debugging BLE uart causes reset when breakpoint set in SDK

RE: debugging BLE uart causes reset when breakpoint set in SDK

haakonsh — Fri, 26 Jul 2019 13:10:02 GMT

Yes, but:

[quote user="awneil"][/quote]

Note that you require at least a J-Link Plus for Monitor Mode Debug:

https://www.segger.com/products/debug-probes/j-link/technology/monitor-mode-debugging/ - see the FAQs

(but the on-board J-Link on the nRF52 DKs gives you an evaluation licence for it)

RE: debugging BLE uart causes reset when breakpoint set in SDK

Craig — Sat, 20 Jul 2019 00:24:01 GMT

OK I am using the nrf52-DK right now will it work on that??? I am making a custom board but wont have for a few weeks

RE: debugging BLE uart causes reset when breakpoint set in SDK

awneil — Fri, 19 Jul 2019 08:53:22 GMT

[quote userid="18054" url="~/f/nordic-q-a/49990/debugging-ble-uart-causes-reset-when-breakpoint-set-in-sdk/199373"]nrf52 S112 chip[/quote]

"S112" is the SoftDevice - it has nothing to do with the SoftDevice.

[quote userid="18054" url="~/f/nordic-q-a/49990/debugging-ble-uart-causes-reset-when-breakpoint-set-in-sdk/199373"]I may be doing a project based on that[/quote]

Note that you require at least a J-Link Plus for Monitor Mode Debug:

https://www.segger.com/products/debug-probes/j-link/technology/monitor-mode-debugging/ - see the FAQs

(but the on-board J-Link on the nRF52 DKs gives you an evaluation licence for it)

RE: debugging BLE uart causes reset when breakpoint set in SDK

awneil — Fri, 19 Jul 2019 08:48:07 GMT

[quote userid="13562" url="~/f/nordic-q-a/49990/debugging-ble-uart-causes-reset-when-breakpoint-set-in-sdk/199436"]it's a debugging feature made by ARM or Segger[/quote]

It relies upon standard features of the ARM Cortex-M architecture but, AFAIK, Segger is the only one to have an implementation that uses it:

https://community.arm.com/developer/tools-software/tools/f/keil-forum/35230/is-monitor-mode-debug-mmd-supported-with-ulink

https://community.st.com/s/question/0D50X00009nNQQnSAO/monitor-mode-debug-mmd-

[quote userid="13562" url="~/f/nordic-q-a/49990/debugging-ble-uart-causes-reset-when-breakpoint-set-in-sdk/199436"] will work on any Cortex-M series CPU[/quote]

Not on Cortex-M0 - so not on nRF51

RE: debugging BLE uart causes reset when breakpoint set in SDK

haakonsh — Fri, 19 Jul 2019 07:54:00 GMT

Yeah, it's a debugging feature made by ARM or Segger and it will work on any Cortex-M series CPU.

RE: debugging BLE uart causes reset when breakpoint set in SDK

Craig — Thu, 18 Jul 2019 22:55:34 GMT

Can you do this with nrf52 S112 chip? I may be doing a project based on that as well but still up in the air....

This is great thanks so much!! I will try it within a few days.....

RE: debugging BLE uart causes reset when breakpoint set in SDK

haakonsh — Thu, 18 Jul 2019 14:09:09 GMT

The SoftDevice will hardfault if you halt the CPU, the hardfault handler will reset the MCU.

I suggest you try Monitor Mode Debugging: https://github.com/NordicPlayground/j-link-monitoring-mode-debugging.