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boards: pimoroni: pico_plus2: Add Pimoroni Pico Plus2 board
Pinoroni Pico Plus2 is an RP2350B based board that has more rich I/O, RAM, and Flash than the original Raspberry Pi Pico2. Signed-off-by: TOKITA Hiroshi <[email protected]>
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‎boards/pimoroni/index.rst‎

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.. _boards-pimoroni:
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Pimoroni Ltd.
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#############
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.. toctree::
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:maxdepth: 1
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:glob:
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**/*

‎boards/pimoroni/pico_plus2/Kconfig.defconfig‎

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# Copyright (c) 2024 TOKITA Hiroshi
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# SPDX-License-Identifier: Apache-2.0
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if BOARD_PICO_PLUS2
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config USB_SELF_POWERED
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default n
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endif # BOARD_PICO_PLUS2

‎boards/pimoroni/pico_plus2/Kconfig.pico_plus2‎

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# Copyright (c) 2024 TOKITA Hiroshi
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# SPDX-License-Identifier: Apache-2.0
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config BOARD_PICO_PLUS2
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select SOC_RP2350B_M33 if BOARD_PICO_PLUS2_RP2350B_M33

‎boards/pimoroni/pico_plus2/board.cmake‎

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# SPDX-License-Identifier: Apache-2.0
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board_runner_args(openocd --cmd-pre-init "source [find interface/cmsis-dap.cfg]")
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board_runner_args(openocd --cmd-pre-init "source [find target/rp2350.cfg]")
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# The adapter speed is expected to be set by interface configuration.
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# The Raspberry Pi's OpenOCD fork doesn't, so match their documentation at
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# https://www.raspberrypi.com/documentation/microcontrollers/debug-probe.html#debugging-with-swd
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board_runner_args(openocd --cmd-pre-init "set_adapter_speed_if_not_set 5000")
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board_runner_args(uf2 "--board-id=RP2350")
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include(${ZEPHYR_BASE}/boards/common/openocd.board.cmake)
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include(${ZEPHYR_BASE}/boards/common/uf2.board.cmake)

‎boards/pimoroni/pico_plus2/board.yml‎

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board:
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name: pico_plus2
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full_name: Pimoroni Pico Plus2
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vendor: pimoroni
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socs:
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- name: rp2350b

‎boards/pimoroni/pico_plus2/doc/img/pico_plus2.webp‎

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‎boards/pimoroni/pico_plus2/doc/index.rst‎

