Made surprisingly good progress on the Bluetooth implementation tonight. Built a simple iOS app that can connect to the Arduino and read existing device settings. I’m pretty happy with the clean Swift implementation and the object oriented Arduino controller.

Protocol design ended up being very simple: A command byte, then three optional argument bytes. It’s enough to cover all cases. Same commands can be used for both reading and writing, which is nice.

This also ended up being a nice little recap for me on Swift 5 data types and advanced use of enums. Porting the same code over to Arduino was much easier than I anticipated.

Next step: Writing configuration changes to the device!