* remove unnecessary nullptr check, these are always called from an
initialized AP_DroneCAN so if it's nullptr something has gone
horrifically wrong
* pass in driver index instead of repeatedly calling function to get it
* simplify error handling; knowing exactly which allocation failed is not
super helpful and one failing likely means subsequent ones will too,
as it can only fail due to being out of memory
- split get_type into allocated_type and configured_type
- check allocated type rather than configured type when looking at backends
Prevents overwrite of random memory when backends are changed at runtime.
when we have aux battery information we had assumed the CAN device
would provide the battery remaining percentage. We should obey the "do
not use CAN SoC" with or without an AUX message
This fixes CAN battery monitors with a cell monitor
Thomas Watson
Peter Barker
Andrew Tridgell
Iampete1
Randy Mackay