[Bluez-users] Support for multicasting in bluetooth

[Bluez-users] Support for multicasting in bluetooth

[Nel D]

[-- Attachment #1.1: Type: text/plain, Size: 1423 bytes --]

hello,
  I want to write a small app wherein am able to broadcast a message to a
piconet. However to start of with, i found that bluetooth version
1.2doesn't have mutlicast support[1].

However a little of googling and i found that bluetooth version2.0 supports
multicasting :) [2]

So now here's a question [might be stupid for some but am stuck :( ]. How do
i find out whether a given bluetooth adapter adheres to version 2.0 ? .

hciconfig -a on current adapter shows the following output.

hci0:   Type: USB
        BD Address: 00:11:67:12:04:18 ACL MTU: 678:8 SCO MTU: 48:10
        UP RUNNING PSCAN
        RX bytes:420 acl:0 sco:0 events:19 errors:0
        TX bytes:323 acl:0 sco:0 commands:19 errors:0
        Features: 0xbf 0xfe 0x8d 0x78 0x08 0x18 0x00 0x00
        Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3
        Link policy: RSWITCH HOLD SNIFF PARK
        Link mode: SLAVE ACCEPT
        Name: 'BlueZ (0)'
        Class: 0x100100
        Service Classes: Unspecified
        Device Class: Computer, Uncategorized
        HCI Ver: 1.2 (0x2) HCI Rev: 0x1f4 LMP Ver: 1.2 (0x2) LMP Subver:
0x1f4
        Manufacturer: Integrated System Solution Corp. (57)


Is the HCI Ver. the one i should look out for ?
Any help on this would be greatly appreciated.


[1]
http://www.bluetooth.com/Bluetooth/Learn/Works/Data_Transport_Architecture.htm
[2] http://www.funsms.net/what_is_bluetooth.htm



Thanks ,
  nel

[-- Attachment #1.2: Type: text/html, Size: 2234 bytes --]

[-- Attachment #2: Type: text/plain, Size: 309 bytes --]

-------------------------------------------------------------------------
SF.Net email is sponsored by: The Future of Linux Business White Paper
from Novell.  From the desktop to the data center, Linux is going
mainstream.  Let it simplify your IT future.
http://altfarm.mediaplex.com/ad/ck/8857-50307-18918-4

[-- Attachment #3: Type: text/plain, Size: 164 bytes --]

_______________________________________________
Bluez-users mailing list
Bluez-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/bluez-users

Re: [Bluez-users] Support for multicasting in bluetooth

[Marcel Holtmann]

Hi,

>   I want to write a small app wherein am able to broadcast a message
> to a piconet. However to start of with, i found that bluetooth version
> 1.2 doesn't have mutlicast support[1]. 
> 
> However a little of googling and i found that bluetooth version2.0
> supports multicasting :) [2]

not sure what that means, but the way of multicast that you think of is
actually not supported by Bluetooth.

Regards

Marcel



-------------------------------------------------------------------------
SF.Net email is sponsored by: The Future of Linux Business White Paper
from Novell.  From the desktop to the data center, Linux is going
mainstream.  Let it simplify your IT future.
http://altfarm.mediaplex.com/ad/ck/8857-50307-18918-4
_______________________________________________
Bluez-users mailing list
Bluez-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/bluez-users

Re: [Bluez-users] Support for multicasting in bluetooth

[Nel D]

[-- Attachment #1.1: Type: text/plain, Size: 729 bytes --]

On 12/3/07, Marcel Holtmann <marcel@holtmann.org> wrote:
>
>
> not sure what that means,


Thanks for the reply, i basically want to stream audio over a network of
Bluetooth enabled devices in a piconet. I had a look at PAN profile. On the
kernel side i saw BNEP has multicast filter support. So i figured that
software has multicast support, its the hardware that should support
multicast support.

 but the way of multicast that you think of is
> actually not supported by Bluetooth.



Ok ..so right now its not supported. Is there any plan of supporting it ?
Does it fall under any particular profile?. I would love to have this
working and contribute sumthing towards open source .

