CircuitPython 7.3.0 Beta 1 Released! @circuitpython

From the GitHub release page:

This is CircuitPython 7.3.0-beta.1, the second published beta release for CircuitPython 7.3.0. It is relatively stable, but there will be further additions and fixes before final release.

Notable changes to 7.3.0 since 7.2.5

  • Experimental mDNS support.
  • USB to to Serial/JTAG support for REPL on appropriate boards.
  • Initial experimental USB host support.
  • Merge MicroPython 1.18 changes.
  • Preliminary zlib module support. gzip module will be added later.
  • PIO: wrap and wrap_target support.
  • keypad: scan keystates immediately on creation.

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 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:

  • atmel-samd: Microchip SAMD21, SAMx5x
  • cxd56: Sony Spresense
  • espressif: Espressif ESP32-S2
  • nrf: Nordic nRF52840, nRF52833
  • raspberrypi: Raspberry Pi RP2040
  • stm: ST STM32F4 chip family

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

  • broadcom: Raspberry Pi boards such as RPi 4, RPi Zero 2W
  • espressif: ESP32-S3, ESP32-C3
  • litex: fomu
  • mimxrt10xx: NXP i.MX RT10xxx
  • stm: ST non-STM32F4 chip families

Changes since 7.3.0-beta.0

Fixes and enhancements

  • Refactor keypad to share more code. Scan key states immediately when created. #6248. Thanks @jepler.
  • Fix use of internal flash filesystem stubs. #6226. Thanks @EmergReanimator.x
  • All changes in 7.2.5: includes ESP32-S2 I2C power (#6103), MP3Decoder looping (#6230), nRF PWM fix (#6233), RP2040 UART fixes (#6240, #6238). #6234. Thanks @jepler.
  • Add zlib module, specifically zlib.decompress(). #6069. Thanks @gamblor21.

Port and board-specific changes

Broadcom

Espressif

  • Disable pull-up when AnalogIn constructed; allows faster reading of high-impedance sources. #6246. Thanks @dhalbert and @DavePutz.
  • Support rotaryio divisor changes. #6207. Thanks @domdfcoding.

nRF

RP2040

  • Add support for PIO .wrap and `.wrap_target pseudo-operations. #6029. Thanks @jepler.

SAMx

  • Fix time jumping around on RTC overflow boundaries. #6202. Thanks @jepler.

STM

Individual boards

  • Adafruit MagTag: Don’t reset board.BATTERY; allows prompt AnalogIn use. #6246. Thanks @DavePutz.
  • Espressif ESP32-S3 USB OTG N8: add board.DISPLAY. #6222. Thanks @todbot.
  • iLabs Challenger 840: Add support for 4MB flash. #6251. Thanks @PontusO.

Documentation changes

  • Document TileGrid tile value range limitation of 0-255. #6245. Thanks @jepler.
  • Improve MP3Decoder documentation. #6245. Thanks @jepler.

Build and infrastructure changes

  • Fix clang build warnings. #6231. Thanks @jepler.
  • click and typer version pinning and then reversion, to fix temporary build issues. #6224, #6210. Thanks @jepler and @dhalbert.

Translation additions and improvements

  • Fix Russian typo. #6253. Thanks @jepler.

New boards since 7.3.0-beta.0

  • (none)

Known issues

  • See https://github.com/adafruit/circuitpython/issues for other issues, including issues still to be addressed for:

Thanks

Thank you to all who used, tested, and contributed since 7.3.0-beta.0, including the contributors above, and many others on GitHub and Discord. Join us on the Discord chat to collaborate.

Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7:30pm ET! To join, head over to YouTube and check out the show’s live chat and our Discord!

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Tags: — by Dan Halbert

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