From the GitHub release page:
This is CircuitPython 9.2.0, the latest minor revision of CircuitPython, and is a new stable release.
WARNING for nRF52 boards only: If your board has an nRF52 UF2 bootloader whose version is before 0.6.1, you will not be able to load CircuitPython 8.2.0 and later, due to increased size of the firmware. See these instructions for updating your bootloader.
Highlights of this release
- Fix RP2350 cache invalidation for PSRAM.
Notable changes in 9.2.0 from 9.1.x
- Raspberry Pi RP2350 support.
- Update to Espressif ESP-IDF V5.3.1, including new I2C driver.
- Merge MicroPython updates from v1.22.2 and v1.23.
- Espressif BLE improvements.
- Add
math.dist()
. _eve
updates.- New
busio.I2C.probe()
andbitbangio.I2C.probe()
methods to check for a single device address. - ESP32-S3: implement
sdioio
. - New
audiodelays
andaudiofilters
modules. These modules are experimental, and the API may change. - Incompatible change: Change default hostname for all Espressif boards to the ESP-IDF default, which is
espressif
. - Incompatible change: Use default hostname for mDNS. Fix mDNS collision mangling.
Incompatibility warnings
- Change default hostname for all Espressif boards to the ESP-IDF default, which is
espressif
. Previous board-specific names were not applied consistently. Usewifi.radio.hostname
to set a custom hostname. - Use default hostname for mDNS. Fix mDNS collision mangling. DNS hostnames will be different.
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, SAMx5xcxd56
: Sony Spresenseespressif
: Espressif ESP32, ESP32-S2, ESP32-S3, ESP32-C2, ESP32-C3, ESP32-C6nordic
: Nordic nRF52840, nRF52833raspberrypi
: Raspberry Pi RP2040, RP2350stm
: 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 2Wespressif
: ESP32-P4 (currently no USB support)litex
: fomumimxrt10xx
: NXP i.MX RT10xxxrenode
: hardware simulatorsilabs
: Silicon Labs MG24 familystm
: ST non-STM32F4 chip families
Changes since 9.2.0-rc.0
Fixes and enhancements
Port and board-specific changes
Broadcom
Espressif
i.MX
nordic
renode
RP2
- Fix RP2350 cache invalidation for PSRAM. #9759. Thanks @dhalbert.
SAMx
SiLabs
Spresense
STM
Individual boards
Documentation changes
- Add note about different
_bleio
implementations. #9758. Thanks @dhalbert.
Build and infrastructure changes
- Remove version restrictions on Python
cryptography
library. #9757. Thanks @jepler.
Translation additions and improvements
New boards since 9.2.0-rc.0
Known issues
- See https://github.com/adafruit/circuitpython/issues for other issues, including issues still to be addressed for:
- Native-code .mpy files are not working. This capability is currently enabled only on the
winterbloom_sol
board.
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.