EFR32xG26 2.4 GHz +10 dBm Radio Board

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 Radio Boards for more information about the Wireless Mainboard platform.

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:

Supported Features

The xg26_rb4120a board supports the hardware features listed below.

on-chip / on-board
Feature integrated in the SoC / present on the board.
2 / 2
Number of instances that are enabled / disabled.
Click on the label to see the first instance of this feature in the board/SoC DTS files.
vnd,foo
Compatible string for the Devicetree binding matching the feature.
Click on the link to view the binding documentation.

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

The xg26_rb4120a board supports the runners and associated west commands listed below.

flash debug

Flashing

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

Here is an example for the Hello World application.

# From the root of the zephyr repository
west build -b xg26_rb4120a samples/hello_world
west 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:

Hello World! xg26_rb4120a

Bluetooth

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

west blobs fetch hal_silabs

Then build the Zephyr kernel and a Bluetooth sample with the following command. The Observer sample application is used in this example.

# From the root of the zephyr repository
west build -b xg26_rb4120a samples/bluetooth/observer