EFR32 Radio Boards

Overview

Support for EFR32 Radio boards is provided by one of the starter kits

SLWSTK6020B Bluetooth SoC Starter Kit

SLWSTK6020B (image courtesy of Silicon Labs)

Hardware

Wireless Starter Kit Mainboard:

  • Advanced Energy Monitoring provides real-time information about the energy consumption of an application or prototype design.

  • Ultra-low power 128x128 pixel memory LCD

  • 2 user buttons and 2 LEDs

  • Si7021 Humidity and Temperature Sensor

  • On-board Segger J-Link USB and Ethernet debugger

For more information about the BRD4001A board, refer to these documents:

Supported Features

The board configuration supports the following hardware features:

Interface

Controller

Driver/Component

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

SPI(M)

on-chip

spi 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

PF4

GPIO

LED0

PF5

GPIO

LED1

PF6

GPIO

Push Button PB0

PF7

GPIO

Push Button PB1

PA5

GPIO

Board Controller Enable EFM_BC_EN

PA0

USART0_TX

UART Console EFM_BC_TX US0_TX #0

PA1

USART0_RX

UART Console EFM_BC_RX US0_RX #0

PC6

SPI_MOSI

Flash MOSI US1_TX #11

PC7

SPI_MISO

Flash MISO US1_RX #11

PC8

SPI_SCLK

Flash SCLK US1_CLK #11

PA4

SPI_CS

Flash Chip Select (GPIO)

Programming and Debugging

The BRD4001A includes an J-Link serial and debug adaptor built into the board. The adaptor provides:

  • A USB connection to the host computer, which exposes a debug interface and a USB Serial Port.

  • A physical UART connection which is relayed over interface USB Serial port.

  • An Ethernet connection to support remote debugging.

It is compatible with the following host debug tools:

OpenOCD is included in the Zephyr SDK. Refer to the links above for information on how to install required host debug tools if you are not using the Zephyr SDK.

Flashing

Connect the BRD4001A main board with the mounted radio module to your host computer using the USB port.

Following example shows how to build the Hello World application for BRD4104A radio module.

# From the root of the zephyr repository
west build -b efr32_radio_brd4104a samples/hello_world
west 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:

Hello World! efr32_radio_brd4104a