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CircuitPython 9.2.5

18 Mar 23:43
@dhalbert dhalbert
9.2.5
ed2ae0d
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CircuitPython 9.2.5

This is CircuitPython 9.2.5, the latest bugfix revision of CircuitPython, and is a new stable release.

WARNING for nRF52 boards only: If your board has an nRF52 UF2 bootloader whose version is before 0.6.1, you will not be able to load CircuitPython 8.2.0 and later, due to increased size of the firmware. See these instructions for updating your bootloader.

Highlights of this release

  • Update frozen modules.
  • Enable function attributes and reverse arithmetic operators on most boards.
  • displayio:
    • Add tilepalettemapper.
    • add VT100 escape code support for scrolling and colors.
  • synthio and audiodelays additions
  • Add audioio on Espressif.
  • Add spitarget on SAMx (enabled on most SAMx5x boards).
  • Initial work on a Zephyr port.
  • Bug fixes.

Incompatibility warnings

  • Uses of deprecated displayio bindings are now called out with warnings. For instance, displayio.Display is deprecated in favor of busdisplay.BusDisplay. In CircuitPython 10.0.0 the deprecated bindings will be 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

Fixes and enhancements

  • Update frozen modules. #10139. Thanks @dhalbert.
  • Enable warnings when using older displayio bindings deprecated in 9.x. #10137. Thanks @eightycc.
  • Enable function attributes and reverse arithmetic operators on most boards. #10134. Thanks @eightycc.
  • Add support for a Python-writable /saves partition in addition to CIRCUITPY. #10122. Thanks @tannewt.
  • Add tilepalettemapper for displayio. #10113. Thanks @FoamyGuy.
  • Add VT100 escape code scrolling in terminalio. #10110, #10108. Thanks @RetiredWizard.
  • Add VT100 escape codes for colors in terminalio. #10105. Thanks @RetiredWizard.
  • Check for empty SSID before attempting to start web workflow. #10103. Thanks @dhalbert.
  • Allow a CIRCUITPY_TERMINAL_SCALE value in settings.toml, to scale the terminalio display. #10099. Thanks @RetiredWizard.
  • Fix loading small monochrome OnDiskBitmaps. #10097. Thanks @SamantazFox.
  • Fix uses of m_realloc() and m_free when MICROPY_MALLOC_USES_ALLOCATED_SIZE is set. #10094. Thanks @SamantazFox.
  • Improve displayio.ColorConverter accuracy for 5:5:5-bit colors. #10076. Thanks @qutefox.
  • Add `supervisor.runtime.display. #10062. Thanks @jepler.
  • Restore console_uart_printf() internally; fix use of __ZEPHYR__. #10057. Thanks @eightycc.
  • Add audiodelays.PitchShift effect. #10052. Thanks @relic-se.
  • Fix CIRCUITPY_SERIAL_GUARDING in serial_early_init(). #10043. Thanks @eightycc.
  • Provide and use a a default __exit__() object, to save space. #10040. Thanks @jepler.
  • Reduce audio processing code size. #10036. Thanks @jepler.
  • Skip over unused data in WaveFiles. #10013. Thanks @MarshallMiller.
  • Add synthio.BlockBiquad enhanced biquad filter support. #9804. Thanks @jepler.

Port and board-specific changes

Analog Devices

Broadcom

Espressif

i.MX

Nordic

renode

RP2

SAMx

SiLabs

Spresense

STM

Zephyr

  • Add initial Zephyr port, which supports boards across multiple platforms. #10026. Thanks @tannewt.

Individual boards

Documentation changes

Build and infrastructure changes

Translation additions and improvements

New boards

Known issues

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.

Contributors

tannewt, karlosgliberal, and 24 other contributors
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CircuitPython 9.2.4

28 Jan 22:45
@dhalbert dhalbert
9.2.4
c3989b2
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CircuitPython 9.2.4

This is CircuitPython 9.2.4, the latest bugfix revision of CircuitPython, and is a new stable release.

