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boards/adafruit-feather-nrf52840-express/doc.md

2026.07-devel1.5 KB
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@defgroup boards_adafruit-feather-nrf52840-express Adafruit Feather nRF52840 Express @ingroup boards @brief Support for the Adafruit Feather nRF52840 Express

General information

The Feather nRF52840 Express is a development board from Adafruits Feather board family. It provides native USB support, Bluetooth Low Energy and IEEE 802.15.4 support via the nRF52840 MCU.

Flash the board

Flashing the Feather nRF52840 is described in the common [Adafruit nRF52 Bootloader](@ref boards_common_adafruit-nrf52-bootloader) section.

Example with hello-world application:

sh
make BOARD=adafruit-feather-nrf52840-express -C examples/basic/hello-world flash

Terminal

To connect a terminal to the Feather, RIOT chooses stdio_cdc_acm per default. This lets you access the Feather directly over USB.

You have several alternative possibilities to connect to the board.

  1. With
    {.mk}
    USEMODULE += stdio_uart
    and an FTDI adapter connected to the Feather's RX and TX ports you can use UART-based terminals to connect to the feather
  2. With
    {.mk}
    USEMODULE += stdio_rtt
    you can use the Segger J-Link Programmer as a serial interface to the device.