[Bluez-devel] Serial comunication RFCOMM

[Bluez-devel] Serial comunication RFCOMM

[Victor Andres]

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Hi. I'm a new developer of bluez API. I would like that someone say if is posible to do I want.

Is it posible to link (bluetooth) multiple devices to mi PC using Linux and Bluez stack (using multple usb-bluetooth adapter if it's necesary)?

I want link my PC with multiples (more than 7) GPS bluetooth (so I can't do it with windows stack), to receive the NMEA sentences and manipulate then (get the latitud, longitud, speed ...).

Thanks.
Best regards.

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Re: [Bluez-devel] Serial comunication RFCOMM

[Peter Wippich]

Hi Victor, 

On Mon, 3 Jul 2006, Victor Andres wrote:

> Hi. I'm a new developer of bluez API. I would like that someone say if 
> is posible to do I want.
> 
> Is it posible to link (bluetooth) multiple devices to mi PC using Linux 
> and Bluez stack (using multple usb-bluetooth adapter if it's necesary)?
> 
> I want link my PC with multiples (more than 7) GPS bluetooth (so I 
> can't do it with windows stack), to receive the NMEA sentences and 
> manipulate then (get the latitud, longitud, speed ...).

I don't see anything which should prevent you from doing so. 
And as far as I know BlueZ currently is the only Bluetooth Stack which 
supports multiple HCI devices. 

Ciao, 

Peter 



|       Peter Wippich                   Voice: +49 30 46776411          |
|       G&W Instruments GmbH            fax:   +49 30 46776419          |
|       Gustav-Meyer-Allee 25, Geb. 12  Email: pewi@gw-instruments.de   |
|       D-13355 Berlin  / Germany                                       |


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Re: [Bluez-devel] Serial comunication RFCOMM

[Claudio Takahasi]

Hi Victor,

The BlueZ D-Bus API provides an easy way to handle multiple local
adapters based on D-Bus paths. eg:
/org/bluez/hci0
/org/bluez/hci1
....


Check the dbus-api.txt file and the dbus-test python script for more
information.

BR,
Claudio.

On 7/3/06, Peter Wippich <pewi@gw-instruments.de> wrote:
>
> Hi Victor,
>
> On Mon, 3 Jul 2006, Victor Andres wrote:
>
> > Hi. I'm a new developer of bluez API. I would like that someone say if
> > is posible to do I want.
> >
> > Is it posible to link (bluetooth) multiple devices to mi PC using Linux
> > and Bluez stack (using multple usb-bluetooth adapter if it's necesary)?
> >
> > I want link my PC with multiples (more than 7) GPS bluetooth (so I
> > can't do it with windows stack), to receive the NMEA sentences and
> > manipulate then (get the latitud, longitud, speed ...).
>
> I don't see anything which should prevent you from doing so.
> And as far as I know BlueZ currently is the only Bluetooth Stack which
> supports multiple HCI devices.
>
> Ciao,
>
> Peter
>
>
>
> |       Peter Wippich                   Voice: +49 30 46776411          |
> |       G&W Instruments GmbH            fax:   +49 30 46776419          |
> |       Gustav-Meyer-Allee 25, Geb. 12  Email: pewi@gw-instruments.de   |
> |       D-13355 Berlin  / Germany                                       |
>
>
> Using Tomcat but need to do more? Need to support web services, security?
> Get stuff done quickly with pre-integrated technology to make your job easier
> Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
> http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
> _______________________________________________
> Bluez-devel mailing list
> Bluez-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/bluez-devel
>


-- 
---------------------------------------------------------
Claudio Takahasi
Instituto Nokia de Tecnologia - INdT

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Re: [Bluez-devel] Serial comunication RFCOMM

[Victor Andres]

Thanks!

But I can't find the dbus-api.txt, and I really don't know what's d-bus. I 
have done some examples using rfcomm from the shell. I actually use Ubuntu, 
and I have installed bluez from apt-get. Is this the correct way?


Thanks. Very pleased.



