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Overview

boards/adafruit/itsybitsy_rp2040/doc/index.rst

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.. zephyr:board:: adafruit_itsybitsy_rp2040

Overview

The Adafruit Itsybitsy RP2040_ board is based on the RP2040 microcontroller from Raspberry Pi Ltd. It is compatible with the Itsybitsy board form factor, and has a USB micro B connector.

Hardware

  • Microcontroller Raspberry Pi RP2040, with a max frequency of 133 MHz
  • Dual ARM Cortex M0+ cores
  • 264 kByte SRAM
  • 8 Mbyte QSPI flash
  • 12 GPIO pins
  • 4 ADC pins
  • SWDIO and SWCLK pins for programming and debugging
  • I2C
  • SPI
  • UART
  • USB micro B connector
  • Reset and boot buttons
  • Red LED
  • RGB LED (Neopixel)

Default Zephyr Peripheral Mapping

.. rst-class:: rst-columns

- A0 ADC0 : GPIO26
- A1 ADC1 : GPIO27
- A2 ADC2 : GPIO28
- A3 ADC3 : GPIO29
- D24: GPIO24
- D25: GPIO25
- SCK SPI0 SCK : GPIO18
- MO SPI0 MOSI : GPIO19
- MI SPI0 MISO : GPIO20
- D2 : GPIO12
- ENABLE : -
- SWDIO : -
- SWCLK : -
- D3 : GPIO5
- D4 : GPIO4
- RX UART0: GPIO1
- TX UART0: GPIO0
- SDA I2C1 : GPIO2
- SCL I2C1 : GPIO3
- D5 (5 Volt digital out): GPIO14
- D7 : GPIO6
- D9 : GPIO7
- D10 : GPIO8
- D11 : GPIO9
- D12 : GPIO10
- D13 and red LED : GPIO11
- Button USBBOOT : GPIO13
- RGB LED (Neopixel) signal : GPIO17
- RGB LED (Neopixel) power : GPIO16

See also pinout_ and schematic_.

Supported Features

.. zephyr:board-supported-hw::

Programming and Debugging

.. zephyr:board-supported-runners::

By default programming is done via the USB connector. Press and hold the BOOT button, and then press the RST button, and the device will appear as a USB mass storage unit. Building your application will result in a :file:build/zephyr/zephyr.uf2 file. Drag and drop the file to the USB mass storage unit, and the board will be reprogrammed.

It is also possible to program and debug the board via the SWDIO and SWCLK pins. Then a separate programming hardware tool is required, and for example the :command:openocd software is used. Typically the OPENOCD and OPENOCD_DEFAULT_PATH values should be set when building, and the --runner openocd argument should be used when flashing. For more details on programming RP2040-based boards, see :ref:rpi_pico_programming_and_debugging.

Flashing

To run the :zephyr:code-sample:blinky sample:

.. zephyr-app-commands:: :zephyr-app: samples/basic/blinky/ :board: adafruit_itsybitsy_rp2040 :goals: build flash

Try also the :zephyr:code-sample:hello_world, :zephyr:code-sample:led-strip, :zephyr:code-sample:input-dump, :zephyr:code-sample:usb-cdc-acm-console and :zephyr:code-sample:adc_dt samples.

References

.. target-notes::

.. _Adafruit Itsybitsy RP2040: https://learn.adafruit.com/adafruit-itsybitsy-rp2040

.. _pinout: https://learn.adafruit.com/adafruit-itsybitsy-rp2040/pinouts

.. _schematic: https://learn.adafruit.com/adafruit-itsybitsy-rp2040/downloads