QUERY · ISSUE

Pinout for the nrf52840 USB dongle

openby JPFrancoiaopened 2020-09-29updated 2025-10-03

port-nrf

Hello,

I'm trying to understand how the pins of the nrf52840 are mapped/numbered in the board definition.

Looking at the pins.csv file, I see pins going as high as P47:

https://github.com/micropython/micropython/blob/0fd0eb00aa5b9d311046d48d73a8cfabb30d7dd6/ports/nrf/boards/pca10059/pins.csv#L28

But there isn't such a pin on the board. Here is the pinout of the board (from the doc):

screen-2020-09-29-22-41-39

I wasn't able to find out what numbering scheme was used to number the pins. It makes it hard to know to which physical pin a pin Pin object is tied (in Micropython).

Could someone help me on this please? Maybe I'm missing something. @glennrub maybe (I think you built the file)?

CANDIDATE · ISSUE

[nrf] Add board support for nRF52840 dongle (pca10059)

closedby uhrheberopened 2018-10-11updated 2019-10-10

port-nrf

Please add support for the nRF52840 dongle pca10059.
Documentation here: https://www.nordicsemi.com/eng/Products/nRF52840-Dongle

I'm willing to do it, but I'm new to Micropython, so I don't have all the information I need.
Is there already an implementation that has Repl over native USB?
That would be the biggest change.
Changing the pin assignments from pca10056 shouldn't be too complicated.

Assessment

Q Qwen · high

Issue #6497 is a question about understanding the pin numbering scheme in the pca10059 board definition (specifically why pins.csv lists pins up to P47 when the physical board has fewer pins). Issue #4231 is a feature request to add board support for the nRF52840 dongle (pca10059), which was the original request that led to the creation of the pca10059 board support. While both issues are about the same board (pca10059/nRF52840 dongle), #4231 is about implementing the board support itself, whereas #6497 is about understanding the pin mapping after the support was already implemented. The candidate does not resolve the query about pin numbering clarification.

Suggested action

Keep both issues open. #6497 needs a response explaining the pin numbering scheme (likely that it includes all available GPIOs on the nRF52840 chip, not just those exposed on the board). #4231 may already be resolved if the board support was implemented.

Pinout for the nrf52840 USB dongle

[nrf] Add board support for nRF52840 dongle (pca10059)

Keyboard