SystemView not working when bluetooth is enabled

[Narendra]

Hi,

I like to analyze my custom BLE firmware thread activity, event, and timing using the Segger SystemView application. I have added the following configuration in prj.conf file.

CONFIG_STDOUT_CONSOLE=y
# enable to use thread names
CONFIG_THREAD_NAME=y
CONFIG_SEGGER_SYSTEMVIEW=y
CONFIG_USE_SEGGER_RTT=y
CONFIG_TRACING=y
# enable for post-mortem tracing
CONFIG_SEGGER_SYSVIEW_POST_MORTEM_MODE=n

I get this configuration from the documentation. https://docs.nordicsemi.com/bundle/ncs-2.9.0/page/zephyr/services/tracing/index.html#segger_systemview_support

Programming/flasing the device with the above config, the device is not advertising. There is no activity in SystemView software. On debug I found that device is stuck in bt_enable function.

To verify the above case, I have added the same config in peripheral_lbs example and run in nrf52840DK (without any other changes). I am facing the same issue. No BLE advertisement and no LED blinking (which toggle in the main while loop of example). On debug I found it stuck at the same place, in bt_enable function.

When I bypass (remove BLE part from peripherl_lbs example), I can see the LED blinking and activity in Segger SystemView tool.

I am using nRF52840DK for both my custom BLE application and to run the example. I am using nRF Connect SDK v2.9.0.

Is there any other configuration required to add or change? Kindly help me to fix this issue.

Thanks,

Narendra.

[Kazi Afroza Sultana]

Hello,

I think the latest version of NCS may not compatible with the Segger system view you are using. 

'Recent versions of SEGGER SystemView come with an API translation table for Zephyr which is incomplete and does not match the current level of support available in Zephyr.''

Can you try to use the one or two steps downgrade version of Segger System view app and see if it works?

Thanks.

BR

Kazi

[Narendra]

Hi,

I have checked in Segger System view app versions 3.50, 3.52, 3.54, and 3.56. But in all of them not working.

As I said, it only works when I remove the bt_enable function. 

Br,

Narendra

[Kazi Afroza Sultana]

Hello Narendra,

It's possible that you are running into this issue: https://github.com/nrfconnect/sdk-nrf/blob/main/doc/nrf/releases_and_maturity/known_issues.rst?plain=1#L194-L198

 There's a commit fixing it upstream which they can cherry-pick.

Could you please try this? 

[Narendra]

Hi Afroza, 

Thank you for drawing attention to this. 

I have applied the commit with the fix in NCS v2.9.0, solving the issue. Now my application is working with SystemView v3.58 (latest). 

Thanks again.

Narendra. 

[Sinan Tuzun]

Hi Narendra. Could you please share the solution of your problem. I tried the same things in the commit but not worked for me.