.. zephyr:board:: slwrb4180b

Overview

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The EFR32MG21 Mighty Gecko Radio Board is one of the two radio boards delivered with EFR32-SLWSTK6006A Website_. It features a Wireless System-On-Chip (SoC) from the EFR32MG21 family, built on an ARM Cortex®-M33F processor, offering exceptional low-power performance.

The SLWRB4180B radio board is designed to connect seamlessly with the Wireless Starter Kit Mainboards BRD4001A and BRD4002A

Hardware

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• 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 BRD4180B board, refer to these documents:

• EFR32MG21 Website_
• EFR32MG21 Datasheet_
• EFR32xG21 Reference Manual_
• EFR32-SLWSTK6006A Website_
• BRD4180B User Guide_

Supported Features

.. zephyr:board-supported-hw::

Connections and IOs

In the following table, the column Name contains Pin names. For example, PD2 means Pin number 2 on PORTD, as used in the board's datasheets and manuals.

+-------+-------------+-------------------------------------+ | Name | Function | Usage | +=======+=============+=====================================+ | PD2 | GPIO | LED0 | +-------+-------------+-------------------------------------+ | PD3 | GPIO | LED1 | +-------+-------------+-------------------------------------+ | PB0 | GPIO | Push Button PB0 | +-------+-------------+-------------------------------------+ | PB1 | 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 :zephyr_file:boards/silabs/radio_boards/slwrb4180b/slwrb4180b_defconfig

Programming and Debugging

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.. zephyr:board-supported-runners::

Flashing

Connect the BRD4001A or BRD4002A mainboard, with the BRD4180B radio module mounted, to your host computer via the USB port.

Here is an example for the :zephyr:code-sample:hello_world application.

.. zephyr-app-commands:: :zephyr-app: samples/hello_world :board: slwrb4180b :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! slwrb4180b

.. _EFR32-SLWSTK6006A Website: https://www.silabs.com/products/development-tools/wireless/efr32xg21-wireless-starter-kit

.. _BRD4180B User Guide: https://www.silabs.com/documents/public/user-guides/ug427-brd4180b-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