.. zephyr:board:: xg24_ek2703a

Overview

The EFR32xG24 Explorer Kit (xG24-EK2703A) contains a Wireless System-On-Chip from the EFR32MG24 family built on an ARM Cortex®-M33 processor with excellent low power capabilities.

Hardware

EFR32MG24B210F1536IM48-B Mighty Gecko SoC
CPU core: ARM Cortex®-M33 with FPU
Flash memory: 1536 kB
RAM: 256 kB
Transmit power: up to +10 dBm
Operation frequency: 2.4 GHz
Crystals for LFXO (32.768 kHz) and HFXO (39 MHz).

For more information about the EFR32MG24 SoC and BRD2703A board, refer to these documents:

EFR32MG24 Website_
EFR32MG24 Datasheet_
EFR32xG24 Reference Manual_
BRD2703A User Guide_

Supported Features

.. zephyr:board-supported-hw::

Connections and IOs

In the following table, the column Name contains Pin names. For example, PA2 means Pin number 2 on PORTA, as used in the board's datasheets and manuals.

+-------+-------------+-------------------------------------+ | Name | Function | Usage | +=======+=============+=====================================+ | PA4 | GPIO | LED0 | +-------+-------------+-------------------------------------+ | PA7 | GPIO | LED1 | +-------+-------------+-------------------------------------+ | PB2 | GPIO | Push Button 0 | +-------+-------------+-------------------------------------+ | PB3 | GPIO | Push Button 1 | +-------+-------------+-------------------------------------+ | PA5 | USART0_TX | UART Console VCOM_TX US0_TX | +-------+-------------+-------------------------------------+ | PA6 | USART0_RX | UART Console VCOM_RX US0_RX | +-------+-------------+-------------------------------------+

The default configuration can be found in :zephyr_file:boards/silabs/dev_kits/xg24_ek2703a/xg24_ek2703a_defconfig

System Clock

The EFR32MG24 SoC is configured to use the 39 MHz external oscillator on the board.

Serial Port

The EFR32MG24 SoC has one USART and two EUSARTs. USART0 is connected to the board controller and is used for the console.

Programming and Debugging

.. zephyr:board-supported-runners::

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

Flashing

The sample application :zephyr:code-sample:hello_world is used for this example. Build the Zephyr kernel and application:

.. zephyr-app-commands:: :zephyr-app: samples/hello_world :board: xg24_ek2703a :goals: build

Connect the xg24_ek2703a 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:

.. code-block:: console

Hello World! xg24_ek2703a

Bluetooth

To use the BLE function, run the command below to retrieve necessary binary blobs from the SiLabs 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: xg24_ek2703a :goals: build

.. _EFR32MG24 Website: https://www.silabs.com/wireless/zigbee/efr32mg24-series-2-socs#

.. _EFR32MG24 Datasheet: https://www.silabs.com/documents/public/data-sheets/efr32mg24-datasheet.pdf

.. _EFR32xG24 Reference Manual: https://www.silabs.com/documents/public/reference-manuals/efr32xg24-rm.pdf

.. _BRD2703A User Guide: https://www.silabs.com/documents/public/user-guides/ug533-xg24-ek2703a.pdf