WARNING for nRF52 boards only: If your board has an nRF52 UF2 bootloader whose version is before 0.6.1, you will not be able to load CircuitPython 8.2.0 and later, due to increased size of the firmware. See these instructions for updating your bootloader.

Highlights of this release

  • Update frozen modules, including a fix for adafruit_requests.
  • audiofilters: add Distortion and implement LFO ticking.
  • Add canio support for i.MX boards.
  • Fix RP2 picodvi crash.
  • Fix STM USB crashes.

Incompatibility warnings

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

Changes

Fixes and enhancements

  • Update frozen modules, including a fix for adafruit_requests. #10012. Thanks @dhalbert.
  • MP3Decoder can now handle 40-byte format headers. #10001. Thanks @marshalmiller.
  • audiofilters: add Distortion and implement LFO ticking. #9776. Thanks @relic-se.

Port and board-specific changes

Analog Devices

Broadcom

Espressif

i.MX

Nordic

renode

RP2

  • Fix regression re offset in rp2pio.StateMachine. #10010. Thanks @jepler.
  • Use newer PIO resource handling API. #9999. Thanks @jepler.
  • Better audio DMA error handling. #9989. Thanks @eightycc.
  • Fix picodvi crashes due to DMA handling regression. #9980. Thanks @dhalbert.

SAMx

SiLabs

Spresense

STM

Individual boards

  • Adafruit Metro RP2350: enable USB host by default. #10005. Thanks @jepler.
  • Adafruit Sparkle Motion: correct and add pin aliases. #9993. Thanks @BlitzCityDIY.
  • Spotpear ESP32C3 1.44" LCD: Use legacy 4MB layout to avoid bootloop due to _bleio enabling. #9997. Thanks @SeanTheITGuy.
  • Waveshare ESP32-C6 LCD 1.47": allow sharing of SPI bus. #9987. Thanks @bwshockley.

Documentation changes

  • Remove reference to long-obsolete audioio names. #10000. Thanks @jepler.

Build and infrastructure changes

  • Explicitly request board info in bug report template. #10008. Thanks @dhalbert.

Translation additions and improvements

New boards

Known issues

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.

Contributors

hathach, jepler, and 12 other contributors
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CircuitPython 9.2.3

17 Jan 19:02
@dhalbert dhalbert
9.2.3
b7af46b
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CircuitPython 9.2.3

This is CircuitPython 9.2.3, the latest bugfix revision of CircuitPython, and is a new stable release.

WARNING for nRF52 boards only: If your board has an nRF52 UF2 bootloader whose version is before 0.6.1, you will not be able to load CircuitPython 8.2.0 and later, due to increased size of the firmware. See these instructions for updating your bootloader.

Highlights of this release

  • Fix ESP32-S3 regression: did not connect properly to USB without an interposed hub.
  • New boards: Adafruit Sparkle Motion and Mini Sparkle Motion, M5Stack StampS3.

Incompatibility warnings

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

Changes

Fixes and enhancements

Port and board-specific changes

Analog Devices

Broadcom

Espressif

i.MX

Nordic

renode

RP2

SAMx

SiLabs

Spresense

STM

  • Prospective fix for STM32H7 crashes on recent builds. #9962, Thanks @snkYmkrct.

Individual boards

  • Waveshare Pico S3: fix status LED colors. #9949. Thanks @Neradoc.

Documentation changes

Build and infrastructure changes

  • Improvements to serial console startup and logging. #9964. Thanks @eightycc.
  • Fix version of setuptools_scm used for circuitpython-stubs. #9948. Thanks @jepler.
  • Find files with inline documentation using an inclusion instead of an exclusion list. #9947. Thanks @jepler.

Translation additions and improvements

  • Thanks for translations:
    • gfbdrgng (Russian)
    • @wtuemura (Portugese - Brazil)

New boards

Known issues

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.

