CircuitPython 7.2.4

This is CircuitPython 7.2.4, the latest bugfix revision of CircuitPython, and is a new stable release.

Notable fixes to 7.2.4 since 7.2.3

• Enable I2C power by default on Feather ESP32-S2.
• Fix supervisor.reload().

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:

• atmel-samd: Microchip SAMD21, SAMx5x
• cxd56: Sony Spresense
• espressif: Espressif ESP32-S2
• nrf: 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
• espressif: ESP32-S3, ESP32-C3
• litex: fomu
• mimxrt10xx: NXP i.MX RT10xxx
• stm: ST non-STM32F4 chip families

Changes since 7.2.3

Fixes and enhancements

• Fix supervisor.reload(). #6172. Thanks @tannewt.

Port and board-specific changes

Individual boards

• Adafruit Feather ESP32-S2: Enable I2C power by default on all board revisions. #6212: backport of #6103. Thanks @ladyada and @dhalbert.

Build and infrastructure changes

• Pin click and typer versions. #6211: backport of #6210. Thanks @dhalbert.

New boards since 7.2.3

• (none)

Known issues

• See https://github.com/adafruit/circuitpython/issues for other issues, including issues still to be addressed for:
  • 7.2.x
  • 7.3.0
  • 7.x.x

Thanks

Thank you to all who used, tested, and contributed since 7.2.3, including the contributors above, and many others on GitHub and Discord. Join us on the Discord chat to collaborate.

CircuitPython 7.2.3

This is CircuitPython 7.2.3, the latest bugfix revision of CircuitPython, and is a new stable release.

Notable fixes to 7.2.3 since 7.2.2

• Fix spurious ReloadExceptions when in the REPL.

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:

• atmel-samd: Microchip SAMD21, SAMx5x
• cxd56: Sony Spresense
• espressif: Espressif ESP32-S2
• nrf: 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
• espressif: ESP32-S3, ESP32-C3
• litex: fomu
• mimxrt10xx: NXP i.MX RT10xxx
• stm: ST non-STM32F4 chip families

Changes since 7.2.2

Fixes and enhancements

• Fix spurious ReloadExceptions when in the REPL. #6168. Thanks @dhalbert.

Port and board-specific changes

New boards since 7.2.2

• (none)

Known issues

• See https://github.com/adafruit/circuitpython/issues for other issues, including issues still to be addressed for 7.x.x.

Thanks

Thank you to all who used, tested, and contributed since 7.2.2, including the contributors above, and many others on GitHub and Discord. Join us on the Discord chat to collaborate.

CircuitPython 7.2.2

This is CircuitPython 7.2.2, the latest bugfix revision of CircuitPython, and is a new stable release.

Notable fixes to 7.2.2 since 7.2.1

• Fix multiple successive auto-reloads, especially on RP2040, and on macOS.
• Restore _bleio to Adafruit MatrixPortal board.

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:

• atmel-samd: Microchip SAMD21, SAMx5x
• cxd56: Sony Spresense
• espressif: Espressif ESP32-S2
• nrf: 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
• espressif: ESP32-S3, ESP32-C3
• litex: fomu
• mimxrt10xx: NXP i.MX RT10xxx
• stm: ST non-STM32F4 chip families

Changes since 7.2.1

Fixes and enhancements

• Improve auto-reload logic to avoid triggering multiple reloads, especially on RP2040 and macOS. #6153. Thanks @tannewt.

Port and board-specific changes

SAMD

• Re-enable bleio and remove frozen PortalBase on Adafruit MatrixPortal. #6154. Thanks @tannewt.

New boards since 7.2.1

• (none)

Known issues

• See https://github.com/adafruit/circuitpython/issues for other issues, including issues still to be addressed for 7.x.x.

Thanks

Thank you to all who used, tested, and contributed since 7.2.1, including the contributors above, and many others on GitHub and Discord. Join us on the Discord chat to collaborate.

CircuitPython 7.2.1

This is CircuitPython 7.2.1, the latest bugfix revision of CircuitPython, and is a new stable release.

Notable fixes to 7.2.1 since 7.2.0

• Espressif I2C pull-up detection fix.
• SAMD21 auto-reload reliability. In addition, for auto-reloads on any board, the program will stop more quickly, and will wait 0.75 seconds (was 0.5 seconds) after the last filesystem write before restarting.
• Update known certificates.
• Fix countio problems when used outside of code.py.
• Add from __future__ import annotations to allow program compatibility with CPython.

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:

• atmel-samd: Microchip SAMD21, SAMx5x
• cxd56: Sony Spresense
• espressif: Espressif ESP32-S2
• nrf: 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
• espressif: ESP32-S3, ESP32-C3
• litex: fomu
• mimxrt10xx: NXP i.MX RT10xxx
• stm: ST non-STM32F4 chip families

Changes since 7.2.0

Fixes and enhancements

• Update certificates. #6139 (backport of #6097). Thanks @FoamyGuy and @dhalbert.
• Add do-nothing from __future__ import annotations. #6137 (backport of #6117). Thanks @dhalbert.

