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 board configuration supports the following hardware features:
Interface |
Controller |
Driver/Component |
|---|---|---|
MPU |
on-chip |
memory protection unit |
NVIC |
on-chip |
nested vector interrupt controller |
SYSTICK |
on-chip |
systick |
COUNTER |
on-chip |
stimer |
FLASH |
on-chip |
flash memory |
GPIO |
on-chip |
gpio |
UART |
on-chip |
serial |
DMA |
on-chip |
ldma |
I2C |
on-chip |
i2c |
SPI |
on-chip |
spi |
TRNG |
on-chip |
semailbox |
WATCHDOG |
on-chip |
watchdog |
ACMP |
on-chip |
comparator |
Other hardware features are currently not supported by the port.
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