Features:

• 3 protocols over USB UART (115200 8N1)
  • RAW (data length + address (1 or 2 bytes) and data itself, all in I2C bus format)
  • Coptonix #020101-like (Master mode)
  • manual: local echo, console commands, data in HEX, built-in bus scaner
• 7/10 bit I2C address support
• data length up to 255 bytes
• python adapter class ui2c.py, implementing i2c_msg from smbus2.SMBus to simplify integration with I2C/smbus applications and/or porting from Raspbery to Linux/Windows
• C/C++ API for integration with desktop applications under Linux/Windows
• build-in logging feature in RAW mode, doesn't interfere with regular data flow

Origin: https://alter.org.ua/en/soft/arduino/ui2c/ uses WireZeroCopy I2C library (https://github.com/Alter-1/WireZeroCopy/)