Port and board-specific changes

Espressif

• Fix I2C pull-up detection. #6129. Thanks @prplz.

SAMD

• Make countio.Counter be long-lived, for implementation reasons. #6138 (backport of #6106). Thanks @DavePutz and @dhalbert.
• SAMD21: Auto-reload was not working reliably. #6142, #6132. Thanks @dhalbert.

New boards since 7.2.0

• (none)

Known issues

• See https://github.com/adafruit/circuitpython/issues for other issues, including issues still to be addressed for 7.x.x.

Thanks

Thank you to all who used, tested, and contributed since 7.2.0, including the contributors above, and many others on GitHub and Discord. Join us on the Discord chat to collaborate.

CircuitPython 7.2.0

This is CircuitPython 7.2.0, the latest minor revision of CircuitPython, and is a new stable release.

Notable additions to 7.2.0 since 7.1.1

• Continuing work on Raspberry Pi Broadcom board support.
• Espressif ESP32-S3 and ESP32-C3 support, including BLE.
• RP2040 PIO sideset support.
• board.STEMMA_I2C() available on all boards with STEMMA connectors.
• binascii.crc32().
• vectorio.contains().
• Turkish translation.

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:

• atmel-samd: Microchip SAMD21, SAMx5x
• cxd56: Sony Spresense
• espressif: Espressif ESP32-S2
• nrf: 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
• espressif: ESP32-S3, ESP32-C3
• litex: fomu
• mimxrt10xx: NXP i.MX RT10xx
• stm: ST non-STM32F4 chip families

Changes since 7.2.0-rc.2

This release is a relabeling of 7.2.0-rc.2 and is otherwise the same as that release.

New boards since 7.1.1

• Adafruit ESP32-S2 Camera: #5832. Thanks @ladyada.
• Adafruit QT Py ESP32-S3 no PSRAM: #5832. Thanks @ladyada.
• AIThinker ESP32-C3S-Kit-2M: #6032. Thanks @prplz.
• Diodes Delight Piunora. #5819. Thanks @tannewt.
• Espressif ESP32-C3 DevKitM-1. #5885. Thanks @tannewt.
• Espressif ESP32-S2 DevKitC-1-NR42. #5998. Thanks @anecdata.
• Espressif ESP32-S3 Box. #5691, #5674, #5661. Thanks @jepler.
• Espressif ESP32-S3 DevKit C-1-nopsram. #5691, #5655. Thanks @jepler.
• Espressif ESP32-S3 DevKit C-1. #5655. Thanks @jepler.
• HiiBot IoTs2. #6058. Thanks @Neradoc.
• JPConstantineau BlueMicro833. #5664. Thanks @jpconstantineau.
• JPConstantineau PyKey 18 Numpad. #5699. Thanks @jpconstantineau.
• JPConstantineau PyKey 44 Ergo. #5699. Thanks @jpconstantineau.
• JPConstantineau PyKey 60. #5699. Thanks @jpconstantineau.
• JPConstantineau PyKey 87 TKL. #5699. Thanks @jpconstantineau.
• Oak Development Technologies Cast-Away RP2040. #5666. Thanks @skerr92.
• Pimoroni Tiny 2040 (2MB). #5684. Thanks @ZodiusInfuser.
• Raspberry Pi Zero W. #5800, #5819. Thanks @tannewt.
• Raspberry Pi Zero. #5800, #5819. Thanks @tannewt.
• Seeeduino Xiao RP2040. #5696, #5519. Thanks @jpconstantineau and @prplz.
• Seeeduino Xiao nRF52840. #5753. Thanks @0hotpotman0.
• SparkFun Thing Plus STM32. #5597. Thanks @NathanY3G.
• Unexpected Maker FeatherS3. #5940, #5991. Thanks @UnexpectedMaker and @prplz.
• Unexpected Maker ProS3. #5940, #5991. Thanks @UnexpectedMaker and @prplz.
• Unexpected Maker TinyS3. #5940, #5991. Thanks @UnexpectedMaker and @prplz.
• Waveshare RP2040-Zero. #5820. Thanks @CharString.

Known issues

• See https://github.com/adafruit/circuitpython/issues for other issues, including issues still to be addressed for 7.x.x.

Thanks

Thank you to all who used, tested, and contributed since 7.1.1, including the contributors above, and many others on GitHub and Discord. Join us on the Discord chat to collaborate.

CircuitPython 7.2.0 Release Candidate 2

This is CircuitPython 7.2.0-rc.2, the second release candidate for CircuitPython 7.2.0. It is considered stable, but we want to give time for further testing before the final release of 7.2.0. (7.2.0-rc.1 was skipped due to a release error.)

