[Bluez-users] BlueZ on ETRAX 100LX devboard 82+

[Bluez-users] BlueZ on ETRAX 100LX devboard 82+

[Naved Aziz]

[-- Attachment #1: Type: text/plain, Size: 1135 bytes --]

Hi,
 
I am currently working on the Axis devboard 82+ for a project that requires bluetooth support on the board.  The kernel for the SDK (obtained from the axis developer website) has support for BlueZ, and I have been able to compile the kernel and flash the image onto the board without any errors (the linux kernel used is 2.4.29).  The basic stack functions like sdptool, hcitool, l2ping, work fine. 
 
However, the problem is with rfcomm.  I cannot connect to any remote devices (I have tried with Nokia 6600), attempting which gives the "Can't create RFCOMM socket: resource currently unavailable"), cannot bind ("Can't create device list: Operation not supported"), cannot release, etc.  Has anyone faced this problem with RFCOMM on this board?  I have also tried porting Axis's openBT stack, which I could not compile into the kernel at all.
 
I am totally new at Linux, and would greatly appreciate any help that someone can provide.
 
Sincerely and desperately,
 
Naved

__________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 
http://mail.yahoo.com 

[-- Attachment #2: Type: text/html, Size: 1326 bytes --]

Re: [Bluez-users] BlueZ on ETRAX 100LX devboard 82+

[Marco Trudel]

Hello

There're (a lot) of mails about this topic in the archive. I don't 
remember directly how they ended, but if you've to program the rfcomm 
stuff yourself anyway, you're probably best of if you do it from beginning.
I had more or less the same problem when I started. I never was able to 
use the rfcomm utility, it never worked for me. So I programmed 
everything myself from the beginning on...

regards
Marco

Naved Aziz wrote:
> Hi,
>  
> I am currently working on the Axis devboard 82+ for a project that 
> requires bluetooth support on the board.  The kernel for the SDK 
> (obtained from the axis developer website) has support for BlueZ, and I 
> have been able to compile the kernel and flash the image onto the board 
> without any errors (the linux kernel used is 2.4.29).  The basic stack 
> functions like sdptool, hcitool, l2ping, work fine. 
>  
> However, the problem is with rfcomm.  I cannot connect to any remote 
> devices (I have tried with Nokia 6600), attempting which gives the 
> "Can't create RFCOMM socket: resource currently unavailable"), cannot 
> bind ("Can't create device list: Operation not supported"), cannot 
> release, etc.  Has anyone faced this problem with RFCOMM on this board?  
> I have also tried porting Axis's openBT stack, which I could not compile 
> into the kernel at all.
>  
> I am totally new at Linux, and would greatly appreciate any help that 
> someone can provide.
>  
> Sincerely and desperately,
>  
> Naved
> 
> __________________________________________________
> Do You Yahoo!?
> Tired of spam? Yahoo! Mail has the best spam protection around
> http://mail.yahoo.com
> 



-------------------------------------------------------
This SF.Net email is sponsored by: NEC IT Guy Games.  How far can you shotput
a projector? How fast can you ride your desk chair down the office luge track?
If you want to score the big prize, get to know the little guy.  
Play to win an NEC 61" plasma display: http://www.necitguy.com/?r=20
_______________________________________________
Bluez-users mailing list
Bluez-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/bluez-users

Re: [Bluez-users] BlueZ on ETRAX 100LX devboard 82+

[Naved Aziz]

[-- Attachment #1: Type: text/plain, Size: 3153 bytes --]

Hi Marco,
 
Thanks for your reply; I really appreciate it =)
 
So you're saying that you programmed, as in write the code, for the rfcomm protocol, while keeping the other (working) BlueZ stuff (meaning the other utilities like sdptool) on the board?  I will eventually have to write some applcation using rfcomm in order to exchange files and stuff with phones, but now, I am actually at a loss as to how to progress.  As a cherry on top, it has been only a couple of weeks since I have begun working with Linux.  
 
