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BBC micro:bit v2

Support for the BBC micro:bit v2. More...

Detailed Description

Support for the BBC micro:bit v2.


The micro:bit v2 was designed by the BBC and released in 2020.

The board is based on the Nordic nRF52833 SoC, featuring 128KiB of RAM, 512KiB of ROM, and a 2.4GHz radio, that supports Bluetooth Low Energy (BLE), 802.15.4 as well as a Nordic proprietary radio mode.

Additionally the boards features 2 buttons, a 5x5 LED matrix, a speaker, a microphone, an accelerometer and a magnetometer.


Flashing and Debugging

The board can be flashed using OpenOCD and PyOCD. Debugger is also available with both programmers.

BOARD=microbit make flash


The programmer chip provides access to STDIO via USB. On Linux, stdio is usually available on /dev/ttyACM0. Use the term target to access stdio:

BOARD=microbit make term


The 5x5 LED matrix display can be driven using the Common microbit LED handling.

Button setup

The Microbit logo and the rings are configured in resistive mode, and expressed as buttons by default when SAUL is enabled (through saul_gpio_params_t). Note that to press them, you have to touch the GND pin at the same time, and may need to press hard if you have dry fingers. See the micro:bit documentation on touch for more information. Capacitive mode is currently not supported.


file  board.h
 Board specific configuration for the BBC micro:bit v2.
file  gpio_params.h
 Board specific configuration of direct mapped GPIOs.
file  periph_conf.h
 Peripheral configuration for the BBC micro:bit v2.