v0.4.1

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[0.4.1] - 2026-03-25

Fixed

• Fix DEFAULT_VID and DEFAULT_PID constants no longer being exported from init.py

Release v0.4.0

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[0.4.0] - 2026-03-25

Added

• ConfigurationBlock learned some new attributes: uart_type, vbus_is_3v3, is_self_powered
• CyMfgrIface.change_type() now allows configuring the UART type when modifying a device, rather than always setting it to 6 wire
  • The old behavior was causing bugs in my application due to the flow control pins being used by the serial bridge when they were not connected in HW
• OpenMode now includes the UART type. The existing OpenMode.UART now sets 2 wire mode, while a new OpenMode.USART constant allows opening it in 4-wire mode

Changed

• CyScbContext.scan_for_device() no longer needs the open mode as an argument (this was not really being used and didn't make sense)

Release v0.3.2

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[0.3.2] - 2024-04-28

Fixed

• Added udev rule for CY7C65211A default PID
• Fixed scanning/reconfiguring devices in UART_CDC mode with no serial number (warning is printed instead of crashing)
• Fixed default_frequency missing from ConfigurationBlock string conversion
• Config block version 2 (observed on CY7C65211A) is now permitted for the driver, and seems to work OK

Release v0.3.1

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[0.3.1] - 2024-03-19

Fixed

• Work around tiangolo/typer#463 by explicitly declaring a dependency on Click >=8.0
• Fix minimum Python version dependency

Release v0.3.0

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[0.3.0] - 2024-03-18

First (hopefully) stable release!

Added

• SPI and UART APIs are now documented
• Added new cy_serial_cli serial-term command which opens a miniterm instance on the SCB device
• Added new cy_serial_cli spi-transaction command which allows doing SPI transactions from the command line
• README now contains a section about MacOS usage.

Changed

• Scanning for and opening devices is now done using a CyScbContext object rather than using global functions. This allows one process to open multiple serial bridge devices.

Fixed

• Check has been added for the issue that causes changing the type of a UART_CDC device to fail on MacOS. Cannot completely fix the issue but can at least notify the user and ask them to rerun the command with sudo.

Release v0.2.0

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[0.2.0] - 2024-03-03

I2C and CLI update!

Added

• I2C API is now documented
• Added new cy_serial_cli i2c-write and cy_serial_cli i2c-read commands, which allow doing simple I2C transactions directly from the command line

Changed

• CLI now uses typer instead of argparse. Besides making it look cooler, this improves type safety and adds some much more understandable exception handlers for the CLI.

Release v0.1.0

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[0.1.0] - 2024-02-25

Initial release.

Added

• Support for I2C controller, SPI controller, and UART CDC mode via a pure Python driver.
• Support for changing the VID, PID, and serial number of a device
• Support for changing the type of a device
• Device scanning
• open_device() functiion which automatically changes the type of a device as needed