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I am trying to figure out a way to list the currently connected (and not just paired) bluetooth devices. I was wondering if there was an easy way to do this using pybluez. I need to trigger events based on the fact if a certain device is connected or not.

I am using a Raspberry Pi 3. Also, I understand that BLE devices periodically change their address, so, is there any way to check for a certain device repeatedly?

P.S. I am a beginner for both python and RPi.

  • Use bluetoothctlinfo AA:BB:CC:DD:EE:FF for getting device states. – Ephemeral Jan 15 at 9:52
  • The question answered here. – M. Rostami Jan 15 at 9:59
  • @M. Rostami That question only deals with devices that are nearby (not connected). Thanks for the effort, though. – Plyton Rexus Jan 15 at 10:21
  • @Ephemeral I did come across bluetoothctl and systemctl but don't really understand how to use either of them in Python. I know it can be done using a terminal, I know that much. – Plyton Rexus Jan 15 at 10:22
  • @PlytonRexus, You can use this python lib and follow this instructions. The project Development Status is Beta. You can find examples here – Ephemeral Jan 15 at 14:03
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On the command line, you can request a list of connected BT devices with

$ hcitool con
Connections:
> ACL 9C:65:B0:A0:1E:BD handle 11 state 1 lm MASTER AUTH ENCRYPT

Once you parse the MAC addresses from the output, you can check the device identity with

$ hcitool name "9C:65:B0:A0:1E:BD"
MY Mobile (GT-I9300I)

Even more info can be obtained with

$ hcitool info 9C:65:B0:A0:1E:BD
Requesting information ...
BD Address:  9C:65:B0:A0:1E:BD
OUI Company: Samsung Electronics Co.,Ltd (9C-65-B0)
Device Name: MY Mobile (GT-I9300I)
LMP Version: 4.0 (0x6) LMP Subversion: 0x7d3
Manufacturer: Qualcomm (29)
Features page 0: 0xff 0xfe 0x8f 0xfe 0xd8 0x3f 0x5b 0x87
...
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