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.. zephyr:board:: pico_plus2
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Overview
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********
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The `Pimoroni Pico Plus 2`_ is a compact and versatile board featuring the Raspberry Pi RP2350B SoC.
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It includes USB Type-C, Qwiic/STEMMA QT connectors, SP/CE connectors, a debug connector,
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a reset button, and a BOOT button.
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Hardware
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********
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- Dual Cortex-M33 or Hazard3 processors at up to 150MHz
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- 520KB of SRAM, and 4MB of on-board flash memory
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- 16MB of on-board QSPI flash (supports XiP)
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- 8MB of PSRAM
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- USB 1.1 with device and host support
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- Low-power sleep and dormant modes
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- Drag-and-drop programming using mass storage over USB
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- 48 multi-function GPIO pins including 8 that can be used for ADC
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- 2 SPI, 2 I2C, 2 UART, 3 12-bit 500ksps Analogue to Digital - Converter (ADC), 24 controllable PWM channels
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- 2 Timer with 4 alarms, 1 AON Timer
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- Temperature sensor
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- 3 Programmable IO (PIO) blocks, 12 state machines total for custom peripheral support
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- USB-C connector for power, programming, and data transfer
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- Qwiic/STEMMA QT(Qw/ST) connector
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- SP/CE connector
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- 3-pin debug connector, this can use with `Raspberry Pi Debug Probe`_.
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- Reset button and BOOT button (BOOT button also usable as a user switch)
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Supported Features
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==================
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The Pimoroni Pico Plus 2 supports the following hardware features:
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.. list-table::
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:header-rows: 1
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* - Peripheral
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- Kconfig option
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- Devicetree compatible
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* - NVIC
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- N/A
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- :dtcompatible:`arm,v8m-nvic`
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* - ADC
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- :kconfig:option:`CONFIG_ADC`
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- :dtcompatible:`raspberrypi,pico-adc`
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* - Clock controller
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- :kconfig:option:`CONFIG_CLOCK_CONTROL`
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- :dtcompatible:`raspberrypi,pico-clock-controller`
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* - Counter
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- :kconfig:option:`CONFIG_COUNTER`
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- :dtcompatible:`raspberrypi,pico-timer`
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* - DMA
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- :kconfig:option:`CONFIG_DMA`
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- :dtcompatible:`raspberrypi,pico-dma`
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* - GPIO
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- :kconfig:option:`CONFIG_GPIO`
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- :dtcompatible:`raspberrypi,pico-gpio`
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* - HWINFO
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- :kconfig:option:`CONFIG_HWINFO`
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- N/A
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* - I2C
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- :kconfig:option:`CONFIG_I2C`
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- :dtcompatible:`snps,designware-i2c`
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* - PWM
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- :kconfig:option:`CONFIG_PWM`
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- :dtcompatible:`raspberrypi,pico-pwm`
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* - SPI
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- :kconfig:option:`CONFIG_SPI`
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- :dtcompatible:`raspberrypi,pico-spi`
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* - UART
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- :kconfig:option:`CONFIG_SERIAL`
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- :dtcompatible:`raspberrypi,pico-uart`
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* - USB Device
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- :kconfig:option:`CONFIG_USB_DEVICE_STACK`
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- :dtcompatible:`raspberrypi,pico-usbd`
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* - Watchdog Timer (WDT)
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- :kconfig:option:`CONFIG_WATCHDOG`
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- :dtcompatible:`raspberrypi,pico-watchdog`
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You can use peripherals that are made by using the PIO.
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See :ref:`rpi_pico_pio_based_features`
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Programming and Debugging
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*************************
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The overall explanation regarding flashing and debugging is the same as or ``rpi_pico``.
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See :ref:`rpi_pico_flashing_using_openocd` and :ref:`rpi_pico_flashing_using_uf2`
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in ``rpi_pico`` documentation.
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.. zephyr-app-commands::
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:zephyr-app: samples/basic/blinky
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:board: pico_plus2
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:goals: build flash
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:gen-args: -DOPENOCD=/usr/local/bin/openocd
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.. target-notes::
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.. _Pimoroni Pico Plus 2:
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https://shop.pimoroni.com/products/pimoroni-pico-plus-2
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.. _Raspberry Pi Debug Probe:
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https://www.raspberrypi.com/documentation/microcontrollers/debug-probe.html

‎boards/pimoroni/pico_plus2/pico_plus2-pinctrl.dtsi‎

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/*
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* Copyright (c) 2024 TOKITA Hiroshi
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr/dt-bindings/pinctrl/rpi-pico-rp2350b-pinctrl.h>
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&pinctrl {
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uart0_default: uart0_default {
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group1 {
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pinmux = <UART0_TX_P0>;
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};
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group2 {
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pinmux = <UART0_RX_P1>;
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input-enable;
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};
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};
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i2c0_default: i2c0_default {
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group1 {
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pinmux = <I2C0_SDA_P4>, <I2C0_SCL_P5>;
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input-enable;
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input-schmitt-enable;
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};
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};
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spi0_default: spi0_default {
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group1 {
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pinmux = <SPI0_CSN_P17>, <SPI0_SCK_P18>, <SPI0_TX_P19>;
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};
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group2 {
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pinmux = <SPI0_RX_P16>;
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input-enable;
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};
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};
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pwm_ch4b_default: pwm_ch4b_default {
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group1 {
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pinmux = <PWM_4B_P25>;
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};
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};
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adc_default: adc_default {
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group1 {
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pinmux = <ADC_CH0_P40>, <ADC_CH1_P41>, <ADC_CH2_P42>, <ADC_CH3_P43>;
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input-enable;
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};
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};
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};