Contributors

arturo182, hathach, and 10 other contributors
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CircuitPython 9.2.2

09 Jan 20:45
@dhalbert dhalbert
9.2.2
50726f5
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CircuitPython 9.2.2

This is CircuitPython 9.2.2, the latest bugfix revision of CircuitPython, and is a new stable release.

WARNING for nRF52 boards only: If your board has an nRF52 UF2 bootloader whose version is before 0.6.1, you will not be able to load CircuitPython 8.2.0 and later, due to increased size of the firmware. See these instructions for updating your bootloader.

Highlights of this release

  • int.from_bytes() and .to_bytes() calls can omit byteorder arg, as in CPython.
  • DemuxKeyMatrix: add scan delay, add columns_to_anodes and transpose args.
  • Implement audiomixer.MixerVoice.level as synthio.BlockInput.
  • displayio now supports 24-bit color depth.
  • Add sideset_pindirs to rp2pio.StateMachine.
  • rp2pio: support on GPIO pins 32 and up, available on RP2350B.
  • Initial implementation of audiobusio.PDMIn on Espressif.
  • Update Espressif ESP-IDF to v5.3.2, which supports ESP32-P4 v1.0 chips.
  • New ports/analog port, initially supporting Analog Devices ADI MAX32690 microcontroller.
  • Over 20 new boards.

Incompatibility warnings

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

Changes since 9.2.1

Fixes and enhancements

  • int.from_bytes() and .to_bytes() calls can omit byteorder arg, as in CPython. #9940. Thanks @dhalbert.
  • Discard line-clearing escape characters in web workflow serial stream. #9934. Thanks @Neradoc.
  • Fix self arg passed to @classmethod when accessed via super. #9926. Thanks @dhalbert and @dpgeorge (from MicroPython).
  • DemuxKeyMatrix: add scan delay, add columns_to_anodes and transpose args. #9912. Thanks @patricksurry.
  • Implement audiomixer.MixerVoice.level as synthio.BlockInput. #9899. Thanks @relic-se.
  • RGBMatrix speculative fix: added and removed. #9892, #9865. Thanks @jepler.
  • displayio: support 24-bit color depth. #9882. Thanks @ddrown.
  • MP3Decoder: prevent including old data in stream. #9866. Thanks @jepler.
  • Remove unneeded keyword arg handlers in audio classes property setters. #9864, #9862. Thanks @relic-se and @jepler.
  • Provide audiomixer.MixerVoice.loop property. #9861. Thanks @pdw-mb.
  • Fix vectorio rotation corner case. #9851. Thanks @FoamyGuy.

Port and board-specific changes

Analog Devices

  • New ports/analog port, initially supporting Analog Devices ADI MAX32690 microcontroller. #9667. Thanks @Brandon-Hurst.

Broadcom

Espressif

  • Add short delay after I2C bus probe to fix I2C bus scanning on ESP32-S2. #9942. Thanks @dhalbert.
  • Update Espressif ESP-IDF to v5.3.2, which supports ESP32-P4 v1.0 chips. #9928. Thanks @tannewt.
  • Use correct USB Device instance. #9889. Thanks @dhalbert.
  • ESP32-P4: USB support. #9889, #9841. Thanks @tannewt and @dhalbert.
  • Make alarm available on some boards where it was inadvertently omitted. #9881. Thanks @dhalbert.
  • Allow mbedtls data to be stored in PSRAM. #9867. Thanks @jepler.
  • Initial implementation of audiobusio.PDMIn. #9828. Thanks @JetForMe.

i.MX

Nordic

renode

RP2

  • Enable compiler warning that was disabled for gcc 10. #9942. Thanks @jepler.
  • rp2pio: support PIO on GPIO pins 32 and up, available on RP2350B. #9901. Thanks @jepler.
  • Better documentation for rp2pio types. #9885. Thanks @jepler.
  • Add sideset_pindirs to rp2pio.StateMachine. #9849. Thanks @jepler.
  • Update pico-sdk to version 2.1.0. #9831. Thanks @eightycc.

