adafruit/circuitpython 10.3.0-alpha.2

CircuitPython 10.3.0-alpha.2

on GitHub

This is CircuitPython 10.3.0-alpha.2, an alpha release for 10.3.0. Further features, changes, and bug fixes will be added before the final release of 10.3.0.

Highlights of this release

• Fix crashes on certain boards with integral displays.
• Adafruit MagTag 2025: improve display quality and support new display variant.
• Add CIRCUITPY_SDCARD_USB to settings.toml to control visibility of a mounted SD card on USB.
• Support float values in settings.toml.
• Report USB MSC drives as removable media to the host.
• Update ESP-IDF to v6.0.1.
• Fix audiomixer.Mixer regressions on SAMx5x.
• STM: support audio.AudioOut, using DAC.

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 10.3.0-alpha.1

Fixes and enhancements

• Adafruit MagTag 2025: improve display quality. #11003, #11001. Thanks @mikeysklar.
• Update frozen libraries. #10998. Thanks @dhalbert.
• Fix crashes on boards with FourWire displays with no reset pin. #10997, #10995. Thanks @dhalbert.
• Add CIRCUITPY_SDCARD_USB to settings.toml to control SD card USB presentation. #10996. Thanks @dhalbert.
• Add support for float values in settings.toml. #10975. Thanks @dhalbert.
• Report USB MSC drives as removable media to the host. #10967. Thanks @mikeysklar.

Port and board-specific changes

Analog Devices

Broadcom

Espressif

• Fix WiFi/BLE crashes after ESP-IDF v6.0.1 upgrade. #11004. Thanks @tannewt.
• Preserve alarm.sleep_memory across software resets. #10989, #10899. Thanks @lzr
• Support ESP32-P4 V1. #10986. Thanks @tannewt.
• Update ESP-IDF to v6.0.1. #10922. Thanks @tannewt.

i.MX

Nordic

renode

RP2

SAMx

• Fix audiomixer.Mixer regressions on SAMx5x. #10906. Thanks @relic-se.

SiLabs

Spresense

STM

• Support audio.AudioOut, using DAC. #10976. Thanks @ChrisNourse.

Zephyr

Individual boards

• Adafruit MagTag 2025: improve display quality, support new display variant. #11003, #10992, #10987. Thanks @mikeysklar.
• Unexpected Maker S3 D series: add board.ANTENNA_SWITCH (board.IO41). #10984. Thanks @JonNelson.

Documentation changes

Build and infrastructure changes

Translation additions and improvements

• Thanks for translations:
  • @cyphra (Spanish)

New boards

• Adafruit P4GPIO. #10986. Thanks @tannewt.
• Espressif ESP32-P4X-Function-EV. #11004. Thanks @tannewt.
• NHB Systems JL401-S3. #10997, #10977. Thanks @NHBSystems.

Known issues

• 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://github.com/adafruit/circuitpython/issues 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.