Marco, it would mean a lot to me if you could provide me with some guidance as to how to get rfcomm working on the devboard 82+.  I am a total newbie at this, so if you could give me a step-by-step guide as to how to set up the Axis board with rfcomm support, I would be forever in your debt =)
 
Thanks and sincerely,
 
Naved  

Marco Trudel <mtrudel@gmx.ch> wrote:
Hello

There're (a lot) of mails about this topic in the archive. I don't 
remember directly how they ended, but if you've to program the rfcomm 
stuff yourself anyway, you're probably best of if you do it from beginning.
I had more or less the same problem when I started. I never was able to 
use the rfcomm utility, it never worked for me. So I programmed 
everything myself from the beginning on...

regards
Marco

Naved Aziz wrote:
> Hi,
> 
> I am currently working on the Axis devboard 82+ for a project that 
> requires bluetooth support on the board. The kernel for the SDK 
> (obtained from the axis developer website) has support for BlueZ, and I 
> have been able to compile the kernel and flash the image onto the board 
> without any errors (the linux kernel used is 2.4.29). The basic stack 
> functions like sdptool, hcitool, l2ping, work fine. 
> 
> However, the problem is with rfcomm. I cannot connect to any remote 
> devices (I have tried with Nokia 6600), attempting which gives the 
> "Can't create RFCOMM socket: resource currently unavailable"), cannot 
> bind ("Can't create device list: Operation not supported"), cannot 
> release, etc. Has anyone faced this problem with RFCOMM on this board? 
> I have also tried porting Axis's openBT stack, which I could not compile 
> into the kernel at all.
> 
> I am totally new at Linux, and would greatly appreciate any help that 
> someone can provide.
> 
> Sincerely and desperately,
> 
> Naved
> 
> __________________________________________________
> Do You Yahoo!?
> Tired of spam? Yahoo! Mail has the best spam protection around
> http://mail.yahoo.com
> 



-------------------------------------------------------
This SF.Net email is sponsored by: NEC IT Guy Games. How far can you shotput
a projector? How fast can you ride your desk chair down the office luge track?
If you want to score the big prize, get to know the little guy. 
Play to win an NEC 61" plasma display: http://www.necitguy.com/?r=20
_______________________________________________
Bluez-users mailing list
Bluez-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/bluez-users

		
---------------------------------
Discover Yahoo!
 Get on-the-go sports scores, stock quotes, news & more. Check it out!

[-- Attachment #2: Type: text/html, Size: 3826 bytes --]

Re: [Bluez-users] BlueZ on ETRAX 100LX devboard 82+

[Marco Trudel]

Hello Naved

> So you're saying that you programmed, as in write the code, for the 
> rfcomm protocol, while keeping the other (working) BlueZ stuff (meaning 
> the other utilities like sdptool) on the board?  I will eventually have 
> to write some applcation using rfcomm in order to exchange files and 
> stuff with phones, but now, I am actually at a loss as to how to 
> progress.  As a cherry on top, it has been only a couple of weeks since 
> I have begun working with Linux. 

Can you explain what you try to reach?

> Marco, it would mean a lot to me if you could provide me with some 
> guidance as to how to get rfcomm working on the devboard 82+.  I am a 
> total newbie at this, so if you could give me a step-by-step guide as to 
> how to set up the Axis board with rfcomm support, I would be forever in 
> your debt =)

Everything works fine. The rfcomm utility creates a device, this creates 
proglems on some systems. But rfcomm isn't broken.


regards
Marco


-------------------------------------------------------
This SF.Net email is sponsored by: NEC IT Guy Games.  How far can you shotput
a projector? How fast can you ride your desk chair down the office luge track?
If you want to score the big prize, get to know the little guy.  
Play to win an NEC 61" plasma display: http://www.necitguy.com/?r=20
_______________________________________________
Bluez-users mailing list
Bluez-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/bluez-users

Re: [Bluez-users] BlueZ on ETRAX 100LX devboard 82+

[Naved Aziz]

Hi,

Basically, these are the steps that I am taking to set
up an SP connection between the Axis board and the
Nokia 6600:

(1) hcid
(2) sdpd
(3) hciconfig hci0 up #set up the bluetooth dongle
(4) hcitool scan  #spot the phone, get the BD address
(5) sdptool browse <BD address> #see services and 
    their corrresponding channels
(6) rfcomm connect /dev/rfcomm0 <BD address> <channel>
    #where, if channel 2 is the one on nokia 6600    
    providing serial port service, I put 2 for
channel.   
    The /dev/rfcomm0 is already created prior to 
    flashing the image onto the board as follows:
    mknod -m 0666 /dev/rfcomm0 c 216 0 

At this point, the phone gives a prompt, asking for a
pin number.  The value in /etc/bluetooth/pin is 1234,
and I have changed the pin_helper in hcid.conf to
refer to a script file called qpin that looks like
this:

#!/bin/sh
#echo "PIN:1234"

This script file that I have created to work with the
pin_helper is stored in the /tmp directory, since this
is the only place where I am allowed to create any
files, etc once an image has been downloaded onto the
board. 

