Uri Chaplianka

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5 years, 9 months ago.

mbed-os-example-blinky not work with nRF52840-DK

I compiled this example on new nRF52840-DK that I received but led is not blinked. I opened settings of board : https://os.mbed.com/platforms/Nordic-nRF52-DK/ and see that it's not same board I received. /media/uploads/chaplinu/dk.jpg

How make it work ?

Question relating to:

Last updated: 30 Jun 2020
The nRF52 Development Kit is a single-board development kit for Bluetooth Smart, ANT and 2.4GHz proprietary applications using the nRF52 Series SoC. This kit supports both development for nRF52832 SoCs.

2 Answers

Dexter Fryar
5 years, 6 months ago.

Try building Blinky for the 52840 with 'mbed compile -t GCC_ARM -m NRF52840_DK'. Note the product page you pointed to above is for the NRF52_DK (NRF52832 or pca10040).

The NRF52840_DK page is [here[https://os.mbed.com/platforms/Nordic-nRF52840-DK]]

Jenny Plunkett
5 years, 9 months ago.

Hi Uri,

Please try updating the firmware of your board by following the instructions here: https://armmbed.github.io/DAPLink/?board=Nordic-nRF52-DK

Then once the update is complete, please let me know if you are able to run mbed-os-example-blinky successfully.

Thank you!

- Jenny, team Mbed

Hi Jenny, Sorry for the newbie question. Uri asked about the nRF52840-DK board, which isn't listed on the supported boards page (https://os.mbed.com/platforms/?tvend=11). You referred him to a page for updating firmware on the older nRF52-DK board. Am I missing something here ? Is the nRF52840-DK board actually supported despite not being listed ? Are the two boards similar enough that they share a firmware update page ? Thanks, John

posted by John Porter 12 Mar 2019