EFR32xG24 Explorer Kit (xG24-EK2703A)

Overview

The EFR32xG24 Explorer Kit (xG24-EK2703A) contains a Wireless System-On-Chip from the EFR32MG24 family built on an ARM Cortex®-M33 processor with excellent low power capabilities.

Hardware

EFR32MG24B210F1536IM48-B Mighty Gecko SoC
CPU core: ARM Cortex®-M33 with FPU
Flash memory: 1536 kB
RAM: 256 kB
Transmit power: up to +10 dBm
Operation frequency: 2.4 GHz
Crystals for LFXO (32.768 kHz) and HFXO (39 MHz).

For more information about the EFR32MG24 SoC and BRD2703A board, refer to these documents:

Supported Features

The xg24_ek2703a 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.

xg24_ek2703a

/

efr32mg24b210f1536im48

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	Generic fixed-rate clock provider3	`fixed-clock`
	on-chip	Silicon Labs Series 2 HFXO1	`silabs,hfxo`
	on-chip	Silicon Labs Series 2 LFXO1	`silabs,series2-lfxo`
	on-chip	Silicon Labs Series 2 HFRCODPLL1	`silabs,series2-hfrcodpll`
	on-chip	Silicon Labs Series 2 HFRCOEM231	`silabs,series2-hfrcoem23`
	on-chip	Silicon Labs Series 2 LFRCO1	`silabs,series2-lfrco`
	on-chip	Generic fixed factor clock provider20	`fixed-factor-clock`
Comparator	on-chip	Silicon Labs Series 2 ACMP1	`silabs,acmp`
Cryptographic accelerator	on-chip	Silicon Labs Series 2 SE Mailbox1	`silabs,gecko-semailbox`
Debug	on-chip	ARMv8 instrumentation trace macrocell1	`arm,armv8m-itm`
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 0-2 GPIO Peripheral1	`silabs,gecko-gpio`
GPIO & Headers	on-chip	Silicon Labs Series 0-2 GPIO Port4	`silabs,gecko-gpio-port`
I2C	on-chip	Silicon Labs Series 0-2 I2C1	`silabs,gecko-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`
Miscellaneous	on-board	GPIO Wake Up Trigger for EFR32BG22/EFR32BG271	`silabs,gecko-wake-up-trigger`
MTD	on-chip	Flash node1	`soc-nv-flash`
MTD	on-board	Fixed partitions of a flash (or other non-volatile storage) memory1	`fixed-partitions`
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`
Regulator	on-chip	Silicon Labs Series 2 DC-DC converter1	`silabs,series2-dcdc`
RTC	on-chip	Silicon Labs Series 2 Sleeptimer1	`silabs,gecko-stimer`
Serial controller	on-chip	Silicon Labs Series 2 USART1	`silabs,usart-uart`
SPI	on-chip	Silicon Labs Series 2 EUSART 2	`silabs,eusart-spi`
SRAM	on-chip	Generic on-chip SRAM1	`mmio-sram`
Timer	on-chip	ARMv8-M System Tick1	`arm,armv8m-systick`
Timer	on-chip	Silicon Labs Series 2 BURTC1	`silabs,gecko-burtc`
Watchdog	on-chip	Silicon Labs Series 1-2 WDOG1 1	`silabs,gecko-wdog`

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
PA4	GPIO	LED0
PA7	GPIO	LED1
PB2	GPIO	Push Button 0
PB3	GPIO	Push Button 1
PA5	USART0_TX	UART Console VCOM_TX US0_TX
PA6	USART0_RX	UART Console VCOM_RX US0_RX

The default configuration can be found in boards/silabs/dev_kits/xg24_ek2703a/xg24_ek2703a_defconfig

System Clock

The EFR32MG24 SoC is configured to use the 39 MHz external oscillator on the board.

Serial Port

The EFR32MG24 SoC has one USART and two EUSARTs. USART0 is connected to the board controller and is used for the console.

Programming and Debugging

The xg24_ek2703a board supports the runners and associated west commands listed below.

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

Note

Before using the kit the first time, you should update the J-Link firmware in Simplicity Studio.

Flashing

The sample application Hello World is used for this example. Build the Zephyr kernel and application:

# From the root of the zephyr repository
west build -b xg24_ek2703a samples/hello_world

Connect the xg24_ek2703a to your host computer using the USB port and you should see a USB connection.

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’ll see the following message on the corresponding serial port terminal session:

Hello World! xg24_ek2703a

Bluetooth

To use the BLE function, run the command below to retrieve necessary binary blobs from the SiLabs 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 xg24_ek2703a samples/bluetooth/observer