After I type in the pin on the Nokia 6600, there is a
moment of wait, and then, the phone says "unable to
connect", and the board says "can't create socket:
resource temporarily unavailable".

You mentioned that the rfcomm utility creates a device
that causes problems on some systems; how to get
around this?

Thanks in advance for your help.

Naved



 
--- Marco Trudel <mtrudel@gmx.ch> wrote:

> Hello Naved
> 
> > So you're saying that you programmed, as in write
> the code, for the 
> > rfcomm protocol, while keeping the other (working)
> BlueZ stuff (meaning 
> > the other utilities like sdptool) on the board?  I
> will eventually have 
> > to write some applcation using rfcomm in order to
> exchange files and 
> > stuff with phones, but now, I am actually at a
> loss as to how to 
> > progress.  As a cherry on top, it has been only a
> couple of weeks since 
> > I have begun working with Linux. 
> 
> Can you explain what you try to reach?
> 
> > Marco, it would mean a lot to me if you could
> provide me with some 
> > guidance as to how to get rfcomm working on the
> devboard 82+.  I am a 
> > total newbie at this, so if you could give me a
> step-by-step guide as to 
> > how to set up the Axis board with rfcomm support,
> I would be forever in 
> > your debt =)
> 
> Everything works fine. The rfcomm utility creates a
> device, this creates 
> proglems on some systems. But rfcomm isn't broken.
> 
> 
> regards
> Marco
> 
> 
>
-------------------------------------------------------
> This SF.Net email is sponsored by: NEC IT Guy Games.
>  How far can you shotput
> a projector? How fast can you ride your desk chair
> down the office luge track?
> If you want to score the big prize, get to know the
> little guy.  
> Play to win an NEC 61" plasma display:
> http://www.necitguy.com/?r=20
> _______________________________________________
> Bluez-users mailing list
> Bluez-users@lists.sourceforge.net
>
https://lists.sourceforge.net/lists/listinfo/bluez-users
> 



	
		
__________________________________ 
Do you Yahoo!? 
Yahoo! Mail - You care about security. So do we. 
http://promotions.yahoo.com/new_mail


-------------------------------------------------------
This SF.Net email is sponsored by: NEC IT Guy Games.  How far can you shotput
a projector? How fast can you ride your desk chair down the office luge track?
If you want to score the big prize, get to know the little guy.  
Play to win an NEC 61" plasma display: http://www.necitguy.com/?r=20
_______________________________________________
Bluez-users mailing list
Bluez-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/bluez-users

Re: [Bluez-users] BlueZ on ETRAX 100LX devboard 82+

[Marco Trudel]

Hello Naved

Step 3 should automatically be done from hcid.
Step 2 (sdpd), is not needed if you haven't services on the axis board.

I suggest do program step 6 yourself. look at the sources from rfcomm and 
read a socket programming howto. bluez is basically socket programming. 
There are examples in the archive too.
If the problem is with the rfcomm utility, you'll get around it by doing 
this step yourself.


