[Bluez-devel] packet type

[Bluez-devel] packet type

[mark bernard]

hi,
is it possible to force bluez to use a self chosen packet type like DH5? or 
will it automatically switch to the best packet type?

Gr,
mark

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Re: [Bluez-devel] packet type

[Peter Wippich]

Hi Mark, 

On Fri, 1 Dec 2006, mark bernard wrote:
> hi,
> is it possible to force bluez to use a self chosen packet type like DH5? or 
> will it automatically switch to the best packet type?

You can set a Mask which packets types the baseband is allowed to use (see 
hcid.conf). However, from the allowed packet types the baseband chooses 
which one it actually uses . Further, some basenband implementations seems 
to interpret this "mask" differently (e.g. when you set the mask to DH5 
the baseband also uses all smaller packet types). 

Ciao, 
 
Peter 


|       Peter Wippich                   Voice: +49 30 46776411          |
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Re: [Bluez-devel] packet type

[Marcel Holtmann]

Hi Peter,

> > is it possible to force bluez to use a self chosen packet type like DH5? or 
> > will it automatically switch to the best packet type?
> 
> You can set a Mask which packets types the baseband is allowed to use (see 
> hcid.conf). However, from the allowed packet types the baseband chooses 
> which one it actually uses . Further, some basenband implementations seems 
> to interpret this "mask" differently (e.g. when you set the mask to DH5 
> the baseband also uses all smaller packet types). 

that is clearly a bug in the firmware, but please remember that packet
type DM1 is always selected.

Regards

Marcel



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Re: [Bluez-devel] packet type

[Marcel Holtmann]

Hi Mark,

> is it possible to force bluez to use a self chosen packet type like DH5? or 
> will it automatically switch to the best packet type?

unless for debugging, don't do this. Let the link manager choose the
right package type, because it knows what works best. The general rule
is to enable all available packet types.

Regards

Marcel



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