Converting nRF52840-DK to BLE sniffer

RE: Converting nRF52840-DK to BLE sniffer

Jared — Mon, 06 Feb 2023 11:01:41 GMT

Hi,

The log indicates that we're not able to get in contact with the onboard debugger. Have you modified the board in any way, such as soldering or cutting any solder bridges or configured any switches?

Could you share a picture of your development kit that shows how the switches are configured?

Also please go through the steps outlined in this list.

regards

Jared

RE: Converting nRF52840-DK to BLE sniffer

Apica — Fri, 03 Feb 2023 13:07:03 GMT

I use the west flash command from vscode (task) and it works properly without using the bootloader mode. Also, Segger tools properly detect the device.

RE: Converting nRF52840-DK to BLE sniffer

Jared — Fri, 03 Feb 2023 12:53:07 GMT

Hi,

Seems like you have an issue with nRF Command line Tools.

What are you using to flash it after building the project? Are you using VS Code to flash it? Or do you always set the board in bootloader mode and then drag the hex file over to the folder after building the project?

regards

Jared

RE: Converting nRF52840-DK to BLE sniffer

Apica — Fri, 03 Feb 2023 10:33:29 GMT

It failed with the following code:

[error] [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".
[error] [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".
...
[error] [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".
ERROR: JLinkARM DLL reported an error. Try again. If error condition
ERROR: persists, run the same command again with argument --log, contact Nordic
ERROR: Semiconductor and provide the generated log.log file to them.

Adding the --log file I ended with the following file:

devzone.nordicsemi.com/.../1376.log.log

I usually flash using Zehyr build, and I checked that is still working.

RE: Converting nRF52840-DK to BLE sniffer

Jared — Fri, 03 Feb 2023 10:05:14 GMT

Hi,

Are you able to flash examples using nRF Command Line Tools?

For example, if you're using nRF5 SDK you could flash the blinky example with:

nrfjprog --program blinky_pca10056.hex --chiperase --verify

You find the hex in the nRF5SDK at:

SDK_ROOT\examples\peripheral\blinky\hex

regards

Jared

RE: Converting nRF52840-DK to BLE sniffer

Apica — Fri, 03 Feb 2023 10:01:04 GMT

It's PCA10056 2.0.1 2020.25
I've been able to flash other firmware using If BOOT/RESET button (J-Link OB-SAM3U128-V2-NordicSemi 170724.bin) but I usually use the board to flash external boards.
No, I just plugged external wires to flash SWD devices, but now they are removed.

RE: Converting nRF52840-DK to BLE sniffer

Jared — Fri, 03 Feb 2023 09:55:59 GMT

Hi there,

Some questions:

Which revision of the nRF52840 DK are you using? It should be printed on a sticker on your development kit.
Are you able to flash the development kit with any other fw such as the examples in our SDK?
Have you done any modifications on the development kit such as soldering or cutting the onboard solder bridges?

regards

Jared