CODEWITHSUNDEEP
platformionrf52
wz2b
wz2b

Reputation: 1025

Programming NRF52840 dongle from PlatformIO

I am following https://docs.platformio.org/en/latest/boards/nordicnrf52/nrf52840_dk.html but I don't actually have a DK, I have an NRF52840 "Dongle". Does anybody know if it's possible for that to work directly with PlatformIO? It has a built in bootloader, but I don't think it emulates the right kind of programmer. I have nrfutil installed but that wants a package (.zip) and platformio is producing .elf/.hex ... not sure how to connect these tools.

Upvotes: 0

Views: 1403

Answers (2)

fredlak
fredlak

Reputation: 11

platformio.ini configuration:

[env:nrf52840_dongle]
platform = nordicnrf52
board = nrf52840_dk
framework = zephyr
board_build.zephyr.variant = nrf52840dongle_nrf52840
extra_scripts = dfu_upload.py
upload_protocol = custom

add to project root dfu_upload.py script:

import sys
import os
from os.path import basename
Import("env")

platform = env.PioPlatform()

def dfu_upload(source, target, env):
    firmware_path = str(source[0])
    firmware_name = basename(firmware_path)


    genpkg = "".join(["nrfutil pkg generate --hw-version 52 --sd-req=0x00 --application ", firmware_path, " --application-version 1 firmware.zip"])
    dfupkg = "nrfutil dfu serial -pkg firmware.zip -p COM14 -b 115200"
    print( genpkg )
    os.system( genpkg )
    os.system( dfupkg )

    print("Uploading done.")


# Custom upload command and program name
env.Replace(PROGNAME="firmware", UPLOADCMD=dfu_upload)
  • add nrfutil location to your system configuration "path" variable
  • before upload firmware switch dongle to dfu mode (button reset)
  • setup dongle COM number in line: dfupkg = "nrfutil dfu serial -pkg firmware.zip -p COM14 -b 115200" in dfu_upload.py

lots of examples you can find here: Zephyr github

Upvotes: 1

mckeed
mckeed

Reputation: 9828

You can use nrfutil pkg generate to convert the hex files into a package:

https://infocenter.nordicsemi.com/topic/ug_nrfutil/UG/nrfutil/nrfutil_pkg.html

FYI, you might not get much benefit from using PlatformIO since you don't have a debugging interface. Depending on the framework you're using, there might be other options, like this documentation for Zephyr:

https://docs.zephyrproject.org/latest/boards/arm/nrf52840dongle_nrf52840/doc/index.html

Upvotes: 0

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