Beat Küng 2f2c0440c4 orb_exists: change semantics from (is published or subscribed) to (is published)
Existing users of orb_exists:
- logger (dynamic subscribe to multi-instances)
- mavlink (orb subscription)
- sdlog2
- preflightcheck (check for home_position)
- wait_for_topic shell command (it's not used)
- orb_group_count() (sensors: dynamic sensor addition)

All use-cases benefit from the changed semantics: they are really only
interested if there is a publisher, not another subscriber.
2017-10-18 08:40:32 +02:00
..
2017-09-16 21:29:52 +01:00
2017-10-12 12:03:22 +02:00