CircuitPython 10.2.1 Released!

From the GitHub release page:

This is CircuitPython 10.2.1, a bugfix revision of CircuitPython, and is a new stable release.

Highlights of this release

• Fix crashes on certain boards with integral displays.
• Adafruit MagTag 2025: improve display quality and support new display variant.

Download from circuitpython.org

Firmware downloads are available from the downloads page on circuitpython.org. The site makes it easy to select the correct file and language for your board.

Installation

To install follow the instructions in the Welcome to CircuitPython! guide. To install the latest libraries, see this page in that guide.

Try code.circuitpython.org or the latest version of the Mu editor for creating and editing your CircuitPython programs and for easy access to the CircuitPython serial connection (the REPL).

Documentation

Documentation is available in readthedocs.io.

Port status

CircuitPython has a number of “ports” that are the core implementations for different microcontroller families. Stability varies on a per-port basis. As of this release, these ports are consider stable (but see Known Issues below):

• atmel-samd: Microchip SAMD21, SAMx5x
• cxd56: Sony Spresense
• espressif: Espressif ESP32, ESP32-C2, ESP32-C3, ESP32-C6, ESP32-C61, ESP32-H2, ESP32-S2, ESP32-S3
• nordic: Nordic nRF52840, nRF52833
• raspberrypi: Raspberry Pi RP2040, RP2350
• stm: ST STM32F4 chip family

These ports are considered alpha and will have bugs and missing functionality:

• analog: Analog Devices MAX32690
• broadcom: Raspberry Pi boards such as RPi 4, RPi Zero 2W
• espressif: , ESP32-P4
• litex: fomu
• mimxrt10xx: NXP i.MX RT10xxx
• renode: hardware simulator
• silabs: Silicon Labs MG24 family
• stm: ST non-STM32F4 chip families
• zephyr: multiplatform RTOS, running on multiple chip families

Changes since 10.2.0

Fixes and enhancements

• Update frozen modules. #11001. Thanks @dhalbert.
• Fix crashes on boards with FourWire displays with no reset pin. #10995. Thanks @dhalbert.

Port and board-specific changes

Analog Devices

Broadcom

Espressif

i.MX

Nordic

renode

RP2

SAMx

SiLabs

Spresense

STM

Zephyr

Individual boards

• Adafruit MagTag 2025: improve display quality, support new display variant. #11002, #11000,. Thanks @mikeysklar.

Documentation changes

Build and infrastructure changes

Translation additions and improvements

New boards

• NHB Systems JL401-S3. #10977. Thanks @NHBSystems.

Known issues

• ESP32-C6 has problems.
• The CIRCUITPY drive is not working on at least some STM32 boards.
• Native-code .mpy files are not working. This capability is currently enabled only on the winterbloom_sol board.
• See https://ift.tt/ow4L1zM for other issues, including issues still to be addressed for:
  • 10.2.x
  • 10.x.x
  • 11.0.0
  • long term

Thanks

Thank you to all who used, tested, and contributed toward this release, including the contributors above, and many others on GitHub and Discord. Join us on the Discord chat to collaborate.

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