK doco that the repeat parameter is actually the third param, not the second as suggested by the APM Planner column headings, so maybe there is a bug in APM planner and I should actually enter DO_JUMP(1, _, -1) ? (I haven't had a chance to try this yet).