EFR32xG22E 2.4 GHz 6 dBm (xG22-RB4415A)

Board Overview

EFR32xG22E 2.4 GHz 6 dBm (xG22-RB4415A)

Name:

xg22_rb4415a

Vendor:

Silicon Laboratories

Status:

Maintained

Architecture:

arm

SoC:

efr32mg22e224f512im40

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Overview

The EFR32xG22E +6 dBm Radio Board is a QFN40 radio board for the EFR32MG22E Wireless SoC. It is available standalone as xG22-RB4415A (BRD4415A).

The radio board plugs into the Wireless Pro Kit Mainboard BRD4002A and is supported in Zephyr as one of several Radio Boards.

Hardware

• EFR32MG22E224F512IM40 Mighty Gecko SoC

• CPU core: ARM Cortex®-M33 with FPU

• Flash memory: 512 kB

• RAM: 32 kB

• Transmit power: up to +6 dBm

• Operation frequency: 2.4 GHz

• Inverted-F PCB antenna

• 8 Mbit SPI NOR flash

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

For more information about the EFR32MG22E SoC and BRD4415A board, refer to these documents:

• EFR32MG22E Website

• EFR32MG22E Datasheet

• EFR32xG22 Reference Manual

• BRD4415A User Guide

Supported Features

The xg22_rb4415a 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.

xg22_rb4415a/efr32mg22e224f512im40 target

On-target memory for this board target: 32 KiB of RAM, 512 KiB of Flash.

Type	Location	Description	Compatible
CPU	on-chip	ARM Cortex-M33 CPU1	arm,cortex-m33
ADC	on-chip	Silicon Labs Series 2 IADC1	silabs,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
Counter	on-chip	Silicon Labs TIMER Counter14	silabs,timer-counter
	on-chip	Silicon Labs Series 2 BURTC1	silabs,burtc-counter
	on-chip	Silicon Labs PROTIMER counter1	silabs,protimer
CRC	on-chip	Silabs General Purpose CRC1	silabs,gpcrc
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	Silicon Labs Series 2 I2C11	silabs,i2c
Input	on-board	Group of GPIO-bound input keys1	gpio-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	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 PWM14	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
Retained memory	on-chip	Silicon Labs Series 2 BURAM1	silabs,buram
RNG	on-chip	GECKO TRNG (True Random Number Generator)1	silabs,gecko-trng
RTC	on-chip	Silicon Labs Series 2 RTCC1	silabs,rtcc
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
	on-chip	Silicon Labs Series 2 EUSART 1	silabs,eusart-uart
SPI	on-chip	Silicon Labs Series 2 USART1	silabs,usart-spi
SRAM	on-chip	Generic on-chip SRAM1	mmio-sram
Timer	on-chip	ARMv8-M System Tick1	arm,armv8m-systick
	on-chip	Silicon Labs TIMER23	silabs,series2-timer
	on-chip	Silicon Labs LETIMER1	silabs,series2-letimer
Watchdog	on-chip	Silicon Labs Series 0-2 WDOG1	silabs,gecko-wdog

System Clock

The EFR32MG22E 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 EFR32MG22E SoC has two USARTs and one EUART. USART1 is connected to the board controller and is used for the console.

Programming and Debugging

The xg22_rb4415a board supports the runners and associated west commands listed below.

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

Flashing

Connect the BRD4002A board with a mounted BRD4415A 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 xg22_rb4415a 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! xg22_rb4415a

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 xg22_rb4415a samples/bluetooth/observer