Programming nRF52840 custom board chip

RE: Programming nRF52840 custom board chip

Nguyen Hoan Hoang — Mon, 06 Apr 2020 20:40:53 GMT

www.nordicsemi.com/.../nRF-Pynrfjprog

RE: Programming nRF52840 custom board chip

MRK-196 — Mon, 06 Apr 2020 19:57:18 GMT

Is there any documentation you can refer me to flash with nrfjprog ?

RE: Programming nRF52840 custom board chip

Nguyen Hoan Hoang — Mon, 06 Apr 2020 13:11:35 GMT

I suggest that you use nrfjprog to try to flash some example or the softdevice itself first. If this doesn't work most likely your board is the issue.

RE: Programming nRF52840 custom board chip

MRK-196 — Mon, 06 Apr 2020 12:46:50 GMT

Hi Simon, yes the diagram you posted has the same connections I used to program the custom board. But I still did not manage to program the custom board.

RE: Programming nRF52840 custom board chip

Simonr — Mon, 06 Apr 2020 07:29:07 GMT

Can you show us how you have connected your device to the DK with a picture? An external board should be connected to a DK like shown in the picture below in order to flash applications to it.

Best regards,

Simon

RE: Programming nRF52840 custom board chip

awneil — Fri, 03 Apr 2020 15:59:38 GMT

[quote userid="81703" url="~/f/nordic-q-a/59858/programming-nrf52840-custom-board-chip/243440"]you only (sic) need to connect the pins [/quote]

Well, I guess that summarises the whole of hardware design!

😃

Of course, you need to have all the correct pins, and all in the correct order, and your power supply needs to be good, and the assembly has to be good, and all the other things required for the chip to work at all ...

RE: Programming nRF52840 custom board chip

MRK-196 — Fri, 03 Apr 2020 15:34:18 GMT

Thanks for the fast reply, I will re-check my hardware. So to program a new chip you only need to connect the pins to the P20 or P19 and it should work simple as that. (plug and play procedure) ?

RE: Programming nRF52840 custom board chip

awneil — Fri, 03 Apr 2020 15:24:24 GMT

This probably just means that your J-Link cannot connect to the target - probably a hardware issue.

Segger have a page on how to debug J-Link hardware connection issues:

https://wiki.segger.com/J-Link_cannot_connect_to_the_CPU