Re: [Bluez-devel] Reading RSSI of non-connected devices

[Marcel Holtmann <marcel@holtmann.org>]

Hi Andreas,

> >As Marcel mentioned earlier, the easiest is to use the D-Bus services in
> >hcid to do that.
> >
> He didn't. He said the safe way would be to use raw HCI sockets and (in 
> other words) that the D-Bus interface was unstable. Also, I am currently 
> testing this on desktop and notebook machines but it was actually 
> supposed to run on mobile devices (Zaurus) where we would not be able to 
> update the kernel and require the latest D-Bus/BlueZ interfaces.

the D-Bus interface has nothing to do with used kernel.

> Nontheless we will evaluate D-Bus, but for the time being my boss is 
> content with HCI sockets under root account.
> I'm familiar with socket programming in general but haven't used D-Bus 
> before and so we are worried whether introducing another layer such as 
> D-Bus might be of disadvantage for our software which needs non-cached 
> data, nearly in realtime (just as with HCI sockets). The D-Bus page 
> itself says it's not stable yet and I did not find documentation on how 
> to use it with BlueZ. The BlueZ library was very helpful in getting my 
> code to work, whereas I have no clue on where to find any such hints for 
> D-Bus both in the BlueZ 2.22 downloads and in the 2.6.13.4 kernel which 
> were the latest respectively when I downloaded them some weeks ago. I 
> can only guess from the examples at freedesktop.org that it'll be 
> /org/bluez/something.

The D-Bus interface works quite good, but I won't guarantee a stable API
at the moment. If needed, I am going to break it.

Regards

Marcel




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