----- Original Message ----- 
From: "Claudio Takahasi" <cktakahasi@gmail.com>
To: "BlueZ development" <bluez-devel@lists.sourceforge.net>
Sent: Monday, July 03, 2006 2:46 PM
Subject: Re: [Bluez-devel] Serial comunication RFCOMM


> Hi Victor,
>
> The BlueZ D-Bus API provides an easy way to handle multiple local
> adapters based on D-Bus paths. eg:
> /org/bluez/hci0
> /org/bluez/hci1
> ....
>
>
> Check the dbus-api.txt file and the dbus-test python script for more
> information.
>
> BR,
> Claudio.
>
> On 7/3/06, Peter Wippich <pewi@gw-instruments.de> wrote:
>>
>> Hi Victor,
>>
>> On Mon, 3 Jul 2006, Victor Andres wrote:
>>
>> > Hi. I'm a new developer of bluez API. I would like that someone say if
>> > is posible to do I want.
>> >
>> > Is it posible to link (bluetooth) multiple devices to mi PC using Linux
>> > and Bluez stack (using multple usb-bluetooth adapter if it's necesary)?
>> >
>> > I want link my PC with multiples (more than 7) GPS bluetooth (so I
>> > can't do it with windows stack), to receive the NMEA sentences and
>> > manipulate then (get the latitud, longitud, speed ...).
>>
>> I don't see anything which should prevent you from doing so.
>> And as far as I know BlueZ currently is the only Bluetooth Stack which
>> supports multiple HCI devices.
>>
>> Ciao,
>>
>> Peter
>>
>>
>>
>> |       Peter Wippich                   Voice: +49 30 46776411          |
>> |       G&W Instruments GmbH            fax:   +49 30 46776419          |
>> |       Gustav-Meyer-Allee 25, Geb. 12  Email: pewi@gw-instruments.de   |
>> |       D-13355 Berlin  / Germany                                       |
>>
>>
>> Using Tomcat but need to do more? Need to support web services, security?
>> Get stuff done quickly with pre-integrated technology to make your job 
>> easier
>> Download IBM WebSphere Application Server v.1.0.1 based on Apache 
>> Geronimo
>> http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
>> _______________________________________________
>> Bluez-devel mailing list
>> Bluez-devel@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/bluez-devel
>>
>
>
> -- 
> ---------------------------------------------------------
> Claudio Takahasi
> Instituto Nokia de Tecnologia - INdT
>
> Using Tomcat but need to do more? Need to support web services, security?
> Get stuff done quickly with pre-integrated technology to make your job 
> easier
> Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
> http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
> _______________________________________________
> Bluez-devel mailing list
> Bluez-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/bluez-devel 



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Re: [Bluez-devel] Serial comunication RFCOMM

[Victor Andres]

Can anyone say me how can I develop this kind of APP (a software that let my 
conect more than 7 devices to my PC using SPP profile, and using more than 1 
usb-bluetooth, if it's necesary)?  Do I have to use bluez Rfcomm library 
(ansi C)? Dbus? Actually a know what's dbus, but I don't know how can I 
program using it.

I have test windows vista beta 2 to try conect 2 usb-bluetooth and it's 
failed (it look that this isn't going to be updates by the newer windows 
version ... microsxxxx).

Thanks!




> ----- Original Message ----- 
> From: "Claudio Takahasi" <cktakahasi@gmail.com>
> To: "BlueZ development" <bluez-devel@lists.sourceforge.net>
> Sent: Monday, July 03, 2006 2:46 PM
> Subject: Re: [Bluez-devel] Serial comunication RFCOMM
>
>
>> Hi Victor,
>>
>> The BlueZ D-Bus API provides an easy way to handle multiple local
>> adapters based on D-Bus paths. eg:
>> /org/bluez/hci0
>> /org/bluez/hci1
>> ....
>>
>>
>> Check the dbus-api.txt file and the dbus-test python script for more
>> information.
>>
>> BR,
>> Claudio.
>>
>> On 7/3/06, Peter Wippich <pewi@gw-instruments.de> wrote:
>>>
>>> Hi Victor,
>>>
>>> On Mon, 3 Jul 2006, Victor Andres wrote:
>>>
>>> > Hi. I'm a new developer of bluez API. I would like that someone say if
>>> > is posible to do I want.
>>> >
>>> > Is it posible to link (bluetooth) multiple devices to mi PC using 
>>> > Linux
>>> > and Bluez stack (using multple usb-bluetooth adapter if it's 
>>> > necesary)?
>>> >
>>> > I want link my PC with multiples (more than 7) GPS bluetooth (so I
>>> > can't do it with windows stack), to receive the NMEA sentences and
>>> > manipulate then (get the latitud, longitud, speed ...).
>>>
>>> I don't see anything which should prevent you from doing so.
>>> And as far as I know BlueZ currently is the only Bluetooth Stack which
>>> supports multiple HCI devices.
>>>
>>> Ciao,
>>>
>>> Peter
>>>
>>>
>>>
>>> |       Peter Wippich                   Voice: +49 30 46776411 
>>> |
>>> |       G&W Instruments GmbH            fax:   +49 30 46776419 
>>> |
>>> |       Gustav-Meyer-Allee 25, Geb. 12  Email: pewi@gw-instruments.de 
>>> |
>>> |       D-13355 Berlin  / Germany 
>>> |
>>>
>>>



