[maemo-developers] [maemo-developers] bluetooth settings in debian

[From: Nils Faerber]

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rh schrieb:
> Hi all,

Hi!

> I have Linux Debian 2.6, bluetooth & Bluez already installed.
> But I don't know how to change setting for bluetooth (like friendly name
> & services).
> How / Where can I find those settings ?

In real Debian you find them in /etc/bluetooth/

> I want to make program like rfcomm server that can receive connection
> up to 7 client and then sending messages between them.
> Does bluez support this ?

In general yes - but it also a question of the Bluetooth module in use
if it supports full seven simultanous connections; some don't.

> Maybe anyone has documentation or sample program for this ?

First of all I would rethink the idea of using RFCOMM for this. RFCOMM
is intended for serial port "simulation" over Bluetooth. Do you really
want to have serial port? With baudrate and handshake settings?
I suppose not.
What you want is a (mostly) reliable streaming connection, right?
Then you can use a direct L2CAP connection for that. BlueZ offers this
through a quite simple socket interface. Libbluetooth will also help you
with that.
I have once written such a system - but it was contract work and not
open source, sorry. But I can confirm that it will work this way and
with up to seven clients ;)

But since you are posting on the Maemo list I guess you want to do this
on the 770, right? Want to write a chat program or such?
Nice thing!

But beware that some things in the 770 are different from Debian. For
example what you call "friendly name" is the Bluetooth module name which
can be set via "hciconfig hci0 name <name>". This is usually done from
hcid using the parameter from /etc/bluetooth/hcid.conf. In the 770's
config it sais "%h" which would expand to the hostname - on my device
this would be "Nokia770-51". But when you look at System Settings ->
Device then the name of your 770 is the one you entered at installation
and this is the name the Bluetooth device will be set to when
connections are opened. This is probably done by the connection manager
of the 770, I am not sure here.

You can find at least some Bluetooth related Maemo API documentation on
Maemo.org: http://www.maemo.org/platform/docs/osso-gwconnect.html


If you write some app, would you share it with us?

> Thanks
> Ronny
Cheers
  nils faerber

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