Updating from SDK15.3 to SDK16.0, now it gets stuck in random interrupt handlers

RE: Updating from SDK15.3 to SDK16.0, now it gets stuck in random interrupt handlers

Ryjan — Fri, 24 Apr 2020 14:32:22 GMT

That was the problem. I changed this code:

#define xPortSysTickHandler     RTC1_IRQHandler

In FreeRTOSConfig.h to:

 #define xPortSysTickHandler     RTC2_IRQHandler

I do not understand how this was leading to dummy interrupt being called, unless the mismatch somehow caused the interrupt handlers to be offset and wrong interrupt handlers were being called by this offset in the vector table.

RE: Updating from SDK15.3 to SDK16.0, now it gets stuck in random interrupt handlers

Susheel Nuguru — Fri, 24 Apr 2020 13:02:21 GMT

The issue is that your code is stuck in the dummy interrupt handler, which is executed for non implemented ISR but yet generated by the system.

In your project you have changed

portmacro_cmsis.h -> #define portNRF_RTC_IRQn RTC2_IRQn

But in FreeRTOSConfig.h file you have #define xPortSysTickHandler RTC1_IRQHandler

Both should point to the same RTC instance. Changing the xPortSysTickHandler to RTC2 fixes your problem.

RE: Updating from SDK15.3 to SDK16.0, now it gets stuck in random interrupt handlers

Ryjan — Wed, 22 Apr 2020 15:07:48 GMT

This zip file contains the whole project. It should run in Segger Embedded Studio. Upon compiling and running in debug mode, the terminal will come up but before the first log will be stuck in an interrupt. Pressing pause and looking at the call stack will show the interrupt handler.

**zip file deleted**

RE: Updating from SDK15.3 to SDK16.0, now it gets stuck in random interrupt handlers

Susheel Nuguru — Wed, 22 Apr 2020 06:43:59 GMT

Ryjan, this case is now private. you can upload you code now

RE: Updating from SDK15.3 to SDK16.0, now it gets stuck in random interrupt handlers

Ryjan — Tue, 21 Apr 2020 20:51:25 GMT

I've been working with this most of the morning here. The QDEC is not enabled. We had to make some modifications to the port_cmsis_systick.c file that are the same as the thread liked above. That was good to catch since that would come back to cause issues, however the same issue still remains. I can upload my code privately for you to have a look at. Would I need the start a different private case or can that be done privately through this thread?

RE: Updating from SDK15.3 to SDK16.0, now it gets stuck in random interrupt handlers

Susheel Nuguru — Tue, 21 Apr 2020 06:29:38 GMT

Hi Ryjan,

Probably you are using FPU instructions causing an FPU exception? If that is the case, then you need to implement an FPU_IRQHandler as described in this thread.

It also looks like you have enabled the QDEC interrupt, and I do not think that the SDK has implemented any default QDEC_IRQHandler, which is why you seems to be going into the Dummy_handler and getting stuck there. I am not sure why this behaves different in two SDKs.

Can you please check if this is the case. If this does not help you, can you please upload your project, so that I can debug it for you.

RE: Updating from SDK15.3 to SDK16.0, now it gets stuck in random interrupt handlers

Ryjan — Fri, 17 Apr 2020 15:12:23 GMT

Here's a call stack screen shot of one time I paused the application after seeing that it was stuck.