.. zephyr:board:: rp2040_plus

Overview

RP2040-Plus, a low-cost, high-performance Pico-like MCU board based on Raspberry Pi microcontroller RP2040 including a battery charger.

Hardware

Dual core Arm Cortex-M0+ processor running up to 133MHz
264KB on-chip SRAM
4MB/16MB on-board QSPI flash with XIP capabilities
26 GPIO pins
3 Analog inputs
2 UART peripherals
2 SPI controllers
2 I2C controllers
16 PWM channels
USB 1.1 controller (host/device)
8 Programmable I/O (PIO) for custom peripherals
On-board LED
1 Watchdog timer peripheral
on-board battery charger

Supported Features

.. zephyr:board-supported-hw::

Pin Mapping

The peripherals of the RP2040 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.

.. figure:: img/rp2040_plus-details.webp :align: center :alt: Waveshare RP2040-Plus pinout overview

Default Zephyr Peripheral Mapping:

.. rst-class:: rst-columns

UART0_TX : P0
UART0_RX : P1
I2C0_SDA : P4
I2C0_SCL : P5
I2C1_SDA : P6
I2C1_SCL : P7
SPI0_RX : P16
SPI0_CSN : P17
SPI0_SCK : P18
SPI0_TX : P19
ADC_CH0 : P26
ADC_CH1 : P27
ADC_CH2 : P28

Programming and Debugging

.. zephyr:board-supported-runners::

Flashing

Using UF2

Here is an example of building the sample for driving the built-in led.

.. zephyr-app-commands:: :zephyr-app: samples/basic/blinky :board: rp2040_plus :goals: build :compact:

You must flash the RP2040-Plus with an UF2 file. One option is to use West (Zephyr’s meta-tool). To enter the UF2 flashing mode just keep the BOOT button pressed while you connect the USB port, it will appear on the host as a mass storage device. In alternative with the board already connected via USB you can keep the RESET button pressed, press and release BOOT, release RESET. At this point you can flash the image file by running:

.. code-block:: bash

west flash

Alternatively, you can locate the generated :file:build/zephyr/zephyr.uf2 file and simply drag-and-drop to the device after entering the UF2 flashing mode.

References

Official Documentation_

.. _Official Documentation: https://www.waveshare.com/wiki/RP2040-Plus