From: Mayank BATRA <mayank.batra@st.com>
To: "'BlueZ development'" <bluez-devel@lists.sourceforge.net>
Date: Thu, 3 May 2007 10:53:55 +0530
Message-ID: <001601c78d43$3f03d710$9d0cc70a@dlh.st.com>
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In-Reply-To: <1178169412.6891.36.camel@violet>
Subject: Re: [Bluez-devel] Esco implementation patch
Reply-To: BlueZ development <bluez-devel@lists.sourceforge.net>
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Hi Marcel,

On Thursday, May 03, 2007 10:47 AM +0530, Marcel Holtmann wrote:
>>> How about the 2-EV* and 3-EV* packet types? The spec says that a 0
>>> for these bits means they have been enabled. Shouldn't you also
>>> check for their support in the feature mask?
>> 
>> Good question.  I'm not entirely sure of this, however I did not
>> interpret the specification in this manner.  All it says is that
>> there is a specific feature mask to disable 2-EV and 3-EV packets. 
>> There is nothing to say whether or not they are explicitly enabled. 
>> Also the examples in the specification use the esco feature masks in
>> the same manner as I do.  So I would assume that if EV3 support is
>> not enabled, then 2-EV3 and 3-EV3 packets will not be used by the
>> controller as well.  However, I could be wrong. 
> 
> don't worry about packet types. This is the link managers job. Enable
> as much packet types as possible.

But you'll fall into trouble if the local controller does not support
the packet type that you've enabled.
In Denis' case it worked because the device supported the 2-EV* and
3-EV* packet types and he "accidentaly" enabled them.
Why not check their support in the feature mask as well?

Regards,

Mayank


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