This is a 5.0.0 Release Candidate — please test
This is release 5.0.0-rc.1 (Release candidate 1). If this release does not have show-stopper issues, it will be re-released as 5.0.0, the first 5.x.x stable release.
5.0.0 is the latest major revision of CircuitPython. It features many improvements and enhancements to
displayio, including grayscale OLED and e-paper displays, extensive additions and improvements to BLE support, support for the STM32F4, iMX RT10xx and Sony Spresense microcontroller families, and PWM audio support.
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, Updates, and Fixes Since 5.0.0-rc.0
- Fix I2C clock speed on i.MX boards. Thanks @mubes.
adafruit_esp32spilibraries into mimxrt1011 builds to save RAM. Thanks @arturo182.
Other board-specific fixes
- Arduino M0 boards now have both
.uf2downloads available. Thanks @dhalbert, and thanks to @fgallaire for pointing out the issue.
- Release download links available at https://circuitpython.org/downloads now point to AWS S3 instead of to GitHub release assets. Thanks @dhalbert, @jwcooper, and @sommersoft.
Find downloads for all boards, including these, at https://circuitpython.org/downloads.
New Since 5.0.0-rc.0
Breaking Changes and Deprecations from 4.x
- 5.0.0 improves our internal filesystem definitions and may overwrite your existing files so make sure to back them up before updating!
bleiomodule has been renamed to
_bleioto indicate that it is meant to be used only for writing BLE libraries, and that its API may change between CircuitPython minor versions. There are many incompatible changes in
_bleiosince 4.0.0. Please use the latest
adafruit_blelibrary for end-user BLE programming.
displayiorefresh API has been revamped to be simpler.
refresh_soonhave been removed. In both 4.x and 5.x, auto refresh will automatically refresh the display so they can be removed. The new
refresh()function can be used to control when the screen refreshes and at a specific rate.
audiomixer.Mixer, which is only available on M4s. Moved
audioio.WaveFileto the new module
audiocore. However, for backwards compatibility, they are still available in
audioio. They will be removed from
audioioin 6.0.0. Thanks @jepler.
stop=arg which will be removed in 6.x. Use
refrom CircuitPlayground Express Display build.
gamepadfrom CircuitPlayground Express Crickit build.
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, helped out, and participated on GitHub and/or Discord, including @arturo182, @bmeisels, @DavePutz, @dhalbert, @fgallaire, @hierophect, @jamesbowman, @jepler, @ladyada, @lgnashold, @maholli, @makermelissa, @mubes, @neubauek, @pdp7, @rhooper, @tannewt, @ATMakersBill, @AndrewTribble, @Anne B, @Antonio, @CGrover, @CarlFK, @Curt Olson, @Dar, @DaveP, @DavidGlaude, @DudeImOnly6, @Duewester, @KingerNorth, @SouthernDragon, @TG-Techie, @ThomasAtBBTF, @adafruit, @anecdata, @brentru, @cater, @charlesburnaford, @codeNSolder, @deshipu, @dherrada, @diegoMini+, @ednl, @foamyguy, @geekguy, @graham, @hexthat, @jasonp, @jerryn, @kattni, @kjw, @madbodger, @marius_450, @mscosti, @ntoll, @siddacious, @sommersoft, @stargirl, @timvictor, @v923z and surely more we have missed. Join us on the Discord chat to collaborate.
Documentation is available in readthedocs.io.
Here are all the changes since 5.0.0-rc.0.