nRF52832 module can't connect j-link anymore after flashing zephyr program onto it

[John Smith]

Hi I flashed my nrf52dk with a zephyr program and everything works great. I then flashed that same build onto my nrf52832 module assuming that the nrf52_pca10040 build would be ok to flash on there since it's the same chip (nrf52832). Unfortunately, I can't seem to connect with j-link anymore with the module let alone flash it again. Is it possible that I corrupted the module? If so, how do I uncorrupt?

Thanks

[Simon]

What nrf52832 module do you have?

Best regards,

Simon

[nerdybee]

Hi Simon,

I apologize for commenting on an old post, but I'm encountering the same exact issue as the poster with the Fanstel BC832. My modules seem to not be detected by the JLINK debugger anymore, and they are not recoverable... 

This has never been an issue until I started using Zephyr rather than PlatformIO. Also, I've been successful in flashing some of my modules with my Zephyr project, but after flashing a few times, they randomly seem to be lost and unable to be recovered.

Do you know if there's anything I can do?

[ovrebekk]

Hi 

Rather than resurrecting an old ticket it is recommended to open a new one, and add a link to the old case for context. 

Could you open a new ticket and provide a bit more information about your setup? 

For instance, it would be interesting to know the following: 

1) Which JLINK debugger are you using? 

2) Which Zephyr or nRF Connect SDK version are you using?

3) Which sample are you trying to build, and which board are you building for? 

A potential problem when using this module if you are building for the nrf52dk_nrf52832 board is that this board enables DCDC, while the BC832 module does not include the necessary components for the DCDC regulator to work. 

Best regards
Torbjørn