The bridge code is at https://github.com/mjg59/ulfire but doesn't have the Bluetooth code since I haven't got it working reliably yet (the machine I'm testing with has an ancient version of Bluez, and I need to upgrade that before doing more testing). I'll push that in the near future. It's pretty board specific though, I've found at least 6 different Bluetooth LE protocols for lighting so far. The easiest way to do it for testing is to just call out to gatttool in the callbacks.