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

[Ethan Rose]

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
>> 
>> 
>> 
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