Re: [Bluez-users] rfcomm device blocking/data available behaviour

[Dave Marples <dave-lists@marples.net>]

Folks,
Replying to myself here, but moving over to the python library, the 
following code _works_;

import bluetooth

s=bluetooth.BluetoothSocket( bluetooth.RFCOMM )
s.connect(("xx:xx:xx:xx:xx:xx",1))
s.send('ATZ\r')
while 1:
    c=s.recv(1)
    print "Got",len(c),"Detail:",ord(c),c

...so, I can only conclude that it's something to do with the device 
emulation side of things.  Hope this is helpful to someone.

Regards

DAVE

Dave Marples wrote:
> Folks,
>
> I've got a problem using rfcomm to a generic BT device (actually a SE 
> K750i phone, but that's just what I'm using for an example).  It looks 
> to me like a bug in the rfcomm/socket interface, but what do I know?
>
> The problem seems to be that blocking/select on a rfcomm serial port 
> isn't working correctly. This is using Ubuntu Dapper (latest release) 
> and I've checked the bluetooth/rfcomm directory against patch 2.6.16-mh3 
> to ensure that all of the current changes are in there, and they are (in 
> fact, only core.c has changed, and that's mostly beautification).
>
> The easiest way to create the problem is as follows;
>
> 1) In /etc/bluetooth/rfcomm.conf establish a connection to the phone;
>
> rfcomm3 {
>    bind yes;
>    # Bluetooth address of the device
>    device xx:xx:xx:xx:xx:xx;
>    # RFCOMM channel for the connection
>    channel    1;
>    # Description of the connection
>    comment "K750i";
> }
>
> 2) ...then cat /dev/rfcomm3
>
> Obviously, at this point nothing happens.
> 3) _RING_ the phone
>
> The output from the 'cat' job goes crazy, and never finishes.
>
> Another way to create the problem  is the following (using python);
>
> fd=open("/dev/rfcomm3","r+")
> fd.write("ATZ\n")
> while 1:
>    c=fd.read(1)
>    print "Got",len(c),"Detail:",ord(c),c
>
> Can anyone help?  I'm stuck here....it's quite possible I'm doing 
> something _really_ silly, but I need someone to hold a mirror up to be 
> able to see that...
>
> Regards
>
> DAVE
>
>
>
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> Bluez-users@lists.sourceforge.net
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>   



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