btw, does your script look like:
#!/bin/sh
#echo "PIN:1234"

or like:
#!/bin/sh
echo "PIN:1234"


regards
Marco


Naved Aziz wrote:
> Hi,
> 
> Basically, these are the steps that I am taking to set
> up an SP connection between the Axis board and the
> Nokia 6600:
> 
> (1) hcid
> (2) sdpd
> (3) hciconfig hci0 up #set up the bluetooth dongle
> (4) hcitool scan  #spot the phone, get the BD address
> (5) sdptool browse <BD address> #see services and 
>     their corrresponding channels
> (6) rfcomm connect /dev/rfcomm0 <BD address> <channel>
>     #where, if channel 2 is the one on nokia 6600    
>     providing serial port service, I put 2 for
> channel.   
>     The /dev/rfcomm0 is already created prior to 
>     flashing the image onto the board as follows:
>     mknod -m 0666 /dev/rfcomm0 c 216 0 
> 
> At this point, the phone gives a prompt, asking for a
> pin number.  The value in /etc/bluetooth/pin is 1234,
> and I have changed the pin_helper in hcid.conf to
> refer to a script file called qpin that looks like
> this:
> 
> #!/bin/sh
> #echo "PIN:1234"
> 
> This script file that I have created to work with the
> pin_helper is stored in the /tmp directory, since this
> is the only place where I am allowed to create any
> files, etc once an image has been downloaded onto the
> board. 
> 
> After I type in the pin on the Nokia 6600, there is a
> moment of wait, and then, the phone says "unable to
> connect", and the board says "can't create socket:
> resource temporarily unavailable".
> 
> You mentioned that the rfcomm utility creates a device
> that causes problems on some systems; how to get
> around this?
> 
> Thanks in advance for your help.
> 
> Naved
> 
> 
> 
>  
> --- Marco Trudel <mtrudel@gmx.ch> wrote:
> 
> 
>>Hello Naved
>>
>>
>>>So you're saying that you programmed, as in write
>>
>>the code, for the 
>>
>>>rfcomm protocol, while keeping the other (working)
>>
>>BlueZ stuff (meaning 
>>
>>>the other utilities like sdptool) on the board?  I
>>
>>will eventually have 
>>
>>>to write some applcation using rfcomm in order to
>>
>>exchange files and 
>>
>>>stuff with phones, but now, I am actually at a
>>
>>loss as to how to 
>>
>>>progress.  As a cherry on top, it has been only a
>>
>>couple of weeks since 
>>
>>>I have begun working with Linux. 
>>
>>Can you explain what you try to reach?
>>
>>
>>>Marco, it would mean a lot to me if you could
>>
>>provide me with some 
>>
>>>guidance as to how to get rfcomm working on the
>>
>>devboard 82+.  I am a 
>>
>>>total newbie at this, so if you could give me a
>>
>>step-by-step guide as to 
>>
>>>how to set up the Axis board with rfcomm support,
>>
>>I would be forever in 
>>
>>>your debt =)
>>
>>Everything works fine. The rfcomm utility creates a
>>device, this creates 
>>proglems on some systems. But rfcomm isn't broken.
>>
>>
>>regards
>>Marco
>>
>>
>>
> 
> -------------------------------------------------------
> 
>>This SF.Net email is sponsored by: NEC IT Guy Games.
>> How far can you shotput
>>a projector? How fast can you ride your desk chair
>>down the office luge track?
>>If you want to score the big prize, get to know the
>>little guy.  
>>Play to win an NEC 61" plasma display:
>>http://www.necitguy.com/?r=20
>>_______________________________________________
>>Bluez-users mailing list
>>Bluez-users@lists.sourceforge.net
>>
> 
> https://lists.sourceforge.net/lists/listinfo/bluez-users
> 
> 
> 
> 
> 	
> 		
> __________________________________ 
> Do you Yahoo!? 
> Yahoo! Mail - You care about security. So do we. 
> http://promotions.yahoo.com/new_mail
> 
> 
> -------------------------------------------------------
> This SF.Net email is sponsored by: NEC IT Guy Games.  How far can you shotput
> a projector? How fast can you ride your desk chair down the office luge track?
> If you want to score the big prize, get to know the little guy.  
> Play to win an NEC 61" plasma display: http://www.necitguy.com/?r=20
> _______________________________________________
> Bluez-users mailing list
> Bluez-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/bluez-users
> 
> 


-------------------------------------------------------
This SF.Net email is sponsored by: NEC IT Guy Games.  How far can you shotput
a projector? How fast can you ride your desk chair down the office luge track?
If you want to score the big prize, get to know the little guy.  
Play to win an NEC 61" plasma display: http://www.necitguy.com/?r=20
_______________________________________________
Bluez-users mailing list
Bluez-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/bluez-users

Re: [Bluez-users] BlueZ on ETRAX 100LX devboard 82+

[Naved Aziz]

Hi Marco, 

Thanks for your reply.  The script file I used did not
have echo commented, although I had written it as such
in the email.  Sorry about that.

