Programming external nRF52832 board via nRF52 DK without powering external device

RE: Programming external nRF52832 board via nRF52 DK without powering external device

Tim — Wed, 04 Mar 2020 15:33:34 GMT

Thanks Ketiljo!

Tim

RE: Programming external nRF52832 board via nRF52 DK without powering external device

ketiljo — Wed, 04 Mar 2020 13:55:24 GMT

Correct!

RE: Programming external nRF52832 board via nRF52 DK without powering external device

Tim — Tue, 03 Mar 2020 05:28:05 GMT

Hi Ketiljo. Sorry for my slow thank-you and follow-up. If I understand correctly, I can power the external board from VDD of connector P1 on the Dev Kit. When you say "This voltage must also be fed into P19, pin 1." do you mean P19 (first pin) of connector P4 on the Dev Kit? If yes, then I:

- connect debug out port P19 of Dev Kit to external board according to schematic you highlight

- connect VDD of connector P1 on Dev Kit to power external board

- connect VDD of connector P1 to P19 of connector P4 on Dev Kit

Correct?
Many thanks,

Tim

RE: Programming external nRF52832 board via nRF52 DK without powering external device

ketiljo — Wed, 12 Feb 2020 07:56:52 GMT

Hi Tim

The DK will think it's always an external voltage present, so you can't program the onboard nRF.

Another way to use VDD from the edge connector to power the external board. This voltage must also be fed into P19, pin 1.

RE: Programming external nRF52832 board via nRF52 DK without powering external device

Tim — Tue, 11 Feb 2020 15:29:25 GMT

Thanks Ketiljo. Does closing SB32 mean that the onboard nRF52832 can no longer be programmed? How does DK detect external board and, in turn, program it rather than the onboard chip?

Thank you,

Tim

RE: Programming external nRF52832 board via nRF52 DK without powering external device

ketiljo — Tue, 11 Feb 2020 13:30:11 GMT

If you close SB32, you will connect the nRF52-DK power supply to the external board: