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From: Ilya Rubtsov <lusyaru@gmail.com>
To: linux-bluetooth@vger.kernel.org
Subject: Set Tmin and Tmax for inquiry?
Date: Wed, 18 Mar 2009 18:06:58 +0300	[thread overview]
Message-ID: <49C10E12.3030708@gmail.com> (raw)

Hi

I'm developing an application for bluecasting. So period of periodic 
inquire is important for me.
AFAIK, inquire process takes 10.24 seconds (Bluetooth 2.0). But if I use 
StartDiscovery method in python script, then I see this in hcidump:

< HCI Command: Periodic Inquiry Mode (0x01|0x0003) plen 9
   max 24 min 16 lap 0x9e8b33 len 8 num 0

and I get "Inquiry Complete" event every ~24-30 second. But if I use 
'hcitool spinq', then I see:

< HCI Command: Periodic Inquiry Mode (0x01|0x0003) plen 9
   max 24 min 16 lap 0x9e8b33 len 8 num 0

and "Inquiry Complete" event takes place every ~13-15 seconds. And in 
both cases all remote devices is being founded, so I don't see any 
reason for longer inquiring. AFAIK HCID internally sets Tmin and Tmax 
parameters, but is there any way to affect to its 'decision'?

P.S. Excuse me for my English :(

             reply	other threads:[~2009-03-18 15:06 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-03-18 15:06 Ilya Rubtsov [this message]
2009-03-18 20:42 ` Set Tmin and Tmax for inquiry? Ilya Rubtsov
2009-03-18 23:26   ` Carles Cufi
2009-03-18 23:40     ` Ilya Rubtsov
2009-03-19 14:07       ` Carles Cufi

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