External programming Using nRF52-DK

RE: External programming Using nRF52-DK

ArvidBlaser — Thu, 26 Jan 2023 13:12:15 GMT

Thank you, you were right. I was so sure i connected everything correctly, however I made a mistake on the silkscreen switching the pins..

BR Arvid

RE: External programming Using nRF52-DK

Muhammad Usman — Thu, 26 Jan 2023 09:23:29 GMT

yes, the issue is solved, and the connections are the same as mentioned at the top. This usually occurs due to wrong connections. In my case, the custom board was not correctly soldered. When I tried with another custom board it worked for me.

RE: External programming Using nRF52-DK

Mike Austin (LPI) — Thu, 26 Jan 2023 09:20:01 GMT

I get that error sometimes when I forget to reconnecto the DK to my custom board correctly (or forget to connect it at all!)

It also pops up sometimes seemingly randomly. I can usually get it to go away by disconnecting the DK from my PC, restarting VSC, then reconnecting the DK to my PC.

If you are getting it all the time, then I suspect the connections from the DK to your custom board aren't correct.

Cheers,

Mike

RE: External programming Using nRF52-DK

ArvidBlaser — Thu, 26 Jan 2023 09:15:46 GMT

Did you solve it? I think I'm having the same problems?

RE: External programming Using nRF52-DK

Muhammad Usman — Fri, 22 Jul 2022 16:13:51 GMT

Hi All!

I tried the above connections with nrf52833DK and custom nrf52820 board. But I get the following error.

Can you please help me in this regard!

Thanks in advance!

RE: External programming Using nRF52-DK

Hueber9500 — Thu, 02 Apr 2020 15:11:43 GMT

Remi can you tell, how to check if the external board is programmed correctly. Because I am using this wiring setup, and compilation and flashing is working, but when I think only the dev board is being flashed. Also can you give example how to power the external board from the nrf52840 dev board. Thanks in advance

RE: External programming Using nRF52-DK

SL06 — Mon, 11 Nov 2019 21:06:33 GMT

The schematic provide by Remi without GND DETECT work fine,Thanks.

I am using a switch to power VTG from Vdd. When VTG is disconnect, I can program the nrf52 main board. When VTG is connect, I can program the external board. This is very useful when programming a transmitter / receiver application.

RE: External programming Using nRF52-DK

sid — Mon, 20 Aug 2018 13:16:51 GMT

Hi,

Can I use this setup to program nrf51822

RE: External programming Using nRF52-DK

acha — Tue, 10 Jan 2017 16:50:22 GMT

GND DETECT is not necessary.

RE: External programming Using nRF52-DK

Remi — Sun, 09 Oct 2016 11:47:09 GMT

I believe the issue OP may of been having was that he's using pin 1 instead of pin 2 for VDD. This is my current setup and it's working well for programming an UNPOWERED external board.

nRF52-DK           Custom / External Board


VDD ------+-------------> VDD
         /
VTG ----+

GND ------------+-------> GND
               /
GND DETECT ---+

SWD IO -----------------> SWD IO

SWD CLK ----------------> SWD CLK

RE: External programming Using nRF52-DK

Petter Myhre — Mon, 03 Oct 2016 10:59:58 GMT

@Remi Isn't this explained in "More info here" in Wojtek's answer?

RE: External programming Using nRF52-DK

Remi — Sun, 02 Oct 2016 17:46:13 GMT

This question is still outstanding. Can someone please answer. From what I gather it should be possible using the P20 pins. Can someone please please please provide a wiring diagram for connecting P20 to SWIO, SWDLK, VDD & GND on an external board. Also explain what we are supposed to do when our external boards are powered by a 3V battery. Do we take the battery out and power it from nRF52-DK?? Asking simply because I don't have the correct connector for P19 :)

RE: External programming Using nRF52-DK

Wojtek — Tue, 24 May 2016 11:45:57 GMT

It is possible. I am using P19 on nRF52-DK, and i just connect 4 lines from it: VCC(pin1), SWDIO(pin2), GND(pin3), SWDCLK(pin4 and wire them to corresponding pins on nRF51 chip. I am programming/debugging without problems that way.

External (nRF51) chip has to be powered to be detected by programmer that way (if not, nRF52-DK onboard nrf52832 will be detected only).

More info here