Re: [Bluez-users] bluez and dbus - how to turn on discovery?

[Marcel Holtmann <marcel@holtmann.org>]

Hi Andrew,

> dbus is such a hairy pain in the ass, I hope that my opinion of it changes 
> once I understand it more.
> 
> I would have thought that using a dbus "browser" such as kdbus I would have 
> found a method to turn discovery on and off, as well as a bunch of other 
> things.  However, browsing the system bus it I see
> 
> :1.0/org/bluez as an object (with nothing else)
> org.bluez/org/bluez as an object (again with nothing else)
> 
> There isn't anything interesting in the session bus (at least not relating to 
> Bluez, although I wasn't expecting to find anything.)
> 
> There is also an org.freedesktop.DBus interface in both the system and session 
> busses with a ton of crap under it, but nothing bluez-related.
> 
> I haven't found much in the way of documentation on how to use this, yet we're 
> all expected to use it.  Can someone assist in giving perhaps a crash course 
> in controlling bluez through dbus?

the session bus is not used by BlueZ at all. We only use the system bus.

I never used kdbus and so I can't tell you if that would work or not. I
always use the native interface from C or from Python. Some people use
dbus-send, but I can't remember the syntax.

So in general if your adapter has been found you should see org
org.bluez/org/bluez/hci0 object with the org.bluez.Adapter interface.
This interface on this path provides a SetMode method that can be used
to change the mode from "connectable" to "discoverable".

Since you speak about kdbus, I assume you don't use GNOME, but in that
case you could install bluez-gnome and use the bluetooth-properties
program to change the setting.

Regards

Marcel



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