[Ovmsdev] Investigating crashes. And, OVMS stopped collecting data

[Steve Davies]

Hi Ethan,

Thanks for the info.  Naively doesn't seem like a javascript program should
be able to crash the whole system.

I did think about rather posting to ABRP from the server side - IE as data
is sent to the server then code on the server sends the update to ABRP.

But maybe I buried the lead, which really was to find out how I can get a
lower level view of what crashed the board, and how to turn those memory
addresses into a better idea as to where in the code the crash occurred.

Do you know, or Michael can you help?

Thanks,
Steve



On Fri, 1 Jan 2021 at 03:11, Ethan Rose <ethan at ethanrose.co.nz> wrote:

> I too have crashes often when running the ABRP plugin on my NL ‘13. I’ve
> resorted to using the LeafSpy/BT option instead on long drives as it’s very
> unreliable.
>
> Regards,
>
> Ethan Rose
>
> On 1/01/2021, at 08:52, Steve Davies <steve at telviva.co.za> wrote:
>
> 
> Well something had obviously gone off the rails since eventually the OVMS
> seemed to crash - couldn't ping it - and didn't come back.
>
> I power-cycled it and it came back and got a GPS lock.
>
> Was there ever discussion of a watchdog to reset things if it goes wonky?
>
> Steve
>
> On Thu, 31 Dec 2020 at 19:37, Steve Davies <steve at telviva.co.za> wrote:
>
>> Hi,
>>
>> I went for a scenic drive partly to test my OVMS I3 stuff and feeding
>> data to ABRP.
>>
>> When I got home I found that ABRP had my drive ending say 15km from
>> home.  And when I checked OVMS it also thought I was in the same spot.
>>
>> [6315S] v.p.altitude                             65.4m
>> [6315S] v.p.direction                            97.5°
>> [6315S] v.p.gpshdop                              1
>> [9999S] v.p.gpslock                              yes
>> [6315S] v.p.gpsmode                              AN
>> [6315S] v.p.gpsspeed                             18.7052km/h
>> [6315S] v.p.latitude                             -34.0808
>> [-----] v.p.location
>> [6315S] v.p.longitude                            18.4327
>> [5282S] v.p.odometer                             14901km
>> [6315S] v.p.satcount                             9
>> [5195S] v.p.speed                                0km/h
>> [5195S] v.p.trip                                 85km
>>
>> You can see that the metrics are very old (I show more digits in my
>> version).
>>
>> I then looked further and no metrics seemed to be updating - for instance
>> the m.time.utc wasn't updating.
>>
>> I was starting to look at it when my OVMS rebooted (which seems to happen
>> sometimes.  I've also had the logging stop - I noticed one less task so I
>> presume that's related).
>>
>>
>> Last boot was 127 second(s) ago
>> Time at boot: 2020-12-31 19:10:09 SAST
>> This is reset #8 since last power cycle
>> Detected boot reason: Crash (12/12)
>> Reset reason: Exception/panic (4)
>> Crash counters: 1 total, 0 early
>>
>> Last crash: LoadProhibited exception on core 1
>> Registers:
>> PC : 0x400f0161 PS : 0x00060a30 A0 : 0x800f023a A1 : 0x3ffe5920
>> A2 : 0x3ffb5738 A3 : 0x00000000 A4 : 0x3f8566a8 A5 : 0x00000001
>> A6 : 0x3ffe5990 A7 : 0x3f8567d0 A8 : 0x800f015c A9 : 0x3ffe5910
>> A10 : 0x00000000 A11 : 0x3f414cb1 A12 : 0x00000002 A13 : 0x00000001
>> A14 : 0x000000fe A15 : 0x3ffd4f90 SAR : 0x00000004 EXCCAUSE: 0x0000001c
>> EXCVADDR: 0x00000000 LBEG : 0x4008bcf1 LEND : 0x4008bd01 LCOUNT :
>> 0xfffffffd
>> Backtrace:
>> 0x400f0161 0x400f0237 0x400fe87f 0x40103d4b 0x40103f02 0x400fe8af
>> 0x4013a432
>> Version: 3.2.015-267-g39dba375-dirty/ota_1/main (build idf
>> v3.3.4-845-gd59ed8bba-dirty Dec 26 2020 15:37:52)
>>
>> After this crash and restart m.time.utc was empty. I rebooted and its
>> still missing - does it only appear once NTP syncs or something?
>>
>> Also I have no GPS position, gpsmode or anything like that (but I have a
>> 3G session with the hologram sim and roaming on one of the local cellular
>> operators).
>>
>> I've made sure the GPS puck is out in the open and I guess I'll wait -
>> does the time come from the GPS?  And any ideas why I'm not getting a GPS
>> lock suddenly?
>>
>> Apart from that - how do I debug crashes?  I went looking for some sort
>> of loader memory map in the build directory to try turn the PC and
>> backtrace addresses into something more useful but didn't pick up anything.
>>
>> Thanks
>> Steve
>>
>>
>>
>> _______________________________________________
> OvmsDev mailing list
> OvmsDev at lists.openvehicles.com
> http://lists.openvehicles.com/mailman/listinfo/ovmsdev
>
> _______________________________________________
> OvmsDev mailing list
> OvmsDev at lists.openvehicles.com
> http://lists.openvehicles.com/mailman/listinfo/ovmsdev
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openvehicles.com/pipermail/ovmsdev/attachments/20210101/0b977b3d/attachment-0003.htm>