Re: [Bluez-devel] RFCOMM communication gets stalled

[Marcel Holtmann <marcel@holtmann.org>]

Hi Carlos,

> I'm using bluez-libs-2.7 and bluez-utils-2.7 to develop a GPS system
> that communicates via bluetooth. I use the RFCOMM and the connection
> and disconnection works fine but the transmission gets stalled in
> about ten minutes. Both sides indicate that they are still connected,
> but in the GPS side, the process that writes in the rfcomm device
> (/dev/bluetooth/rfcomm/0) stops on a blocking write call:
>  
>     write(fdbluetooth,s,strlen(s));
>  
> I open the rfcomm device this way:
>  
>     fdbluetooth= open("/dev/bluetooth/rfcomm/0",O_RDWR | O_NOCTTY);
>  
>  
> That write call works fine for a while until the communication gets
> stalled.

don't use the RFCOMM TTY terminal emulation. Go directly throught the
RFCOMM socket interface. If you still got problems check with hcidump
what is going on.

Regards

Marcel




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