Device(s) in range / closer than to PuckJS

[espruino-discuss]

Posted at 2017-01-13 by stephaneAG

Hi there

For anon-going project, I need to know if some device(s) are within the range of a Puck, and, if within it, how close the device(s) is/are to the Puck.

From what I could read in the ref, I see we can only "NRF.setRSSIHandler()" on the currently active connection, while we have an "rssi" prop in the "BluetoothDevice" objects returned by "NRF.findDevices()".

For a single device, I presume that using "NRF.connect()" and then setting an interval to handle the RSSI 'd do the trick, but I was wondering what was the best way to achieve the same behavior for multiple devices: in other words, some sort of "NRF.findDevices()" discarding anything that not in our interest ( ex: devices whose names & stuff are not present in an array ) ?

Anyway, I'll give both a try as soon as I can (..)
-> any hints welcome ;)

[gfwilliams]

Posted at 2017-01-13 by @gfwilliams

All you need is NRF.setScan(...) - it'll return RSSI of any devices it finds... Should be a lot easier!

Note that doing stuff like that leaves the radio on, so will drain the batteries a lot faster!