SiWx917 Wi-Fi 6 and Bluetooth LE SoC 8 MB Flash Radio Board (SLWRB4338A)

Overview

The SiWx917-RB4338A (aka BRD4338A) radio board provides support for the Silicon Labs SiWG917 SoC. This board cannot be used stand-alone and requires a a Wireless Pro Kit Mainboard (Si-MB4002A aka BRD4002A), for power, debug options etc.

This board might be sold as a part of the SiWx917-PK6031A bundle (“SiWx917 Wi-Fi 6 and Bluetooth LE 8 MB Flash Pro Kit”), which includes the BRD4002A Mainboard in addition of the BRD4338A.

SiWG917 is an ultra-low power SoC that includes hardware support for Single-Band Wi-Fi 6 + Bluetooth LE 5.4, Matter…

Hardware

For more information about the SiWG917 SoC and BRD4338A board, refer to these documents:

Supported Features

The siwx917_rb4338a 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.

`siwx917_rb4338a/siwg917m111mgtba` target

Type	Location	Description	Compatible
CPU	on-chip	ARM Cortex-M4F CPU1	`arm,cortex-m4f`
Bluetooth	on-chip	Bluetooth HCI on Silabs boards1	`silabs,siwx91x-bt-hci`
Clock control	on-chip	Clocks embedded on Silabs SiWx91x chips1	`silabs,siwx91x-clock`
DMA	on-chip	Silabs SiWx91x DMA node2	`silabs,siwx91x-dma`
Flash controller	on-chip	Silicon Labs SiWx91x flash controller1	`silabs,siwx91x-flash-controller`
GPIO & Headers	on-chip	Silabs SiWx91x GPIO2	`silabs,siwx91x-gpio`
	on-chip	Silabs SiWx91x GPIO Port5	`silabs,siwx91x-gpio-port`
	on-chip	Silabs SiWx91x UULP (ultra ultra low power) GPIO Port1	`silabs,siwx91x-gpio-uulp`
I2C	on-chip	Synopsys DesignWare I2C1 2	`snps,designware-i2c`
Input	on-board	Group of GPIO-bound input keys1	`gpio-keys`
Interrupt controller	on-chip	ARMv7-M NVIC (Nested Vectored Interrupt Controller)1	`arm,v7m-nvic`
LED	on-board	Group of GPIO-controlled LEDs1	`gpio-leds`
MTD	on-chip	Flash node1	`soc-nv-flash`
MTD	on-board	Fixed partitions of a flash (or other non-volatile storage) memory1	`fixed-partitions`
Pin control	on-chip	The Silabs SiWx91x pin controller is a devicetree node tasked with selecting the proper IO function for a given pin1	`silabs,siwx91x-pinctrl`
PWM	on-chip	Silabs siwx91x PWM Controller1	`silabs,siwx91x-pwm`
RNG	on-chip	Hardware Random Number Generator embedded on Silabs SiWx91x chips1	`silabs,siwx91x-rng`
Sensors	on-board	Silicon Labs Si7006 Humidity and Temperature Sensor1	`silabs,si7006`
Serial controller	on-chip	ns16550 UART1 2	`ns16550`
SRAM	on-chip	Generic on-chip SRAM description1	`mmio-sram`
Timer	on-chip	ARMv7-M System Tick1	`arm,armv7m-systick`
Watchdog	on-chip	Silabs SiWx91x Watchdog node1	`silabs,siwx91x-wdt`
Wi-Fi	on-chip	Silabs SiWx91x SoC WiFi1	`silabs,siwx91x-wifi`

Programming and Debugging

Flashing

Applications for the siwx917_rb4338a board can be built in the usual way. The flash method requires on Simplicity Commander installed on the host.

Then, connect the BRD4002A board with a mounted BRD4338A 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 siwx917_rb4338a 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! siwx917_rb4338a

Debugging

Debuggning relies on JLink tool. JLink is not able to flash the firmware. So debug session has to be done in two steps. west flash will flahs the firmware using Simplicity Commander. Then west attach will use JLink to attach to the board. The Zephyr image may has already booted when user runs west attach. User may execute monitor reset in the gdb prompt to reset the board.