Re: [Bluez-users] Serial connection between two Linux machines

[Marcel Holtmann <marcel@holtmann.org>]

Hi Thomas,

> I have two Linux machines. I wish to connect to one from the other
> using a terminal over Bluetooth
> 
> The problem I have is annoying because it basically works. Anyway,
> here is the problem
> 
> Master (USB bluetooth):
> 
> modprobe hci_usb
> hciconfig hci0 up
> hciconfig
> 
> mknod -m 666 /dev/rfcomm0 c 216 0
> rfcomm bind 0 00:60:57:18:FB:6E 1
> 
> Slave (UART bluetooth):
> 
> hciattach /dev/ttyS0 -s 115200 csr
> hciconfig hci0 up
> hcid
> dund --persist --listen
> sdpd
> sdptool add SP --channel=1
> 
> 
> I open a terminal on the master. A connection is present.
> 
> I type echo "Hello" > /dev/bluetooth/rfcomm/0
> 
> and on the master terminal I see "Hello"
> 
> And this is where the problem comes. If I repeat the echo, I get:
> cannot create /dev/rfcomm0: No such device
> 
> because the connection was closed
> 
> I have sent huge files down the link with no problem...but when it
> reaches the end of the file, the connection closes everytime!
> 
> If anyone knows what Im doing wrong I would appreciate it! I have
> searched for 2 days now and not managed to find the solution

use "rfconn connect ..." instead of "rfcomm bind ..." or keep the link
opened with "cat /dev/rfcomm0".

Regards

Marcel




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