Derek,

I've currently got two candidates for this:

a) the yet again broken PSRAM toolchain fix: https://github.com/espressif/esp-idf/issues/2892#issuecomment-667099130

b) the recently discovered concurrency issue in the OBD poller: https://github.com/openvehicles/Open-Vehicle-Monitoring-System-3/pull/405#issuecomment-674499551

I didn't get a response to a), and b) is currently being worked on by Soko & Thomas.

On a)… it may be worth trying the pre-release toolchain from that issue, we've been using before. I switched to the "final" release before fixing the mutex WDT bug, so maybe the mutex bug cloaked a new issue from the new toolchain bug.

On b)… as you're using the Leaf, and the Leaf code uses the poller to retrieve battery cell data (= lots of frames), you may be experiencing this.

A quick local fix without adding Sokos polling extension would be:
  1. In vehicle.cpp, line 2040 (in PollerSend), change "if (m_poll_ml_remain > 7)" to "if (m_poll_ml_remain > 0)"
  2. Insert before line 2128 (in PollerReceive): "OvmsMutexLock lock(&m_poll_mutex);"
This wouldn't fix all found issues with the current poller, but should avoid the potential reply handler runaway situation.

I'd give b) a try first.

Regards,
Michael


Am 18.08.20 um 04:04 schrieb Derek Caudwell:
With DukTape disabled and Mcp2515 overflow logging turned off the module has run and been stable for 5 days or so however I had it crash today with the following log entry.

2020-08-18 13:16:55 NZST I (12067) ovms-server-v3: Tx notify ovms/nismo/notify/data/debug.crash/1/0=*-OVM-DebugCrash,0,2592000,3.2.014-45-g390b4759-dirty/ota_0/edge (build idf v3.3.2-881-g22d636b7b-dirty Aug 13 2020 19:05:42),13,Crash,12,12,1,0,abort(),0,,0x4008e96b 0x4008ec05 0x400e6aec 0x40084122 ,6,Task watchdog,ticker.1,esp32wifi,0,IDLE1 

It appears the issue remains (note this is with OVMS Events set to priority 19), however the likelihood of it causing the module to crash is reduced. 
 
Let me know if you have other suggestions to debug it, otherwise I will re-enable DukTape and see if anything changes.

Cheers
Derek

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