Mbed-os: ublox: UBLOX_EVK_ODIN_W2 hard faults for wifi test (armc6)

[0xc0170]

Description

Logs can be found Test logs: http://mbed-os-ci.s3-website-eu-west-1.amazonaws.com/?prefix=jenkins-ci/ARMmbed/mbed-os/mbed-os-ci/mbed-os-5.12/artifacts/mbed-os-5.12/2/greentea-test/1406/ERROR/UBLOX_EVK_ODIN_W2/ARMC6/

This is in nightly. Wifi seems to be hard faulting for ARMC6.

5.12.0-rc1 nightly fails with this error.

Issue request type

[ ] Question
[ ] Enhancement
[X] Bug

cc @ARMmbed/team-ublox

@ARMmbed/mbed-os-ipcore Known issue or new one?

[michalpasztamobica]

Thanks, Martin. Yes, we've also noticed and we are already working on it in ONME-4220.

[0xc0170]

Great! Once this is cloned to our jira, please link these 2 issues and fix should close this one.

[michalpasztamobica]

My findings are that this commit introduced the issue (switching to ARMC6) and that the hard fault takes place when this line is executed.

The hard fault message is:

[1551962056.94][CONN][RXD] ++ MbedOS Error Info ++
[1551962056.94][CONN][RXD] Error Status: 0x80FF013D Code: 317 Module: 255
[1551962056.94][CONN][RXD] Error Message: Fault exception
[1551962056.96][CONN][RXD] Location: 0x801B64D
[1551962056.96][CONN][RXD] Error Value: 0x800D8BE
[1551962056.96][CONN][RXD] Current Thread: application_unnamed_thread  Id: 0x2000742C Entry: 0x8010FD1 StackSize: 0x1000 StackMem: 0x20012940 SP: 0x2002FF18
[1551962056.98][CONN][RXD] For more info, visit: https://mbed.com/s/error?error=0x80FF013D&tgt=UBLOX_EVK_ODIN_W2
[1551962056.98][CONN][RXD] -- MbedOS Error Info --
[1551962056.98][CONN][RXD]
[1551962056.98][CONN][RXD] = System will be rebooted due to a fatal error =
[1551962056.99][CONN][WRN] UnicodeDecodeError encountered!

@ARMmbed/team-ublox , would you please take a look at this issue?

[ciarmcom]

Internal Jira reference: https://jira.arm.com/browse/MBOCUSTRIA-964

[0xc0170]

My findings are that this commit introduced the issue (switching to ARMC6) and that the hard fault takes place when this line is executed.

@ARMmbed/team-ublox , would you please take a look at this issue?

Is that correct the commit above is causing this hard fault? Any update?

cc @screamerbg

[0xc0170]

@ARMmbed/team-ublox Just want to confirm, the next driver update should have this resolved?

[aqib-ublox]

@0xc0170 here is internal jira for ARMC6 https://jira.u-blox.net/browse/TE_OM2-115. point is can u device a mechanism how to debug a ARMC6 (ODIN_w2) binary using eclipse. It would be good if u can have detail procedure.

[0xc0170]

@0xc0170 here is internal jira for ARMC6 https://jira.u-blox.net/browse/TE_OM2-115. point is can u device a mechanism how to debug a ARMC6 (ODIN_w2) binary using eclipse. It would be good if u can have detail procedure.

would you use mbed studio? I'll contact you over email to get more details

[0xc0170]

This is the official documentation we have : https://os.mbed.com/docs/mbed-os/v5.12/tutorials/eclipse.html

Isn't this sufficient to keep you running debugging session ? It uses eclipse + openOCD (odin supported there, not yet in pyOCD), or ST provides gdb as well?)

[0xc0170]

I also found private notebook describing how to set up openOCD with odin (it's almost 2 years old, might be still a good start): https://os.mbed.com/users/janjongboom/notebook/debugging-ublox_evk_odin_w2-with-openocd-and-visua/#

You should be able to debug armc6 application using gdb in eclipse. These 2 links should help you. Without much details where you are having issues, we might not be able to help further.

It might be good to start a new issue to get this eclipse + armc6 question further - I would recommend asking on the forum, there are users who use eclipse daily.

[SeppoTakalo]

https://github.com/mbedmicro/pyOCD/tree/master/pyocd/probe/stlink

There seems to be some development regarding ST-Link support for pyOCD.
Sounds like we need to have proper documentation / guide on our Handbook how to set up the debugger for most commom UIs and debuggers.

For example gdbservers:

• pyOCD + DAPlink
• pyOCD + ST-Link
• OpenOCD + ST-Link

Then UIs:

• command line GDB
• Eclipse + any of those gdbservers
• Arm studio
• Keil
• IAR

[MarceloSalazar]

Depends on https://github.com/ARMmbed/mbed-os/issues/10814

[aqib-ublox]

have just fixed hard fault issue please see logs
mbed-os-wifi-test.txt

fix would be generated in next PR.

[aqib-ublox]

https://github.com/ARMmbed/mbed-os/pull/11370 generated @0xc0170