EFR32xG23 868-915 MHz 20 dBm (xG23-RB4210A)

Overview

The EFR32ZG23 Radio Board is the radio board delivered with xG23-PK6068A Website. It contains a Wireless System-On-Chip from the EFR32ZG23 family built on an ARM Cortex®-M33 processor with excellent low power capabilities.

The BRD4210A a.k.a. xG23-RB4210A radio board plugs into the Wireless Pro Kit Mainboard BRD4002A and is supported as one of Radio Boards.

Hardware

EFR32ZG23B020F512IM48 SoC
CPU core: ARM Cortex®-M33 with FPU
Flash memory: 512 kB
RAM: 64 kB
Transmit power: up to +20 dBm
Operation frequency: 868-915 MHz
Crystals for LFXO (32.768 kHz) and HFXO (39 MHz).
Silicon Labs Si7021 relative humidity and temperature sensor
Low-power 128x128 pixel Memory LCD
Macronix ultra low power 8-Mbit SPI flash (MX25R8035F)

For more information about the EFR32ZG23 SoC and BRD4210A board, refer to these documents:

Supported Features

The xg23_rb4210a 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.

xg23_rb4210a

/

efr32zg23b020f512im48

Type	Location	Description	Compatible
CPU	on-chip	ARM Cortex-M33 CPU1	`arm,cortex-m33`
ADC	on-chip	Silicon Labs Gecko Family IADC1	`silabs,gecko-iadc`
Clock control	on-chip	Silicon Labs Series 2+ clock control node1	`silabs,series-clock`
	on-chip	Generic fixed-rate clock provider3	`fixed-clock`
	on-chip	Generic fixed-rate clock provider1	`silabs,hfxo`
	on-chip	Silicon Labs LFXO peripheral (low-frequency crystal oscillator)1	`silabs,series2-lfxo`
	on-chip	Silicon Labs HFRCODPLL peripheral (high-frequency RC oscillator with digital phase-locked loop)1	`silabs,series2-hfrcodpll`
	on-chip	Silicon Labs HFRCOEM23 peripheral (high-frequency RC oscillator with energy mode 2 and 3 capability)1	`silabs,series2-hfrcoem23`
	on-chip	Silicon Labs LFRCO peripheral (low-frequency RC oscillator)1	`silabs,series2-lfrco`
	on-chip	Generic fixed factor clock provider22	`fixed-factor-clock`
Comparator	on-chip	Silabs ACMP (Analog Comparator)1	`silabs,acmp`
Cryptographic accelerator	on-chip	Silicon Labs Secure Element mailbox node1	`silabs,gecko-semailbox`
Display	on-board	Sharp memory display controller1	`sharp,ls0xx`
DMA	on-chip	Silabs LDMA controller1	`silabs,ldma`
Flash controller	on-chip	Silicon Labs Series 2 flash controller1	`silabs,series2-flash-controller`
GPIO & Headers	on-chip	SiLabs Gecko GPIO1	`silabs,gecko-gpio`
GPIO & Headers	on-chip	SiLabs Gecko GPIO Port4	`silabs,gecko-gpio-port`
I2C	on-chip	Silabs Gecko I2C1 1	`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`
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	The Silabs pin controller is a singleton node responsible for controlling pin function selection and pin properties1	`silabs,dbus-pinctrl`
Regulator	on-chip	Silicon Labs Series 2 DC-DC converter1	`silabs,series2-dcdc`
Regulator	on-board	Fixed voltage regulators1	`regulator-fixed`
RTC	on-chip	Silabs Gecko Sleep Timer (Real-Time Counter)1	`silabs,gecko-stimer`
Sensors	on-board	Silicon Labs Si7006 Humidity and Temperature Sensor1	`silabs,si7006`
Serial controller	on-chip	Silabs USART UART1	`silabs,usart-uart`
Serial controller	on-chip	Silabs EUSART UART1	`silabs,eusart-uart`
SPI	on-chip	Silabs EUSART SPI1 1	`silabs,eusart-spi`
SRAM	on-chip	Generic on-chip SRAM description1	`mmio-sram`
Timer	on-chip	ARMv8-M System Tick1	`arm,armv8m-systick`
Timer	on-chip	SiLabs Gecko BURTC timer1	`silabs,gecko-burtc`
Watchdog	on-chip	Silicon Labs Gecko Family Watchdog driver1 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
PA8	EUSART0_TX	UART Console TX
PA9	EUSART0_RX	UART Console RX
PB0	GPIO	Board Controller Enable
PB1	GPIO	Push Button 0
PB2	GPIO	LED0
PB3	GPIO	Push Button 1
PC1	EUSART1_TX	Display/Flash SPI MOSI
PC2	EUSART1_RX	Flash SPI MISO
PC3	EUSART1_CLK	Display/Flash SPI Clock
PC4	GPIO	Flash SPI Chip Select
PC5	I2C0_SCL	Si7021 I2C Clock
PC6	GPIO	Display COM Inversion
PC7	I2C0_SDA	Si7021 I2C Data
PC8	GPIO	Display SPI Chip Select
PC9	GPIO	Display/Si7021 Enable
PD3	GPIO	LED1

The default configuration can be found in boards/silabs/radio_boards/xg23_rb4210a/xg23_rb4210a_defconfig

System Clock

The EFR32ZG23 SoC is configured to use the 39 MHz external oscillator on the board.

Serial Port

The EFR32ZG23 SoC has one USART and three EUSARTs. USART0 is connected to the board controller and is used for the console.

Programming and Debugging

Flashing

Connect the BRD4002A board with a mounted BRD4210A radio module 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 xg23_rb4210a 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! xg23_rb4210a/efr32zg23b020f512im48