Resource busy about tunnel.py

GNU Radio
1

Hi all,

We are trying to run the usrp_spectrum_sensing.py program inside the
tunnel.py program by using os.system() command, the error is “Device or
Resource busy”.

We have searched the gnuradio mailing list already and find a thread
about
resource busy
http://lists.gnu.org/archive/html/discuss-gnuradio/2009-04/msg00400.html

According to this thread, we can run the usrp_spectrum.py program inside
the
benchmark_rx.py by adding tb=None after tb.stop() command.

Our question is what command we need to add in the tunnel.py after the
tb.stop() command, which means we can stop the tunnel.py and start to
execute the

usrp_spectrum_sensing.py inside the tunnel.py program.

Any suggestions and guidelines are good to us, thank you.

Joey