Auto Connect Nexus 5 Bluetooth to Macbook Pro for Smart Lock
I would like to have my Nexus 5, (Android 5), automatically link to my Macbook Pro, (10.10), via bluetooth, whenever it's in range, and stay connected as long as it's in range for the purposes of engaging Android 5's Smart Lock.
I've paired them from both directions, and I can send a file from the Nexus 5 to the MBP. If I try to use the "Connect to Network" choice from the MBP bluetooth preferences I get a "Network is Unavailable" message on the MBP. Unfortunately, for any of these activities the BT connection lasts for no more than the time it needs to transfer the file, or a few seconds otherwise.
I don't need to do anything via the bluetooth connection between computer and phone, I just want it to automatically connect and stay connected when in range, or failing that, let me manually connect and stay connected when in range. If there's some BT app that can achieve this, please feel free to point me in that direction.
Thanks
MacBook Pro (Retina, 15-inch, Late 2013), OS X Yosemite (10.10)