‎boards/pimoroni/pico_plus2/pico_plus2.dtsi‎

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/*
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* Copyright (c) 2024 TOKITA Hiroshi
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <freq.h>
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#include <zephyr/dt-bindings/i2c/i2c.h>
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#include <zephyr/dt-bindings/pwm/pwm.h>
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#include <zephyr/dt-bindings/input/input-event-codes.h>
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#include "pico_plus2-pinctrl.dtsi"
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/ {
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chosen {
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zephyr,sram = &sram0;
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zephyr,flash = &flash0;
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zephyr,console = &uart0;
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zephyr,shell-uart = &uart0;
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zephyr,code-partition = &code_partition;
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};
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aliases {
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watchdog0 = &wdt0;
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led0 = &led0;
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pwm-led0 = &pwm_led0;
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sw0 = &user_sw;
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};
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leds {
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compatible = "gpio-leds";
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led0: led_0 {
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gpios = <&gpio0 25 GPIO_ACTIVE_HIGH>;
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label = "LED";
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};
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};
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pwm_leds {
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compatible = "pwm-leds";
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status = "disabled";
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pwm_led0: pwm_led_0 {
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pwms = <&pwm 9 PWM_MSEC(20) PWM_POLARITY_NORMAL>;
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label = "PWM_LED";
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};
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};
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buttons {
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compatible = "gpio-keys";
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user_sw: user_sw {
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gpios = <&gpio0_hi 13 (GPIO_ACTIVE_LOW)>;
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zephyr,code = <INPUT_KEY_0>;
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};
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};
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pico_header: connector {
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compatible = "raspberrypi,pico-header";
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#gpio-cells = <2>;
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gpio-map-mask = <0xffffffff 0xffffffc0>;
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gpio-map-pass-thru = <0 0x3f>;
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gpio-map = <0 0 &gpio0 0 0>, /* GP0 */
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<1 0 &gpio0 1 0>, /* GP1 */
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<2 0 &gpio0 2 0>, /* GP2 */
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<3 0 &gpio0 3 0>, /* GP3 */
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<4 0 &gpio0 4 0>, /* GP4 */
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<5 0 &gpio0 5 0>, /* GP5 */
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<6 0 &gpio0 6 0>, /* GP6 */
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<7 0 &gpio0 7 0>, /* GP7 */
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<8 0 &gpio0 8 0>, /* GP8 */
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<9 0 &gpio0 9 0>, /* GP9 */
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<10 0 &gpio0 10 0>, /* GP10 */
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<11 0 &gpio0 11 0>, /* GP11 */
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<12 0 &gpio0 12 0>, /* GP12 */
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<13 0 &gpio0 13 0>, /* GP13 */
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<14 0 &gpio0 14 0>, /* GP14 */
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<15 0 &gpio0 15 0>, /* GP15 */
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<16 0 &gpio0 16 0>, /* GP16 */
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<17 0 &gpio0 17 0>, /* GP17 */
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<18 0 &gpio0 18 0>, /* GP18 */
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<19 0 &gpio0 19 0>, /* GP19 */
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<20 0 &gpio0 20 0>, /* GP20 */
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<21 0 &gpio0 21 0>, /* GP21 */
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<22 0 &gpio0 22 0>, /* GP22 */
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<26 0 &gpio0 26 0>, /* GP26 */
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<27 0 &gpio0 27 0>, /* GP27 */
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<28 0 &gpio0 28 0>; /* GP28 */
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};
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};
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&flash0 {
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reg = <0x10000000 DT_SIZE_M(16)>;
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partitions {
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compatible = "fixed-partitions";
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#address-cells = <1>;
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#size-cells = <1>;
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/* Reserved memory for an image definition block. The block is much
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* smaller than 256 bytes, but in practice the linker places the vector
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* table at a much larger alignment offset.
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*/
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image_def: partition@0 {
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label = "image_def";
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reg = <0x00000000 0x100>;
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read-only;
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};
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/*
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* Usable flash. Starts at 0x100, after the image definition block.
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* The partition size is 16MB minus the 0x100 bytes taken by the
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* image definition.
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*/
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code_partition: partition@100 {
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label = "code-partition";
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reg = <0x100 (DT_SIZE_M(16) - 0x100)>;
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read-only;
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};
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};
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};
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&uart0 {
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current-speed = <115200>;
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status = "okay";
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pinctrl-0 = <&uart0_default>;
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pinctrl-names = "default";
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};
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gpio0_lo: &gpio0 {
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status = "okay";
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};
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&gpio0_hi {
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status = "okay";
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};
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&spi0 {
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clock-frequency = <DT_FREQ_M(8)>;
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pinctrl-0 = <&spi0_default>;
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pinctrl-names = "default";
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status = "okay";
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};
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&i2c0 {
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clock-frequency = <I2C_BITRATE_STANDARD>;
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pinctrl-0 = <&i2c0_default>;
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pinctrl-names = "default";
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status = "okay";
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};
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&adc {
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pinctrl-0 = <&adc_default>;
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pinctrl-names = "default";
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status = "okay";
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};
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&pwm {
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pinctrl-0 = <&pwm_ch4b_default>;
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pinctrl-names = "default";
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divider-int-0 = <255>;
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};
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&timer0 {
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status = "okay";
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};
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zephyr_udc0: &usbd {
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status = "okay";
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};
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pico_spi: &spi0 {};
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pico_i2c0: &i2c0 {};
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pico_i2c1: &i2c1 {};
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pico_serial: &uart0 {};
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stemma_qt_i2c: &i2c0 {};

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