adafruit/circuitpython 10.0.0-alpha.2 on GitHub

This is CircuitPython 10.0.0-alpha.2, an alpha release for 10.0.0. Further features, changes, and bug fixes will be added before the final release of 10.0.0.

Highlights of this release

tilepalettemapper.TilePaletteMapper now supports displayio.ColorConverter.

Incompatibility warnings

synthio.BlockBiquad has been renamed to synthio.Biquad. The old deprecatedsynthio.Biquad has been removed, as well as synthio.Synthesizer.low_pass_filter, synthio.Synthesizer.high_pass_filter, and synthio.Synthesizer.band_pass_filter. Coefficients from biquad_filter_state have been moved into synthio_biquad (biquad_filter_state is still used for input and output state).
The displayio bindings deprecated in 9.x.x have been removed:
- busdisplay.BusDisplay replaces displayio.Display.
- fourwire.FourWire replaces displayio.Fourwire.
- epaperdisplay.EPaperDisplay replaces displayio.EPaperDisplay.
- i2cdisplaybus.I2CDisplayBus replaces displayio.I2CDisplay.
os.uname().sysname and os.uname().nodename now are set to MICROPY_HW_MCU_NAME uniformly across all ports.
watchdog.WatchDogTimer.deinit() is removed.

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-S2, ESP32-S3, ESP32-C2, ESP32-C3, ESP32-C6
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: testing with nRF5340, nRF54L15, RA6M5, STM32H7

Changes

This release also includes fixes and changes through CircuitPython 9.2.7.

Fixes and enhancements

synthio.BlockBiquad is renamed to synthio.Biquad, and replaces the old deprecated synthio.Biquad. #10213. Thanks @relic-se.
Add lvfontio.OnDiskFont to upport on-disk fonts for terminalio. #10208. Thanks @tannewt.
Update TinyUSB. Close device endpoints as needed. #10194. Thanks @tannewt.
Remove deprecated displayio bus bindings. #10193. Thanks @dhalbert.
tilepalettemapper.TilePaletteMapper now supports displayio.ColorConverter. #10173. Thanks @FoamyGuy.
Use MICROPY_HW_MCU_NAME for os.uname().sysname and nodename for all ports. #10145. Thanks @eightycc.
Remove watchdog.WatchDogTimer.deinit(). #10144. Thanks @eightycc.

Port and board-specific changes

Analog Devices

Broadcom

Espressif

i.MX

Nordic

renode

RP2

Fix USB host issues. #10221. Thanks @tannewt.
Force critical-section enter/exit routines to be in RAM instead of flash. #10219. Thanks @tannewt.

SAMx

SiLabs

Spresense

STM

Zephyr

Individual boards

STM32F412G_DISCO: fix typo in chip name. #10150. Thanks @page200.
WIZnet-5100S-EVB-Pico, EVB-Pico2, W5500 Pico2: normalize pin names and default devices. #10199. Thanks @fasteddy516.

Documentation changes

Build and infrastructure changes

Fix version determination for multi-digit version numbers. #10216. Thanks @tannewt.
CIRCUITPY_FULL_BUILD now controls more language features, for uniformity. #10152. Thanks @dhalbert.
Add pin validation to a manual USB test. #10148. Thanks @FoamyGuy.

Translation additions and improvements

New boards

WIZnet W5500-EVB-Pico2. #10179. Thanks @fasteddy516.

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.

adafruit/circuitpython 10.0.0-alpha.2 CircuitPython 10.0.0-alpha.2 on GitHub