Cannot download to nrf52dk_nrf52805

[CRNorris]

I've just got started with nRF Connect and used the desktop app to install SES and the SDK v1.5.0.

I am trying to evaluate NRF52805 using an nRF52-DK board, so I selected the board name "nrf52dk_nrf52805" when setting up a sample app to build.

All of the samples I've tried build fine, but I can't download them to the board because I get:

Downloading 'zephyr.elf' to JLink

Download failed

...

Failed to write memory.

If I build for "nrf52dk_nrf52832" instead it seems to download to the board work fine, although that's not the device I am trying to evaluate right now.

Any ideas? I am assuming that nRF52-DK can emulate the NRF52805 based on what I have read.

Thanks!

[CRNorris]

I set Target Device to nRF52805_xxAA in the solution options under "Debugger" and that seems to have solved it. Looks like there's a bug where it doesn't get set correctly for this target when the project is created.

[Øyvind]

Hello, yes, you should be able to emulate nRF52805 on the nRF52 DK:

The nrf52dk_nrf52805 board is a modified version of the :ref:`nrf52dk_nrf52832`
that enforces the limitations imposed by the nRF52805 IC, which is a
cost-reduced variant of the original nRF52832. Since Nordic does not offer a
development kit for the nRF52805, you can use this board to develop for this
IC while using the nRF52 Development Kit (PCA10040).

What sample are you trying to build?

[CRNorris]

I tried Blinky, Hello World and some others. Every sample I tried had the same issue and I had to do the workaround I described above before it would download.

[Øyvind]

I confirm the issue using SES v5.34. West (command line) works as intended. Will report to our team.