[Bluez-devel] L2CAP and SDP interface specification?

[Bluez-devel] L2CAP and SDP interface specification?

[Stefan Mischke]

Hello,

where can I find the specification of the BlueZ L2CAP and SDP API? I 
hope there ist any.
And how can I register my application for getting HCI events, so that I 
don't have to poll? hcid? API/specs?

Thanks!

Stefan




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Re: [Bluez-devel] L2CAP and SDP interface specification?

[Marcel Holtmann]

Hi Stefan,

> where can I find the specification of the BlueZ L2CAP and SDP API? I 
> hope there ist any.

the L2CAP API is a socket interface and you will find the API in the
bluetooth/l2cap.h header file. For an usage example look at l2test.

The SDP API can be found in bluetooth/sdp.h and bluetooth/sdp_lib.h and
for example code look at the dund and pand applications.

> And how can I register my application for getting HCI events, so that I 
> don't have to poll? hcid? API/specs?

The HCI API is also a socket interface. If you want to have some kind of
event based approach you have to use and IO event main loop like it is
used in the Glib.

Regards

Marcel




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Re: [Bluez-devel] L2CAP and SDP interface specification?

[Stefan Mischke]

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Re: [Bluez-devel] L2CAP and SDP interface specification?

[Marcel Holtmann]

Hi Stefen,

> in your "btk2003_slides.pdf" (very nice) you say on page 13 "C/C++ API
> f=FCr Kommandos und Events". Where is it? I can send commands easily vi=
a
> the bluez-libs' "hci_send_cmd", but how do I get the result/event? Ok,
> I could use "hci_send_req", but that function blocks until timeout.
> Isn't there a simple way to use "hci_send_cmd" and register some kind
> of callback for the result/event? Isn't bluetooth devices
> interrupt-driven? If not, isn't there some kind of global polling and
> event dispatching instance? I thought it was the hcid.

you can poll on the HCI socket and of course you can also use the HCI
filter to look only for specific events.

> By "Glib" you mean "glib-ectomy.c" of hcid? In it's main loop it does
> "rc =3D poll(ufds, nfds, -1);". Does it wait/block forever for an event
> or what does "-1" mean? Btw, what's hcid for (except for initializing
> the device and giving it a name)?=20

I meant Glib (www.gtk.org) and the hcid is for device initialization and
it contains the security manager. And btw try "man poll" ;)

Regards

Marcel




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