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| 1 | +.. _efr32_radio_brd4255a: |
| 2 | + |
| 3 | +EFR32 BRD4255A (SLWRB4255A) |
| 4 | +########################### |
| 5 | + |
| 6 | +Overview |
| 7 | +******** |
| 8 | + |
| 9 | +The EFR32FG13P Flex Gecko 2.4 GHz and 915 MHz Radio Board is delivered as a |
| 10 | +`standalone Proprietary Wireless radio board`_. It contains a EFR32FG13P Wireless |
| 11 | +SoC built on an ARM Cortex®-M4F processor with excellent low power capabilities. |
| 12 | + |
| 13 | +.. figure:: ./efr32fg13-slwrb4255a.jpg |
| 14 | + :height: 262px |
| 15 | + :align: center |
| 16 | + :alt: SLWRB4255A Flex Gecko 2.4 GHz and 915 MHz Radio Board |
| 17 | + |
| 18 | + SLWRB4255A (image courtesy of Silicon Labs) |
| 19 | + |
| 20 | +The BRD4255A a.k.a. SLWRB4255A radio board plugs into the Wireless Starter Kit |
| 21 | +Mainboard BRD4001A and is supported as one of :ref:`efr32_radio`. |
| 22 | + |
| 23 | +Hardware |
| 24 | +******** |
| 25 | + |
| 26 | +- EFR32FG13P233F512GM48 Flex Gecko SoC |
| 27 | +- CPU core: ARM Cortex®-M4 with FPU |
| 28 | +- Flash memory: 512 kB |
| 29 | +- RAM: 64 kB |
| 30 | +- Transmit power: up to 19 dBm |
| 31 | +- Operation frequency: 2.4 GHz, 915 MHz |
| 32 | +- Crystals for LFXO (32.768 kHz) and HFXO (38.4 MHz). |
| 33 | + |
| 34 | +For more information about the EFR32FG13 SoC and BRD4255A board, refer to these |
| 35 | +documents: |
| 36 | + |
| 37 | +- `EFR32FG13 Website`_ |
| 38 | +- `EFR32FG13 Datasheet`_ |
| 39 | +- `EFR32xG13 Reference Manual`_ |
| 40 | +- `BRD4255A Reference Manual`_ |
| 41 | + |
| 42 | +Supported Features |
| 43 | +================== |
| 44 | + |
| 45 | +Please refer to |
| 46 | +:ref:`EFR32 Radio Board Supported Features <efr32_radio_supported_features>` |
| 47 | +for details of the configuration and common features supported by the |
| 48 | +efr32_radio_brd4255a board. |
| 49 | + |
| 50 | +The default configuration can be found in the defconfig file: |
| 51 | + |
| 52 | + ``boards/arm/efr32_radio/efr32_radio_brd4255a_defconfig`` |
| 53 | + |
| 54 | +System Clock |
| 55 | +============ |
| 56 | + |
| 57 | +The EFR32FG13P SoC is configured to use the 38.4 MHz external oscillator on the |
| 58 | +board. |
| 59 | + |
| 60 | +Serial Port |
| 61 | +=========== |
| 62 | + |
| 63 | +The EFR32FG13P SoC has three USARTs and one Low Energy UARTs (LEUART). |
| 64 | +USART0 is connected to the board controller and is used for the console. |
| 65 | + |
| 66 | +Programming and Debugging |
| 67 | +************************* |
| 68 | + |
| 69 | +Please refer to |
| 70 | +:ref:`Programming and Debugging EFR32 Radio Board <efr32_radio_programming>` |
| 71 | +for details on the supported debug interfaces. |
| 72 | + |
| 73 | +Flashing |
| 74 | +======== |
| 75 | + |
| 76 | +Connect the BRD4001A board with a mounted BRD4255A radio module to your host |
| 77 | +computer using the USB port. |
| 78 | + |
| 79 | +Here is an example for the :ref:`hello_world` application. |
| 80 | + |
| 81 | +.. zephyr-app-commands:: |
| 82 | + :zephyr-app: samples/hello_world |
| 83 | + :board: efr32_radio_brd4255a |
| 84 | + :goals: flash |
| 85 | + |
| 86 | +Open a serial terminal (minicom, putty, etc.) with the following settings: |
| 87 | + |
| 88 | +- Speed: 115200 |
| 89 | +- Data: 8 bits |
| 90 | +- Parity: None |
| 91 | +- Stop bits: 1 |
| 92 | + |
| 93 | +Reset the board and you should see the following message in the terminal: |
| 94 | + |
| 95 | +.. code-block:: console |
| 96 | +
|
| 97 | + Hello World! efr32_radio_brd4255a |
| 98 | +
|
| 99 | +
|
| 100 | +.. _EFR32FG13 Website: |
| 101 | + https://www.silabs.com/wireless/proprietary/efr32fg13-series-1-sub-ghz-2-4-ghz-socs |
| 102 | + |
| 103 | +.. _EFR32FG13 Datasheet: |
| 104 | + https://www.silabs.com/documents/public/data-sheets/efr32fg13-datasheet.pdf |
| 105 | + |
| 106 | +.. _EFR32xG13 Reference Manual: |
| 107 | + https://www.silabs.com/documents/public/reference-manuals/efr32xg13-rm.pdf |
| 108 | + |
| 109 | +.. _standalone Proprietary Wireless radio board: |
| 110 | + https://www.silabs.com/development-tools/wireless/proprietary/slwrb4255a-efr32fg13-915-mhz-radio-board |
| 111 | + |
| 112 | +.. _BRD4255A Reference Manual: |
| 113 | + https://www.silabs.com/documents/public/reference-manuals/brd4255a-rm.pdf |
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