[Ovmsdev] Issues since latest update (

Michael Balzer dexter at expeedo.de
Wed Sep 2 14:55:11 HKT 2020

OK, followed on my server.

It would have been an option to first let the users with issues test the
edge version. But I think the release should be OK, crash statistics of
the current version look much better so far.


Am 02.09.20 um 02:27 schrieb Mark Webb-Johnson:
> I’ve tagged, built, and released to EAP, 3.2.015 - based on head of edge.
> Not sure if this is generally releasable at this point (perhaps too
> rushed), but that should make it easier to access.
> Regards, Mark.
>> On 2 Sep 2020, at 2:38 AM, Derek Caudwell <d.caudwell at gmail.com
>> <mailto:d.caudwell at gmail.com>> wrote:
>> Hi,
>> Looking at the differences between and earlier it looks like
>> the use of EV Can rather than CAR Can to enable battery monitoring on
>> the Leaf was the main trigger for frequent event crashes (fixed 31/8
>> in commit 
>>         |07f25e3).|The polling being turned on (when vehicle ON was
>>         set) being more noticeable than at other times as both buses
>>         have a lot of traffic - but still not guaranteed to cause
>>         a crash as reported by GlynHudson in issue #409. Based on my
>>         own experience this issue could still occur randomly but less
>>         frequently when the vehicle was off/not polling. 
>> The issue would still occur even if enable canwrites were set to off
>> as reported by GlynHudson in #409, as canwrite logic was not
>> implemented in the Leaf code until 19/8 in commit 41ac2f1.
>> A temporary workaround was also implemented in the Leaf code to
>> switch buses prior to polling on 16/8 in commit 
>>         |32db785.|
>> The subsequent poller rework has enabled the Leaf to direct polls to
>> the correct bus, allowing the PID polls originally defined (but not
>> working depending on the car state) to function when the vehicle is
>> on or off and charging. Also the IncomingPollReply code was tidied up
>> and aligned with that used for the Twizy. The vehicle poller extra
>> frame request delay was also originally fixed at 25ms uneccessarily
>> slowing down large replies such as the battery cell voltage
>> responses, now set to 0. These changes mean the polling for the Leaf
>> is now working as it should.
>> The current edge version appears to be stable and allows PID polling
>> reliably to both buses without causing crashes. I have been running
>> it for 24h with 6 start/stop events without issue. 
>> If others agree could be staged for EAP release to move Leaf
>> users off A note could be to stating there is a
>> known stability issue on the Leaf and to use or similar.
>> GlynHudson and others on other Leaf models can test to ensure we are
>> back to a stable release with the required polling functionality
>> working. 
>> Kind regards
>> Derek
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Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
Fon 02333 / 833 5735 * Handy 0176 / 206 989 26

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