RE: [Bluez-devel] bluetooth services and profiles

RE: [Bluez-devel] bluetooth services and profiles

[Jun Sun]

Thanks for the explanation on profiles.  It helps quite a bit.

Do you know how we can supply those phone services with bluez?

For example, the web page http://mobile.linux.pt/p800/ listed the
following services for P800:

earth:~# sdptool browse 00:0A:D9:17:7F:51
Browsing 00:0A:D9:17:7F:51 ...
Service Name: Voice gateway
Service Description: Voice gateway
Service Provider: Sony Ericsson
Service RecHandle: 0x10000
Service Class ID List:
  "Headset Audio Gateway" (0x1112)
  "Generic Audio" (0x1203)
Protocol Descriptor List:
  "L2CAP" (0x0100)
  "RFCOMM" (0x0003)
    Channel: 8
Language Base Attr List:
  code_ISO639: 0x656e
  encoding:    0x6a
  base_offset: 0x100
Profile Descriptor List:
  "Headset" (0x1108)
    Version: 0x0100

Service Name: Dial-up Networking
Service Description: Dial-up Networking
Service Provider: Sony Ericsson
Service RecHandle: 0x10002
Service Class ID List:
  "Dialup Networking" (0x1103)
Protocol Descriptor List:
  "L2CAP" (0x0100)
  "RFCOMM" (0x0003)
    Channel: 2
Language Base Attr List:
  code_ISO639: 0x656e
  encoding:    0x6a
  base_offset: 0x100
Profile Descriptor List:
  "Dialup Networking" (0x1103)
    Version: 0x0100

Service Name: OBEX Object Push
Service RecHandle: 0x10003
Service Class ID List:
  "OBEX Object Push" (0x1105)
Protocol Descriptor List:
  "L2CAP" (0x0100)
  "RFCOMM" (0x0003)
    Channel: 3
  "OBEX" (0x0008)
Profile Descriptor List:
  "OBEX Object Push" (0x1105)
    Version: 0x0100

Service Name: Bluetooth Serial Port
Service Description: Bluetooth Serial Port
Service Provider: Symbian Ltd.
Service RecHandle: 0x10005
Service Class ID List:
  "Serial Port" (0x1101)
Protocol Descriptor List:
  "L2CAP" (0x0100)
  "RFCOMM" (0x0003)
    Channel: 1
Language Base Attr List:
  code_ISO639: 0x656e
  encoding:    0x6a
  base_offset: 0x100


Which part of bluetooth spec covers such service discovery?  Can I
implement similar services on top of bluez stack?  (Imagine the scenario
if I put Linux/bluez into a phone ...)

Any pointers are appreciated.  Thanks in advance.

Jun
=20



> -----Original Message-----
> From: Marcel Holtmann [mailto:marcel@holtmann.org]
> Sent: Tuesday, October 26, 2004 2:37 PM
> To: Jun Sun
> Cc: BlueZ Mailing List
> Subject: Re: [Bluez-devel] bluetooth services and profiles
>=20
> Hi Jun,
>=20
> > I saw a lot of web pages about setting up a linux box talking with a
> > Bluetooth phone.  Typically you would discover a lot of services
offered
> > by the phone.
> >
> > I am wondering what happens if you hook linux box with a second
linux
> > box.  In other words what kind of services will you find on the
Linux
> > box?  What has to be done to support those similar services on
bluez?
> >
> > Are they related to the Bluetooth profiles?  I have not seen much
about
> > Bluetooth profile support in bluez.  Do they exist?
>=20
> a Bluetooth profile is like an application. If you wanna have support
> for a specific profile in BlueZ, you need to write that application.
> However for most common Bluetooth profiles these applications exists
and
> you only have to start them.
>=20
> If you think that you always need to follow a specific profile for
data
> exchange between two Bluetooth devices, then you are wrong. BlueZ
gives
> you the power to do everything you like with Bluetooth.
>=20
> > The reason I am asking this is because there are now phones powered
by
> > Linux.  I think they support Bluetooth but I don't know if they are
> > using bluez.  I like to get an understanding on how to provide those
> > Bluetooth phone services on Linux with bluez.
>=20
> I don't know either. Maybe yes, maybe no. But as mentioned above a
> profile is the same as an application.
>=20
> Regards
>=20
> Marcel
>=20
>=20

RE: [Bluez-devel] bluetooth services and profiles

[Marcel Holtmann]