SAMx

SiLabs

Spresense

STM

Individual boards

Documentation changes

  • Document safe mode wait interval in README.rst. #9929. Thanks @pdw-mb.
  • Update usb_hid boot device documentation. #9836. Thanks @dhalbert.

Build and infrastructure changes

Translation additions and improvements

New boards since 9.2.1

Known issues

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.

Contributors

supcik, tannewt, and 30 other contributors
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CircuitPython 9.2.1

20 Nov 20:14
@dhalbert dhalbert
9.2.1
254f8ef
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CircuitPython 9.2.1

This is CircuitPython 9.2.1, the latest bugfix revision of CircuitPython, and is a new stable release.

WARNING for nRF52 boards only: If your board has an nRF52 UF2 bootloader whose version is before 0.6.1, you will not be able to load CircuitPython 8.2.0 and later, due to increased size of the firmware. See these instructions for updating your bootloader.

Highlights of this release

  • Additional synthio and audiofilters functionality.
  • I2CTarget and keys.*.reset() fixes.
  • RP2350: PSRAM and cpu.temperature fixes.
  • rp2pio: add background read operation.
  • Five new boards.

Incompatibility warnings

  • Raise TypeError when attempt to produce JSON for invalid types. Previously the types were serialized as strings.

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:

  • broadcom: Raspberry Pi boards such as RPi 4, RPi Zero 2W
  • espressif: ESP32-P4 (currently no USB support)
  • litex: fomu
  • mimxrt10xx: NXP i.MX RT10xxx
  • renode: hardware simulator
  • silabs: Silicon Labs MG24 family
  • stm: ST non-STM32F4 chip families

Changes since 9.2.0

Fixes and enhancements

  • Fix regression of keypad.*.reset() behavior. #9819. Thanks @aseanwatson and @dhalbert.
  • Add finaliser to I2CTarget to fix problems on soft retart. #9810. Thanks @dhalbert.
  • Raise TypeError when attempt to produce JSON for invalid types. #9789. Thanks @jepler.
  • Add synthio.BlockInput support to synthio.Note waveform loop parameters. #9788. Thanks @relic-se.
  • Supply silence when sample missing in audiofilters.Filter. #9787. Thanks @relic-se.
  • Force reboot to normal mode after storage.erase_filesystem(). #9786. Thanks @bill88t.
  • Add support for tuple of Biquad objects within audiofilters.Filter. #9772. Thanks @relic-se.
  • synthio: Add a form of biquad filter, BlockBiquad, that uses BlockInput. #9756. Thanks @jepler.

Port and board-specific changes

Broadcom

Espressif

i.MX

nordic

renode

RP2

SAMx

SiLabs

Spresense

STM

Individual boards

  • LILYGO T-Deck (Plus): improve port, add support for variant "Plus" functionality. #9815. Thanks @bill88t.
  • LILYGO TEMBED ESP32S3: fix display initialization sequence. #9650. Thanks @bytiful.
  • Meowbit: enabled gifio, and disable other modules unlikely to be used to make room. #9761. Thanks @dglaude.
  • Pimoroni Pico Plus 2: rework pin names. #9803. Thanks @bablokb.
  • WIZnet W5100S EVB Pico: Add ssl. #9791. Thanks @anecdata.

Documentation changes

Build and infrastructure changes

  • Make default unix variant be coverage. #9796. Thanks @jepler.
  • Add audiodelays and audioeffects to unix coverage port. #9793. Thanks @jepler.
  • Fix security issues in GitHub Actions found by zizmor. #9785. Thanks @jepler.
  • Check for proper gcc version when building. #9779. Thanks @jepler.
  • Enable vectorio in coverage build. #9766. Thanks @jepler.

Translation additions and improvements

New boards since 9.2.0

Known issues

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.

Contributors

sparkfun, jepler, and 17 other contributors
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CircuitPython 9.2.0

28 Oct 13:12
@dhalbert dhalbert
9.2.0
98cc153
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CircuitPython 9.2.0

This is CircuitPython 9.2.0, the latest minor revision of CircuitPython, and is a new stable release.

