System device stream

[ghost-458]

Is it possible to detect when a system device is connected? I can poll getSystemDevices but it would be nice if it were in a stream.

Or is this pointless to do here? Should I just query the system devices, then move onto scanning for a device if it's not found?

The case I have is this:

• my app has an optional ble device that can be connected at any time
• the ble device has an aggressive sleep, so it's normally not advertising and not connected
• I've saved the deviceId in my app's storage

I want to launch the app first, then connect to the ble device when it's awoken. Do I just need to periodically poll getSystemDevices and scan for the device? Or is there a better way of doing this?