Hi Jun,

> Thanks for the explanation on profiles.  It helps quite a bit.
> 
> Do you know how we can supply those phone services with bluez?
> 
> For example, the web page http://mobile.linux.pt/p800/ listed the
> following services for P800:
> 
> earth:~# sdptool browse 00:0A:D9:17:7F:51
> Browsing 00:0A:D9:17:7F:51 ...
> Service Name: Voice gateway
> Service Description: Voice gateway
> Service Provider: Sony Ericsson
> Service RecHandle: 0x10000
> Service Class ID List:
>   "Headset Audio Gateway" (0x1112)
>   "Generic Audio" (0x1203)
> Protocol Descriptor List:
>   "L2CAP" (0x0100)
>   "RFCOMM" (0x0003)
>     Channel: 8
> Language Base Attr List:
>   code_ISO639: 0x656e
>   encoding:    0x6a
>   base_offset: 0x100
> Profile Descriptor List:
>   "Headset" (0x1108)
>     Version: 0x0100
> 
> Service Name: Dial-up Networking
> Service Description: Dial-up Networking
> Service Provider: Sony Ericsson
> Service RecHandle: 0x10002
> Service Class ID List:
>   "Dialup Networking" (0x1103)
> Protocol Descriptor List:
>   "L2CAP" (0x0100)
>   "RFCOMM" (0x0003)
>     Channel: 2
> Language Base Attr List:
>   code_ISO639: 0x656e
>   encoding:    0x6a
>   base_offset: 0x100
> Profile Descriptor List:
>   "Dialup Networking" (0x1103)
>     Version: 0x0100
> 
> Service Name: OBEX Object Push
> Service RecHandle: 0x10003
> Service Class ID List:
>   "OBEX Object Push" (0x1105)
> Protocol Descriptor List:
>   "L2CAP" (0x0100)
>   "RFCOMM" (0x0003)
>     Channel: 3
>   "OBEX" (0x0008)
> Profile Descriptor List:
>   "OBEX Object Push" (0x1105)
>     Version: 0x0100
> 
> Service Name: Bluetooth Serial Port
> Service Description: Bluetooth Serial Port
> Service Provider: Symbian Ltd.
> Service RecHandle: 0x10005
> Service Class ID List:
>   "Serial Port" (0x1101)
> Protocol Descriptor List:
>   "L2CAP" (0x0100)
>   "RFCOMM" (0x0003)
>     Channel: 1
> Language Base Attr List:
>   code_ISO639: 0x656e
>   encoding:    0x6a
>   base_offset: 0x100
> 
> 
> Which part of bluetooth spec covers such service discovery?  Can I
> implement similar services on top of bluez stack?  (Imagine the scenario
> if I put Linux/bluez into a phone ...)

this services are all RFCOMM based and so you need to write a RFCOMM
server application for each of them. It must listen on the specific
channel and register an SDP record. And from that point it is only
socket programming. It think the pand source code is the easiest to
understand how this works.

Regards

Marcel




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[Bluez-devel] bluetooth services and profiles

[Jun Sun]

I am relatively new to Bluetooth and bluez stack.  Sorry if these
questions sound dumb. :)

I saw a lot of web pages about setting up a linux box talking with a
Bluetooth phone.  Typically you would discover a lot of services offered
by the phone.

I am wondering what happens if you hook linux box with a second linux
box.  In other words what kind of services will you find on the Linux
box?  What has to be done to support those similar services on bluez?=20

Are they related to the Bluetooth profiles?  I have not seen much about
Bluetooth profile support in bluez.  Do they exist?

The reason I am asking this is because there are now phones powered by
Linux.  I think they support Bluetooth but I don't know if they are
using bluez.  I like to get an understanding on how to provide those
Bluetooth phone services on Linux with bluez.

Thanks in advance.

Jun



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Re: [Bluez-devel] bluetooth services and profiles

[Marcel Holtmann]

Hi Jun,

> I saw a lot of web pages about setting up a linux box talking with a
> Bluetooth phone.  Typically you would discover a lot of services offered
> by the phone.
> 
> I am wondering what happens if you hook linux box with a second linux
> box.  In other words what kind of services will you find on the Linux
> box?  What has to be done to support those similar services on bluez? 
> 
> Are they related to the Bluetooth profiles?  I have not seen much about
> Bluetooth profile support in bluez.  Do they exist?

a Bluetooth profile is like an application. If you wanna have support
for a specific profile in BlueZ, you need to write that application.
However for most common Bluetooth profiles these applications exists and
you only have to start them.

If you think that you always need to follow a specific profile for data
exchange between two Bluetooth devices, then you are wrong. BlueZ gives
you the power to do everything you like with Bluetooth.

> The reason I am asking this is because there are now phones powered by
> Linux.  I think they support Bluetooth but I don't know if they are
> using bluez.  I like to get an understanding on how to provide those
> Bluetooth phone services on Linux with bluez.

I don't know either. Maybe yes, maybe no. But as mentioned above a
profile is the same as an application.

Regards

Marcel




-------------------------------------------------------
This SF.Net email is sponsored by:
Sybase ASE Linux Express Edition - download now for FREE
LinuxWorld Reader's Choice Award Winner for best database on Linux.
http://ads.osdn.com/?ad_id=5588&alloc_id=12065&op=click
_______________________________________________
Bluez-devel mailing list
Bluez-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/bluez-devel