Re: [Discuss-gnuradio] usrp spectrum sensing

[Josh Blum]

On 02/08/2013 07:26 PM, Biniyam Zewede wrote:
> 
> 
> Hello everyone, I am trying to sense a transmitted signal using a
> usrp. I typed the following command (/usrp_spectrum_sense.py 440M
> 450M --fft 512) and worked a couple of times. But when I try it
> today, it tells me that there is no device. (even though I connected
> a usrp). part of the message I get looks like this.
> 
> RuntimeError: LookupError: KeyError: No devices found for ----->
> 
> Empty Device Address
> 
> 
> I need help please. Biniyam.
> 

need more information.


If this is a network device, you may not have setup your network interface.
http://files.ettus.com/uhd_docs/manual/html/usrp2.html#setup-networking


If this is a usb device, you may not have setup udev/installed winusb
driver.
http://files.ettus.com/uhd_docs/manual/html/transport.html#usb-transport-libusb


-josh

> 
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