[Bluez-devel] Continuous Inquiry

[Bluez-devel] Continuous Inquiry

[Pegasus ...]

Hi All:

My program is running a thread with continuos hci_inquiry(). I need to know 
when a new device is discovered in the middle of the inquiry. How do I do 
this?

The hcidump seems to show a lot of Inquiry Result event and the Remote Name 
Request for the devices found at the end of the Inquiry.


Thanks a lot.... and have a Happy New Year.

Keshav




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Re: [Bluez-devel] Continuous Inquiry

[Marcel Holtmann]

Hi Keshab,

> My program is running a thread with continuos hci_inquiry(). I need to know 
> when a new device is discovered in the middle of the inquiry. How do I do 
> this?

program the HCI raw socket directly maybe you should use periodic
inquiry. You will find example code in the mailing list archive.

Regards

Marcel




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Re: [Bluez-devel] Continuous Inquiry

[Pegasus ...]

Thanks for your response.

If I do Inquiry in batches of  1.28 seconds, will that affect Inquiry 
response from other devices? ...due to the Inquiry Scan Window traversing 
the same frequencies again !

I tested the batch approach with the two Socket CF+PCMCIA cards I have and 
seem to work fine... but maybe it wont work when there are more devices from 
different vendors ?

Thanks again....


>From: Marcel Holtmann <marcel@holtmann.org>
>Reply-To: bluez-devel@lists.sourceforge.net
>To: BlueZ Mailing List <bluez-devel@lists.sourceforge.net>
>CC: uwpegasus@hotmail.com
>Subject: Re: [Bluez-devel] Continuous Inquiry
>Date: Sat, 01 Jan 2005 19:48:31 +0100
>
>Hi Keshab,
>
> > My program is running a thread with continuos hci_inquiry(). I need to 
>know
> > when a new device is discovered in the middle of the inquiry. How do I 
>do
> > this?
>
>program the HCI raw socket directly maybe you should use periodic
>inquiry. You will find example code in the mailing list archive.
>
>Regards
>
>Marcel
>
>
>
>
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>The SF.Net email is sponsored by: Beat the post-holiday blues
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>_______________________________________________
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>Bluez-devel@lists.sourceforge.net
>https://lists.sourceforge.net/lists/listinfo/bluez-devel




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Re: [Bluez-devel] Continuous Inquiry

[Marcel Holtmann]

Hi,

> If I do Inquiry in batches of  1.28 seconds, will that affect Inquiry 
> response from other devices? ...due to the Inquiry Scan Window traversing 
> the same frequencies again !
> 
> I tested the batch approach with the two Socket CF+PCMCIA cards I have and 
> seem to work fine... but maybe it wont work when there are more devices from 
> different vendors ?

I think this will lead into problems some time. Use the HCI raw socket
directly and read every inquiry result event.

Regards

Marcel




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[Bluez-devel] Bluz APi

[Anderson Clayton]

Dear friends,


I am a freshman in the bluez world and I would apreciate if someone could
help me on finding a guide of the bluez api.

AND HAPPY NEW YEAR FOR EVERYBODY



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Re: [Bluez-devel] Bluz APi

[Marcel Holtmann]

Hi Anderson,

> I am a freshman in the bluez world and I would apreciate if someone could
> help me on finding a guide of the bluez api.

the source packages contain many example and test programs. Use the
source, Luke ;)

Regards

Marcel




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RES: [Bluez-devel] Bluz APi

[Anderson Clayton]

Hi Marcel,

I tryed to compile "hstest.c" using "make hstest" but it did not work.

am i doing something wrong?

reagards

-----Mensagem original-----
De: bluez-devel-admin@lists.sourceforge.net
[mailto:bluez-devel-admin@lists.sourceforge.net]Em nome de Marcel
Holtmann
Enviada em: domingo, 2 de janeiro de 2005 08:58
Para: BlueZ Mailing List
Assunto: Re: [Bluez-devel] Bluz APi


Hi Anderson,

> I am a freshman in the bluez world and I would apreciate if someone could
> help me on finding a guide of the bluez api.

the source packages contain many example and test programs. Use the
source, Luke ;)

Regards

Marcel




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Re: RES: [Bluez-devel] Bluz APi

[Marcel Holtmann]

Hi Anderson,

> I tryed to compile "hstest.c" using "make hstest" but it did not work.
> 
> am i doing something wrong?

use "./configure --enable-test" first.

Regards

Marcel




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Re: [Bluez-devel] Continuous Inquiry

[Pegasus ...]

Hi Marcel:

>From: Marcel Holtmann <marcel@holtmann.org>
>Reply-To: bluez-devel@lists.sourceforge.net
>To: BlueZ Mailing List <bluez-devel@lists.sourceforge.net>
>Subject: Re: [Bluez-devel] Continuous Inquiry
>Date: Sun, 02 Jan 2005 00:36:06 +0100
>
>Hi,
>
> > If I do Inquiry in batches of  1.28 seconds, will that affect Inquiry
> > response from other devices? ...due to the Inquiry Scan Window 
>traversing
> > the same frequencies again !
> >
> > I tested the batch approach with the two Socket CF+PCMCIA cards I have 
>and
> > seem to work fine... but maybe it wont work when there are more devices 
>from
> > different vendors ?
>
>I think this will lead into problems some time. Use the HCI raw socket
>directly and read every inquiry result event.
>
>Regards
>
>Marcel


I am a bit lost here.

I looked at the code for hic_inquiry and hci_send_req... still not sure how 
to read raw socket event for inquiry.  Any other pointer to look at?

Thanks for your time and help...




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Re: [Bluez-devel] Continuous Inquiry

[Marcel Holtmann]

Hi,

> I am a bit lost here.
> 
> I looked at the code for hic_inquiry and hci_send_req... still not sure how 
> to read raw socket event for inquiry.  Any other pointer to look at?

th point is using the HCI raw socket directly. Sending the HCI inquiry
command and then reading the inquiry results events. There is example
code for that in the mailing list archive.

Regards

Marcel




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Re: [Bluez-devel] Continuous Inquiry

[Steven Singer]

Pegasus ... wrote:
> If I do Inquiry in batches of  1.28 seconds, will that affect Inquiry 
> response from other devices? ...due to the Inquiry Scan Window traversing 
> the same frequencies again !
> 
> I tested the batch approach with the two Socket CF+PCMCIA cards I have and 
> seem to work fine... but maybe it wont work when there are more devices from 
> different vendors ?

In general, this can't be guaranteed to work for the reason you stated.

The minimum time an inquiry can be performed for and have a good chance
of picking up all devices is 10.24 seconds.

I think the raw socket approach is best. Do the inquiry as normal but
snoop on the inquiry response events by using a raw HCI socket.

	- Steven



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