Re: [Bluez-devel] (no subject)

[jm <jmtoro@omepet.es>]

Hi Fabrizio,

I think connection attempts (pscan procedure) are serialized by the dongle, =

so maybe you should do the sdp queries sequentially and create the thread
when the connection is ready. You can also try to reduce the page timeout =

with "hciconfig pageto" to discard soon devices not in range at connection
time.

Someone please correct me if I'm wrong.

Jos=E9 Miguel


> Hi all,
> I made a simple software to send small pictures to all bluetooth  =

> devices in range (it's used by a museum ).
> This software is made in C using bluez api, I've used two bluetooth  =

> dongles : one to make periodic inquiry (not with HCI periodic inquiry  =

> command by with a loop) and the other to make sdp query looking for  =

> obex push service and sending image.
> My requirement was to use this software in some embedded linux based  =

> computer so I chose to limit external library, I made all using  =

> pthread so there is an infinite thread for inquiries and one thread  =

> to handle every sdp query and relative connection when devices are  =

> discovered. I've discarded also using python or other scripting  =

> languages for the platfom limitations.
>
> All works but I found it not so efficient, also with 6/7 devices it's  =

> really slow to identify and connect to devices, some times connection  =

> are unexpectedly closed and so on....
>
> Is it my approch to the problem wrong or bluetooth protocol is not  =

> suitable for this type of use?
>
> I'm using libs version 3.7-1 (on debian 4.0)
>
> Many thanks
> Fabrizio
>   =

>
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