On 13/03/2024 16:13, Woods, Alex C wrote:
Hello,
I've constructed the Spectrum Analyzer as seen on this page (see
following link to GNU radio wiki) in hopes to test the functionality
of GNU radio's compatibility with the b200-mini I plan to use for a
project:
https://wiki.gnuradio.org/index.php?title=Guided_Tutorial_Hardware_Considerations
Unfortunately, when I run execute the flow graph, I get:
RuntimeError: LookupError: KeyError: No devices found for -----> Empty
Device Address
and it doesn't run as intended. I've verified the connection of the
device through UHD command uhd_find_devices (as well as several other
commands), where it sees the b200-mini just fine, but GNU Radio isn't
seeing it for some reason. The device is interfaced via USB.
This is similar to the error this StackExchange user encountered (see
link below), but I was slightly confused on how to fix it with the
advice provided in the highest-upvoted response.
https://stackoverflow.com/questions/33304828/when-trying-to-use-my-usrp-in-gnu-radio-i-get-a-no-devices-found-for
If it has any effect on anything, I downloaded GNU Radio using the
three lines at the top of the UbuntuInstall page on the wiki (linked
below):
https://wiki.gnuradio.org/index.php/UbuntuInstall#:~:text=There%27s%20generally%20no%20need%20to%20build%20GNU%20Radio,for%20anyone%20who%20is%20new%20to%20GNU%20Radio.
I am new to GNU Radio as well as the operation of the b200-mini and
SDRs in general. Help would be greatly appreciated!
Thanks,
Alex
Try:
"type=b200" in the device address field in your Gnu Radio UHD USRP source.