Notable additions to 7.2.0 since 7.1.1

• Continuing work on Raspberry Pi Broadcom board support.
• Espressif ESP32-S3 and ESP32-C3 support, including BLE.
• RP2040 PIO sideset support.
• board.STEMMA_I2C() available on all boards with STEMMA connectors.
• binascii.crc32().
• vectorio.contains().
• Turkish translation.

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).

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:

• atmel-samd: Microchip SAMD21, SAMx5x
• cxd56: Sony Spresense
• espressif: Espressif ESP32-S2
• nrf: 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
• espressif: ESP32-S3, ESP32-C3
• litex: fomu
• mimxrt10xx: NXP i.MX RT10xx
• stm: ST non-STM32F4 chip families

Changes since 7.2.0-rc.0

Fixes and enhancements

• Fix REPL display on integrated displays when CircuitPython restarts. #6076, #6077. Thanks @kmatch98.

Port and board-specific changes

• (none)

Individual boards

• (none)

New boards since 7.1.1

• Adafruit ESP32-S2 Camera: #5832. Thanks @ladyada.
• Adafruit QT Py ESP32-S3 no PSRAM: #5832. Thanks @ladyada.
• AIThinker ESP32-C3S-Kit-2M: #6032. Thanks @prplz.
• Diodes Delight Piunora. #5819. Thanks @tannewt.
• Espressif ESP32-C3 DevKitM-1. #5885. Thanks @tannewt.
• Espressif ESP32-S2 DevKitC-1-NR42. #5998. Thanks @anecdata.
• Espressif ESP32-S3 Box. #5691, #5674, #5661. Thanks @jepler.
• Espressif ESP32-S3 DevKit C-1-nopsram. #5691, #5655. Thanks @jepler.
• Espressif ESP32-S3 DevKit C-1. #5655. Thanks @jepler.
• HiiBot IoTs2. #6058. Thanks @Neradoc.
• JPConstantineau BlueMicro833. #5664. Thanks @jpconstantineau.
• JPConstantineau PyKey 18 Numpad. #5699. Thanks @jpconstantineau.
• JPConstantineau PyKey 44 Ergo. #5699. Thanks @jpconstantineau.
• JPConstantineau PyKey 60. #5699. Thanks @jpconstantineau.
• JPConstantineau PyKey 87 TKL. #5699. Thanks @jpconstantineau.
• Oak Development Technologies Cast-Away RP2040. #5666. Thanks @skerr92.
• Pimoroni Tiny 2040 (2MB). #5684. Thanks @ZodiusInfuser.
• Raspberry Pi Zero W. #5800, #5819. Thanks @tannewt.
• Raspberry Pi Zero. #5800, #5819. Thanks @tannewt.
• Seeeduino Xiao RP2040. #5696, #5519. Thanks @jpconstantineau and @prplz.
• Seeeduino Xiao nRF52840. #5753. Thanks @0hotpotman0.
• SparkFun Thing Plus STM32. #5597. Thanks @NathanY3G.
• Unexpected Maker FeatherS3. #5940, #5991. Thanks @UnexpectedMaker and @prplz.
• Unexpected Maker ProS3. #5940, #5991. Thanks @UnexpectedMaker and @prplz.
• Unexpected Maker TinyS3. #5940, #5991. Thanks @UnexpectedMaker and @prplz.
• Waveshare RP2040-Zero. #5820. Thanks @CharString.

Documentation changes

• (none)

Build and infrastructure changes

• Use git describe --long when generating stubs. #6064. Thanks @dhalbert.

Translation additions and improvements

• (none)

Known issues

• See https://github.com/adafruit/circuitpython/issues for other issues, including issues still to be addressed for 7.x.x.

Thanks

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

CircuitPython 7.2.0 Release Candidate 0

This is CircuitPython 7.2.0-rc.0, the initial release candidate for CircuitPython 7.2.0. It is considered stable, but we want to give time for further testing before the final release of 7.2.0.

Notable additions to 7.2.0 since 7.1.1

• Continuing work on Raspberry Pi Broadcom board support.
• Espressif ESP32-S3 and ESP32-C3 support, including BLE.
• RP2040 PIO sideset support.
• board.STEMMA_I2C() available on all boards with STEMMA connectors.
• binascii.crc32().
• vectorio.contains().
• Turkish translation.

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).

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, atmel-samd, cxd56 (Spresense), espressif for ESP32-S2, nrf,raspberrypi, stm for the F4 family are stable. stm for other STM chip families is being actively improved but may be missing functionality and have bugs. broadcom (Raspberry Pi), espressif for ESP32-S3 and ESP32-C3, litex and mimxrt10xx are in an alpha state and will have bugs and missing functionality.

