Phoenix is the software framework used for all CTR Electronics devices. Phoenix 6 changes from Phoenix 5 by offering new control requests, improved units support, device time sync (Pro) and more.
Documentation for Phoenix 6 is available: https://pro.docs.ctr-electronics.com
Phoenix 6 is a closed source library, but bug reports and feature requests can be sent via email to support@ctr-electronics.com.
Phoenix 6 Documentation attempts to follow the WPILib documentation style guide when possible. See the aforementioned website for details on building, running checks and opening a PR.