Nordic nRF52840-DK

Hardware

Platform Nordic nRF52: The nRF52 Series are built for speed to carry out increasingly complex tasks in the shortest possible time and return to sleep, conserving precious battery power. They have a Cortex-M4F processor and are the most capable Bluetooth Smart SoCs on the market.

Microcontroller NRF52840
Frequency 64MHz
Flash 1MB
RAM 256KB
Vendor Nordic

Configuration

Please use nrf52840_dk ID for board option in “platformio.ini” (Project Configuration File):

[env:nrf52840_dk]
platform = nordicnrf52
board = nrf52840_dk

You can override default Nordic nRF52840-DK settings per build environment using board_*** option, where *** is a JSON object path from board manifest nrf52840_dk.json. For example, board_build.mcu, board_build.f_cpu, etc.

[env:nrf52840_dk]
platform = nordicnrf52
board = nrf52840_dk

; change microcontroller
board_build.mcu = nrf52840

; change MCU frequency
board_build.f_cpu = 64000000L

Uploading

Nordic nRF52840-DK supports the next uploading protocols:

  • blackmagic
  • cmsis-dap
  • jlink
  • mbed
  • nrfjprog
  • stlink

Default protocol is jlink

You can change upload protocol using upload_protocol option:

[env:nrf52840_dk]
platform = nordicnrf52
board = nrf52840_dk

upload_protocol = jlink

Debugging

Debugging - “1-click” solution for debugging with a zero configuration.

Warning

You will need to install debug tool drivers depending on your system. Please click on compatible debug tool below for the further instructions and configuration information.

You can switch between debugging Tools & Debug Probes using debug_tool option in “platformio.ini” (Project Configuration File).

Nordic nRF52840-DK has on-board debug probe and IS READY for debugging. You don’t need to use/buy external debug probe.

Compatible Tools On-board Default
Black Magic Probe    
CMSIS-DAP Yes  
J-LINK Yes Yes
ST-LINK    

Frameworks

Name Description
Arduino Arduino Wiring-based Framework allows writing cross-platform software to control devices attached to a wide range of Arduino boards to create all kinds of creative coding, interactive objects, spaces or physical experiences
Mbed Arm Mbed OS is an open source embedded operating system designed specifically for the ‘things’ in the Internet of Things. It includes all the features you need to develop a connected product based on an Arm Cortex-M microcontroller, including security, connectivity, an RTOS and drivers for sensors and I/O devices
Zephyr RTOS The Zephyr Project is a scalable real-time operating system (RTOS) supporting multiple hardware architectures, optimized for resource constrained devices, and built with safety and security in mind