[Ovmsdev] MQTT and Ovms Server v3

[Robin O'Leary]

On Thu, Jul 19, 2018 at 11:30:18PM +0100, Robin O'Leary wrote:
> I did notice some odd things though.  Over a period of several hours,
> there were three occasions where mosquitto_sub showed the topic name
> truncated to "ovms/caederus/xxx/metr".  The values were different
> each time, and each was a plausible value from a different topic.
> I'm now running tcpdump to see if the truncation is from car->server or
> server->client, but of course it hasn't happened since.

Hmm, I wonder if it could be related that the module crashed and
rebooted at some point.  The web status page says:


Last boot was 12425 second(s) ago
Time at boot: 2018-07-20 08:48:33 GMT
This is reset #1 since last power cycle
Detected boot reason: Crash (8/14)
Crash counters: 1 total, 0 early
Last crash: IllegalInstruction exception on core 0

Registers:
PC : 0x00000000 PS : 0x00000000 A0 : 0x00000000 A1 : 0x00000000
A2 : 0x00000000 A3 : 0x00000000 A4 : 0x00000000 A5 : 0x00000000
A6 : 0x00000000 A7 : 0x00000000 A8 : 0x00000000 A9 : 0x00000000
A10 : 0x00000000 A11 : 0x00000000 A12 : 0x00000000 A13 : 0x00000000
A14 : 0x00000000 A15 : 0x00000000 SAR : 0x00000000 EXCCAUSE: 0x00000000
EXCVADDR: 0x00000000 LBEG : 0x00000000 LEND : 0x00000000 LCOUNT : 0x00000000
Backtrace:

Version: 3.1.008-62-gcdb67ef/ota_1/ro2 (build idf v3.1-dev-1583-g0fb2019f Jul 19 2018 11:04:42)


There doesn't seem to be much useful information there; any suggestions
how to track down the cause?
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