[Bluez-devel] Bluetooth enabled products codes

[Bluez-devel] Bluetooth enabled products codes

[soraberri]

Hi there,

Refering to the page "Bluetooth adapters and Bluetooth enabled products" at
http://www.holtmann.org/linux/bluetooth/features.html, I would like to know
the meaning of those hexadecimal numbers for features and versions. In the
Official BT assigned numbers I can't see the mapping.

Thanks a lot





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Re: [Bluez-devel] Bluetooth enabled products codes

[Marcel Holtmann]

Hi,

> Refering to the page "Bluetooth adapters and Bluetooth enabled products" at
> http://www.holtmann.org/linux/bluetooth/features.html, I would like to know
> the meaning of those hexadecimal numbers for features and versions. In the
> Official BT assigned numbers I can't see the mapping.

the features numbers are explained in the link manager part of the
Bluetooth specification and the version numbers are manufacturer
specific.

Regards

Marcel




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[Bluez-devel] Re: Bluetooth enabled products codes

[soraberri]

Hi Marcel,

I appreciate very much your quick answer.
There are a list of feature definitions in the link manager specification
and it is also specified wich bit is notifying the presence of a given
feature in terms of the position of this bit relative to the feature mask.
The supported features are also numbered from 0 to 63 i.e. ox0 to ox3F  (
though not all numbers defined), but anyway it's hard for me to perceive
which is the relationship between these numbers/mask and the hexadecimal
codes aforesaid

Thanks for your patience

> Hi,
>
> > Refering to the page "Bluetooth adapters and Bluetooth enabled products"
at
> > http://www.holtmann.org/linux/bluetooth/features.html, I would like to
know
> > the meaning of those hexadecimal numbers for features and versions. In
the
> > Official BT assigned numbers I can't see the mapping.
>
> the features numbers are explained in the link manager part of the
> Bluetooth specification and the version numbers are manufacturer
> specific.
>
> Regards
>
> Marcel
>





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Re: [Bluez-devel] Re: Bluetooth enabled products codes

[Marcel Holtmann]

Hi,

> I appreciate very much your quick answer.
> There are a list of feature definitions in the link manager specification
> and it is also specified wich bit is notifying the presence of a given
> feature in terms of the position of this bit relative to the feature mask.
> The supported features are also numbered from 0 to 63 i.e. ox0 to ox3F  (
> though not all numbers defined), but anyway it's hard for me to perceive
> which is the relationship between these numbers/mask and the hexadecimal
> codes aforesaid

use the API call lmp_featurestostr() to decode them.

Regards

Marcel




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[Bluez-devel] Re: Re: Bluetooth enabled products codes

[soraberri]

[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain, Size: 1827 bytes --]

so, what I didn't understant was that those four hexadecimal numbers in the
table represent the whole feature mask of the specific device. I was looking
to the 1.2 BT specification and new extended (AFH) features make necessary
more bytes to mask the features
Thanks, Marcel.

"Marcel Holtmann" <marcel@holtmann.org> escribió en el mensaje
news:1100610864.7235.1.camel@notepaq...
> Hi,
>
> > I appreciate very much your quick answer.
> > There are a list of feature definitions in the link manager
specification
> > and it is also specified wich bit is notifying the presence of a given
> > feature in terms of the position of this bit relative to the feature
mask.
> > The supported features are also numbered from 0 to 63 i.e. ox0 to ox3F
(
> > though not all numbers defined), but anyway it's hard for me to perceive
> > which is the relationship between these numbers/mask and the hexadecimal
> > codes aforesaid
>
> use the API call lmp_featurestostr() to decode them.
>
> Regards
>
> Marcel
>
>
>
>
> -------------------------------------------------------
> This SF.Net email is sponsored by: InterSystems CACHE
> FREE OODBMS DOWNLOAD - A multidimensional database that combines
> robust object and relational technologies, making it a perfect match
> for Java, C++,COM, XML, ODBC and JDBC. www.intersystems.com/match8





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Re: [Bluez-devel] Re: Re: Bluetooth enabled products codes

[Marcel Holtmann]

Hi,

> so, what I didn't understant was that those four hexadecimal numbers in the
> table represent the whole feature mask of the specific device. I was looking
> to the 1.2 BT specification and new extended (AFH) features make necessary
> more bytes to mask the features

for Bluetooth 1.1 only the first three bytes are used. Starting with 1.2
the full 8 byte range is used and it can also be extended.

Regards

Marcel




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