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From: Benny <bennyvasanth@gmail.com>
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Subject: Re: [Bluez-users] Accessing "/dev/rfcomm0" regarding
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Date: Thu, 21 Apr 2005 11:47:19 +0530

Dear Marcel,
Thanks for your continued support.

Yes it is working. We have modified our code based on attest.c.
Previously we have not chosen the "raw" mode.

Thanks & Regards,
Benny

On 4/20/05, Marcel Holtmann <marcel@holtmann.org> wrote:
> Hi Benjamin,
>=20
> > We are testing for the bidirectional data transfer between 2 PCs over B=
luetooth.
> >
> > The setup is as follows:
> >     i) Host PC(Fedora 3-Linux kernel 2.6.9) with USB Bluetooth
> > dongle(CSR Chipset). We have used the Bluez utilities(rfcomm
> > application) to connect the device and send data through the device
> > handle "/dev/rfcomm0".
> >     ii) Device PC(Linux/Windows) hyperterminal(COM1/"/dev/ttyS0"). The
> > BT-SPP  module is connected to the Device PC.
> >
> > We using the commands in the following sequence on the Host PC:
> > i) hcid
> > ii) sdpd
> > iii) sdptool add --channel=3D1 SP
> > iv) rfcomm connect 0 <BDADDR> 1
> > v) ls -l > /dev/rfcomm0 - for sending the data, working fine
> > vi) cat /dev/rfcomm0 - for reading the data, working fine.
> >
> > We have written a simple program which opens "/dev/rfcomm0" using
> > "open("/dev/rfcomm0",O_RDWR)". We are able to send data using the
> > system call "write()". But we are not able recieve data using the
> > system call "read()". But the "hcidump -x" utility is showing the
> > recieved data.
>=20
> this is working. Check the attest program from bluez-utils.
>=20
> Regards
>=20
> Marcel


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