Changes since 7.2.0-alpha.2

Fixes and enhancements

• Don't update status LED color on brightness change. #6054. Thanks @tannewt.
• Don't wait for workflow connection after true deep sleep. #6051. Thanks @dhalbert.
• Update frozen libraries. #6060, #6043. Thanks @dhalbert and @makermelissa.
• Validate bitmap.blit arguments. #6035. Thanks @FoamyGuy.
• wifi.radio.start_ap(): new max_connections argument. #6022. Thanks @anecdata.
• Validate rainbowio.colorwheel() argument. #6016. Thanks @todbot.

Port and board-specific changes

Espressif

• Allow customization of how particular pins are reset. #6057. Thanks @tannewt.
• Respond promptly to keypress to enter REPL. #6046. Thanks @prplz.
• Fix pin state default handling. #6034. Thanks @tannewt.
• Increase socket limit on ESP32-S3 from 4 to 8. #6021. Thanks @anecdata.
• Add ESP32-S3 BLE GATT client support. #6013. Thanks @tannewt.
• Correct ping timeout. #6006. Thanks @DavePutz.

SAMx

• Fetch RTC counter more atomically. #6004. Thanks @dhalbert.

STM

• Prevent lost UART data while transmission is in progress. #6027. Thanks @EmergReanimator.

Individual boards

• Adafruit Feather ESP32-S2 TFT: update pin name. #6045. Thanks @kattni.
• Adafruit Feather ESP32-S2 TFT: fix pin state defaults. #6034. Thanks @tannewt.
• Adafruit QT Py ESP32-S2: make TX and RX pins available for non-debug builds. #6056. Thanks @Neradoc.
• Adafruit Portal boards: freeze in necessary libraries to save RAM. #6043. Thanks @makermelissa.
• SparkFun MicroMod SAMD51: correct board.SPI() MISO pin. #6023. Thanks @stonehippo.

New boards since 7.1.1

• Adafruit ESP32-S2 Camera: #5832. Thanks @ladyada.
• Adafruit QT Py ESP32-S3 no PSRAM: #5832. Thanks @ladyada.
• AIThinker ESP32-C3S-Kit-2M: #6032. Thanks @prplz.
• Diodes Delight Piunora. #5819. Thanks @tannewt.
• Espressif ESP32-C3 DevKitM-1. #5885. Thanks @tannewt.
• Espressif ESP32-S2 DevKitC-1-NR42. #5998. Thanks @anecdata.
• Espressif ESP32-S3 Box. #5691, #5674, #5661. Thanks @jepler.
• Espressif ESP32-S3 DevKit C-1-nopsram. #5691, #5655. Thanks @jepler.
• Espressif ESP32-S3 DevKit C-1. #5655. Thanks @jepler.
• HiiBot IoTs2. #6058. Thanks @Neradoc.
• JPConstantineau BlueMicro833. #5664. Thanks @jpconstantineau.
• JPConstantineau PyKey 18 Numpad. #5699. Thanks @jpconstantineau.
• JPConstantineau PyKey 44 Ergo. #5699. Thanks @jpconstantineau.
• JPConstantineau PyKey 60. #5699. Thanks @jpconstantineau.
• JPConstantineau PyKey 87 TKL. #5699. Thanks @jpconstantineau.
• Oak Development Technologies Cast-Away RP2040. #5666. Thanks @skerr92.
• Pimoroni Tiny 2040 (2MB). #5684. Thanks @ZodiusInfuser.
• Raspberry Pi Zero W. #5800, #5819. Thanks @tannewt.
• Raspberry Pi Zero. #5800, #5819. Thanks @tannewt.
• Seeeduino Xiao RP2040. #5696, #5519. Thanks @jpconstantineau and @prplz.
• Seeeduino Xiao nRF52840. #5753. Thanks @0hotpotman0.
• SparkFun Thing Plus STM32. #5597. Thanks @NathanY3G.
• Unexpected Maker FeatherS3. #5940, #5991. Thanks @UnexpectedMaker and @prplz.
• Unexpected Maker ProS3. #5940, #5991. Thanks @UnexpectedMaker and @prplz.
• Unexpected Maker TinyS3. #5940, #5991. Thanks @UnexpectedMaker and @prplz.
• Waveshare RP2040-Zero. #5820. Thanks @CharString.

Documentation changes

• RP2040: Explain PIO read/write sizes. #6011. Thanks @tannewt.
• Add half_duplex argument to busio.SPI() signature. #6003. Thanks @dhalbert.

Build and infrastructure changes

• Check for failure during qstr phase of build, fix spurious error. #6047. Thanks @jepler.
• Fix compression of long UTF-8 strings. #6039. Thanks @jepler.
• Better use of git describe to get commit string. #6033. Thanks @jepler.
• Fix all native module tests to run on x64. #6028. Thanks @jepler.
• Revise convert-release-notes.py script. #6020. Thanks @dhalbert.

