AP_DDS: Takeoff interface for Copter/QPLANE

[tizianofiorenzani]

Takeoff Service interface

I would like a new service that allows to command takeoff for copters/qplane. Current interfaces lack the ability to takeoff a copter, as commanding a location in Guided mode fails, unless vehicle is flying.

Solution

• Service /ap/start_takeoff with argument altitude = takeoff altitude in meter.
• We can use the interface AP::vehicle()->start_takeoff(alt), which returns false by default, if not overwritten by the vehicle implementation.
• The response could be:
  • result true if takeoff has started.
  • error, which collects reasons why it fails, like NOT_AVAILABLE_FOR_THIS_VEHICLE

Platform
[ ] All
[ ] AntennaTracker
[ x ] Copter
[ x ] Plane
[ ] Rover
[ ] Submarine

[Ryanf55]

See #26911

[tizianofiorenzani]

@Ryanf55 that was easy ;-). Closing