From the GitHub release page:
This is the first beta release of CircuitPython 5.4.0. This release adds basic lower power support when in
time.sleep(). The lower power work changed time keeping and may have introduced bugs. Please use 5.3.0 if you need a stable version of CircuitPython.
Download from circuitpython.org
Downloads are available from circuitpython.org! The site makes it easy to select the correct file and language for your board. The downloads page is here. Downloads are no longer available from the GitHub release pages because of the large number of files for each release.
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).
New features and improvements since 5.3.0
- Add sleep support while
time.sleep()on ports except CXD56 and LiteX. Thanks to @tannewt
ujson.loadcan now use mp_stream objects like
busio.UART. Thanks to @WarriorOfWire
rgbmatrixnow supported on STM32F4. Thanks to @jepler
aesioadded for C level AES. Thanks to @xobs
displayioenabled on STM32H7 boards. Thanks to @hierophect
- One directional SPI now supported on IMX RT. Thanks to @hierophect and @arturo182
- Added empty Swedish translations. (Try our new Weblate site to add and improve translations.) Thanks @jepler
_pixelbuf.colorwheelcolor order fixed. Thanks to @kattni
PacketBufferreliability improved. Thanks to @dhalbert
packet_sizeis deprecated in favor of
outpoing_packet_lengthadded so calling code can split input appropriately.
ulabupdated. Removed from
espruino_picodue to space. Thanks to @v923z and @jepler
pulseioenabled on STM32F7. Thanks to @k0d
- Pinout of Teknikio Bluebird pinout updated for newer rev. Thanks to @JoeBakalor
- Itaca uChip now has
.binfiles as well as
.uf2. Thanks to @mew-cx
- STATUS2 is no longer read for SPI Flashes with single status bytes. Thanks to @bd34n
- Doc fixes. Thanks to @rhooper and @spkuehl
Full commit log is here.
New boards since 5.3.0
- Teensy 4.1 Thanks to @tannewt
- Makerdairy Pitaya Go Thanks to @xiongyihui
- Simmel Thanks to @xobs
- Nordic PCA10100 Thanks to @xobs
- OpenMV H7 Thanks to @hierophect
- STM32F746 Nucleo Thanks to @k0d
- STM32F746 Discovery Thanks to @k0d
displayiooperations that read from an SD card (e.g.,
OnDiskBitmap) will interfere with other SD card operations and can cause lockup. To work around this problem, do not read or write files on the SD while the display is updating, and vice versa.
- See https://github.com/adafruit/circuitpython/issues for other issues.
Thank you to all who used, tested, contributed since 5.3.0, helped out, and participated on GitHub and/or Discord, including @arturo182, @bd34n, @DavePutz, @dhalbert, @hathach, @hierophect, @jepler, @JoeBakalor, @kattni, @k0d, @ladyada, @mew-cx, @rhooper, @spkuehl, @Teknikio, @theacodes, @TG-Techie, @v923z, @WarriorOfWire, @xiongyihui, @xobs and surely more we have missed. Join us on the Discord chat to collaborate.
Documentation is available in readthedocs.io.
One important feature of CircuitPython is translated control and error messages. With the help of fellow open source project Weblate, we’re making it even easier to add or improve translations. Sign in with an existing account such as Github, Google or Facebook and start contributing through a simple web interface. No forks or pull requests needed!
Builds are no longer stored as assets on this release page, because there are too many of them. Please see the Download from circuitpython.org section above.