WARNING for nRF52 boards only: If your board has an nRF52 UF2 bootloader whose version is before 0.6.1, you will not be able to load CircuitPython 8.2.0 and later, due to increased size of the firmware. See these instructions for updating your bootloader.

Highlights of this release

  • Fix RP2350 cache invalidation for PSRAM.

Notable changes in 9.2.0 from 9.1.x

  • Raspberry Pi RP2350 support.
  • Update to Espressif ESP-IDF V5.3.1, including new I2C driver.
  • Merge MicroPython updates from v1.22.2 and v1.23.
  • Espressif BLE improvements.
  • Add math.dist().
  • _eve updates.
  • New busio.I2C.probe() and bitbangio.I2C.probe() methods to check for a single device address.
  • ESP32-S3: implement sdioio.
  • New audiodelays and audiofilters modules. These modules are experimental, and the API may change.
  • Incompatible change: Change default hostname for all Espressif boards to the ESP-IDF default, which is espressif.
  • Incompatible change: Use default hostname for mDNS. Fix mDNS collision mangling.

Incompatibility warnings

  • Change default hostname for all Espressif boards to the ESP-IDF default, which is espressif. Previous board-specific names were not applied consistently. Use wifi.radio.hostname to set a custom hostname.
  • Use default hostname for mDNS. Fix mDNS collision mangling. DNS hostnames will be different.

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:

  • broadcom: Raspberry Pi boards such as RPi 4, RPi Zero 2W
  • espressif: ESP32-P4 (currently no USB support)
  • litex: fomu
  • mimxrt10xx: NXP i.MX RT10xxx
  • renode: hardware simulator
  • silabs: Silicon Labs MG24 family
  • stm: ST non-STM32F4 chip families

Changes since 9.2.0-rc.0

Fixes and enhancements

Port and board-specific changes

Broadcom

Espressif

i.MX

nordic

renode

RP2

SAMx

SiLabs

Spresense

STM

Individual boards

Documentation changes

  • Add note about different _bleio implementations. #9758. Thanks @dhalbert.

Build and infrastructure changes

  • Remove version restrictions on Python cryptography library. #9757. Thanks @jepler.

Translation additions and improvements

New boards since 9.2.0-rc.0

Known issues

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.

Contributors

jepler and dhalbert
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CircuitPython 9.2.0-rc.0

23 Oct 20:07
@dhalbert dhalbert
9.2.0-rc.0
38779cd
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CircuitPython 9.2.0-rc.0 Pre-release
Pre-release

This is CircuitPython 9.2.0-rc.0, a release candidate for 9.2.0 final. This release is believed to be stable, and is meant for testing before the final release of 9.2.0.

WARNING for nRF52 boards only: If your board has an nRF52 UF2 bootloader whose version is before 0.6.1, you will not be able to load CircuitPython 8.2.0 and later, due to increased size of the firmware. See these instructions for updating your bootloader.

Highlights of this release

  • New audiodelays and audiofilters modules. These modules are experimental, and the API may change.
  • Bug fixes.

Notable changes in 9.2.0 from 9.1.x

  • Raspberry Pi RP2350 support.
  • Update to Espressif ESP-IDF V5.3.1, including new I2C driver.
  • Merge MicroPython updates from v1.22.2 and v1.23.
  • Espressif BLE improvements.
  • Add math.dist().
  • _eve updates.
  • New busio.I2C.probe() and bitbangio.I2C.probe() methods to check for a single device address.
  • ESP32-S3: implement sdioio.
  • New audiodelays and audiofilters modules. These modules are experimental, and the API may change.
  • Incompatible change: Change default hostname for all Espressif boards to the ESP-IDF default, which is espressif.
  • Incompatible change: Use default hostname for mDNS. Fix mDNS collision mangling.

Incompatibility warnings

  • Change default hostname for all Espressif boards to the ESP-IDF default, which is espressif. Previous board-specific names were not applied consistently. Use wifi.radio.hostname to set a custom hostname.
  • Use default hostname for mDNS. Fix mDNS collision mangling. DNS hostnames will be different.

