topic Re: Debug mode keeps hangs in i.MX RT Crossover MCUs

Debug mode keeps hangs

ping1 — Wed, 02 Apr 2025 14:19:38 GMT

Dear all

I am using latest v24.12 IDE and J-Link Ultra+ debugger, recently moved to freeRTOS, try to debug and it keeps says "Not Responding" when I try to suspend it and exit the debug mode, sometimes it says something like suspend times out, and exit too. I am not sure this is to do with freeRTOS introduction or new IDE, these two things are all new to me.

Or am I missing something?

Thank you for your attention, anyone has similar issue? any suggestions please?

Ping

Re: Debug mode keeps hangs

ping1 — Wed, 02 Apr 2025 14:32:15 GMT

Further, clicked Suspect button and ended up Terminated.

Re: Debug mode keeps hangs

Kan_Li — Thu, 03 Apr 2025 02:33:37 GMT

Hi @ping1 ,

Which example are you playing with? Is it some FreeRTOS demo out of the SDK? Please kindly clarify. Actually I have experienced similar issue when I force the application jumping to an area without any code there.

Have a great day,
Kan

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Re: Debug mode keeps hangs

ping1 — Thu, 03 Apr 2025 06:46:25 GMT

Thanks for reply!

I am using my own firmware and board, the product is on market already and currently change it to be freeRTOS based.

It is earlier and quick to debug on non-OS based code. but also IDE version is changed too. So I am not sure what really causes this.

Regards!

Ping

Re: Debug mode keeps hangs

Kan_Li — Thu, 03 Apr 2025 08:58:01 GMT

Hi @ping1 ,

Have you debug any SDK FreeTOS demo with the current IDE on your own board? If no issue happened, the root cause would not be on IDE side.

Have a great day,
Kan

Re: Debug mode keeps hangs

ping1 — Thu, 03 Apr 2025 09:48:53 GMT

Hi, Kan

Thanks for your reply, the issue is intermittent, and hard to find the root cause, it is probably down to my code, I just want to make sure there is no additional setting in debug side when using freeRTOS.

Regards!

Ping

Re: Debug mode keeps hangs

ping1 — Fri, 04 Apr 2025 08:56:19 GMT

Hi, Kan_Li

I found I lost debug communication when my code is calling LOCK_TCPIP_CORE() & UNLOCK_TCPIP_CORE() function. if I don't add these pair, it give me message "Function called without call locking" and hangs forever. when I add this pair, it seems executed through, but I lost debug communication afterwards, is this expected? any explanation for this behaviour? or just a coincide?

Regards!

Ping

Re: Debug mode keeps hangs

Kan_Li — Mon, 07 Apr 2025 08:46:10 GMT

Hi @ping1 ,

Did you use a console other than UART? From the source code, LOCK_TCPIP_CORE() & UNLOCK_TCPIP_CORE() function has nothing related with the UART. I think maybe you can try to debug some FreeRTOS LWIP demo out of SDK on your own board, if the problem is still there, please check your board design, and if not, please check your code implementation.

Hope that makes sense,

Have a great day,
Kan

Re: Debug mode keeps hangs

ping1 — Mon, 07 Apr 2025 09:02:55 GMT

Hi, Kan_Li

Thanks for reply.

I don't use console Uart for debug if that is what you mean, I use J-Link Ultra on my target board, I don't understand how my debug issue is related to Uart, could you explain please? I do use a few UART on communication though.

Regards!

Ping

Re: Debug mode keeps hangs

Kan_Li — Tue, 08 Apr 2025 05:38:11 GMT

Hi @ping1 ,

Thanks for the clarification! I just tried to debug lwip_mqtt_freertos demo on RT1050EVKB, the debug is fine as shown below.

Have you ever try such demo on your own board? was the problem still there? Please kindly clarify.

Have a great day,
Kan

Re: Debug mode keeps hangs

ping1 — Tue, 08 Apr 2025 07:35:06 GMT

Hi, Kan_Li

My project is started from the mqtt demo, I tried twice to debug the earlier version, sometimes it is ok, sometimes not. The issue is intermittent, probably to do with my later code, which I am no sure, hence ask for help.

BTW, have you tried to debug with J-Link, it seems much harder than using LinkServer, it takes long time to jump to main sometimes, and sometimes exit the debug mode without a reason and when suspect button is clicked, it takes ages to stop.

Anyway, if you don't know any obvious reason for this, then it is probably no solution, I will have to battle on with it, thanks for your help.

Regards!

Ping