CircuitPython 6.1.0-rc.1 is the second release candidate of CircuitPython 6.1.0. See Port status below for details on port stability, and Known Issues for known problems. If you find any issues with this release, please file an issue. If no significant issues are found within a few days, we’ll release this version as stable.
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.
Installation
To install follow the instructions in our new 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).
Port status
CircuitPython has a number of “ports” that are the core implementation for a variety of microcontroller families. Stability varies on a per-port basis. As of this release, atmel-samd
, nrf
, and stm
for the F4 family are stable. cxd56
, esp32s2
, and stm
for other chip families are being actively improved but may be missing functionality and have bugs. litex
and mimxrt10xx
are in an alpha state and will have bugs and missing functionality.
Changes since 6.1.0 Release Candidate 0
Fixes and enhancements
- Update
ulab
to version 1.6.1. #3972. Thanks @jepler. - Use double-quotes in initial
code.py
program. #3973. Thanks @kattni. - Add
len(alarm.sleep_memory)
andbool(alarm.sleep_memory)
. #3958. Thanks @dhalbert. - Add native support for
msgpack
. #3659. Thanks @iot49.
Board- and port-specific changes
- atmel-samd and nrf: Tick counter was being truncated when copied. #3939. Thanks @dhalbert.
- atmel-samd:
- Use correct TCC resolution for
PWMOut
. #3960. Thanks @dhalbert. - Use correct channel for
AnalogOut
. #3966. Thanks @dhalbert.
- Use correct TCC resolution for
- nrf:
- Fix BLE timeout check for
start_scan()
. Round float BLE timing values instead of truncating. #3942, #2930. Thanks @dhalbert. - Don’t check length on
gattc
write for remote characteristics or descriptors. #3993. Thanks @dhalbert.
- Fix BLE timeout check for
- MagTag:
- add accelerometer interrupt pin. #3940. Thanks @caternuson.
- Add
board.A1
as (preferred) name for `board.AD1. #4001. Thanks @dhalbert.
- ESP32-S2:
- Implement
I2SAudioOut
. #3733. Thanks @jepler. - Convert README to
.rst
. #3945. Thanks @2bndy5. - Correct data length for
socket.recvfrom_into()
. #3955. Thanks @caiokat. - Add
sys.platform
. #3954. Thanks @anecdata. - FeatherS2: Use DotStar for status LED. #3930. Thanks @jerryneedell.
- Add
network.authmode
. #3944. Thanks @BennyE. - Add debug logging for all WiFi events; remove unneeded WiFi setup call. #3903. Thanks @anecdata.
- Reduce power consumption when
TouchAlarm
not in use; allow multipleTouchAlarm
pins. #3969. Thanks @microDev1.
- Implement
- TG-Watch: Multiple revisions, including frozen modules. #3991. Thanks @TG-Techie.
Build and infrastructure changes
- Pass
DEBUG
make flag into code withCIRCUITPY_DEBUG
preprocessor macro. #3957. Thanks @dhalbert. - Shrink some German builds that no longer fit. #3983. Thanks @dhalbert.
- ESP32-S2: Fix
make flash
. #3982. Thanks @jepler. - Add
robots.txt
so search engines won’t crawl obsolete documentation in ReadTheDocs. #3291. Thanks @dhalbert. - Bump key for GitHub Actions cache to avoid bad cached data. #3997. Thanks @dhalbert.
- Update
uzlib
to version 2.9.5, used in unix build. #4002. Thanks @jepler. - Fix parallel build problem for unix build. #4004. Thanks @jepler.
Documentation
- Translation additions and improvements. Thanks:
- @wtuemura (Brazilian Portugese)
- @HugoDahl (French)
- @BumblebeeMan (German)
New boards since 6.1.0 Release Candidate 0
- Adafruit Feather ESP32-S2 mini module with and without TFT display. #3959. Thanks @ladyada.
- Adafruit NeoPixel Trinkey. #3978. Thanks @ladyada.
Full commit log is here.
Breaking changes since 5.x
i2cslave
is nowi2cperipheral
and the class in it is changed as well.- The
stop
kwarg has been removed fromI2C.writeto()
. If no stop is desired, then usewriteto_then_readfrom
. - The default speed of busio.I2C and board.I2C is now 100khz, not 400khz as before. Use
busio.I2C
to set the speed explicitly. #3471 Thanks @caternuson, @ladyada, @hierophect and @tannewt _bleio.ConnectionError
has be removed. Code will now raise the nativeConnectionError
instead.
Known issues
- ESP32-S2: Crash when repeatedly creating and destroying busio.I2C object on ESP32-S2. #3846.
- Built-in
adafruit_bus_device
has been disabled due to issues (#3859, #3856), please install the version from the Library Bundle - Writing several larger files to
CIRCUITPY
when there is no serial connection to the board can take a long time or hang. To speed up copying, open a serial (REPL) connection. #3986. - See https://github.com/adafruit/circuitpython/issues for other issues.
Thanks
Thank you to all who used, tested, and contributed since 6.1.0 Release Candidate 0, including @2bndy5, @anecdata, @BennyE, @BumblebeeMan, @caiokat, @caternuson, @dhalbert, @hugodahl, @jepler, @jerryneedell, @kattni, @ladyada, @microDev1, @sommersoft, @tannewt, @TG-Techie, @weblate, @wtuemura, and many others on Discord. Join us on the Discord chat to collaborate.
Documentation
Documentation is available in readthedocs.io.
This release is based on MicroPython 1.9.4 @25ae98f. Support upstream MicroPython by purchasing a PyBoard (from Adafruit here) or sponsoring MicroPython on GitHub.
Translations
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!
Troubleshooting
Check out this guide for info on common problems with CircuitPython. If you are still having issues, then post to the Adafruit Support Forums and join Discord.
Assets
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.