Waveshare RP2350B Plus W

Overview

The Waveshare RP2350B Plus W is a barebone development board built around the Raspberry Pi RP2350B microcontroller. It supports running code on either a single Cortex-M33 core or a Hazard3 (RISC-V) core, and includes wireless connectivity through the Raspberry Pi RM2 module (Wi-Fi and Bluetooth).

Hardware

Dual Cortex-M33 or Hazard3 processors at up to 150MHz
520KB of SRAM, and 16MB of on-board flash memory
Wireless connectivity via the Raspberry Pi RM2 module (2.4 GHz Wi-Fi and Bluetooth 5.2)
USB 1.1 with device and host support
Low-power sleep and dormant modes
Drag-and-drop programming using mass storage over USB
48 multi-function GPIO pins including 8 that can be used for ADC
2 SPI, 2 I2C, 2 UART, One 12-bit 500ksps Analogue to Digital - Converter (ADC) with 8 channels, 24 controllable PWM channels
2 Timer with 4 alarms, 1 AON Timer
Temperature sensor
3 Programmable IO (PIO) blocks, 12 state machines total for custom peripheral support
rp2350b_plus_w Schematics

Supported Features

The rp2350b_plus_w 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.

`rp2350b_plus_w/rp2350b/hazard3_0` target

On-target memory for this board target: 520 KiB of RAM, 16 MiB of Flash.

Type	Location	Description	Compatible
CPU	on-chip	Generic RISC-V CPU2	`riscv`
ADC	on-chip	Raspberry Pi Pico ADC1	`raspberrypi,pico-adc`
Clock control	on-chip	The representation of Raspberry Pi Pico’s clock11 2	`raspberrypi,pico-clock`
	on-chip	The representation of Raspberry Pi Pico’s PLL2	`raspberrypi,pico-pll`
	on-chip	The representation of Raspberry Pi Pico ring oscillator1	`raspberrypi,pico-rosc`
	on-chip	The representation of Raspberry Pi Pico external oscillator1	`raspberrypi,pico-xosc`
	on-chip	Raspberry Pi Pico clock controller node1	`raspberrypi,pico-clock-controller`
Counter	on-chip	Raspberry Pi Pico timer1 1	`raspberrypi,pico-timer`
Cryptographic accelerator	on-chip	Raspberry Pi Pico SHA-256 accelerator1	`raspberrypi,pico-sha256`
DMA	on-chip	Raspberry Pi Pico DMA1	`raspberrypi,pico-dma`
Flash controller	on-chip	Raspberry Pi Pico flash controller1	`raspberrypi,pico-flash-controller`
GPIO & Headers	on-chip	Raspberry Pi Pico GPIO1	`raspberrypi,pico-gpio`
GPIO & Headers	on-chip	Raspberry Pi Pico GPIO Port2	`raspberrypi,pico-gpio-port`
I2C	on-chip	Raspberry Pi Pico I2C2	`raspberrypi,pico-i2c`
Interrupt controller	on-chip	Hazard3 interrupt controller1	`hazard3,hazard3-intc`
LED	on-board	Group of GPIO-controlled LEDs1	`gpio-leds`
Mailbox	on-chip	Raspberry Pi Pico interprocessor mailbox1	`raspberrypi,pico-mbox`
Miscellaneous	on-chip	Raspberry Pi Pico POWMAN (power manager)1	`raspberrypi,pico-powman`
	on-chip	Raspberry Pi Pico PIO3	`raspberrypi,pico-pio`
	on-chip	Raspberry Pi Pico SIO1	`raspberrypi,pico-sio`
MTD	on-chip	Flash node1	`soc-nv-flash`
Pin control	on-chip	Raspberry Pi Pico Pin Controller1	`raspberrypi,pico-pinctrl`
PWM	on-chip	Raspberry Pi Pico PWM1	`raspberrypi,pico-pwm`
Regulator	on-chip	Raspberry Pi Pico core supply regurator1	`raspberrypi,core-supply-regulator`
Reset controller	on-chip	Raspberry Pi Pico Reset Controller1	`raspberrypi,pico-reset`
RNG	on-chip	Raspberry Pi Pico RNG/Entropy1	`raspberrypi,pico-rng`
Sensors	on-chip	Raspberry Pi Pico family temperature sensor node1	`raspberrypi,pico-temp`
Serial controller	on-chip	Raspberry Pi Pico UART1 1	`raspberrypi,pico-uart`
SPI	on-chip	Raspberry Pi Pico SPI1 1	`raspberrypi,pico-spi`
SRAM	on-chip	Generic on-chip SRAM1	`mmio-sram`
Timer	on-chip	RISC-V Machine Timer1	`riscv,machine-timer`
USB	on-chip	Raspberry Pi Pico USB Device Controller1	`raspberrypi,pico-usbd`
Watchdog	on-chip	Raspberry Pi Pico Watchdog1	`raspberrypi,pico-watchdog`

`rp2350b_plus_w/rp2350b/m33_0` target

On-target memory for this board target: 520 KiB of RAM, 16 MiB of Flash.

