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Re: [Discuss-gnuradio] Error when trying to run two python programs simu
Re: [Discuss-gnuradio] Error when trying to run two python programs simultaneously
Tue, 23 Mar 2010 08:39:53 -0700
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On 03/23/2010 07:46 AM, drcabrejos wrote:
I have 2 (two) USRP1 and 2 (two) RFX2400 connected to each USRP1.
What I want to do is to have communication between the devices and scan for
the spectrum simultaneously.
If running programs one by one, all works great.
Running both at the same time, gives me an error saying that the USB port is
already being used.
Running: uses RFX2400 on port A
/usr/share/gnuradio/examples/digital/tunnel.py --freq 2.422G
Trying to start: uses RFX2400 on port B
/usr/share/gnuradio/examples/usrp/usrp_spectrum_sense.py -R B 2.4095G
When you have multiple usrps, you need to differentiate them by using
the "which" parameter:
tunnel.py has this option on the command line:
-w WHICH, --which=WHICH
select USRP board [default=0]
try ./tunnel.py <your args here> -w1
spectrum_sense.py does not have this option, so it will have to be the 0
by default or you will have to modify the script to pass which=<x> into
the usrp contructor.