CircuitPython 10.2.0 Released!

From the GitHub release page:

This is CircuitPython 10.2.0, a minor revision of CircuitPython, and is a new stable release.

Highlights of this release

• New audiotools.SpeedChanger.
• New qspibus support for displayio.
• Stability improvements to USB SD card handling.
• Merge of MicroPython v1.27.
• Update to ESP-IDF v5.5.3.
• Many additions to the Zephyr port.
• Simulated hardware testing is now being done in the Zephyr port.

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 10.1.4 and 10.2.0-alpha.1

Fixes and enhancements

• Fix web workflow background callback handling. #10966. Thanks @dhalbert.
• Fix sdcardio.SDCard regression that failed to init some cards. #10956. Thanks @dhalbert and @bablokb.
• Update frozen libraries. #10945, #10853, Thanks @dhalbert and @FoamyGuy.
• Merge MicroPython v1.27 into CircuitPython. #10931. Thanks @dhalbert.
• Fix palette length validation in _stage. #10904. Thanks @deshipu.
• Add audiotools.SpeedChanger. #10900. Thanks @todbot.
• Add mcp4822 SPI DAC support. #10895. Thanks @todbot.
• Improve USB SD presentation, sdcardio implementation, displayio bus sharing. #10887. Thanks @dhalbert.
• Add arg validations in various bitmaptools methods. #10884. Thanks @FoamyGuy.
• Merge 10.1.x fixes. #10877, #10839. Thanks @dhalbert.
• Fix handling of full-width glyphs in lvfontio. #10865. Thanks @FoamyGuy.
• Added displayio qspibus support. #10844. Thanks @ppsx.

Port and board-specific changes

Analog Devices

Broadcom

Espressif

• Change USB task priority to be the same as the CircuitPython task. #10887. Thanks @dhalbert.
• Fix BLE startup crash. #10858. Thanks @tannewt.
• Update to ESP-IDF 5.5.3. #10840. Thanks @tannewt.

i.MX

Nordic

renode

RP2

• Fix i2ctarget bugs. #10933. Thanks @FoamyGuy.
• Fix i2ctarget start bug. #10474. Thanks @MarkEbrahim.

SAMx

SiLabs

Spresense

STM

• Move SPI deinit code to prevent crash. #10926. Thanks @ChrisNourse.

Zephyr

• Fix flash size on Feather RP240. #10960. Thanks @FoamyGuy.
• Enable jpegio, getpass, adafruit_bus_device, hashlib, zlib, aesio, msgpack. #10952, #10949, #10943, #10939, #10932, #10927. Thanks @FoamyGuy.
• Add nvm support. #10918. Thanks @tannewt.
• Add Adafruit Feather RP240. #10925. Thanks @FoamyGuy.
• Add Adafruit Feather nRF2840 Sense. #10923. Thanks @tannewt.
• Add Raspberry Pi Pico, Pico W, Pico2, Pico2 W. #10917. Thanks @tannewt.
• add audiobusio.I2SOut support. #10916. Thanks @tannewt.
• Zephyr port and build fixes. #10912, #10911, #10863, #10860, #10859. Thanks @tannewt.
• Allow building and uploading native_sim .exe. #10897. Thanks @tannewt.
• Add heap statistics tracking to native_sim. #10869. Thanks @tannewt.
• Add zephyr_display to support fixed Zephyr displays. #10868. Thanks @tannewt.
• Implement _bleio scanning, advertising, connect, and disconnect. #10862, #10833. Thanks @tannewt.
• Add TCP neworking support. #10847. Thanks @tannewt.
• Test simulated hardware using perfetto traces. #10846. Thanks @tannewt.
• Handle time simulation without using yields. #10834. Thanks @tannewt.

Individual boards

• Adafruit QT Py ESP32-S3 4/2 and 8/0: reduce default WiFi power to 15 dBm. #10921. Thanks @jesseadams.
• Cytron Maker Pi RP2040: add GP29 pin definitions. #10893. Thanks @CytronTechnologies.
• uGame S3: slow down SPI to avoid display glitches. #10837. Thanks @deshipu.

Documentation changes

• Fix typo in tim.monotonic_ns(). #10950. Thanks @tannewt.
• Explain SD card initialization more thoroughly. #10962, #10947. Thanks @mikeysklar.
• Correct return type in busio.I2C.probe(). #10891. Thanks @FoamyGuy.

Build and infrastructure changes

• Update CI actions to Node.24 versions. #10910. Thanks @dhalbert.
• Fix ReadTheDocs build warnings. #10907. Thanks @dhalbert.
• Add support for user-supplied build configuration files: user_pre_mpconfigport.mk, user_post_mpconfigport.mk, user_post_circuitpy_defns.mk. #10817. Thanks @bablokb.

Translation additions and improvements

New boards

• Pimoroni Badger2350. #10929. Thanks @bablokb.
• Pimoroni Explorer RP2350. #10778. Thanks @tyeth.
• TinyCircuits Thumby and Thumby Color. #10851, #10303. Thanks @tannewt.
• Waveshare ESP32-S# Touch AMOLED 2.41″. #10844. Thanks @ppsx.
• WeAct Studio RP2350B Core. #10646. Thanks @cvmanjoo.
• Xteink X4. #10873. Thanks @BlitzCityDIY.

Known issues

• ESP32-C6 networking is not working well.
• 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/Z7CH2JT 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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