Translation additions and improvements

• Thanks for translations:
  • @bergdahl (Swedish)
  • @hexthat (Chinese - Pinyin)
  • @Pixel-Clay (Russian)
  • @wtuemura (Portuguese - Brazil)

Known issues

• See https://github.com/adafruit/circuitpython/issues for other issues, including issues still to be addressed for 7.x.x.

Thanks

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

CircuitPython 7.2.0 Alpha 2

This is CircuitPython 7.2.0-alpha.2, the second published alpha release for CircuitPython 7.2.0. It is relatively stable, but there will be further additions and fixes before final release.

Notable additions to 7.2.0 since 7.1.0

• Continuing work on Raspberry Pi Broadcom board support.
• Espressif ESP32-S3 and ESP32-C3 support, including BLE.
• RP2040 PIO sideset support.
• board.STEMMA_I2C() available on all boards with STEMMA connectors.
• binascii.crc32().
• vectorio.contains().

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).

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, atmel-samd, cxd56 (Spresense), esp32s2, nrf,raspberrypi, stm for the F4 family are stable. stm for other STM chip families is being actively improved but may be missing functionality and have bugs. broadcom (Raspberry Pi), litex and mimxrt10xx are in an alpha state and will have bugs and missing functionality.

Changes since 7.2.0-alpha.1

Fixes and enhancements

• Add SPI half-duplex capability (only available on STM for now). #5990, #6003. Thanks @sgauche and @dhalbert.
• wifi.monitor: improve channel argument validation. #5996. Thanks @anecdata.
• bitbangio.I2C: switch pin to input mode when reading. #5977. Thanks @prplz.
• Add binascii.crc32(). #5969. Thanks @Life-Imaging-Services.
• Add board.STEMMA_I2C for all boards with a STEMMA, STEMMA/QT, or QWIIC connector. #5966, #5962. Thanks @Neradoc.
• displayio: expose REPL group as supervisor.splash. #5954. Thanks @kmatch98.
• neopixel_write: check if DigitalInOut has been deinited. # 5946. Thanks @tammymakesthings.
• Make CIRCUITPY writable by default on boards without USB. #5902. Thanks @tannewt.
• io.__name__ fixed. #5897. Thanks @dunkmann00.
• Validate file modes for open(). #5896. Thanks @dhalbert.
• Allow displayio.EpaperDisplay two-byte LUT table length. #5874. Thanks @dkulinski.
• Update ulab to 4.0.0. #5859. Thanks @jepler.
• Add audiomp3.MP3Decoder.decoded_samples. #5807, #5808. Thanks @unwiredben.
• countio: add selectable rise and fall selection, pull support. #5803. Thanks @dhalbert.
• Add vectorio.contains(). #5784. Thanks @WarriorOfWire.
• Add pixelbuf support in is31fl3741 #5726. Thanks @gamblor21.
• Allow multiple buses of the same type with different names in board. #5422. Thanks @Neradoc.

Port and board-specific changes

Broadcom

• Set JTAG pins to pull down on initialization. #5798. Thanks @jerryneedell.

Espressif

• Fix ping timeout. #5980. Thanks @DavePutz.
• busio.I2C: Use ESP-IDF combined write/read I2C routine. #5958. Thanks @dhalbert.
• Update to latest v4.4 commit. #5796, #5923. Thanks @microdev1.
• Fix microcontroller.cpu.frequency. #5921. Thanks @microdev1.
• Fix pulseio.PulseIn channel assignments to work on ESP32-S3. #5912. Thanks @DavePutz.
• Refactor pin reset code. #5894. Thanks @tannewt.
• neopixel_write: improve timing and pin reset state. #5892. Thanks @tannewt.
• Ensure supervisor_tick() is run on same core as CircuitPython. #5888. Thanks @tannewt.
• Increase ESP32-S3 heap size when no PSRAM. Fix S2 build problem. #5884. Thanks @tannewt.
• Enable reset to bootloader on USB 1200 baud speed change. #5880. Thanks @jepler.
• Fix digitalio.DigitalInOut open-drain outputs. #5866. Thanks @dhalbert.
• Patch ESP-IDF to fix I2C crash. #5854. Thanks @jepler.
• ESP32-S3: Use core 1 for CircuitPython. #5860. Thanks @tannewt.
• ESP32-S3: Fix USB when enabling wifi. #5858. Thanks @tannewt.
• Refactor configurations. USB and CircuitPython will use the same core. #5853. Thanks @tannewt.
• Enable rgbmatrix for all boards. #5796. Thanks @microdev1.
• ESP32-S3, ESP32-C3:
  • Fix BLE scanning forever. #5957. Thanks @tannewt.
  • Support BLE advertising. #5936. Thanks @tannewt.
  • Add BLE scanning. #5927. Thanks @tannewt.

nRF

• Enable is31fl3741 only on Adafruit LED Glasses Driver Board. #5955. Thanks @prplz.

