.. zephyr:board:: xiao_rp2350

Overview

The XIAO RP2350 is an IoT mini development board from Seeed Studio. It is equipped with an RP2350A SoC, an on-board WS2812 addressable LED, and USB connector. The USB bootloader allows it to be flashed without any adapter, in a drag-and-drop manner.

For more details see the Seeed Studio XIAO RP2350_ wiki page.

Hardware

The Seeed Studio XIAO RP2350 is a low-power microcontroller that carries the powerful Dual-core RP2350A processor with a flexible clock running up to 133 MHz. There is also 264KB of SRAM, and 2MB of on-board Flash memory.

There are 14 GPIO pins on Seeed Studio XIAO RP2350, on which there are 11 digital pins, 3 analog pins, 11 PWM Pins, 1 I2C interface, 1 UART interface, 1 SPI interface, 1 SWD Bonding pad interface. There are 8 GPIO pins on PCB bottom side as test pads with additional 8 digital pins for secondary interfaces, 1 I2C, 1 UART, 1 SPI.

Supported Features

.. zephyr:board-supported-hw::

Pin Mapping

The peripherals of the RP2350A SoC can be routed to various pins on the board. The configuration of these routes can be modified through DTS. Please refer to the datasheet to see the possible routings for each peripheral.

Default Zephyr Peripheral Mapping:

.. rubric:: primary and secondary interfaces

.. rst-class:: rst-columns

UART0_TX : P0
UART0_RX : P1
I2C1_SDA : P6
I2C1_SCL : P7
SPI0_CS : P5 (GPIO)
SPI0_RX : P4
SPI0_TX : P3
SPI0_SCK : P2
UART1_TX : P20
UART1_RX : P21
I2C0_SDA : P16
I2C0_SCL : P17
SPI1_CS : P9 (GPIO)
SPI1_SCK : P10
SPI1_RX : P11
SPI1_TX : P12

Connections and IOs

The board uses a standard XIAO pinout on edge connectors and additional XIAO test pads on bottom side of the PCB. The Seeed Studio XIAO RP2350_ wiki has detailed information about the board, including pinouts_ and schematic_.

Programming and Debugging

.. zephyr:board-supported-runners::

Flashing

Using UF2

You can flash the Xiao RP2350 with a UF2 file. By default, building an app for this board will generate a :file:build/zephyr/zephyr.uf2 file. If the Xiao RP2350 is powered on with the BOOTSEL button pressed, it will appear on the host as a mass storage device. The UF2 file should be copied to the device, which will flash the Xiao RP2350.

References

.. target-notes::

.. _Seeed Studio XIAO RP2350: https://wiki.seeedstudio.com/getting-started-xiao-rp2350/ .. _pinouts: https://wiki.seeedstudio.com/getting-started-xiao-rp2350/#hardware-overview .. _schematic: https://wiki.seeedstudio.com/getting-started-xiao-rp2350/#assets--resources