2005-04-14 17:44:53

by Jesse Guardiani

[permalink] [raw]
Subject: [Bluez-users] Re: Re: Re: bluetooth 1.2 - how do I know it's working?

On Thu, 14 Apr 2005 19:07:41 +0200, Marcel Holtmann wrote:

> Hi Jesse,
>
>> > it is working, but you need to get heavy data transmission on your
>> > wireless LAN and place the two devices near by.
>>
>> I'm not so sure it is working. I'm hearing fairly heavy popping and
>> cracking over my btsco connection, the 802.11b access point is about
>> two feet from my DBT 120 and my headset, and the afh value never
>> changes.
>>
>> Are there different afhmode settings I can try? Can I experiment
>> with different afh masks somehow?
>
> there exists a HCI command to influence the classification. So if you
> know what frequency is used by your access point, you can block these
> channels. Some time ago I thought about writing support for it, but I
> never really started it. Feel free to provide a patch.

OK. So custom code is the only way to specify it. What does the
afhmode command do then?

Also, is the fact that I'm getting a mask back when I run `hcitool afh`
proof that my DBT 120 is doing AFH? Or could it just mean that the headset
is attempting AFH but the dongle isn't?

Thanks!

--
Jesse Guardiani, Systems Administrator
WingNET Internet Services,
P.O. Box 2605 // Cleveland, TN 37320-2605
423-559-LINK (v) 423-559-5145 (f)
http://www.wingnet.net





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2005-04-14 18:21:50

by Marcel Holtmann

[permalink] [raw]
Subject: Re: [Bluez-users] Re: Re: Re: bluetooth 1.2 - how do I know it's working?

Hi Jesse,

> >> > it is working, but you need to get heavy data transmission on your
> >> > wireless LAN and place the two devices near by.
> >>
> >> I'm not so sure it is working. I'm hearing fairly heavy popping and
> >> cracking over my btsco connection, the 802.11b access point is about
> >> two feet from my DBT 120 and my headset, and the afh value never
> >> changes.
> >>
> >> Are there different afhmode settings I can try? Can I experiment
> >> with different afh masks somehow?
> >
> > there exists a HCI command to influence the classification. So if you
> > know what frequency is used by your access point, you can block these
> > channels. Some time ago I thought about writing support for it, but I
> > never really started it. Feel free to provide a patch.
>
> OK. So custom code is the only way to specify it. What does the
> afhmode command do then?

switch it on and off.

> Also, is the fact that I'm getting a mask back when I run `hcitool afh`
> proof that my DBT 120 is doing AFH? Or could it just mean that the headset
> is attempting AFH but the dongle isn't?

I am not 100% sure, but I think it means that both sides are doing AFH,
but there is no command to determine who is doing the classification.

Regards

Marcel




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