nrfjprog --ids not finding board

RE: nrfjprog --ids not finding board

bluetooth_mdw — Tue, 25 Jun 2019 07:30:36 GMT

All good. If I'd got half a working brain this morning, I'd have known to do that anyway :-)

RE: nrfjprog --ids not finding board

Jørgen Holmefjord — Tue, 25 Jun 2019 07:29:30 GMT

Great that you got it working again!

I forgot to mention that you need to power cycle the board after updating the FW, to continue normal operation :-)

RE: nrfjprog --ids not finding board

bluetooth_mdw — Tue, 25 Jun 2019 07:26:12 GMT

Hi Jorgen.... anything's possible! Although I don't remember doing that. Anyway, I flashed J-Link OB-SAM3U128-V2-NordicSemi 170724.bin to the board just now but unfortunately nrfjprog -i still does not list the board. pyocd list now says "No available debug probes are connected".

However! I unplugged from USB, connected again and... now nrfjprog -i works :-)

Thanks for your help

Martin

RE: nrfjprog --ids not finding board

Jørgen Holmefjord — Tue, 25 Jun 2019 06:37:03 GMT

Hello!

Is it possible that you flashed the interface MCU chip on the DK with a DAPLink FW? I tested PyOCD on one of my DK, and it did not list any devices (while nrfjprog did). After flashing this firmware, the nRF52840 DK is listed in PyOCD, but not by nrfjprog.

You can find the default J-Link OB Interface MCU firmware on nRF52840 DK download page. Hold "IF BOOT/RESET" while powering the board, and drag the downloaded BIN file to removable drive named "BOOTLOADER", to flash the firmware.

Best regards,
Jørgen