nRF5340 Serial Wire Debug Recommendations

[alwalker]

Hello,

For custom board designs, as the Segger JLink is no longer supported, what is the recommended solution for doing code development, debug, erasing and programming via the Serial Wire Debug interface (either 10 or 20 pin headers)? 

Alternatively, can all this be done via USB?

Kind regards,

Al

[Håkon Alseth]

Hi,

 

For custom board designs, as the Segger JLink is no longer supported

For programming Cortex M33 cores (which is the cpu core on both nRF53 and nRF91), a newer debugger is required, as the nRF52-series on-board debuggers do not support programming Cortex M23/M33 devices.

Segger has dedicated debuggers and programmers for programming of nRF5-series devices (and nRF91-series) available for purchase:

https://www.segger.com/products/debug-probes/j-link/models/j-link-base/

  

Kind regards,

Håkon

[alwalker]

Hi Hakon,

Thanks very much, how do these newer Segger devices integrate with nRF Connect SDK for code development and debug please?

Kind regards,

Al

[Håkon Alseth]

Hi,

 

nrfjprog, which is called by west and vscode, supports segger based debuggers.

For development purposes, you can also use a nRF5340-DK to program a external board, provided that your external board is 3.0V powered:

https://infocenter.nordicsemi.com/topic/ug_nrf5340_dk/UG/dk/hw_debug_out.html?cp=3_0_4_3_9

 

Kind regards,

Håkon

[alwalker]

Hi Hakon,

That I can use the nRF5340-DK boards I have is very good news for development, and the Segger solutions will be useful for mass production.

Kind regards,

Al