[Bluez-devel] Inquiry scans.

[Bluez-devel] Inquiry scans.

[James Courtier-Dutton]

I have a Nokia 6310i mobile phone.
It has a bluetooth menu item that says: -
"Search for audio accessories"

If I activate this on the Nokia, it finds the Bluetooth headset.

In Bluez, in hcidump, I would expect to see these requests/responds 
between those two devices, but I see nothing.

If bluez never sees the Inquiry scan from the Nokia, how will bluez ever 
be able to respond?

Cheers
James


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Re: [Bluez-devel] Inquiry scans.

[Stephen Crane]

The Nokia is probably making its decision on the basis of the
class-of-device field returned by a device inquiry. 

I'm not sure if this is visible above the HCI level.

On Mon, 2004-02-23 at 15:39, James Courtier-Dutton wrote:
> I have a Nokia 6310i mobile phone.
> It has a bluetooth menu item that says: -
> "Search for audio accessories"
> 
> If I activate this on the Nokia, it finds the Bluetooth headset.
> 
> In Bluez, in hcidump, I would expect to see these requests/responds 
> between those two devices, but I see nothing.
> 
> If bluez never sees the Inquiry scan from the Nokia, how will bluez ever 
> be able to respond?
> 
> Cheers
> James
> 
> 
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steve.crane@rococosoft.com +353-1-6601315 (ext 209)



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Re: [Bluez-devel] Inquiry scans.

[Marcel Holtmann]

Hi James,

> I have a Nokia 6310i mobile phone.
> It has a bluetooth menu item that says: -
> "Search for audio accessories"
> 
> If I activate this on the Nokia, it finds the Bluetooth headset.
> 
> In Bluez, in hcidump, I would expect to see these requests/responds 
> between those two devices, but I see nothing.

you will never see them, because this is the job of the link manager and
not the HCI layer.

> If bluez never sees the Inquiry scan from the Nokia, how will bluez ever 
> be able to respond?

You don't need this information on the host stack side. The Bluetooth
chip itself responds to it.

Regards

Marcel




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Re: [Bluez-devel] Inquiry scans.

[Fred Schättgen]

On Monday 23 February 2004 16:39, James Courtier-Dutton wrote:
> I have a Nokia 6310i mobile phone.
> It has a bluetooth menu item that says: -
> "Search for audio accessories"
>
> If I activate this on the Nokia, it finds the Bluetooth headset.
>
> In Bluez, in hcidump, I would expect to see these requests/responds
> between those two devices, but I see nothing.
>
> If bluez never sees the Inquiry scan from the Nokia, how will bluez ever
> be able to respond?

You can't see inquiry scans with hcidump. Afaik there is no way to find out if 
your bluetooth adapter responded to an inquiry from another device.
The nokia probably looks a the device class - which is returned as part of an 
inquiry result - of the bluetooth device to find out if it is a 
headset/handsfree or not, so it can single out the headsets
without having to use SDP (which is visible in hcidump).
If you set the device class of your computer to 0x700408 for instance, the 
phone should recognize your computer as a handsfree. Problem is that most 
devices will place a headset icon next to your computers name in the device 
list now ;)

greetings
Fred

-- 
Fred Schaettgen
Sch@ttgen.net


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