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SubjectRe: [PATCH v2 1/1] can: ucan: add driver for Theobroma Systems UCAN devices
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Am 14.03.2018 um 20:07 schrieb Jakob Unterwurzacher:
> On 14.03.18 11:04, Wolfgang Grandegger wrote:
>>>>  (000.000443)  can0  20000034   [8]  00 0C 00 00 00 00 78 00
>>>> ERRORFRAME
>>>>     controller-problem{rx-error-warning,tx-error-warning}
>>>>     transceiver-status
>>>>     no-acknowledgement-on-tx
>>>>     error-counter-tx-rx{{120}{0}}
>>>>  (000.000444)  can0  20000034   [8]  00 3C 00 00 00 00 80 00
>>>> ERRORFRAME
>>>>
>>>> controller-problem{rx-error-warning,tx-error-warning,rx-error-passive,tx-error-passive}
>>
>>
>> Just,
>>
>>        controller-problem{rx-error-passive,tx-error-passive} [...]
>>
>> Back to error active is missing!?
>
> That was indeed missing. We have fixed the missing back-to-error-active
> in our firmware.
>
> Also, we no longer send the controller status in every error frame, but
> only on state changes (see below) which seems to be how other drivers
> are handling things.

Good, it would also be useful, if berr-reporting could be enabled by the
firmware. This avoids a lot of traffic and load, especially if no cable
is connected.

Wolfgang.

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