WeAct RP2350B Core

Board Overview

WeAct RP2350B Core

Name:

rp2350b_core

Vendor:

WeAct Studio

Architecture:

arm, riscv

SoC:

rp2350b

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Overview

The WeAct RP2350B Core is a barebone development board for the RP2350B microcontroller by raspberry pi. It supports running code on either a single Cortex-M33 or a Hazard3 (RISC-V) core.

As with other RP2 boards, there’s no support for running any code on the second core.

Hardware

• Dual Cortex-M33 or Hazard3 processors at up to 150MHz

• 520KB of SRAM, and 16MB of on-board flash memory

• 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_core Schematics

Supported Features

The rp2350b_core 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_core/rp2350b/hazard3 target

Type	Location	Description	Compatible
ADC	on-chip	Raspberry Pi Pico ADC1	raspberrypi,pico-adc
Clock control	on-chip	The representation of Raspberry Pi Pico’s clock112	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 timer11	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
I2C	on-chip	Raspberry Pi Pico I2C2	raspberrypi,pico-i2c
Input	on-board	Group of GPIO-bound input keys1	gpio-keys
Interrupt controller	on-chip	Hazard3 interrupt controller1	hazard3,hazard3-intc
LED	on-board	Group of GPIO-controlled LEDs1	gpio-leds
	on-board	Group of PWM-controlled LEDs1	pwm-leds
Miscellaneous	on-chip	Raspberry Pi Pico PIO3	raspberrypi,pico-pio
MTD	on-chip	Flash node1	soc-nv-flash
	on-board	Fixed partitions of a flash (or other non-volatile storage) memory1	fixed-partitions
Pin control	on-chip	Raspberry Pi Pico Pin Controller1	raspberrypi,pico-pinctrl
PWM	on-chip	Raspberry Pi Pico PWM1	raspberrypi,pico-pwm
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 UART11	raspberrypi,pico-uart
SPI	on-chip	Raspberry Pi Pico SPI11	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_core/rp2350b/m33 target

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 clock112	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 timer11	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
I2C	on-chip	Raspberry Pi Pico I2C2	raspberrypi,pico-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
	on-board	Group of PWM-controlled LEDs1	pwm-leds
Miscellaneous	on-chip	Raspberry Pi Pico PIO3	raspberrypi,pico-pio
MTD	on-chip	Flash node1	soc-nv-flash
	on-board	Fixed partitions of a flash (or other non-volatile storage) memory1	fixed-partitions
Pin control	on-chip	Raspberry Pi Pico Pin Controller1	raspberrypi,pico-pinctrl
PWM	on-chip	Raspberry Pi Pico PWM1	raspberrypi,pico-pwm
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 UART11	raspberrypi,pico-uart
SPI	on-chip	Raspberry Pi Pico SPI11	raspberrypi,pico-spi
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

Connections and IOs

• Blue LED on pin 25.

• User button 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.

Programming and Debugging

The rp2350b_core board supports the runners and associated west commands listed below.

	flash	debug	rtt	attach	debugserver
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.

Below is an example of building and flashing the Blinky application.

# From the root of the zephyr repository
west build -b rp2350b_core/rp2350b/m33 samples/basic/blinky
west flash -r uf2