how can we know which BT devices are connected?

[gearhead]

This looks awesome! We have been trying to do this via shell scripts and I think we will try to put this in our UI to connect and pair and such. I will play with it in the near term and see how far I/we get.

One question, though... How can we know what BT devices are not just known, but connected? I have been struggling with this and the BT dev group on kernel.org says 'query the dbus' which does not appear to be what you are going here. 'bluetoothctl info' does not report all connected devices. On my machine, if there is only one connected device it reports that device. If there are 2 connected, it always reports my keyboard but nothing else.
To get the MAC address of all connected devices I need to use 'btmgmt con' which cannot be run 'non-interactively' for some reason. Once I have the MAC addresses I can then run 'bluetoothctl info' on each MAC to get its capabilities and continue to process.

[LeCodeurDuDimanche]

Hello ! To report the known bluetooth devices you can type bluetoothctl devices, which includes paired, connected and currently available devices. Then, you can run bluetoothctl info MAC, like you said, to get all the available information on the device, including the connection status.
The library does exactly this : detect all known devices and then extract some data from the bluetoothctl info MAC command.
I tried with multiple connected devices and it worked fine.

So after creating the Manager object, you can use this code to retrieve all the connected devices :

// Synchronize the data from the daemon
$manager->updateBluetoothInfo();
// Retrieve the devices
$connectedDevices = $manager->getBluetoothInfo()->getConnectedDevices();

You can run php test.php to have a quick overview of what information the library can provide.
Don't hesitate to ask for information as I didn't write much documentation for now.

[gearhead]

Great. We will try it.

btw, have you looked at the pecl-dbus extension? I built an Arch package for it (we are running Arch Linux on the RPIs) and am trying to get it to report similar things, but the syntax is posing a headache for me. I wonder if it may be faster than the using bluetoothctl for all the queries.