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 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:

  • broadcom: Raspberry Pi boards such as RPi 4, RPi Zero 2W
  • espressif: ESP32-P4 (currently no USB support)
  • litex: fomu
  • mimxrt10xx: NXP i.MX RT10xxx
  • renode: hardware simulator
  • silabs: Silicon Labs MG24 family
  • stm: ST non-STM32F4 chip families

Changes since 9.2.0-beta.1

Fixes and enhancements

  • Fix default values for wifi.Radio.start_dhcp_client(). #9751. Thanks @dhalbert.
  • Add audiofilters module. #9744. Thanks @dcooperdalrymple.
  • Improve _bleio.Connection.bind() validation, error messages, and documentation. #9732. Thanks @dhalbert.
  • Add errno.EROFS and errno.ENOSPC. #9731. Thanks @dhalbert.
  • adafruit_pixelbuf: allow modifying transmit buffer to control brightness on TM1814 RGB strips. #9730. Thanks @jepler.
  • Fix keypad.ShiftRegisterKeys.key_count value. #9719. Thanks @dhalbert.
  • Add audiodelays module. #9640. Thanks @gamblor21.

Port and board-specific changes

Broadcom

Espressif

  • Disable hardware stack guard while crashes it causes are investigated. #9748. Thanks @dhalbert and MicroPython folks.
  • Disable ipv6 RDNSS: LWIP overwrites ipv4 DNS servers. #9713. Thanks @jepler.

i.MX

nordic

renode

RP2

SAMx

SiLabs

Spresense

STM

Individual boards

Documentation changes

Build and infrastructure changes

  • Update to use macos-12 and ubuntu-24.04 for CI runs. #9720. Thanks @dhalbert.
  • Support frozen modules that use a src/ directory. #9673. Thanks @bablokb.

Translation additions and improvements

New boards since 9.2.0-beta.1

Known issues

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.

Contributors

earlephilhower, tannewt, and 14 other contributors
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CircuitPython 9.2.0-beta.1

10 Oct 23:32
@dhalbert dhalbert
9.2.0-beta.1
81d0073
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CircuitPython 9.2.0-beta.1 Pre-release
Pre-release

This is CircuitPython 9.2.0-beta.1, a beta release for 9.2.0. It has known bugs that wil be fixed before the final release of 9.2.0.

WARNING for nRF52 boards only: If your board has an nRF52 UF2 bootloader whose version is before 0.6.1, you will not be able to load CircuitPython 8.2.0 and later, due to increased size of the firmware. See these instructions for updating your bootloader.

Highlights of this release

  • New busio.I2C.probe() and bitbangio.I2C.probe() methods to check for a single device address.
  • Use new ESP-IDF I2C driver.
  • ESP32-S3: implement sdioio.
  • Incompatible change: Change default hostname for all Espressif boards to the ESP-IDF default, which is espressif. Previous board-specific names were not applied consistently. Use wifi.radio.hostname to set a custom hostname.
  • Incompatible change: Use default hostname for mDNS. Fix mDNS collision mangling.

Notable changes in 9.2.0 from 9.1.x

  • Raspberry Pi RP2350 support.
  • Update to Espressif ESP-IDF V5.3.1, including new I2C driver.
  • Merge MicroPython updates from v1.22.2 and v1.23.
  • Espressif BLE improvements.
  • Add math.dist().
  • _eve updates.
  • New busio.I2C.probe() and bitbangio.I2C.probe() methods to check for a single device address.
  • ESP32-S3: implement sdioio.
  • Incompatible change: Change default hostname for all Espressif boards to the ESP-IDF default, which is espressif.
  • Incompatible change: Use default hostname for mDNS. Fix mDNS collision mangling.

Incompatibility warnings

  • Change default hostname for all Espressif boards to the ESP-IDF default, which is espressif. Previous board-specific names were not applied consistently. Use wifi.radio.hostname to set a custom hostname.
  • Use default hostname for mDNS. Fix mDNS collision mangling. DNS hostnames will be different.

