EFR32xG27 2.4 GHz 8 dBm (xG27-RB4194A)

Board Overview

EFR32xG27 2.4 GHz 8 dBm (xG27-RB4194A)

Name:

xg27_rb4194a

Vendor:

Silicon Laboratories

Architecture:

arm

SoC:

efr32mg27c140f768im40

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Overview

The EFR32xG27 2.4 GHz 8 dBm Radio Board is a plug-in board for the Wireless Starter Kit Mainboard (BRD4001A) and the Wireless Pro Kit Mainboard (BRD4002A). It is a complete reference design for the EFR32xG27 Wireless SoC, with matching network and a PCB antenna for 8 dBm output power in the 2.4 GHz band.

See Radio Boards for more information about the Wireless Mainboard platform.

Hardware

• EFR32MG27C140F768IM40 SoC

• CPU core: ARM Cortex®-M33 with FPU, DSP and TrustZone

• Memory: 768 kB Flash, 64 kB RAM

• Transmit power: up to +8 dBm

• Operation frequency: 2.4 GHz

• Crystals for LFXO (32.768 kHz) and HFXO (38.4 MHz)

• 8 Mbit SPI NOR Flash

For more information about the EFR32MG27 SoC and BRD4194A board, refer to these documents:

• xG27-RB4194A Website

• xG27-RB4194A User Guide

• EFR32MG27 Website

• EFR32MG27 Datasheet

• EFR32xG27 Reference Manual

Supported Features

The xg27_rb4194a board supports the hardware features listed below.

on-chip / on-board

Feature integrated in the SoC / present on the board.

2 / 2

Number of instances that are enabled / disabled.
Click on the label to see the first instance of this feature in the board/SoC DTS files.

vnd,foo

Compatible string for the Devicetree binding matching the feature.
Click on the link to view the binding documentation.

xg27_rb4194a/efr32mg27c140f768im40 target

Type	Location	Description	Compatible
CPU	on-chip	ARM Cortex-M33 CPU1	arm,cortex-m33
ADC	on-chip	Silicon Labs Series 2 IADC1	silabs,gecko-iadc
Bluetooth	on-chip	Silicon Labs Series 2 Bluetooth HCI1	silabs,bt-hci-efr32
Clock control	on-chip	Silicon Labs Series 2 CMU1	silabs,series-clock
	on-chip	Silicon Labs Series 2 HFXO1	silabs,hfxo
	on-chip	Silicon Labs Series 2 HFRCODPLL1	silabs,series2-hfrcodpll
	on-chip	Generic fixed-rate clock provider3	fixed-clock
	on-chip	Silicon Labs Series 2 LFXO1	silabs,series2-lfxo
	on-chip	Silicon Labs Series 2 LFRCO1	silabs,series2-lfrco
	on-chip	Generic fixed factor clock provider18	fixed-factor-clock
Comparator	on-chip	Silicon Labs Series 2 ACMP1	silabs,acmp
Debug	on-chip	Silicon Labs Packet Trace Interface1	silabs,pti
	on-chip	ARMv8 instrumentation trace macrocell1	arm,armv8m-itm
Display	on-board	Sharp LS0XX memory display controller1	sharp,ls0xx
DMA	on-chip	Silicon Labs Series 2 LDMA1	silabs,ldma
Flash controller	on-chip	Silicon Labs Series 2 MSC1	silabs,series2-flash-controller
GPIO & Headers	on-chip	Silicon Labs Series 2 GPIO Peripheral1	silabs,gpio
	on-chip	Silicon Labs Series 2 GPIO Port4	silabs,gpio-port
	on-board	Silicon Labs Kit Expansion Header1	silabs,exp-header
I2C	on-chip	Silabs I2C node1 1	silabs,i2c
Input	on-board	Group of GPIO-bound input keys1	gpio-keys
	on-board	Input driver for ADC attached resistor ladder buttons1	adc-keys
Interrupt controller	on-chip	ARMv8-M NVIC (Nested Vectored Interrupt Controller)1	arm,v8m-nvic
LED	on-board	Group of GPIO-controlled LEDs1	gpio-leds
	on-board	Group of PWM-controlled LEDs1	pwm-leds
MMU / MPU	on-chip	ARMv8-M MPU (Memory Protection Unit)1	arm,armv8m-mpu
MTD	on-chip	Flash node1	soc-nv-flash
	on-board	Fixed partitions of a flash (or other non-volatile storage) memory1	fixed-partitions
	on-board	Properties supporting Zephyr spi-nor flash driver (over the Zephyr SPI API) control of serial flash memories using the standard M25P80-based command set1	jedec,spi-nor
Networking	on-chip	Silicon Labs Series 2 Radio Interface1	silabs,series2-radio
Pin control	on-chip	Silicon Labs Series 2 DBUS Pin Controller1	silabs,dbus-pinctrl
PWM	on-chip	Silicon Labs TIMER PWM5	silabs,timer-pwm
	on-chip	Silicon Labs LETIMER PWM1	silabs,letimer-pwm
Regulator	on-chip	Silicon Labs Series 2 DC-DC converter1	silabs,series2-dcdc
	on-board	Fixed voltage regulators1	regulator-fixed
RNG	on-chip	GECKO TRNG (True Random Number Generator)1	silabs,gecko-trng
RTC	on-chip	Silicon Labs Series 2 Sleeptimer1	silabs,gecko-stimer
Sensors	on-board	Silicon Labs Si7006/13/20/21 RHT Sensor1	silabs,si7006
Serial controller	on-chip	Silicon Labs Series 2 USART1	silabs,usart-uart
SPI	on-chip	Silicon Labs Series 2 USART1	silabs,usart-spi
	on-chip	Silicon Labs Series 2 EUSART 1	silabs,eusart-spi
SRAM	on-chip	Generic on-chip SRAM1	mmio-sram
Timer	on-chip	ARMv8-M System Tick1	arm,armv8m-systick
	on-chip	Silicon Labs TIMER5	silabs,series2-timer
	on-chip	Silicon Labs Series 2 BURTC1	silabs,gecko-burtc
	on-chip	Silicon Labs LETIMER1	silabs,series2-letimer
Watchdog	on-chip	Silicon Labs Series 1-2 WDOG1	silabs,gecko-wdog

System Clock

The EFR32MG27 SoC is configured to use the HFRCODPLL oscillator at 76.8 MHz as the system clock, locked to the 38.4 MHz external crystal oscillator on the board.

Serial Port

The EFR32MG27 SoC has two USARTs and one EUSART. USART1 is connected to the board controller and is used for the console.

Programming and Debugging

The xg27_rb4194a board supports the runners and associated west commands listed below.

	flash	debug	attach	rtt	debugserver
jlink	✅ (default)	✅ (default)	✅	✅	✅
silabs_commander	✅

Connect the BRD4002A mainboard with a mounted BRD4194A radio board to your host computer using the USB port.

Here is an example for the Hello World application.

# From the root of the zephyr repository
west build -b xg27_rb4194a 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! xg27_rb4194a

Bluetooth

To use Bluetooth functionality, run the command below to retrieve necessary binary blobs from the Silicon Labs HAL repository.

west blobs fetch hal_silabs

Then build the Zephyr kernel and a Bluetooth sample with the following command. The Observer sample application is used in this example.

# From the root of the zephyr repository
west build -b xg27_rb4194a samples/bluetooth/observer