Python TeensyToAny

A pythonic way to access the teensytoany board

• See: https://github.com/ramonaoptics/teensy-to-any

To program the teensy to any devices you will need the following additional dependencies:

• click
• appdirs
• requests

You can install them with:

conda install click appdirs requests
# or
pip install click appdirs requests

Features

• TODO

Credits

This package was created with Cookiecutter and the hmaarrfk/cookiecutter-pypackage project template.

History

0.15.0 (2026-10-02)

• Keep replies in step with their commands when the reading thread is held up, for example by another thread holding the GIL. pyserial's read_until checks its deadline after every byte, so a late reader used to take one byte of an on-time reply and leave the rest for the next command, after which every command read the reply meant for another one.
  • Replies are now read with a timeout that restarts with every byte, so a late reader still gets the rest of a reply that has already arrived.
  • A missing, incomplete or unparseable reply now flushes the input buffer and checks that a version round trip succeeds before raising TeensyToAnyReplyError, a subclass of RuntimeError. A reply carrying an error code from the device is raised as before, without flushing.

0.14.0 (2025-09-05)

• Provide support for teensytoany firmware 0.18.0 for spi_transfer16 command.
• The returned value from spi_transfer is also returned as an integer.

0.13.0 (2025-08-22)

• Consolidate multiple entry points into a single teensytoany command with subcommands:
  • teensytoany programmer (replaces teensytoany_programmer)
  • teensytoany i2c-scan (replaces teensytoany_i2c_scan)
  • teensytoany list (replaces teensytoany_list)
• Maintain backward compatibility with deprecation warnings for old entry points

0.12.1 (2025-08-22)

• Add fastled_set_max_refresh_rate method to control FastLED refresh rate.
  • Supports rates from 1-800 Hz for normal operation
  • Rate of 0 runs as fast as possible

0.12.0 (2025-08-21)

• Add missing command methods to provide complete interface to all firmware commands:
  • I2C commands: i2c_reset, i2c_read_no_register_uint8, i2c_write_no_register_uint8, i2c_read_payload_uint16, i2c_begin_transaction, i2c_write, i2c_end_transaction, i2c_buffer_size, i2c_write_bulk
  • I2C_1 commands: i2c_1_reset, i2c_1_read_no_register_uint8, i2c_1_write_no_register_uint8, i2c_1_read_payload_uint16, i2c_1_begin_transaction, i2c_1_write, i2c_1_end_transaction, i2c_1_buffer_size, i2c_1_write_bulk
  • SPI commands: spi_buffer_size, spi_set_clock_divider
  • Register commands: register_read_uint8, register_write_uint8, register_read_uint32, register_write_uint32
  • Startup/Demo commands: post_serial_startup_commands_available, read_post_serial_startup_command
  • Utility commands: sleep_seconds
  • Info commands: info, reboot, serialnumber, license, nop
• Add i2c_write_bulk and i2c_1_write_bulk methods for writing up to 8k bytes with automatic chunking and transaction management
• Add nop command for testing purposes and comprehensive test suite

0.11.1 (2025-07-18)

• Provide an ability to define the device name at initialization time.

0.11.0 (2025-06-14)

• Try to automatically connect to devices with Manufacturer TeensyToAny. This requires firmware version 0.13.0 and up.

0.10.2 (2025-06-02)

• Fix I2C scanning command line utility by absorping the errors when no device is detected on the bus. Tested with a Teensy 4.0 and Sparkfun ISM330DHCX QWIIC board.

0.10.1 (2025-05-27)

• Attempt to fix i2c command line utility by correctly initializing the I2C bus.

0.10.0 (2025-05-26)

• Provide an i2c scan capabilities through the python api as well as a command line utility: teensytoany_i2c_scan.

0.9.0 (2025-05-16)

• Provide capabilities to program devices with board specific firmwares. #38

0.8.0 (2025-04-10)

• Automatically increase the timeout when issuing pulse commands to enable longer pulse durations.

0.7.0 (2025-03-12)

• Add support for Wire1 I2C interface.

0.6.0 (2025-03-09)

• Provide a method to control LEDs through FastLED.

0.5.0 (2024-11-10)

• Provide control over the startup and demo commands.
• Ensure that potentially undefined variable is defined.

0.4.0 (2024-04-05)

• Provide functions to fetch local and remote firmware versions.
• Provide a static method to program the latest firmware version and a CLI to do so from the terminal.

0.3.0 (2024-04-02)

• Add a timeout property to the functions that deal with updating the firmware.

0.2.0 (2023-11-07)

• Add a timeout property to simplify modifying the command timeout.

0.1.0 (2023-09-29)

• Provide access the new mcu command that reveals the microcontroller used at the time of firmware programming.

• Provide an internal method that can be used by developers to update to the latest firmware.

0.0.34 (2023-08-26)

• Small fixup in how reading the Teensy's registers is done to ensure better forward compatibility.

0.0.33 (2023-08-26)

The following features require teensy-to-any version 0.0.23 or greater

• Add support for gpio_digital_pulse.
• Add support for analog_pulse.
• Add support for new value parameter for gpio_pin_mode.
• Add support to read the data returned from spi_transfer_bulk.

0.0.32 (2023-08-30)

• Address bugs in reading the values from Teensy's registers.

0.0.31 (2023-08-21)

• Add the ability to read and write to the teensy's registers.

0.0.30 (2023-04-03)

• Increase default timeout to 0.2 seconds from 0.1. This helps receive error messages from missed I2C communications.
• Return an error if no response is returned from a standard command indicating a timeout.

0.0.29 (2023-03-06)

• Try to avoid racy conditions in version reading
• Flush buffers upon startup to help with crash recovery.

0.0.28 (2023-03-04)

• Make the error message when no device is found more human friendly.

0.0.27 (2022-10-16)

• Use packaging instead of distutils for version identification

0.0.26 (2021-09-13)

• added function spi_read_byte enabling the user to read SPI register.

0.0.25 (2021-07-14)

• added function analog_read enabling the user to read analog signals.

0.0.24 (2021-06-03)

• added i2c_read_payload and i2c_write_payload functions which allows users to read and write a contiguous payload of bytes

0.0.23 (2021-02-13)

• Ensure compatibility with pyserial 3.X
• Power a start_poweroff parameter to TeensyPower to start the device in the on state.
• Added the ability to close and open the device without deleting the python object.

0.0.22 (2020-06-18)

• Added the ability to control a power switch that is connected to the nominally on port.

0.0.20 (2019-12-14)

• Added capabilities for SPI and Analog functions

0.0.16 (2019-11-30)

• TeensyPower destructor will not raise an error when the device had failed to open.

0.0.15 (2019-11-29)

• TeensyPower devices will automatically poweroff the output when closed.

0.0.14 (2019-11-29)

• Added the specialized TeensyPower driver.

0.0.13 (2019-11-20)

• Added a few more serial numbers to the teensytoany.known_devices

0.0.1 (2019-11-07)

• First release on PyPI.