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

[Andreas Faerber <afaerber@rumms.uni-mannheim.de>]

Hi,

Bastien Nocera wrote:

>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.

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.

Anyway, some clarification on the events/structs and a recommendation by 
Marcel on suitable Bluetooth reference hardware in Germany would be very 
appreciated.

Kind regards,

Andreas


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