Experimenting with Bluetooth Low Energy libraries in a Kotlin / Raspeberry Pi environment

This is a little experiment project to test the ability to connect to an indoor rowing machine (WaterRower).
The WaterRower is equipped with a Bluetooth Low Energy communication module.

Eventually, I'd like to use the Raspberry to broadcast my WaterRower workouts to either Garmin Connect, or to my Garmin watch (via an ANT+ dongle).

And to make things more fun, the goal is to use Kotlin!

Blue-Falcon

Tested on branch bluefalcon:

• ✅ Was able to detect devices, though it was a bit strange initially (it did not show any device name).
• ✅ Can connect to the WaterRower
• ✅ Can discover services
• ❌ Did not succeed reading characteristics / value
• ❌ Do not get notification when paired device disconnects.

Blessed for Bluez

This is the library that actually backs Blue Falcon

Tested on branch blessed-bluez:

• ✅ Was able to detect devices, though it was a bit strange initially (it did not show any device name).
• ✅ Can connect to the WaterRower
• ✅ Can discover services
• ✅ Succeeded reading characteristics value (tested with string values only, but seems to work in principle)
• ✅ Succeeded getting notifications on subscribed characteristics.