this adds new COMPASS_SCALE, COMPASS_SCALE2 and COMPASS_SCALE3
parameters, which give the sensor scaling factor. It is used to
compensate for an incorrect scaling in a compass.
The 3D compass calibration process will set the correct value
automatically, otherwise users can set the value to a known value for
an existing compass
this is needed to ensure they are per-instance. Without this the SITL
backend produces zero for all but the first instance. The same would
be true for any multi-instance backend
this allows any ChibiOS board to specify that it wants to probe for
all possible external compass types with a define in hwdef.dat
It also implements duplicate compass detection for all i2c drivers,
ensuring we can't get a load of a driver on the same bus/address twice
See discussion here:
https://github.com/ArduPilot/ardupilot/issues/7331
we were getting some uninitialised variables. While it only showed up in
AP_SbusOut, it means we can't be sure it won't happen on other objects,
so safest to remove the approach
Thanks to assistance from Lucas, Peter and Francisco
this allows driver type to be disabled, to avoid probing them and
wasting CPU on sensors that are not being used
This also moves UAVCAN compass to be detected last, as discussed in the
dev call
Summary of significant changes:
-Autsave doesn't depend on STREAM_EXTRA3
-Don't risk only saving one compass on copter if CAL_ALWAYS_REBOOT is set
-Only calibrate compasses that are both health and marked for use (there was a inconsistency in handling the mask)
-Fix incorrect failure reporting on DO_ACCEPT_MAG_CAL with a mask of 0 if a channel was specifically not started
-Fix not starting the buzzer if the delay is set to 0 seconds
-Always send MAG_CAL_REPORT until its acknowledged
-Correct the field in MAG_CAL_REPORT for autosave to indicate if the compass had actually been saved, rather then being scheduled to be saved
-Remmove unused public interfaces
Andrew Tridgell
Peter Barker
Michael du Breuil
thomass
Lucas De Marchi
Jonathan Challinger
Randy Mackay
Francisco Ferreira
Jacob Walser
night-ghost
Lucas De Marchi
Miguel Arroyo
Mathieu OTHACEHE