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Re: [Bluez-devel] Serial comunication RFCOMM

[Claudio Takahasi]

Hi Victor,

Regarding the dbus-api.txt, you can get it from the BlueZ anonymous CVS
http://www.bluez.org/cvs.html

On 7/4/06, Victor Andres <victor@cymonline.com> wrote:
> Can anyone say me how can I develop this kind of APP (a software that let my
> conect more than 7 devices to my PC using SPP profile, and using more than 1
> usb-bluetooth, if it's necesary)?
[Claudio Takahasi]
just one is enough

Do I have to use bluez Rfcomm library
> (ansi C)? Dbus? Actually a know what's dbus, but I don't know how can I
> program using it.
[Claudio Takahasi]
D-Bus RFCOMM and SDP interfaces are experimental. If you want, you can
enable it and check if it works :-) There is a python test
script(hcid/dbus-test) and an app that I developed for testing
purpose, check if it can help you:
http://extindt01.indt.org/connectivity/bluez/gbluezconf-00.30.tar.gz

Regarding SDP, only the client side is available. Currently, you can
query some services, but you can't register a RFCOMM based service.

If you don't want use D-Bus, check openobex library, gnome-bluetooth
or kde-bluetooth.

BR,
Claudio.

>
> I have test windows vista beta 2 to try conect 2 usb-bluetooth and it's
> failed (it look that this isn't going to be updates by the newer windows
> version ... microsxxxx).
>
> Thanks!
>
>
>
>
> > ----- Original Message -----
> > From: "Claudio Takahasi" <cktakahasi@gmail.com>
> > To: "BlueZ development" <bluez-devel@lists.sourceforge.net>
> > Sent: Monday, July 03, 2006 2:46 PM
> > Subject: Re: [Bluez-devel] Serial comunication RFCOMM
> >
> >
> >> Hi Victor,
> >>
> >> The BlueZ D-Bus API provides an easy way to handle multiple local
> >> adapters based on D-Bus paths. eg:
> >> /org/bluez/hci0
> >> /org/bluez/hci1
> >> ....
> >>
> >>
> >> Check the dbus-api.txt file and the dbus-test python script for more
> >> information.
> >>
> >> BR,
> >> Claudio.
> >>
> >> On 7/3/06, Peter Wippich <pewi@gw-instruments.de> wrote:
> >>>
> >>> Hi Victor,
> >>>
> >>> On Mon, 3 Jul 2006, Victor Andres wrote:
> >>>
> >>> > Hi. I'm a new developer of bluez API. I would like that someone say if
> >>> > is posible to do I want.
> >>> >
> >>> > Is it posible to link (bluetooth) multiple devices to mi PC using
> >>> > Linux
> >>> > and Bluez stack (using multple usb-bluetooth adapter if it's
> >>> > necesary)?
> >>> >
> >>> > I want link my PC with multiples (more than 7) GPS bluetooth (so I
> >>> > can't do it with windows stack), to receive the NMEA sentences and
> >>> > manipulate then (get the latitud, longitud, speed ...).
> >>>
> >>> I don't see anything which should prevent you from doing so.
> >>> And as far as I know BlueZ currently is the only Bluetooth Stack which
> >>> supports multiple HCI devices.
> >>>
> >>> Ciao,
> >>>
> >>> Peter
> >>>
> >>>
> >>>
> >>> |       Peter Wippich                   Voice: +49 30 46776411
> >>> |
> >>> |       G&W Instruments GmbH            fax:   +49 30 46776419
> >>> |
> >>> |       Gustav-Meyer-Allee 25, Geb. 12  Email: pewi@gw-instruments.de
> >>> |
> >>> |       D-13355 Berlin  / Germany
> >>> |
> >>>
> >>>
>
>
>
> Using Tomcat but need to do more? Need to support web services, security?
> Get stuff done quickly with pre-integrated technology to make your job easier
> Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
> http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
> _______________________________________________
> Bluez-devel mailing list
> Bluez-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/bluez-devel
>


-- 
---------------------------------------------------------
Claudio Takahasi
Instituto Nokia de Tecnologia - INdT

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Re: [Bluez-devel] Serial comunication RFCOMM

[Claudio Takahasi]

Hi Victor,

sorry. Just fixing a wrong answer. I read the question quickly without
pay attention exactly what you asked :-) According with the spec you
can have up to 7 ACL connections. Between two BT devices, the RFCOMM
protocol supports up to 60 simultaneous connections , I never tested
and probably linux should have a limitation. I guess Marcel can answer
this better.