I think I may have found the problem regarding rfcomm
connect, and as to why it does not work.

Other than /etc and /tmp directories on the Axis
devboard, all the other directories are read-only. 
This is something I also tested out by using mknod in
the /dev directory, which gave me the "Read-only file
system" error.  

Hence, in the main.c file of rfcomm the following
code:

if ((dev = ioctl(sk, RFCOMMCREATEDEV, &req)) < 0) {
		perror("Can't create RFCOMM TTY");
		close(sk);
		return;
}

returns a negative value, since it is trying to create
a device most likely at a place where it has no
permision to do so.  I am very sure that it is this
ioctl() statement that is wreaking havoc: in fact, all
the ioctl() statements that are in main.c cause the
same problem.  

However, I am allowed to create devices before
building an image to flash onto the devboard.  In
fact, I have built such a device in the 

/devboard-R2_00/packages/devices/axis-2.4-R1_0_9/Makefile


with the statement 

$(MKNOD) -m 0666  $(DEV)/rfcomm0    c 216   0

My question is this: instead of creating a device
using ioctl(), do you know how to assign this already
created device to dev in the above if statement?  The
device resides in the /dev directory.  This is a
problem I will face even if I write step(6)
separately, becuase the question of using an already
created device will still come up.

Thanks in advance for your help.

Sincerely,
Naved

--- Marco Trudel <mtrudel@gmx.ch> wrote:

