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Overview

boards/raspberrypi/rpi_pico2/doc/index.rst

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.. zephyr:board:: rpi_pico2

Overview

The Raspberry Pi Pico 2 and Pico 2W are second-generation products in the Raspberry Pi Pico family. From the Raspberry Pi website <https://www.raspberrypi.com/documentation/microcontrollers/pico-series.html>_ is referred to as Pico 2.

The Pico 2 supports running code on either a single Cortex-M33 or a Hazard3 (RISC-V) core.

As with the Pico 1, 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 4MB 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

  • 26 multi-function GPIO pins including 3 that can be used for ADC

  • 2 SPI, 2 I2C, 2 UART, 3 12-bit 500ksps Analogue to Digital - Converter (ADC), 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

  • Infineon CYW43439 2.4 GHz Wi-Fi chip (Pico 2W only)

    • Flexible, user-programmable high-speed IO
    • Can emulate interfaces such as SD Card and VGA

Supported Features

.. zephyr:board-supported-hw::

Connections and IOs

The default pin mapping is unchanged from the Pico 1 (see :ref:rpi_pico_pin_mapping).

Programming and Debugging

.. zephyr:board-supported-runners::

The overall explanation regarding flashing and debugging is the same as for :zephyr:board:rpi_pico. See :ref:rpi_pico_programming_and_debugging in :zephyr:board:rpi_pico documentation. N.b. OpenOCD support requires using Raspberry Pi's forked version of OpenOCD.

Below is an example of building and flashing the :zephyr:code-sample:blinky application.

.. zephyr-app-commands:: :zephyr-app: samples/basic/blinky :board: rpi_pico2/rp2350a/m33 :goals: build flash :flash-args: --openocd /usr/local/bin/openocd

The blinky sample is not yet supported on Pico 2W, so try the :zephyr:code-sample:wifi-shell application to connect to the network.

Wi-Fi Firmware Setup

Before building applications for the Pico 2W variant, you must fetch the required Wi-Fi firmware blobs. The Infineon CYW43439 chip requires proprietary firmware and CLM (Country Localization Module) files.

Run the following command to download these blobs:

.. code-block:: console

west blobs fetch hal_infineon

This command downloads the necessary firmware files from Infineon's repositories, including:

  • 43439A0.bin - Wi-Fi firmware for CYW43439
  • 43439A0.clm_blob - Country localization data

You only need to run this command once per workspace. Without these blobs, the build will fail with CMake errors about missing firmware files.

Building Wi-Fi Applications

After fetching the blobs, you can build Wi-Fi applications:

.. zephyr-app-commands:: :zephyr-app: samples/net/wifi/shell :board: rpi_pico2/rp2350a/m33/w :goals: build flash :flash-args: --openocd /usr/local/bin/openocd

References

.. target-notes::