It is highly probable you are actually looking for one of the following three standard libraries: Library (Most Likely) This is used for communication with devices, such as the popular DS18B20 temperature sensors. Arduino Docs Communication via a single data wire. Header File: #include How to Download: Arduino IDE Manage Libraries Search for and install the version maintained by Paul Stoffregen. Alternatively, download it from the OneWire GitHub repository Library (Standard I2C) This is the built-in library for communication (using SDA and SCL pins). Communicating with I2C sensors, OLED displays, and EEPROMs. Header File: #include How to Download:
As with any library, always check for the latest version and documentation updates from the official repository. The OpenWire community continues to evolve the protocol, adding support for new transport layers and optimizing performance for the growing ecosystem of Arduino-compatible boards. openwire.h library download arduino
That will help identify the real library or a modern replacement. It is highly probable you are actually looking