Firmware meant to run on the spar strain sensor boards. The purpose of this code is simple: read the HX711 and provide the most recent value over the one wire interface when requested of the board.
Although the addresses of the boards were originally meant to be set by means of resistive dividers R1 and R3, they are currently hardcoded as part of uploading.
Although the primary target of this project is the spar sensor boards themselves, there are provisions in this code to have it compiled and run on an Arduino Nano for testing. Hence why there are so many #ifdef...#else...#endif structure through the code to reroute the logic for the target hardware automatically.