Adafruit Feather nRF52840 Sense

Support for the Adafruit Feather nRF52840 Sense. More...

Detailed Description

Support for the Adafruit Feather nRF52840 Sense.

General information

The Feather nRF52840 Sense is a development board from Adafruits Feather board family. It is very similar to the Feather nRF52840 Express but comes with more sensors.

It provides native USB support, Bluetooth Low Energy and IEEE 802.15.4 support via the nRF52840 MCU.

Flashing, Bootloader, and Terminal

Refer to the Feather nRF52840 Express documentation for further details. Both use the same flasher, bootloader, and terminal settings.

Example with hello-world application:

make BOARD=feather-nrf52840-sense -C examples/hello-world flash term

On "fresh" boards the bootloader may need to be updated.

Updating Old Bootloaders

In some cases the bootloader may be too old to even mount on startup. Double tap the reset button to get into bootloader mode and check the INFO_UF2.TXT for bootloader information. If the version is less than 0.4.0 then one can use the Adafruit_nRF52_Bootloader tool to update.

For example, one can run the following if arm-none-eabi-gcc and adafruit-nrfutil are installed:

git clone https://github.com/adafruit/Adafruit_nRF52_Bootloader.git
cd Adafruit_nRF52_Bootloader
git submodule update --init
make BOARD=feather_nrf52840_sense SERIAL=/dev/ttyACM0 flash-dfu

Files
file	bat_voltage_params.h
	Configuration of SAUL mapped battery voltage information.
file	board.h
	Board specific configuration for the Adafruit Feather nRF52840 Sense.
file	gpio_params.h
	Configuration of SAUL mapped GPIO pins.
file	periph_conf.h
	Peripheral configuration for the Adafruit Feather nRF52840 Sense.