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Overview

boards/silabs/radio_boards/xg22/doc/slwrb4311a.rst

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.. zephyr:board:: slwrb4311a

Overview

The BGM220PC22 Bluetooth Module 2.4 GHz +8 dBm Radio Board_ is available standalone and as part of the BGM220 Bluetooth Module Wireless Starter Kit_. It is a complete reference design for the BGM220 Wireless Module.

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

.. _BGM220PC22 Bluetooth Module 2.4 GHz +8 dBm Radio Board: https://www.silabs.com/development-tools/wireless/bluetooth/slwrb4311a-bgm220pc22-bluetooth-module-radio-board

.. _BGM220 Bluetooth Module Wireless Starter Kit: https://www.silabs.com/development-tools/wireless/bluetooth/bgm220-wireless-starter-kit

Hardware

  • BGM220PC22HNA module based on EFR32BG22 SoC
  • CPU core: ARM Cortex®-M33 with FPU, DSP and TrustZone
  • Memory: 512 kB Flash, 32 kB RAM
  • Transmit power: up to +8 dBm
  • Operation frequency: 2.4 GHz
  • Crystals for LFXO (32.768 kHz) and HFXO (38.4 MHz)
  • 8 Mbit SPI NOR Flash

For more information about the BGM220 module and BRD4311A board, refer to these documents:

  • SLWRB4311A User Guide <https://www.silabs.com/documents/public/user-guides/ug432-brd4311a-user-guide.pdf>__
  • EFR32xG22 Reference Manual <https://www.silabs.com/documents/public/reference-manuals/efr32xg22-rm.pdf>__
  • BGM220P Datasheet <https://www.silabs.com/documents/public/data-sheets/bgm220p-datasheet.pdf>__

Supported Features

.. zephyr:board-supported-hw::

System Clock

The BGM220 module is configured to use the HFRCODPLL oscillator at 76.8 MHz as the system clock, locked to the 38.4 MHz external crystal oscillator on the board.

Serial Port

The BGM220 module has two USARTs and one EUART. USART1 is connected to the board controller and is used for the console.

Programming and Debugging

.. zephyr:board-supported-runners ::

Connect the BRD4001A mainboard with a mounted BRD4311A radio 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: slwrb4311a :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! slwrb4311a

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: slwrb4311a :goals: build