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.

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

The xg23_rb4210a board supports the runners and associated west commands listed below.

flash debug

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