0

CircuitPython 4.0.0 Beta 2 released!

From the GitHub release page:

This is a beta build of 4.0.0. There are still issues to fix before stable and the new APIs may evolve a bit more. Please use the latest 3.x stable release when first starting with CircuitPython. It is stable.

When you find a bug please check the current known issues and file an issue if something isn’t already known.

4.0.0

4.0.0 is the latest major revision of CircuitPython and features support for the nRF52840 BLE chipset and translated messages.

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).

Most builds are available as both UF2 and bin files here along with test builds.

New Features, Updates, and Fixes since Beta 1

  • nrf: Add touchio support to nRF52840 using a 1mOhm drain resistor. Thanks to @nickzoic
  • nrf: Improve USB and BLE coexistence. Thanks to @hathach
  • displayio changes. Thanks to @tannewt
    • Adds serial output to displays when they are available.
    • Replaces Sprite with TileGrid which is more generic.
    • Display now manages the backlight brightness. To change it manually do display.auto_brightness = False and then set display.brightness with a value 0 to 1.0.
    • Add support for display rotation.
  • Enables FATFS fast seek to slightly improve file read times. Thanks to @tannewt

New Boards

Breaking Changes from 3.x!

  • busio.UART breaking changes to match PySerial. Thanks to @dhalbert
    • busio.UART constructor timeout parameter is now in seconds instead of milliseconds
    • UART.readinto(buf) now does not allow an optional length parameter UART.readinto(buf, len)
    • UART.write(…) no longer allows strings to be written. The bytes written must be bytes or bytearray or an array.array.
  • framebuf has been removed. displayio is its replacement, and will be enhanced after 4.0 to include framebuf‘s functionality.
  • Improve struct compatibility with CPython by enforcing stricter types. This may break your code! Thanks to @dhalbert

Known Issues

None

Thanks

Thank you to all who used, tested, contributed, helped out, and participated on GitHub and/or Discord:
@ladyada, @dhalbert, @tannewt, @kattni, @microbuilder, @hathach, @arturo182, @nickzoic, @glennrub, @siddacious, @deshipu, @sommersoft, @jerryneedell, @brentru, @caternuson, @jepler, @urish, @sajattack, @notro, @Jahor, @Makdaam, @mrmcwethy, @jepler, @notro, @mattyt, @furlaneto, @ATMakersBill, @Klowner, @klardotsh, @C47D, @carlosperate, @platipo, @xpecex, @gcvasconcelos, @saspa, @uhrheber, @nickzoic, @sabas1080, @sajattack, @JoshuaLowe1002, @Senuros, @mchobby, @Retoc, @CedarGroveStudios, @bwshockley, @yeyeto2788, @jimblom, @rhooper, @ShawnHymel, @TG-Techie, @eighthree, @arofarn, @chalei, @vgoodwinv, @gpshead, @dsiee, @Tasm-Devil, @larsks, @CarlFK, @edspark and surely more we have missed. Join us on the Discord chat to collaborate.

Documentation

Documentation is available in readthedocs.io.

Here are all the changes since 4.0.0-beta.1.
Here are all the changes since 3.1.2.

This release is based on MicroPython 1.9.4 @25ae98f. Support upstream MicroPython by purchasing a PyBoard (from Adafruit here).

Troubleshooting

Check out this guide for info on common problems with CircuitPython. If you are still having, then post to the Adafruit Support Forums and join Discord.


Please vote for Limor Fried (Ladyada) for Red Hat’s Women in Open Source Award
Our Ladyada (Limor Fried) was nominated for Red Hat’s Women in Open Source Award! Please vote for her! Visit: https://www.redhat.com/en/about/women-in-open-source

Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, or even use Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for MakeCode, CircuitPython, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.

Join 10,000+ makers on Adafruit’s Discord channels and be part of the community! http://adafru.it/discord

CircuitPython 2019!

Have an amazing project to share? Join the SHOW-AND-TELL every Wednesday night at 7:30pm ET on Google+ Hangouts.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Follow Adafruit on Instagram for top secret new products, behinds the scenes and more https://www.instagram.com/adafruit/


Maker Business — The strange world of low-margin online returns

Wearables — Liquid magic

Electronics — Diamonds may be forever… but components? Not so much.

Biohacking — Raspberry Pi Health Dashboard

Python for Microcontrollers — Python on hardware, a portal to a world of fun! #Python #Adafruit #CircuitPython @circuitpython @micropython @ThePSF @Adafruit

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !



No Comments

No comments yet.

Sorry, the comment form is closed at this time.