| .. _efr32_radio_brd4255a: |
| |
| EFR32 BRD4255A (SLWRB4255A) |
| ########################### |
| |
| Overview |
| ******** |
| |
| The EFR32FG13P Flex Gecko 2.4 GHz and 915 MHz Radio Board is delivered as a |
| `standalone Proprietary Wireless radio board`_. It contains a EFR32FG13P Wireless |
| SoC built on an ARM Cortex®-M4F processor with excellent low power capabilities. |
| |
| .. figure:: efr32fg13-slwrb4255a.jpg |
| :align: center |
| :alt: SLWRB4255A Flex Gecko 2.4 GHz and 915 MHz Radio Board |
| |
| SLWRB4255A (image courtesy of Silicon Labs) |
| |
| The BRD4255A a.k.a. SLWRB4255A radio board plugs into the Wireless Starter Kit |
| Mainboard BRD4001A and is supported as one of :ref:`efr32_radio`. |
| |
| Hardware |
| ******** |
| |
| - EFR32FG13P233F512GM48 Flex Gecko SoC |
| - CPU core: ARM Cortex®-M4 with FPU |
| - Flash memory: 512 kB |
| - RAM: 64 kB |
| - Transmit power: up to 19 dBm |
| - Operation frequency: 2.4 GHz, 915 MHz |
| - Crystals for LFXO (32.768 kHz) and HFXO (38.4 MHz). |
| |
| For more information about the EFR32FG13 SoC and BRD4255A board, refer to these |
| documents: |
| |
| - `EFR32FG13 Website`_ |
| - `EFR32FG13 Datasheet`_ |
| - `EFR32xG13 Reference Manual`_ |
| - `BRD4255A Reference Manual`_ |
| |
| Supported Features |
| ================== |
| |
| Please refer to |
| :ref:`EFR32 Radio Board Supported Features <efr32_radio_supported_features>` |
| for details of the configuration and common features supported by the |
| efr32_radio_brd4255a board. |
| |
| The default configuration can be found in the defconfig file: |
| |
| ``boards/arm/efr32_radio/efr32_radio_brd4255a_defconfig`` |
| |
| System Clock |
| ============ |
| |
| The EFR32FG13P SoC is configured to use the 38.4 MHz external oscillator on the |
| board. |
| |
| Serial Port |
| =========== |
| |
| The EFR32FG13P SoC has three USARTs and one Low Energy UARTs (LEUART). |
| USART0 is connected to the board controller and is used for the console. |
| |
| Programming and Debugging |
| ************************* |
| |
| Please refer to |
| :ref:`Programming and Debugging EFR32 Radio Board <efr32_radio_programming>` |
| for details on the supported debug interfaces. |
| |
| Flashing |
| ======== |
| |
| Connect the BRD4001A board with a mounted BRD4255A radio module to your host |
| computer using the USB port. |
| |
| Here is an example for the :ref:`hello_world` application. |
| |
| .. zephyr-app-commands:: |
| :zephyr-app: samples/hello_world |
| :board: efr32_radio_brd4255a |
| :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! efr32_radio_brd4255a |
| |
| |
| .. _EFR32FG13 Website: |
| https://www.silabs.com/wireless/proprietary/efr32fg13-series-1-sub-ghz-2-4-ghz-socs |
| |
| .. _EFR32FG13 Datasheet: |
| https://www.silabs.com/documents/public/data-sheets/efr32fg13-datasheet.pdf |
| |
| .. _EFR32xG13 Reference Manual: |
| https://www.silabs.com/documents/public/reference-manuals/efr32xg13-rm.pdf |
| |
| .. _standalone Proprietary Wireless radio board: |
| https://www.silabs.com/development-tools/wireless/proprietary/slwrb4255a-efr32fg13-915-mhz-radio-board |
| |
| .. _BRD4255A Reference Manual: |
| https://www.silabs.com/documents/public/reference-manuals/brd4255a-rm.pdf |