nRF52840-DK.rst

nRF52840 DK

Contents

• Overview
• Hardware
• Working with the Board
  • Building an Application
  • Flashing an Application

Overview

The nRF52840 DK is a low-cost single-board development kit that uses the nRF52840 multi-protocol SoC to develop Bluetooth® 5, Bluetooth mesh, Thread, Zigbee, ANT, IEEE 802.15.4, and 2.4 GHz proprietary applications. It also supports development on the nRF52811 SoC.

Hardware

• For detailed specifications, see nRF52840 DK product page on the nRF52840 DK website.
• For hardware schematics, see nRF52840 Development Kit.

Working with the Board

Building an Application

|main_project_name| Zephyr flavour is based on Zephyr kernel.

1. Source the environment with proper template settings, flavour being zephyr and target machine being nrf52840dk-nrf52840:

$ TEMPLATECONF=../oniro/flavours/zephyr . ./oe-core/oe-init-build-env build-oniro-zephyr

2. You will find yourself in the newly created build directory. Call bitbake to build the image. Example below shows how to build zephyr-philosophers.

$ MACHINE=nrf52840dk-nrf52840 bitbake zephyr-philosophers

You can set up MACHINE variable can be set up in conf/local.conf file under the build directory, or via the command line.

3. After the build completes, the image file can be found in build-oniro-zephyr/tmp-newlib/deploy/images/nrf52840dk-nrf52840/.

Flashing an Application

pyOCD is a required host tool used by the flashing mechanism described below:

• To install the latest stable version of pyOCD via pip as follows:

$ pip install --pre -U pyOCD

Note

When ValueError: The device has no langid error is displayed due to lack of permission, perform the instructions to resolve.

• To flash the image, execute the command used to build the image with -c flash_usb appended. For example, to flash the already built zephyr-philosophers image, execute:

$ MACHINE=nrf52840dk-nrf52840 bitbake zephyr-philosophers -c flash_usb