> Hello Naved
> 
> Step 3 should automatically be done from hcid.
> Step 2 (sdpd), is not needed if you haven't services
> on the axis board.
> 
> I suggest do program step 6 yourself. look at the
> sources from rfcomm and 
> read a socket programming howto. bluez is basically
> socket programming. 
> There are examples in the archive too.
> If the problem is with the rfcomm utility, you'll
> get around it by doing 
> this step yourself.
> 
> 
> btw, does your script look like:
> #!/bin/sh
> #echo "PIN:1234"
> 
> or like:
> #!/bin/sh
> echo "PIN:1234"
> 
> 
> regards
> Marco
> 
> 
> Naved Aziz wrote:
> > Hi,
> > 
> > Basically, these are the steps that I am taking to
> set
> > up an SP connection between the Axis board and the
> > Nokia 6600:
> > 
> > (1) hcid
> > (2) sdpd
> > (3) hciconfig hci0 up #set up the bluetooth dongle
> > (4) hcitool scan  #spot the phone, get the BD
> address
> > (5) sdptool browse <BD address> #see services and 
> >     their corrresponding channels
> > (6) rfcomm connect /dev/rfcomm0 <BD address>
> <channel>
> >     #where, if channel 2 is the one on nokia 6600 
>   
> >     providing serial port service, I put 2 for
> > channel.   
> >     The /dev/rfcomm0 is already created prior to 
> >     flashing the image onto the board as follows:
> >     mknod -m 0666 /dev/rfcomm0 c 216 0 
> > 
> > At this point, the phone gives a prompt, asking
> for a
> > pin number.  The value in /etc/bluetooth/pin is
> 1234,
> > and I have changed the pin_helper in hcid.conf to
> > refer to a script file called qpin that looks like
> > this:
> > 
> > #!/bin/sh
> > #echo "PIN:1234"
> > 
> > This script file that I have created to work with
> the
> > pin_helper is stored in the /tmp directory, since
> this
> > is the only place where I am allowed to create any
> > files, etc once an image has been downloaded onto
> the
> > board. 
> > 
> > After I type in the pin on the Nokia 6600, there
> is a
> > moment of wait, and then, the phone says "unable
> to
> > connect", and the board says "can't create socket:
> > resource temporarily unavailable".
> > 
> > You mentioned that the rfcomm utility creates a
> device
> > that causes problems on some systems; how to get
> > around this?
> > 
> > Thanks in advance for your help.
> > 
> > Naved
> > 
> > 
> > 
> >  
> > --- Marco Trudel <mtrudel@gmx.ch> wrote:
> > 
> > 
> >>Hello Naved
> >>
> >>
> >>>So you're saying that you programmed, as in write
> >>
> >>the code, for the 
> >>
> >>>rfcomm protocol, while keeping the other
> (working)
> >>
> >>BlueZ stuff (meaning 
> >>
> >>>the other utilities like sdptool) on the board? 
> I
> >>
> >>will eventually have 
> >>
> >>>to write some applcation using rfcomm in order to
> >>
> >>exchange files and 
> >>
> >>>stuff with phones, but now, I am actually at a
> >>
> >>loss as to how to 
> >>
> >>>progress.  As a cherry on top, it has been only a
> >>
> >>couple of weeks since 
> >>
> >>>I have begun working with Linux. 
> >>
> >>Can you explain what you try to reach?
> >>
> >>
> >>>Marco, it would mean a lot to me if you could
> >>
> >>provide me with some 
> >>
> >>>guidance as to how to get rfcomm working on the
> >>
> >>devboard 82+.  I am a 
> >>
> >>>total newbie at this, so if you could give me a
> >>
> >>step-by-step guide as to 
> >>
> >>>how to set up the Axis board with rfcomm support,
> >>
> >>I would be forever in 
> >>
> >>>your debt =)
> >>
> >>Everything works fine. The rfcomm utility creates
> a
> >>device, this creates 
> >>proglems on some systems. But rfcomm isn't broken.
> >>
> >>
> >>regards
> >>Marco
> >>
> >>
> >>
> > 
> >
>
-------------------------------------------------------
> > 
> >>This SF.Net email is sponsored by: NEC IT Guy
> Games.
> >> How far can you shotput
> >>a projector? How fast can you ride your desk chair
> >>down the office luge track?
> >>If you want to score the big prize, get to know
> the
> >>little guy.  
> >>Play to win an NEC 61" plasma display:
> >>http://www.necitguy.com/?r=20
> >>_______________________________________________
> >>Bluez-users mailing list
> >>Bluez-users@lists.sourceforge.net
> >>
> > 
> >
>
https://lists.sourceforge.net/lists/listinfo/bluez-users
> > 
> > 
> > 
> > 
> > 	
> > 		
> > __________________________________ 
> > Do you Yahoo!? 
> > Yahoo! Mail - You care about security. So do we. 
> > http://promotions.yahoo.com/new_mail
> > 
> > 
> >
>
-------------------------------------------------------
> > This SF.Net email is sponsored by: NEC IT Guy
> Games.  How far can you shotput
> > a projector? How fast can you ride your desk chair
> down the office luge track?
> > If you want to score the big prize, get to know
> the little guy.  
> > Play to win an NEC 61" plasma display:
> http://www.necitguy.com/?r=20
> 
=== message truncated ===


__________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 
http://mail.yahoo.com 


-------------------------------------------------------
This SF.Net email is sponsored by: NEC IT Guy Games.  How far can you shotput
a projector? How fast can you ride your desk chair down the office luge track?
If you want to score the big prize, get to know the little guy.  
Play to win an NEC 61" plasma display: http://www.necitguy.com/?r=20
_______________________________________________
Bluez-users mailing list
Bluez-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/bluez-users

Re: [Bluez-users] BlueZ on ETRAX 100LX devboard 82+

[Marco Trudel]

> My question is this: instead of creating a device
> using ioctl(), do you know how to assign this already
> created device to dev in the above if statement?

no. I never worked with such devices.

> The device resides in the /dev directory.  This is a
> problem I will face even if I write step(6)
> separately

actually no. There's no need for a device, use a socket.

> becuase the question of using an already
> created device will still come up.

what for? not for bluez...


regards
Marco


-------------------------------------------------------
SF.Net email is sponsored by: Discover Easy Linux Migration Strategies
from IBM. Find simple to follow Roadmaps, straightforward articles,
informative Webcasts and more! Get everything you need to get up to
speed, fast. http://ads.osdn.com/?ad_id=7477&alloc_id=16492&op=click
_______________________________________________
Bluez-users mailing list
Bluez-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/bluez-users

Re: [Bluez-users] BlueZ on ETRAX 100LX devboard 82+

[Naved Aziz]

Hi Marco,

Thanks a lot for your help.  I wrote my own program
using rfcomm, and have been able to establish
connections with phones.