RP2040

• Fix audiobusio.PDMIn to use supplied sample rate. #5993. Thanks @DavePutz.
• Record initial SPI frequency in busio.SPI(). #5987. Thanks @dhalbert.
• audiobusio.PDMIn and I2SOut: Fix PIO argument order to fix values. #5984. Thanks @DavePutz.
• Update pico-sdk to 1.3.0. #5974. Thanks @jepler.
• Claim pins properly in busio.UART(). #5834. Thanks @arturo182.

SAMx

• SAMx5x: Fetch RTC count more atomically, to prevent time jumps. #6004. Thanks @dhalbert.
• Fix tracking of board device singletons. #5951. Thanks @dhalbert.
• Fix SAMD audiobusio.PDMIn(). #5842. Thanks @dhalbert.

STM

• Fix SPI flash reading. #5948. Thanks @EmergReanimator.
• Fix busio.UART deinit checking. #5945. Thanks @EmergReanimator.

Individual boards

• Adafruit Feather ESP32-S2: turn on I2C power by default. #5832. Thanks @ladyada.
• Adafruit Feather ESP32-S2, ESP32-S2 TFT: add button pin. #5844. Thanks @kattni.
• Adafruit Feather ESP32-S2 TFT: Use board.SPI() for display. #5846. Thanks @jepler.
• Adafruit Feather ESP32-S2 TFT: Fix pin typo and pin order. #5829. Thanks @kattni.
• Adafruit Feather RP2040: add support for Winbond flash chip. #5899. Thanks @tannewt.
• Adafruit KB2040: Define default SPI pins. #5876. Thanks @Neradoc.
• Adafruit QT Py ESP32-S2: fix pin error. #5889. Thanks @kattni.
• Adafruit QT Py ESP32-S2: fix pin order. #5844. Thanks @kattni.
• BDMicro VINA D51: add LED_AUX pin. #5816. Thanks @bd34n.
• Capable Robot USB Hub: update pins and module choices. #6002. Thanks @CapableRobot.
• Challenger RP204: Add missing pins. #5822. Thanks @PontusO.
• Espressif ESP32-S3 DevKit boards: add GPIO40. #5975. Thanks @walshbp.
• Espressif ESP32-S3 DevKitC: Fix UART pins and add board.UART. #5905. Thanks @prplz.
• Espressif DevKit boards: rename boards for consistency. #5848. Thanks @prplz.
• Gravitech Cucumber ESP32-S2 boards: add LED_INVERTED. #5997. Thanks @anecdata.
• micro:bit v2: enable binascii. #5925. Thanks @jerryneedell.
• Seeeduino XIAO nRF52840 Sense: Use SoftDevice 7.0.1. #5877. Thanks @0hopotman0.
• Seeeduino XIAO SAMD: shrink build. #5981. Thanks @dhalbert.

New boards since 7.2.0-alpha.1

• Adafruit ESP32-S2 Camera: #5832. Thanks @ladyada.
• Adafruit QT Py ESP32-S3 no PSRAM: #5832. Thanks @ladyada.
• Diodes Delight Piunora. #5819. Thanks @tannewt.
• Espressif ESP32-C3 DevKitM-1. #5885. Thanks @tannewt.
• Espressif ESP32-S2 DevKitC-1-NR42. #5998. Thanks @anecdata.
• Raspberry Pi Zero. #5800, #5819. Thanks @tannewt.
• Raspberry Pi Zero W. #5800, #5819. Thanks @tannewt.
• Unexpected Maker FeatherS3. #5940, #5991. Thanks @UnexpectedMaker and @prplz.
• Unexpected Maker ProS3. #5940, #5991. Thanks @UnexpectedMaker and @prplz.
• Unexpected Maker TinyS3. #5940, #5991. Thanks @UnexpectedMaker and @prplz.
• Waveshare RP2040-Zero. #5820. Thanks @CharString.

Documentation changes

• Correct "libraries" to "classes". #5994. Thanks @tekktrik.
• Improve AnalogIn.reference_voltage description. #5989. Thanks @tekktrik.
• Espressif README fixes. #5959. Thanks @andypiper.
• Fix wifi type annotations. #5943. Thanks @prplz.
• Fix I2SOut example. #5939. Thanks @TheWoodsy.
• Fix pulseio.PulseOut example. #5907. Thanks @Neradoc.
• Remove "Edit on GitHub" link in readthedocs. #5863. Thanks @tekktrik.
• Update instructions for fetching submodules. #5856. Thanks @kattni.
• Update re examples. #5849. Thanks @alustig3.

