.. zephyr:board:: xg26_rb4120a

Overview

The EFR32xG26 2.4 GHz +10 dBm Radio Board_ is a plug-in board for the Wireless Starter Kit Mainboard (BRD4001A) and the Wireless Pro Kit Mainboard (BRD4002A) based on the EFR32MG26 SoC_. It supports the development of 2.4 GHz Wireless IoT devices for protocols including Bluetooth LE, Bluetooth Mesh, Zigbee, and Matter.

See :ref:silabs_radio_boards for more information about the Wireless Mainboard platform.

.. _EFR32xG26 2.4 GHz +10 dBm Radio Board: https://www.silabs.com/development-tools/wireless/xg26-rb4120a-efr32xg26-wireless-10-dbm-radio-board

.. _EFR32MG26 SoC: https://www.silabs.com/wireless/zigbee/efr32mg26-series-2-socs

Hardware

EFR32MG26B510F3200IM68 SoC
CPU core: ARM Cortex®-M33 with FPU, DSP and TrustZone
Memory: 3200 kB Flash, 512 kB RAM
Transmit power: up to +10 dBm
Operation frequency: 2.4 GHz
Crystals for LFXO (32.768 kHz) and HFXO (39 MHz) on the board
8 Mbit SPI NOR Flash

For more information about the EFR32MG26 SoC and radio board, refer to these documents:

EFR32MG26 Datasheet_
EFR32xG26 Reference Manual_
xG26-RB4120A User Guide_

.. _EFR32MG26 Datasheet: https://www.silabs.com/documents/public/data-sheets/efr32mg26-datasheet.pdf

.. _EFR32xG26 Reference Manual: https://www.silabs.com/documents/public/reference-manuals/efr32xg26-rm.pdf

.. _xG26-RB4120A User Guide: https://www.silabs.com/documents/public/user-guides/ug609-brd4120a-user-guide.pdf

Supported Features

.. zephyr:board-supported-hw::

System Clock

The EFR32MG26 SoC is configured to use the HFRCODPLL oscillator at 78 MHz as the system clock, locked to the 39 MHz crystal oscillator on the board.

Serial Port

The EFR32MG26 SoC has 3 USARTs and 4 EUSARTs. USART0 is connected to the board controller and is used for the console.

Programming and Debugging

.. zephyr:board-supported-runners::

Flashing

Connect the board to your host computer using the USB port.

Here is an example for the :zephyr:code-sample:hello_world application.

.. zephyr-app-commands:: :zephyr-app: samples/hello_world :board: xg26_rb4120a :goals: flash

Open a serial terminal (minicom, putty, etc.) with the following settings:

Speed: 115200
Data: 8 bits
Parity: None
Stop bits: 1

Reset the board and you should see the following message in the terminal:

.. code-block:: console

Hello World! xg26_rb4120a

Bluetooth

To use Bluetooth functionality, run the command below to retrieve necessary binary blobs from the Silicon Labs HAL repository.

.. code-block:: console

west blobs fetch hal_silabs

Then build the Zephyr kernel and a Bluetooth sample with the following command. The :zephyr:code-sample:bluetooth_observer sample application is used in this example.

.. zephyr-app-commands:: :zephyr-app: samples/bluetooth/observer :board: xg26_rb4120a :goals: build