Regards
>
> Marcel
>
>
>


Thanks,
  Nel

[-- Attachment #1.2: Type: text/html, Size: 1446 bytes --]

[-- Attachment #2: Type: text/plain, Size: 309 bytes --]

-------------------------------------------------------------------------
SF.Net email is sponsored by: The Future of Linux Business White Paper
from Novell.  From the desktop to the data center, Linux is going
mainstream.  Let it simplify your IT future.
http://altfarm.mediaplex.com/ad/ck/8857-50307-18918-4

[-- Attachment #3: Type: text/plain, Size: 164 bytes --]

_______________________________________________
Bluez-users mailing list
Bluez-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/bluez-users

Re: [Bluez-users] Support for multicasting in bluetooth

[Marcel Holtmann]

Hi,

> 
> Thanks for the reply, i basically want to stream audio over a network
> of Bluetooth enabled devices in a piconet. I had a look at PAN
> profile. On the kernel side i saw BNEP has multicast filter support.
> So i figured that software has multicast support, its the hardware
> that should support multicast support.  

if you use multicast in a point-to-point connection, it doesn't mean
that it is a real multicast. So don't confuse higher level multicast
support with multicast support of the Bluetooth radio. If the baseband
doesn't support it, it doesn't matter what the higher protocols layers
support.

And you should really get yourself a book with the Bluetooth basics. If
you don't understand how the basics work, you have problems to
understand what are the limitations of Bluetooth.

Regards

Marcel



-------------------------------------------------------------------------
SF.Net email is sponsored by:
Check out the new SourceForge.net Marketplace.
It's the best place to buy or sell services for
just about anything Open Source.
http://sourceforge.net/services/buy/index.php
_______________________________________________
Bluez-users mailing list
Bluez-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/bluez-users

Re: [Bluez-users] Support for multicasting in bluetooth

[Nel D]

[-- Attachment #1.1: Type: text/plain, Size: 769 bytes --]

Seems my previous message didn't get through, sending it again.

On 12/3/07, Marcel Holtmann <marcel@holtmann.org > wrote:
>
>
> not sure what that means,


Thanks for the reply, i basically want to stream audio over a network of
Bluetooth enabled devices in a piconet. I had a look at PAN profile. On the
kernel side i saw BNEP has multicast filter support. So i figured that
software has multicast support, its the hardware that should support
multicast support.

 but the way of multicast that you think of is
> actually not supported by Bluetooth.



Ok ..so right now its not supported. Is there any plan of supporting it ?
Does it fall under any particular profile?. I would love to have this
working and contribute sumthing towards open source .



thanks,
 nel

[-- Attachment #1.2: Type: text/html, Size: 1323 bytes --]

[-- Attachment #2: Type: text/plain, Size: 309 bytes --]

-------------------------------------------------------------------------
SF.Net email is sponsored by: The Future of Linux Business White Paper
from Novell.  From the desktop to the data center, Linux is going
mainstream.  Let it simplify your IT future.
http://altfarm.mediaplex.com/ad/ck/8857-50307-18918-4

[-- Attachment #3: Type: text/plain, Size: 164 bytes --]

_______________________________________________
Bluez-users mailing list
Bluez-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/bluez-users

Re: [Bluez-users] Support for multicasting in bluetooth

[Nel D]

[-- Attachment #1.1: Type: text/plain, Size: 881 bytes --]

It would be real nice if i get any leads on this topic. Somehow my google
searches aren't giving me the result that would be helpful .


On 12/3/07, Marcel Holtmann < marcel@holtmann.org > wrote:
>
> >
> > not sure what that means,
>
>
> Thanks for the reply, i basically want to stream audio over a network of
> Bluetooth enabled devices in a piconet. I had a look at PAN profile. On the
> kernel side i saw BNEP has multicast filter support. So i figured that
> software has multicast support, its the hardware that should support
> multicast support.
>
>  but the way of multicast that you think of is
> > actually not supported by Bluetooth.
>
>
>
> Ok ..so right now its not supported. Is there any plan of supporting it ?
> Does it fall under any particular profile?. I would love to have this
> working and contribute sumthing towards open source .
>
>
>
> thanks,
>  nel
>

[-- Attachment #1.2: Type: text/html, Size: 1697 bytes --]

[-- Attachment #2: Type: text/plain, Size: 277 bytes --]

-------------------------------------------------------------------------
SF.Net email is sponsored by:
Check out the new SourceForge.net Marketplace.
It's the best place to buy or sell services for
just about anything Open Source.
http://sourceforge.net/services/buy/index.php

[-- Attachment #3: Type: text/plain, Size: 164 bytes --]

_______________________________________________
Bluez-users mailing list
Bluez-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/bluez-users