Build and infrastructure changes

• STM: make ST driver repos be submodules. #5976. Thanks @sgauche.
• Automatically cancel superseded PR CI builds. #5922. Thanks @microdev1.
• Remove unused busio-using-bitbangio proxy files. #5862. Thanks @jepler.
• Push circuitpython-stubs to pypi.org only on a release. #5845. Thanks @dhalbert.
• Use filesystem stubs when filesystem is disabled. #5841. Thanks @EmergReanimator.
• Add execute permission to several scripts. #5817. Thanks @EmergReanimator.
• Improve ringbuf initialization API. #5813. Thanks @EmergReanimator.
• Improve TinyUSB build configuration options. #5812. Thanks @EmergReanimator.
• Fix build problem when internal filesystem is disabled. #5810. Thanks @EmergReanimator.
• Don't include utils/ directories in frozen modules. #5791. Thanks @prplz.

Translation additions and improvements

• Enable Turkish language builds. #5840. Thanks @electricalgorithm and @tannewt.
• Thanks for translations:
  • @bergdahl (Swedish)
  • @electricalgorithm (Turkish)
  • @hexthat (Chinese - Pinyin)
  • @tawez (Polish)
  • @wtuemura (Portuguese - Brazil)

Known issues

• See https://github.com/adafruit/circuitpython/issues for other issues, including issues still to be addressed for 7.2.0 and 7.x.x.

Thanks

Thank you to all who used, tested, and contributed, including the contributors ...

CircuitPython 7.1.1

This is CircuitPython 7.1.1, the latest bugfix revision of CircuitPython, and is a new stable release. It has fixes for RGBMatrix on RP2040 and PDMIn (microphone input) on SAMx boards, such as Circuit Playground Express. There are no other changes; unless you are affected by these problems, you do not need to upgrade from 7.1.0.

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, atmel-samd, cxd56 (Spresense), espressif for ESP32-S2, nrf,raspberrypi, stm for the F4 family are stable. stm for other STM chip families is being actively improved but may be missing functionality and have bugs. broadcom (Raspberry Pi), espressif for ESP32-S3 and ESP32-C3, litex and mimxrt10xx are in an alpha state and will have bugs and missing functionality.

Changes since 7.1.0

Port and board-specific changes

RP2040

• RGBMatrix: Clear interrupt when freeing timer. #5613. Thanks @jepler and @DavePutz.

SAMx

• audiobusio.PDMIn: fix hangs. #5851: backport of #5842. Thanks @dhalbert.

Known issues

• See https://github.com/adafruit/circuitpython/issues for open issues, including issues still to be addressed for 7.x.x.

Thanks

Thank you to all who used, tested, and contributed since 7.1.0, including the contributors above, and many others on GitHub and Discord. Join us on the Discord chat to collaborate.

CircuitPython 7.2.0 Alpha 1

This is CircuitPython 7.2.0-alpha.1, the first published alpha release for CircuitPython 7.2.0. It is relatively stable, but there will be further additions and fixes before final release.

Notable additions to 7.2.0 since 7.1.0

• Continuing work on Raspberry Pi Broadcom board support.
• Espressif ESP32-S3 support.
• RP2040 PIO sideset support.

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).

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, atmel-samd, cxd56 (Spresense), esp32s2, nrf,raspberrypi, stm for the F4 family are stable. stm for other STM chip families is being actively improved but may be missing functionality and have bugs. broadcom (Raspberry Pi), litex and mimxrt10xx are in an alpha state and will have bugs and missing functionality.

Changes since 7.1.x branch

Fixes and enhancements

• Update frozen libraries. #5789, #5778, #5773. Thanks @dhalbert.
• Go into safe mode if CIRCUITPY drive is unavailable. #5785. Thanks @dhalbert.
• displayio.Tilegrid: add width, height, tile_width, tile_height attributes. #5749. Thanks @FoamyGuy.
• Update ulab. #5747, #5740. Thanks @jepler.
• adafruit_pixelbuf: fix off-by-one errors. #5746. Thanks @dunkmann00.
• vectorio: support 32-bit color. #5728. Thanks @tannewt.
• wifi.SSLContext improvements. #5716. Thanks @timhawes.
• wifi.SSLSocket: fix error checking. #5714. Thanks @timhawes.
• vectorio.Rectangle: add width and height. #5709. Thanks @WarriorOfWire.
• sdcardio fix. #5694, #5688. Thanks @jepler.
• Fix _bleio HCI support. #5686, #5683. Thanks @dhalbert.
• Update _stage to avoid backlight problems. #5686, #5657. Thanks @deshipu.

Port and board-specific changes

Broadcom

• Allow long integers. #5774. Thanks @RetiredWizard.
• Add NeoPixel support. #5727. Thanks @tannewt.
• busio.SPI support. #5698. Thanks @tannewt.
• Full busio.UART support. #5676. Thanks @tannewt.

