BGM220 Explorer Kit (BGM220-EK4314A)

Overview

The BGM220 Explorer Kit is a small form factor development and evaluation platform for the BGM220P Bluetooth Module.

The kit features a USB interface, an on-board SEGGER J-Link debugger, one user-LED and button, and support for hardware add-on boards via a mikroBus socket and a Qwiic connector.

Hardware

  • BGM220PC22HNA module

    • EFR32BG22 SoC

    • Crystal for HFXO (38.4 MHz)

    • Crystal for LFXO (32768 Hz)

  • CPU core: ARM Cortex®-M33 with FPU

  • Flash memory: 512 kB

  • RAM: 32 kB

  • Transmit power: up to +8 dBm

  • Operation frequency: 2.4 GHz

For more information about the BGM220P module and Explorer Kit, refer to these documents:

Supported Features

The bgm220_ek4314a 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 system is configured to use the HFRCODPLL oscillator at 76.8 MHz as the system clock, locked to the 38.4 MHz crystal oscillator in the module.

Serial Port

The BGM220P module has two USARTs and one EUART. USART1 is connected to the board controller and is used for the console.

Programming and Debugging

The bgm220_ek4314a board supports the runners and associated west commands listed below.

flash debug

Note

Before using the kit the first time, you should update the J-Link firmware in Simplicity Studio.

Flashing

The sample application Hello World is used for this example. Build the Zephyr kernel and application:

# From the root of the zephyr repository
west build -b bgm220_ek4314a samples/hello_world

Connect the board to your host computer using the USB port and you should see a USB connection.

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’ll see the following message on the corresponding serial port terminal session:

Hello World! bgm220_ek4314a/bgm220pc22hna

Bluetooth

To use BLE 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 bgm220_ek4314a samples/bluetooth/observer