[Ovmsdev] Can buses stop after some time

Tom Parker tom at carrott.org
Thu Jul 5 15:55:05 HKT 2018


I haven't had a chance to try to work out what is going on.

I can say that the second can interface doesn't work for very long 
before stopping. This manifests most obviously on my Leaf as a stopped 
odometer in the OVMS app. If you look at the metrics in the console then 
everything that comes from the Car CAN bus (ie the second CAN bus) has 
frozen.

The first CAN interface seems much more reliable, with SOC information 
from the EV bus being fairly reliably reported.

I haven't done the modification to make my 3.0 unit's GPS work so I 
haven't experienced the stolen detection.


On 05/07/18 18:34, Stein Arne Sordal wrote:
> Did anyone figure out what happens here?
> Now the OVMS thinks my car is stolen since it´s moving (GPS) and CAN2 is dead.
> Reboot of module brings CAN2 back to life for a period of time.
>
> -Stein Arne Sordal-
>
>
>
>> On 11 May 2018, at 12:29, Stein Arne Sordal <ovms at topphemmelig.no> wrote:
>>
>> Hi Tom
>>
>> I have seen this with my Leaf.
>> I´ve been on vacation, so I haven´t got time to test a lot, but it looks like one of the can buses stops. Started testing again today.
>>
>> -Stein Arne Sordal-
>>
>>
>>
>>> On 11 May 2018, at 12:22, Tom Parker <tom at carrott.org> wrote:
>>>
>>> Hi all,
>>>
>>> I synced up with master about a week ago and since then I've seen both can busses stop working. I still see the 12v battery metric changing, but everything that comes from the car stops. Rebooting the module with "module reset" does not seem to fix it, while make app-flash monitor does fix it. I haven't tried make monitor on it's own.
>>>
>>> Is anyone else seeing behavior like this?
>>>
>>> Sorry for the vague bug report. I'll spend some time later this weekend to try to gather more information.
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