Espressif

• Add distinct UF2 family ID for ESP32-S3. #5771. Thanks @hathach.
• Update protomatter and reenable RGBMatrix. #5744. Thanks @jepler.
• Choose SPI channel automatically. #5660. Thanks @jepler.
• Update ESP-IDF to v4.4; add ESP32-S3 support; temporarily diable RGBMatrix. #5615. Thanks @microdev1.

nRF

• Add a distinct UF2 family ID for nRF52833 boards. #5775. Thanks @jpconstantineau.

RP2040

• Add sideset enable support to PIO. #5766. Thanks @tannewt.
• Protect nvm writes from interrupts. #5686, #5663. Thanks @FoamyGuy.
• Use longer clock-stretch timeout for RP2040 zero-byte I2C writes. #5686, #5656. Thanks @dhalbert.
• Use proper slice number for PWMOut. #5686, #5667. Thanks @dhalbert.
• RGBMatrix: clear interrupt when freeing timer. #5789, #5613. Thanks @jepler and @DavePutz.

SAMx

• Fix SAMD TAMPER interrupt clearing in PinAlarm; fixes some second-order bugs, including in displayio. #5747, #5708. Thanks @dhalbert.
• Fix FrequencyIn. #5686, #5665. Thanks @dhalbert.

Individual boards

• Adafruit Feather ESP32-S2: turn on I2C power by default. #5789, #5779, #5776. Thanks @ladyada and @dhalbert.
• Adafruit Feather ESP32-S2 TFT: fix color order. #5742. Thanks @ladyada.
• Adafruit Feather ESP32-S2 TFT: fix pin assignments. #5738. Thanks @ladyada.
• Adafruit KB2040: add CLK pin to match silkscreen. #5735. Thanks @tannewt.
• Adafruit QT Py ESP32-S2: fix pin assignments. #5738. Thanks @ladyada.
• Espressif ESP32-S3-Box-2.5 and ESP32-S3-DevkitC-1-nopsram: fix USB PIDs. Thanks @jepler.
• MakerDiary nRF52840 MDK USB Dongle: fix pin assignments. #5729. Thanks @Asura99.

New boards since 7.1.0

• Espressif ESP32-S3 Box. #5691, #5674, #5661. Thanks @jepler.
• Espressif ESP32-S3 DevKit C-1. #5655. Thanks @jepler.
• Espressif ESP32-S3 DevKit C-1-nopsram. #5691, #5655. Thanks @jepler.
• JPConstantineau BlueMicro833. #5664. Thanks @jpconstantineau.
• JPConstantineau PyKey 18 Numpad. #5699. Thanks @jpconstantineau.
• JPConstantineau PyKey 44 Ergo. #5699. Thanks @jpconstantineau.
• JPConstantineau PyKey 60. #5699. Thanks @jpconstantineau.
• JPConstantineau PyKey 87 TKL. #5699. Thanks @jpconstantineau.
• Oak Development Technologies Cast-Away RP2040. #5666. Thanks @skerr92.
• Pimoroni Tiny 2040 (2MB). #5684. Thanks @ZodiusInfuser.
• Seeeduino Xiao nRF52840. #5753. Thanks @0hotpotman0.
• Seeeduino Xiao RP2040. #5696, #5519. Thanks @jpconstantineau and @prplz.
• SparkFun Thing Plus STM32. #5597. Thanks @NathanY3G.

Documentation changes

• Fix typo in rp2pio. #5764. Thanks @dannystaple.
• Use circuitpython_typing instead of _typing for type annotations. #5760. Thanks @jepler.
• Update version of Sphinx. #5760. Thanks @jepler.
• Fix stubs for adafruit_bus_device by redoing directory structure to match module. #5786. Thanks @prplz.
• Add protocol definition for fonts for type annotations. #5759. Thanks @jepler.

Build and infrastructure changes

• Refactor longint compile-time flags. #5783. Thanks @jepler.
• Use Python version "3.x" in CI actions. #5752. Thanks #jepler.
• circuitpython-org now uses main. Check that branch for updates. #5747, #5712. Thanks @jepler.
• Don't rebuild boards on CI script changes. #5702. Thanks @tannewt.
• Add adabot submodule as requirement for website PR action. #5701. Thanks @tannewt.
• Partial submodule fetching using sha. #5687, #5686, #5681. Thanks @tannewt.
• Update file formatting due to blacken and uncrustify updates. #5686, #5670, #5669. Thanks @hdalbert.
• Automatically notify @v923z of ulab updates. #5653. Thanks @tannewt.

Translation additions and improvements

• Fix French translation issue. #5710. Thanks @jepler.
• Thanks for translations:
  • @bergdahl (Swedish)
  • @dronecz (Czech)
  • @hexthat (Chinese - Pinyin)
  • @Pixel-Clay (Russian)
  • @wtuemura (Portuguese - Brazil)

Known issues

• See https://github.com/adafruit/circuitpython/issues for other issues, including issues still to be addressed for 7.x.x.

Thanks

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