[Discuss-gnuradio] Problem with multiple flow graphs on receive side

[Sriram Krishnan]

Hi,
I am trying to write an application which senses spectrum 
(usrp_spectrum_sense.py) and transmits/receives signals. I have the 
tx/rx working fine. But when i add another flow graph(3rd one to 
existing tx and rx) for the spectrum sense,to the top block, it gives me 
an error. I get an error on this line which says "cant open rx 
interface" and "device busy"

self._u = usrp.source_c (self._which,
                               fusb_block_size=self._fusb_block_size,
                               fusb_nblocks=self._fusb_nblocks)

Is it because of competing receive paths. I thought that we could have 
multiple paths.
Could somebody help in this regard.

Sriram

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