Heading data is already available in "float" mode but really inaccurate
(can be off by 45 degrees). It's then better to not use it when in
"float" mode as it will disturb the EKF2's estimate and the filter can
continue to keep an accurate heading even without direct observations.
in air bias estimation is usually really accurate and should be weighted
more heavily compared to the calibration parameters that are often
more approximate given the worse magnetic environment near the ground.
- since last_us is set to 0 every time the bias is not observable, the
total time was also reset -> needed 30 consecutive seconds in mag 3D
to be declared "stable"
- after landing, the mag_aligned_in_flight flag is reset. Using this for
bias validity makes it invalid before we have a chance to save it to
the calibration.
Opt flow raw innovations can be really large on ground due to the small
distance to the ground (vel = flow / dist). To make the pre-flight check
more meaningful, scale it with the current distance.
Channel values stay over one unit test but some tests assumed they are
reset each time. Reset the channel after these mode button tests.
Parameters survive between unit tests presumably as long as
the bianry runs. Reset them if a test requires that.
This allows PWM and all other output methods to configure
stopped, idling and full thrust points and use them consistently.
The fact that a fixed wing motor can be stopped when zero thrust
is demanded is explicit and could in principle even be disabled.
The mechanism is the same as for a standard VTOL stopping the
multicopter motors in the fixed wing flight phase.
When switching into Hold mode establish a Loiter around current position,
even if we were before already loitering (eg in Mission mode).
Signed-off-by: Silvan Fuhrer <silvan@auterion.com>
Instead of hard-coding the tilting duration (from FW to MC tilt),
expose it as a parameter (VT_BT_TILT_DUR). The default is the same
as the hard-coded value previously (1s).
Slower tilting mechanisms need a higher value here, while for smaller
ones a too high value results in unnecessary delays till the motors
are in hover configuration.
Signed-off-by: Silvan Fuhrer <silvan@auterion.com>
This affects how soon after a backtransition the vehicle has the
full hover controller running again. Specifically it reduces the
duration of the ramp down of the motors prior to tilting them.
Signed-off-by: Silvan Fuhrer <silvan@auterion.com>
bresch