Br,
Claudio.

On 7/4/06, Claudio Takahasi <cktakahasi@gmail.com> wrote:
> Hi Victor,
>
> Regarding the dbus-api.txt, you can get it from the BlueZ anonymous CVS
> http://www.bluez.org/cvs.html
>
> On 7/4/06, Victor Andres <victor@cymonline.com> wrote:
> > Can anyone say me how can I develop this kind of APP (a software that let my
> > conect more than 7 devices to my PC using SPP profile, and using more than 1
> > usb-bluetooth, if it's necesary)?
> [Claudio Takahasi]
> just one is enough
>
> Do I have to use bluez Rfcomm library
> > (ansi C)? Dbus? Actually a know what's dbus, but I don't know how can I
> > program using it.
> [Claudio Takahasi]
> D-Bus RFCOMM and SDP interfaces are experimental. If you want, you can
> enable it and check if it works :-) There is a python test
> script(hcid/dbus-test) and an app that I developed for testing
> purpose, check if it can help you:
> http://extindt01.indt.org/connectivity/bluez/gbluezconf-00.30.tar.gz
>
> Regarding SDP, only the client side is available. Currently, you can
> query some services, but you can't register a RFCOMM based service.
>
> If you don't want use D-Bus, check openobex library, gnome-bluetooth
> or kde-bluetooth.
>
> BR,
> Claudio.
>
> >
> > I have test windows vista beta 2 to try conect 2 usb-bluetooth and it's
> > failed (it look that this isn't going to be updates by the newer windows
> > version ... microsxxxx).
> >
> > Thanks!
> >
> >
> >
> >
> > > ----- Original Message -----
> > > From: "Claudio Takahasi" <cktakahasi@gmail.com>
> > > To: "BlueZ development" <bluez-devel@lists.sourceforge.net>
> > > Sent: Monday, July 03, 2006 2:46 PM
> > > Subject: Re: [Bluez-devel] Serial comunication RFCOMM
> > >
> > >
> > >> Hi Victor,
> > >>
> > >> The BlueZ D-Bus API provides an easy way to handle multiple local
> > >> adapters based on D-Bus paths. eg:
> > >> /org/bluez/hci0
> > >> /org/bluez/hci1
> > >> ....
> > >>
> > >>
> > >> Check the dbus-api.txt file and the dbus-test python script for more
> > >> information.
> > >>
> > >> BR,
> > >> Claudio.
> > >>
> > >> On 7/3/06, Peter Wippich <pewi@gw-instruments.de> wrote:
> > >>>
> > >>> Hi Victor,
> > >>>
> > >>> On Mon, 3 Jul 2006, Victor Andres wrote:
> > >>>
> > >>> > Hi. I'm a new developer of bluez API. I would like that someone say if
> > >>> > is posible to do I want.
> > >>> >
> > >>> > Is it posible to link (bluetooth) multiple devices to mi PC using
> > >>> > Linux
> > >>> > and Bluez stack (using multple usb-bluetooth adapter if it's
> > >>> > necesary)?
> > >>> >
> > >>> > I want link my PC with multiples (more than 7) GPS bluetooth (so I
> > >>> > can't do it with windows stack), to receive the NMEA sentences and
> > >>> > manipulate then (get the latitud, longitud, speed ...).
> > >>>
> > >>> I don't see anything which should prevent you from doing so.
> > >>> And as far as I know BlueZ currently is the only Bluetooth Stack which
> > >>> supports multiple HCI devices.
> > >>>
> > >>> Ciao,
> > >>>
> > >>> Peter
> > >>>
> > >>>
> > >>>
> > >>> |       Peter Wippich                   Voice: +49 30 46776411
> > >>> |
> > >>> |       G&W Instruments GmbH            fax:   +49 30 46776419
> > >>> |
> > >>> |       Gustav-Meyer-Allee 25, Geb. 12  Email: pewi@gw-instruments.de
> > >>> |
> > >>> |       D-13355 Berlin  / Germany
> > >>> |
> > >>>
> > >>>
> >
> >
> >
> > Using Tomcat but need to do more? Need to support web services, security?
> > Get stuff done quickly with pre-integrated technology to make your job easier
> > Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
> > http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
> > _______________________________________________
> > Bluez-devel mailing list
> > Bluez-devel@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/bluez-devel
> >
>
>
> --
> ---------------------------------------------------------
> Claudio Takahasi
> Instituto Nokia de Tecnologia - INdT
>