I have also been able to write data to phones. 
However, I am currently having trouble reading data
sent from the phone to the board.  

The application running on the phone receives data
from me, displays it, and then echoes it back.

The program I have written is pretty much the same as
the RFCOMM's main.c's cmd_connect function, except now
it receives an argument from the user and sends that
out through a socket once it has connected with a
phone.  This part works fine.  

Just after the write function call, I call read as:

chk_read = read (sk, readbuff, 2);                   

with sk being the file descriptor of the socket
connected to the phone, readbuff being an array of
type unsigned char and size 100, and reading in only 2
characters.  I have earlier initialized readbuff as:

memset (dread, 0, 100);

However, when I send data to the phone and it receives
this data and displays it, once it has sent the data
back to the board, the board does not receive it. 
Rather it waits for data to be received, and once
disconnected displays that chk_read has been assigned
a -1, meaning no data has been read.  I have called
the read function for reading more than 2 characters
(have used readbuff's maximum size, 100), but still no
good.

Any idead what's going wrong here? Any help will be
greatly appreciated.

Thanks and sincerely,

Naved





--- Marco Trudel <mtrudel@gmx.ch> wrote:

> > My question is this: instead of creating a device
> > using ioctl(), do you know how to assign this
> already
> > created device to dev in the above if statement?
> 
> no. I never worked with such devices.
> 
> > The device resides in the /dev directory.  This is
> a
> > problem I will face even if I write step(6)
> > separately
> 
> actually no. There's no need for a device, use a
> socket.
> 
> > becuase the question of using an already
> > created device will still come up.
> 
> what for? not for bluez...
> 
> 
> regards
> Marco
> 
> 
>
-------------------------------------------------------
> SF.Net email is sponsored by: Discover Easy Linux
> Migration Strategies
> from IBM. Find simple to follow Roadmaps,
> straightforward articles,
> informative Webcasts and more! Get everything you
> need to get up to
> speed, fast.
>
http://ads.osdn.com/?ad_id=7477&alloc_id=16492&op=click
> _______________________________________________
> Bluez-users mailing list
> Bluez-users@lists.sourceforge.net
>
https://lists.sourceforge.net/lists/listinfo/bluez-users
> 


__________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 
http://mail.yahoo.com 


-------------------------------------------------------
SF.Net email is sponsored by: Discover Easy Linux Migration Strategies
from IBM. Find simple to follow Roadmaps, straightforward articles,
informative Webcasts and more! Get everything you need to get up to
speed, fast. http://ads.osdn.com/?ad_id=7477&alloc_id=16492&op=click
_______________________________________________
Bluez-users mailing list
Bluez-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/bluez-users

Re: [Bluez-users] BlueZ on ETRAX 100LX devboard 82+

[Naved Aziz]

[-- Attachment #1: Type: text/plain, Size: 3565 bytes --]

Hi,
 
Sorry for the typing mistake in my previous email.  It should read 
 
memset (readbuff, 0, 100);
 
not 
 
memset (dread, 0, 100);
 
 
Naved


Naved Aziz <no2alikebd@yahoo.com> wrote:

Hi Marco,

Thanks a lot for your help. I wrote my own program
using rfcomm, and have been able to establish
connections with phones.

I have also been able to write data to phones. 
However, I am currently having trouble reading data
sent from the phone to the board. 

The application running on the phone receives data
from me, displays it, and then echoes it back.

The program I have written is pretty much the same as
the RFCOMM's main.c's cmd_connect function, except now
it receives an argument from the user and sends that
out through a socket once it has connected with a
phone. This part works fine. 

Just after the write function call, I call read as:

chk_read = read (sk, readbuff, 2); 

with sk being the file descriptor of the socket
connected to the phone, readbuff being an array of
type unsigned char and size 100, and reading in only 2
characters. I have earlier initialized readbuff as:

memset (dread, 0, 100);

However, when I send data to the phone and it receives
this data and displays it, once it has sent the data
back to the board, the board does not receive it. 
Rather it waits for data to be received, and once
disconnected displays that chk_read has been assigned
a -1, meaning no data has been read. I have called
the read function for reading more than 2 characters
(have used readbuff's maximum size, 100), but still no
good.

