nrf52840 dongle programming with SEGGER.

[mcls]

Hi, I bougth 2 nrf52840 dongle but I dont't know how to use it or program them. So I tried to learn about it looking the getting started guide, this beginners tutorial and stuff like that.

I work on Win10, SEGGER Embedded Studio for ARM V3.50(64bit).

Now I have a problem that I cannot solve. The problem Is that I want to try to compile and run any example (now the blinky_pca10059_mbr) in the SDK 15.0 for the PCA10059 (nrf52840 dongle) to program the dongle and learn about it, but, when I compile and run the example SEGGER J-Link appear and ask me "Emulator selector - No emulators connected via USB"

The dongle is connected via USB and with his red led flashing.

Executing the J-Link with the System command line shows the same result. Did I miss something? Should I do something before build and run an example? Which is the correct order to program the dongle?

(I already install python and nrfutil to mess with the public key problem)

Thanks a lot and sorry if i made some random language mistake while i was explaining myself.

[Sigurd]

Hi,

The nRF52840 Dongle can be programmed through the built-in USB bootloader. It does not have a SEGGER J-Link OB Debugger. That means that you can program it using either nrfutil OR nRF Connect for Desktop’s dedicated Programmer programming app. I would recommend the programming app.

See this page for more information.

Here is a link where you can download nRF Connect for Desktop.

[mcls]

But this way I cannot debug my program unless I use nrfutil

[mcls]

Every thing I do trying to proggram the device without the application seems useless without something else. Like this:

And looking for an asnwer everybody said that I need J-Flash or J-Link, and again, my device cannot be detected. I do not what to do

[Sigurd]

mcls said:

But this way I cannot debug my program unless I use nrfutil

Since the dongle don't have a debugger, you can only flash firmware to the dongle with the USB bootloader that is on the dongle.  If you want to debug, you should get the nRF52840-DK.

[Allen Pan]

If I program the dongle with the sniffer firmware, and the bootloader was lost. Can I program it back to BLE dongle?