-- 
---------------------------------------------------------
Claudio Takahasi
Instituto Nokia de Tecnologia - INdT

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Re: [Bluez-devel] Serial comunication RFCOMM

[Marcel Holtmann]

Hi Claudio,

> sorry. Just fixing a wrong answer. I read the question quickly without
> pay attention exactly what you asked :-) According with the spec you
> can have up to 7 ACL connections. Between two BT devices, the RFCOMM
> protocol supports up to 60 simultaneous connections , I never tested
> and probably linux should have a limitation. I guess Marcel can answer
> this better.

there are no limitations. Except that it is 30 in one and 30 in the
other direction for RFCOMM. For L2CAP you can even do more connections
as long as the kernel has memory to store them.

Regards

Marcel



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Re: [Bluez-devel] Serial comunication RFCOMM

[Victor Andres]

Well, I really want to conect more than 7 devices to my Pc, using 
bluetooth-usb adapters (one, or more than one adapters). And the profile a 
need to use is SPP, serial port. the devices are gps-gluetooth.

Where can I find a exaple about how can I do it?

Thanks, and excuse my persistance.




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Re: [Bluez-devel] Serial comunication RFCOMM

[Marcel Holtmann]

Hi Victor,

> Well, I really want to conect more than 7 devices to my Pc, using 
> bluetooth-usb adapters (one, or more than one adapters). And the profile a 
> need to use is SPP, serial port. the devices are gps-gluetooth.
> 
> Where can I find a exaple about how can I do it?

you don't need anything special. You can easily connect as many devices
as you like. However if you wanna have more than 7 active ACL links then
you need more dongles. If you use more than one dongle, make sure to
specify always the source interface (dongle). All BlueZ tools accept the
parameter --device (-i hci0 for example).

Regards

Marcel



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Re: [Bluez-devel] Serial comunication RFCOMM

[Peter Wippich]

Hello Victor, 

On Wed, 5 Jul 2006, Victor Andres wrote:

> Well, I really want to conect more than 7 devices to my Pc, using 
> bluetooth-usb adapters (one, or more than one adapters). And the profile a 
> need to use is SPP, serial port. the devices are gps-gluetooth.
> 
> Where can I find a exaple about how can I do it?
> 
> Thanks, and excuse my persistance.
Well, you have to choices (maybe 3 if DBUS is one, haven't checked). 
You may use either rfcomm ttys or direct rfcomm socket programming. For 
tty just bind all remote devices (man rfcomm). Than connect by openning 
the rfcomm ttys and you can read the GPS data from teh tty like a normal 
serial connection. 

For an example on how to use direct socket programming you may have a look 
at dund or some other examples. 

Ciao,

Peter

|       Peter Wippich                   Voice: +49 30 46776411          |
|       G&W Instruments GmbH            fax:   +49 30 46776419          |
|       Gustav-Meyer-Allee 25, Geb. 12  Email: pewi@gw-instruments.de   |
|       D-13355 Berlin  / Germany                                       |


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Re: [Bluez-devel] Serial comunication RFCOMM

[Peter Wippich]

Hi Marcel, 

On Wed, 5 Jul 2006, Marcel Holtmann wrote:

> specify always the source interface (dongle). All BlueZ tools accept the
> parameter --device (-i hci0 for example).
Obvious :-). 

Sorry, can't resist 

Peter 



|       Peter Wippich                   Voice: +49 30 46776411          |
|       G&W Instruments GmbH            fax:   +49 30 46776419          |
|       Gustav-Meyer-Allee 25, Geb. 12  Email: pewi@gw-instruments.de   |
|       D-13355 Berlin  / Germany                                       |


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Re: [Bluez-devel] Serial comunication RFCOMM

[Marcel Holtmann]

Hi Peter,

> > specify always the source interface (dongle). All BlueZ tools accept the
> > parameter --device (-i hci0 for example).
> Obvious :-). 
> 
> Sorry, can't resist 

yeah. This one is funny. It is legacy. The -i was for interface as used
by many IP related tools and --device for the actual Bluetooth device.
We screwed that up, but it is consistent. Nowadays I would refer to
adapter and not devices for the local ones.

Regards

Marcel



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