Any idead what's going wrong here? Any help will be
greatly appreciated.

Thanks and sincerely,

Naved





--- Marco Trudel wrote:

> > My question is this: instead of creating a device
> > using ioctl(), do you know how to assign this
> already
> > created device to dev in the above if statement?
> 
> no. I never worked with such devices.
> 
> > The device resides in the /dev directory. This is
> a
> > problem I will face even if I write step(6)
> > separately
> 
> actually no. There's no need for a device, use a
> socket.
> 
> > becuase the question of using an already
> > created device will still come up.
> 
> what for? not for bluez...
> 
> 
> regards
> Marco
> 
> 
>
-------------------------------------------------------
> SF.Net email is sponsored by: Discover Easy Linux
> Migration Strategies
> from IBM. Find simple to follow Roadmaps,
> straightforward articles,
> informative Webcasts and more! Get everything you
> need to get up to
> speed, fast.
>
http://ads.osdn.com/?ad_id=7477&alloc_id=16492&op=click
> _______________________________________________
> Bluez-users mailing list
> Bluez-users@lists.sourceforge.net
>
https://lists.sourceforge.net/lists/listinfo/bluez-users
> 


__________________________________________________
Do You Yahoo!?
Tired of spam? Yahoo! Mail has the best spam protection around 
http://mail.yahoo.com 


-------------------------------------------------------
SF.Net email is sponsored by: Discover Easy Linux Migration Strategies
from IBM. Find simple to follow Roadmaps, straightforward articles,
informative Webcasts and more! Get everything you need to get up to
speed, fast. http://ads.osdn.com/?ad_id=7477&alloc_id=16492&op=click
_______________________________________________
Bluez-users mailing list
Bluez-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/bluez-users

__________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 
http://mail.yahoo.com 

[-- Attachment #2: Type: text/html, Size: 4418 bytes --]

Re: [Bluez-users] BlueZ on ETRAX 100LX devboard 82+

[Erwin Authried]

Am Fre, den 10.06.2005 schrieb Naved Aziz um 7:06:
> Hi,
> 
> Basically, these are the steps that I am taking to set
> up an SP connection between the Axis board and the
> Nokia 6600:
> 
> (1) hcid
> (2) sdpd
> (3) hciconfig hci0 up #set up the bluetooth dongle
> (4) hcitool scan  #spot the phone, get the BD address
> (5) sdptool browse <BD address> #see services and 
>     their corrresponding channels
> (6) rfcomm connect /dev/rfcomm0 <BD address> <channel>
>     #where, if channel 2 is the one on nokia 6600    
>     providing serial port service, I put 2 for
> channel.   
>     The /dev/rfcomm0 is already created prior to 
>     flashing the image onto the board as follows:
>     mknod -m 0666 /dev/rfcomm0 c 216 0 
> 
> At this point, the phone gives a prompt, asking for a
> pin number.  The value in /etc/bluetooth/pin is 1234,
> and I have changed the pin_helper in hcid.conf to
> refer to a script file called qpin that looks like
> this:
> 
> #!/bin/sh
> #echo "PIN:1234"
> 
> This script file that I have created to work with the
> pin_helper is stored in the /tmp directory, since this
> is the only place where I am allowed to create any
> files, etc once an image has been downloaded onto the
> board. 
> 
> After I type in the pin on the Nokia 6600, there is a
> moment of wait, and then, the phone says "unable to
> connect", and the board says "can't create socket:
> resource temporarily unavailable".
> 
> You mentioned that the rfcomm utility creates a device
> that causes problems on some systems; how to get
> around this?
> 
> Thanks in advance for your help.
> 
> Naved
> 
are you sure that your board is able to save the link key? It is
normally stored in /etc/bluetooth/link_key. If your /etc is r/o, you
must make a symlink into a writeable directory.

Regards,
Erwin




-------------------------------------------------------
This SF.Net email is sponsored by: NEC IT Guy Games.  How far can you shotput
a projector? How fast can you ride your desk chair down the office luge track?
If you want to score the big prize, get to know the little guy.  
Play to win an NEC 61" plasma display: http://www.necitguy.com/?r=20
_______________________________________________
Bluez-users mailing list
Bluez-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/bluez-users