Type	Location	Description	Compatible
CPU	on-chip	ARM Cortex-M33 CPU2	`arm,cortex-m33`
ADC	on-chip	Raspberry Pi Pico ADC1	`raspberrypi,pico-adc`
Clock control	on-chip	The representation of Raspberry Pi Pico’s clock11 2	`raspberrypi,pico-clock`
	on-chip	The representation of Raspberry Pi Pico’s PLL2	`raspberrypi,pico-pll`
	on-chip	The representation of Raspberry Pi Pico ring oscillator1	`raspberrypi,pico-rosc`
	on-chip	The representation of Raspberry Pi Pico external oscillator1	`raspberrypi,pico-xosc`
	on-chip	Raspberry Pi Pico clock controller node1	`raspberrypi,pico-clock-controller`
Counter	on-chip	Raspberry Pi Pico timer1 1	`raspberrypi,pico-timer`
Cryptographic accelerator	on-chip	Raspberry Pi Pico SHA-256 accelerator1	`raspberrypi,pico-sha256`
DMA	on-chip	Raspberry Pi Pico DMA1	`raspberrypi,pico-dma`
Flash controller	on-chip	Raspberry Pi Pico flash controller1	`raspberrypi,pico-flash-controller`
GPIO & Headers	on-chip	Raspberry Pi Pico GPIO1	`raspberrypi,pico-gpio`
	on-chip	Raspberry Pi Pico GPIO Port2	`raspberrypi,pico-gpio-port`
	on-board	Infineon CYW43 GPIO controller1	`infineon,cyw43-gpio`
I2C	on-chip	Raspberry Pi Pico I2C2	`raspberrypi,pico-i2c`
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`
Mailbox	on-chip	Raspberry Pi Pico interprocessor mailbox1	`raspberrypi,pico-mbox`
Miscellaneous	on-chip	Raspberry Pi Pico POWMAN (power manager)1	`raspberrypi,pico-powman`
	on-chip	Raspberry Pi Pico PIO1 2	`raspberrypi,pico-pio`
	on-chip	Raspberry Pi Pico SIO1	`raspberrypi,pico-sio`
MTD	on-chip	Flash node1	`soc-nv-flash`
Pin control	on-chip	Raspberry Pi Pico Pin Controller1	`raspberrypi,pico-pinctrl`
PWM	on-chip	Raspberry Pi Pico PWM1	`raspberrypi,pico-pwm`
Regulator	on-chip	Raspberry Pi Pico core supply regurator1	`raspberrypi,core-supply-regulator`
Reset controller	on-chip	Raspberry Pi Pico Reset Controller1	`raspberrypi,pico-reset`
RNG	on-chip	Raspberry Pi Pico RNG/Entropy1	`raspberrypi,pico-rng`
Sensors	on-chip	Raspberry Pi Pico family temperature sensor node1	`raspberrypi,pico-temp`
Serial controller	on-chip	Raspberry Pi Pico UART1 1	`raspberrypi,pico-uart`
SPI	on-chip	Raspberry Pi Pico SPI1 1	`raspberrypi,pico-spi`
SPI	on-board	Raspberry Pi Pico SPI via PIO1	`raspberrypi,pico-spi-pio`
SRAM	on-chip	Generic on-chip SRAM1	`mmio-sram`
Timer	on-chip	ARMv8-M System Tick1	`arm,armv8m-systick`
USB	on-chip	Raspberry Pi Pico USB Device Controller1	`raspberrypi,pico-usbd`
Watchdog	on-chip	Raspberry Pi Pico Watchdog1	`raspberrypi,pico-watchdog`
Wi-Fi	on-board	AIROC Wi-Fi Connectivity1	`infineon,airoc-wifi`

Connections and IOs

Red LED on pin 23.
It is possible to add a second flash or a PSRAM chip to the back of the board. The CS is Pin 0. This is not currently supported in zephyr.

Wi-Fi Firmware Setup

Before building applications, you must fetch the required Wi-Fi firmware blobs.

Run the following command to download these blobs:

west blobs fetch hal_infineon

Note

It is recommended running the command above after west update.

This command downloads the necessary firmware files from Infineon’s repositories.

Programming and Debugging

The rp2350b_plus_w board supports the runners and associated west commands listed below.

	flash	debug	attach	debugserver	rtt	reset
jlink	✅	✅	✅	✅	✅	✅
openocd	✅ (default)	✅ (default)	✅	✅	✅
probe-rs	✅	✅		✅	✅
uf2	✅

The overall explanation regarding flashing and debugging is the same as for Raspberry Pi Pico. See Programming and Debugging in Raspberry Pi Pico documentation. N.b. OpenOCD support requires using Raspberry Pi’s forked version of OpenOCD.

After fetching the blobs, you can building and flashing the Wi-Fi shell application.

# From the root of the zephyr repository
west build -b rp2350b_plus_w/rp2350b/m33_0 samples/net/wifi/shell
west flash -r uf2