Re: [Discuss-gnuradio] Runtime error - Empty Device Address in GRC Flowgraph build

[Marcus D. Leech]

On 08/15/2015 06:58 AM, Mark wrote:
> Hello,
>
> After installing GRC into Ubuntu 15.05 64bit I get the following error when 
> trying to run a GRC flow graph example:-
>
> -----------------------------------------------------------------------------------------------------------
>
> RuntimeError: LookupError: KeyError: No devices found for ----->
> Empty Device Address
>
> -----------------------------------------------------------------------------------------------------------
>
>
> A uhd_find_device command successfully returns the serial number from my USRP 
> B100 in TERMINAL. However, as I say, the flowgraph wont build as it doesn’t 
> appear to be able to locate my USRP B100 via its USB connection.
>
> "uhd_images_downloader.py" successfully runs and running uhd-usrp.rules to 
> moves rule file to /etc/udev/rules.d/ carries out ok too.
>
> However, again, I'm still unable to build a successful GRC flowgraph with my 
> B100.
>
> I leave the device address empty in the GRC UHD USRP Source block but again, 
> GRC wont build the flowgraph and returns the above error message.
>
> Please help as I've spent days trying to get GRC to install and operate 
> successfully.
>
> Many thanks in advance,
>
> Mark
>
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Have you tried just putting a device address in?

use:

type=b100

in the device address field in your flow-graph