on the BF548 CAN module, how can I distiguish between
"arbitration lost", which is not an error condition, and
"no acknowledge", which is an error ?
As the AAx bits and AAIS / AAIF bits are set in both
cases, I see no means to find out, if there was an error
or just a lost arbitration. Or is the TRSx bit not reset, if
arbitration was lost (assuming single shot mode is off) ?