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 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:

  • broadcom: Raspberry Pi boards such as RPi 4, RPi Zero 2W
  • espressif: ESP32-P4 (currently no USB support)
  • litex: fomu
  • mimxrt10xx: NXP i.MX RT10xxx
  • renode: hardware simulator
  • silabs: Silicon Labs MG24 family
  • stm: ST non-STM32F4 chip families

Changes since 9.2.0-beta.0

Fixes and enhancements

  • Incompatible change: Use default hostname for mDNS. Fix mDNS collision mangling. #9699. Thanks @tannewt.
  • Fix epaperdisplay to handle delays properly when two_byte_sequence_length=True. #9694. Thanks @Sola85.
  • Fix crash when printing DeepSleepRequest exception, used internally by alarm. #9692. Thanks @jepler.
  • Fix internal check for connected BLE workflow, which was preventing deep sleep on some BLE boards. #9679. Thanks @dhalbert.
  • New busio.I2C.probe() and bitbangio.I2C.probe() methods to check for a single device address. #9671. Thanks @dhalbert.
  • Add slight delay in KeyMatrix scanning to allow time for signal setting. #9665. Thanks @SeanCline.
  • Update to tinyusb v0.17.0. #9664. Thanks @samblenny.
  • Fix MP3Decoder infinite loop when file ends in a partial frame. #9653. Thanks @eric321.

Port and board-specific changes

Broadcom

Espressif

i.MX

nordic

renode

RP2

SAMx

SiLabs

Spresense

STM

Individual boards

Documentation changes

  • Fix floppyio documentation formatting. #9658. Thanks @jepler.
  • Correct memorymap.AddressRange example. #9639. Thanks @jepler.

Build and infrastructure changes

  • Use MP_PROPERTY_GETTER, etc. everywhere. #9684. Thanks @diamant3.
  • Keep PYTHONPATH setting when running tests. #9655. Thanks @jepler.

Translation additions and improvements

  • Thanks for translations:

New boards since 9.2.0-beta.0

Known issues

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.

Contributors

eric321, tannewt, and 14 other contributors
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CircuitPython 9.2.0-beta.0

17 Sep 16:38
@dhalbert dhalbert
9.2.0-beta.0
8969ddc
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CircuitPython 9.2.0-beta.0 Pre-release
Pre-release

This is CircuitPython 9.2.0-beta.0, a beta release for 9.2.0. It has known bugs that wil be fixed before the final release of 9.2.0.

WARNING for nRF52 boards only: If your board has an nRF52 UF2 bootloader whose version is before 0.6.1, you will not be able to load CircuitPython 8.2.0 and later, due to increased size of the firmware. See these instructions for updating your bootloader.

Highlights of this release

  • On nRF boards, fix programmatic resetting directly into bootloader.
  • Fix BLE storage leak.
  • Clear input after ctrl-C on UART REPL boards. This fixes some USB workflow issues.
  • Update to Espressif ESP-IDF V5.3.1.
  • Merge MicroPython updates from v1.23.
  • Raspberry Pi RP2350 additions, fixes, and documentation.
  • Espressif BLE improvements.
  • Add math.dist().
  • _eve updates.

Notable changes in 9.2.0 from 9.1.x

  • Raspberry Pi RP2350 support.
  • Update to Espressif ESP-IDF V5.3.1.
  • Merge MicroPython updates from v1.22.2 and v1.23.
  • Espressif BLE improvements.
  • Add math.dist().
  • _eve updates.

