nRF52840 DK

View Doxygen Documentation View this board's documentation as generated by Doxygen.

View on GitHub View this board's source code on GitHub.

When using this board with RIOT, set the BOARD variable to nrf52840dk in your Makefile. If you follow the standard RIOT project structure, your Makefile should look like this:

# name of your application
APPLICATION = hello-world

# Change this to your board if you want to build for a different board
BOARD ?= nrf52840dk

# This has to be the absolute path to the RIOT base directory:
RIOTBASE ?= $(CURDIR)/RIOT

include $(RIOTBASE)/Makefile.include

Support for the nRF52840 DK

General information

The nRF52840 DK is a devboard based on the nRF52840 SoC which supports multiple wireless protocols including Bluetooth Low Energy, Thread and Zigbee.

Hardware

MCU	nRF52840
Family	ARM Cortex-M4
Vendor	Nordic Semiconductor
RAM	256 KiB
Flash	1 MiB
Frequency	64 MHz
FPU	yes
Timers	5 (32-bit)
RTC	3
ADCs	1x 12-bit (8 channels)
UARTs	2
SPIs	4 masters/3 slaves
I2Cs	2
I2S	1
PWM	4*4 Channels
Radio	2.4GHz BLE compatible, -20 dBm to +8 dBm output, -95 dBm RX sensitivity
Vcc	1.7V - 5.5V
MCU Manual	Manual
Board Documentation	Documentation

RESET pin configuration

On many (all?) nrf52840dk boards, the reset pin is not configured out-of-the box. This means, that simply nothing happens if the RESET pin is pressed. To change this, RIOT provides a little tool in dist/tools/nrf52_resetpin_cfg.

Simply compile, flash, and run that tool on your board, and the reset pin should work for the time being.

Flash the board

See the Flashing section in boards_common_nrf52.

Accessing STDIO via UART

The STDIO is directly accessible via the USB port. On a Linux host, it’s generally mapped to /dev/ttyACM0.

Use the term target to connect to the board serial port

    make BOARD=nrf52840dk -C examples/basic/hello-world term