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 · PULL REQUEST

ports/nrf: Add Particle Xenon board (NRF52840)

closedby jimmoopened 2019-08-23updated 2019-09-05

This was the most readily available NRF52840 board I could find for BLE testing.

A few of other minor fixes for the NRF port included:

add support for deploying with the Black Magic Probe, which is well suited for the Xenon as it has the exact same 0.05" pitch 10-pin SWD connector
make make deploy target (consistent with other ports)
fix pin mapping generated by make-pins.py

Assessment

Q Qwen · medium

The query asks for clarification on the pin numbering scheme for the nRF52840 USB dongle (PCA10059), specifically why pins.csv lists pins up to P47 when the physical board has fewer pins. The candidate PR (#5041) adds support for a different NRF52840 board (Particle Xenon) and mentions 'fix pin mapping generated by make-pins.py' to use board-specific indices. While the PR addresses the underlying mechanism of how pin mappings are generated in the nRF port, it does not directly answer the user's question about the PCA10059 board's specific pinout or numbering scheme. The PR is related to the same component (nRF port pin mapping) but does not resolve the specific confusion about the PCA10059 board.

Suggested action

Keep the issue open. The PR provides context on how pin mapping works in the nRF port but does not directly answer the user's question about the PCA10059 pinout. A maintainer should either close the issue with an explanation of the PCA10059 pin numbering or link to documentation that clarifies the mapping.

Pinout for the nrf52840 USB dongle

ports/nrf: Add Particle Xenon board (NRF52840)

Keyboard