adafruit/circuitpython 7.2.1

CircuitPython 7.2.1

on GitHub

This is CircuitPython 7.2.1, the latest bugfix revision of CircuitPython, and is a new stable release.

Notable fixes to 7.2.1 since 7.2.0

• Espressif I2C pull-up detection fix.
• SAMD21 auto-reload reliability. In addition, for auto-reloads on any board, the program will stop more quickly, and will wait 0.75 seconds (was 0.5 seconds) after the last filesystem write before restarting.
• Update known certificates.
• Fix countio problems when used outside of code.py.
• Add from __future__ import annotations to allow program compatibility with CPython.

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 7.2.0

Fixes and enhancements

• Update certificates. #6139 (backport of #6097). Thanks @FoamyGuy and @dhalbert.
• Add do-nothing from __future__ import annotations. #6137 (backport of #6117). Thanks @dhalbert.

Port and board-specific changes

Espressif

• Fix I2C pull-up detection. #6129. Thanks @prplz.

SAMD

• Make countio.Counter be long-lived, for implementation reasons. #6138 (backport of #6106). Thanks @DavePutz and @dhalbert.
• SAMD21: Auto-reload was not working reliably. #6142, #6132. Thanks @dhalbert.

New boards since 7.2.0

• (none)

Known issues

• See https://github.com/adafruit/circuitpython/issues for other issues, including issues still to be addressed for 7.x.x.

Thanks

Thank you to all who used, tested, and contributed since 7.2.0, including the contributors above, and many others on GitHub and Discord. Join us on the Discord chat to collaborate.