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

[Steve Davies]

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
>
>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openvehicles.com/pipermail/ovmsdev/attachments/20201231/1cf28d93/attachment-0002.htm>