debug app with softdevice

[Stas]

I try debug my app in keil debugger but it's often raised app: SOFTDEVICE: ASSERTION FAILED in SEGGER after step down through the code (in few steps). My app based on buttonless_dfu app from SDK14.2 nrf52832 I read here

That the debugging device with preinstalled softdevice can cause such issues. If so could you explain me how to correct debug my app. here is screen of errors (other problem can't read file's name in call stack window)

[shibshab]

You can not do step by step debugging while having the SoftDevice active. This is due to the way the SoftDevice is implemented.

What you need to do is to insert a breakpoint where you want to check stuff, and then run up to that point.

[ocram]

It's possible with some restrictions. The solution described here worked for me:

https://devzone.nordicsemi.com/f/nordic-q-a/9622/application-debug-with-softdevice/35565#35565

A more sophisticated solution is the monitore mode intended to let the softdevice run while debuggin lower priority application code, see:

https://github.com/NordicPlayground/j-link-monitoring-mode-debugging/#monitor-mode-debugging-in-keil-%C2%B5vision5-and-segger-embedded-studio

and

https://devzone.nordicsemi.com/b/blog/posts/segger-embedded-studio-part-2-monitor-mode-debuggi