[Ovmsdev] CAN errata fix regression?

[Michael Balzer]

The TxCallback error seems to only occur while the car is off. So this 
seems to be related to the bus being off (transceiver in TX 
error-passive state), and the OBD2 "ping" transmission failing.

As this doesn't seem to interfere with normal polling activity, it's not 
an urgent issue, just annoying.

Craig, with default level warnings you'll get errors as well. Error logs 
can only be disabled by level "none".

Regards,
Michael


Am 19.07.21 um 01:32 schrieb Craig Leres:
> On 7/18/21 1:58 PM, Michael Balzer wrote:
>> one of the ESP32CAN errata fixes seems to have caused a regression.
>>
>> I now frequently see this log message:
>>
>> esp32can: TxCallback: fatal error: TX buffer not available
>>
>> Meaning there was a TX buffer free interrupt, but the TX buffer 
>> status did not match that. I never saw this message before the errata 
>> fixes.
>>
>> Do others see this message?
>
> I don't see those but (a) my cars just do simple obd-ii style polling 
> and not beating on can that much and (b) I'm not sure I'm setup to log 
> that error.
>
> I have sd logging enabled, my default logging level is warnings, and I 
> have these componet levels set:
>
>     events    info
>     gsm-nmea    info
>     location    verbose
>     v-cadillacc2cts/v-chevroletc6corvette
>         verbose
>
> what should I change?
>
> I downloaded server logs for the car I've driven in the last week and 
> there are a few of these:
>
>     2021-07-15 07:48:36.968 PDT E (928486918) can: can1: 
> intr=-835016074 rxpkt=11131488 txpkt=3262 errflags=0x8040d9 rxerr=0 
> txerr=107 rxinval=0 rxovr=14 txovr=7474 txdelay=1141 txfail=2415
> wdgreset=0 errreset=0
>     2021-07-15 07:48:36.968 PDT E (928486918) can: can1: 
> intr=-835016069 rxpkt=11131488 txpkt=3262 errflags=0x8048d9 rxerr=0 
> txerr=131 rxinval=0 rxovr=14 txovr=7474 txdelay=1141 txfail=2415
> wdgreset=0 errreset=0
>     2021-07-15 07:48:36.968 PDT E (928486918) can: can1: 
> intr=-835016065 rxpkt=11131488 txpkt=3262 errflags=0x8048d9 rxerr=0 
> txerr=131 rxinval=0 rxovr=14 txovr=7474 txdelay=1141 txfail=2416
> wdgreset=0 errreset=0
>
> I've been looking at the 3/4 and 4/4 of the espressif errata changes 
> and they involve saving all chip registers, resetting the chip, and 
> restoring the registers...
>
>         Craig

-- 
Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
Fon 02333 / 833 5735 * Handy 0176 / 206 989 26


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