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 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:

  • broadcom: Raspberry Pi boards such as RPi 4, RPi Zero 2W
  • espressif: ESP32-P4 (currently no USB support)
  • litex: fomu
  • mimxrt10xx: NXP i.MX RT10xxx
  • renode: hardware simulator
  • silabs: Silicon Labs MG24 family
  • stm: ST non-STM32F4 chip families

Changes since 9.2.0-alpha.2351

Fixes and enhancements

Port and board-specific changes

Broadcom

Espressif

i.MX

nordic

  • Fix resetting into UF2 bootloader even when the SoftDevice is not active. #9619, #9618. Thanks @tannewt.

renode

RP2

  • Add picodvi 320x240 8-bit color support on RP2530. #9636. Thanks @tannewt.
  • Document RP2350 A2 limitations due to RP2350-E9 erratum. #9633. Thanks @dhalbert.
  • Enable proper RP2350 modules, including picodvi. #9617. Thanks @tannewt.
  • Support RP2350 PIO features. #9610. Thanks @jepler.
  • Add XOSC startup delay for RP2350 boards. #9600. Thanks @tannewt.
  • rp2pio.StateMachine: add .offset and pc properties. #9594. Thanks @jepler.
  • Update PIO USB submodule. #9571. Thanks @tannewt.

SAMx

SiLabs

Spresense

STM

Individual boards

  • Adafruit Qualia ESP32-S3 RGB666: restore 120 MHz clock speed to fix display tearing. #9564. Thanks @tannewt.
  • BDMicro VINA-D21 removed. #9637. Thanks @dhalbert.
  • LILYGO T-Watch-S3: initialize AXP2101. #9582. Thanks @bill88t.
  • M5Stack Cardputer: expose board.KEYBOARD; allow custom key-event handling. #9529. Thanks @konstantint.
  • VIDI X V1.1: include board revision in name. #9613. Thanks @lorojakic.

Documentation changes

  • Fix typo in top-level README. #9635. Thanks @mpaw.
  • Improve Contributing.md and ports/espressif/README.rst with better links to Learn Guides. #9554. Thanks @samblenny.
  • Improve type annotations in _bleio. #9548. Thanks @elpekenin.

Build and infrastructure changes

Translation additions and improvements

New boards since 9.2.0-alpha.2351

Known issues

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.

Contributors

tannewt, konstantint, and 19 other contributors
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CircuitPython 9.1.4

17 Sep 13:46
@dhalbert dhalbert
9.1.4
fad755d
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CircuitPython 9.1.4

This is CircuitPython 9.1.4, the latest bugfix release of CircuitPython, and is a new stable release.

WARNING for nRF52 boards only: If your board has an nRF52 UF2 bootloader whose version is before 0.6.1, you will not be able to load CircuitPython 8.2.0 and later, due to increased size of the firmware. See these instructions for updating your bootloader.

Highlights of this release

  • On nRF boards, fix programmatic resetting directly into bootloader.
  • Fix BLE storage leak.
  • Clear input after ctrl-C on UART REPL boards. This fixes some USB workflow issues.

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 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
  • stm: ST STM32F4 chip family

These ports are considered alpha and will have bugs and missing functionality:

  • broadcom: Raspberry Pi boards such as RPi 4, RPi Zero 2W
  • litex: fomu
  • mimxrt10xx: NXP i.MX RT10xxx
  • renode: hardware simulator
  • silabs: Silicon Labs MG24 family
  • stm: ST non-STM32F4 chip families

Changes since 9.1.3

Fixes and enhancements

  • Fix gc_alloc_possible(). #9616. Thanks @tannewt.
  • Clear serial input buffer when a ctrl-C is received in UART REPL. #9616. Thanks @tannewt.

Port and board-specific changes

Broadcom

Espressif

  • Free _bleio.Characteristic memory properly. #9616. Thanks @tannewt.

i.MX

nordic

  • Fix resetting into UF2 bootloader even when the SoftDevice is not active. #9618. Thanks @tannewt.

renode

RP2040

SAMx

SiLabs

Spresense

STM

Individual boards

Documentation changes

Build and infrastructure changes

Translation additions and improvements

New boards since 9.1.3

Known issues

Thanks

Thank you to all who used, tested, and contributed to this release, including the contributors above, and many others on GitHub and Discord. Join us on the Discord chat to collaborate.

Contributors

tannewt
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