What software assets do I need to program a nrf52840 chip, still under experimental production?

[Mitch996]

Hello, I've obtained and assembled a board with nrf52840 as its centerpiece, I'm here to ask what I need to compile my program for this relatively new chip?

Here is a list I made, hoping that it will serve some future use:

• Keil μV5
• Software packs for Nrf52840
• S1x0 softdevice, any softdevice will do, no need to be specifically compiled and tailored for nrf52840.

These are the items I can list, I'm not sure I missed anything?

Also, a rather pressing issue: there doesn't seem to be any Software packs for Nrf52840? Although there appears to be software packs for nrf51822. Where can I find the ones made precisely for nrf52840?

[Sigurd]

Hi,

The nRF5 SDK (Software Development Kit) v13.0.0 provides support for the nRF52840 SoC.

You can download SDK v13.0.0 here.

In the compatibility matrix here, you can use see that you will need to use SoftDevice S140. You can find the SoftDevice in the folder: SDK13_Folder\components\softdevice\s140\hex

---

Support for nRF52840/PCA10056 was added in J-Link V6.12c.

Please download the latest J-Link version from Segger here.

[Mitch996]

Hello & thank you Sigurd, can I trouble you with another question? How do I download the softdevice? Since my custom board can't properly be recognized by nrf go studio.

[Sigurd]

Do you have a custom board with the nRF52840?

Anyways, you can use nrfjprog. Use the following command:

nrfjprog --family nrf52 --program s140_nrf52840_5.0.0-2.alpha_softdevice.hex

[Mitch996]

Yes! I'm among the first, the few and the proud in the world that had the chance to use this experimental chip! Anyway I got " The --family option given with the command (or the default from nrfjprog.ini) does not match the device connected. " error, I can download my user program into the chip using keil just fine. What to do next? Google doesn't seem to help. Both the command and the ini file, after being modified by me, are now nrf52 family.

[Sigurd]

Try to download and install the latest nRF5x-Command-Line-Tools(9.4.0). Support for nRF52840 was first added in version 9.2.0, so if you have an older version that would explain the issue.

You can check what version you have using the -v command like this:

nrfjprog -v