| .. _efr32_radio_brd4180a: |
| |
| EFR32 BRD4180A (SLWRB4180A) |
| ########################### |
| |
| Overview |
| ******** |
| |
| The EFR32MG21 Mighty Gecko Radio Board is one of the two |
| radio boards delivered with `EFR32-SLWSTK6006A Website`_. It contains |
| a Wireless System-On-Chip from the EFR32MG21 family built on an |
| ARM Cortex®-M33F processor with excellent low power capabilities. |
| |
| .. figure:: efr32mg21-slwrb4180a.jpg |
| :align: center |
| :alt: SLWRB4180A Mighty Gecko Radio Board |
| |
| SLWRB4180A (image courtesy of Silicon Labs) |
| |
| The BRD4180A a.k.a. SLWRB4180A radio board plugs into the Wireless Starter Kit |
| Mainboard BRD4001A and is supported as one of :ref:`efr32_radio`. |
| |
| Hardware |
| ******** |
| |
| - EFR32MG21A020F1024IM32 Mighty Gecko SoC |
| - CPU core: ARM Cortex®-M33 with FPU |
| - Flash memory: 1024 kB |
| - RAM: 96 kB |
| - Transmit power: up to +20 dBm |
| - Operation frequency: 2.4 GHz |
| - Crystals for LFXO (32.768 kHz) and HFXO (38.4 MHz). |
| |
| For more information about the EFR32MG21 SoC and BRD4180A board, refer to these |
| documents: |
| |
| - `EFR32MG21 Website`_ |
| - `EFR32MG21 Datasheet`_ |
| - `EFR32xG21 Reference Manual`_ |
| - `EFR32-SLWSTK6006A Website`_ |
| - `BRD4180A User Guide`_ |
| |
| Supported Features |
| ================== |
| |
| The board configuration supports the following hardware features: |
| |
| +-----------+------------+-------------------------------------+ |
| | Interface | Controller | Driver/Component | |
| +===========+============+=====================================+ |
| | MPU | on-chip | memory protection unit | |
| +-----------+------------+-------------------------------------+ |
| | NVIC | on-chip | nested vector interrupt controller | |
| +-----------+------------+-------------------------------------+ |
| | SYSTICK | on-chip | systick | |
| +-----------+------------+-------------------------------------+ |
| | COUNTER | on-chip | rtcc | |
| +-----------+------------+-------------------------------------+ |
| | FLASH | on-chip | flash memory | |
| +-----------+------------+-------------------------------------+ |
| | GPIO | on-chip | gpio | |
| +-----------+------------+-------------------------------------+ |
| | UART | on-chip | serial port-polling; | |
| | | | serial port-interrupt | |
| +-----------+------------+-------------------------------------+ |
| | I2C | on-chip | i2c port-polling | |
| +-----------+------------+-------------------------------------+ |
| | WATCHDOG | on-chip | watchdog | |
| +-----------+------------+-------------------------------------+ |
| |
| Other hardware features are currently not supported by the port. |
| |
| 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 | |
| +=======+=============+=====================================+ |
| | PB0 | GPIO | LED0 | |
| +-------+-------------+-------------------------------------+ |
| | PB1 | GPIO | LED1 | |
| +-------+-------------+-------------------------------------+ |
| | PD2 | GPIO | Push Button PB0 | |
| +-------+-------------+-------------------------------------+ |
| | PD3 | GPIO | Push Button PB1 | |
| +-------+-------------+-------------------------------------+ |
| | PD4 | GPIO | Board Controller Enable | |
| | | | EFM_BC_EN | |
| +-------+-------------+-------------------------------------+ |
| | PA5 | USART1_TX | UART Console EFM_BC_TX US1_TX | |
| +-------+-------------+-------------------------------------+ |
| | PA6 | USART1_RX | UART Console EFM_BC_RX US1_RX | |
| +-------+-------------+-------------------------------------+ |
| |
| The default configuration can be found in the defconfig file: |
| |
| ``boards/arm/efr32_radio/efr32_radio_brd4180a_defconfig`` |
| |
| System Clock |
| ============ |
| |
| The EFR32MG21 SoC is configured to use the 38.4 MHz external oscillator on the |
| board. |
| |
| Serial Port |
| =========== |
| |
| The EFR32MG21 SoC has three USARTs. |
| 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 BRD4180A 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_brd4180a |
| :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_brd4180a |
| |
| |
| .. _EFR32-SLWSTK6006A Website: |
| https://www.silabs.com/products/development-tools/wireless/efr32xg21-wireless-starter-kit |
| |
| .. _BRD4180A User Guide: |
| https://www.silabs.com/documents/public/user-guides/ug385-brd4180a-user-guide.pdf |
| |
| .. _EFR32MG21 Website: |
| https://www.silabs.com/products/wireless/mesh-networking/efr32mg21-series-2-socs |
| |
| .. _EFR32MG21 Datasheet: |
| https://www.silabs.com/documents/public/data-sheets/efr32mg21-datasheet.pdf |
| |
| .. _EFR32xG21 Reference Manual: |
| https://www.silabs.com/documents/public/reference-manuals/efr32xg21-rm.pdf |