On 2022-01-07 04:13, mobizmn--- via USRP-users wrote:
I am trying to run the tx_timed_sample example of UHD with USRP B210.
When I run uhd_find_devices or uhd_usrp_probe, the USRP device is
detected correctly and the details are shown correctly. But when I try
to run the code by |./tx_timed_samples, |I get the following error:
|[WARNING] [B200] EnvironmentError: IOError: Could not find path for
image: usrp_b200_fw.hex|
|Using images directory: <no images directory located>|
|Set the environment variable 'UHD_IMAGES_DIR' appropriately or follow
the below instructions to download the images package.|
|Please run:|
|"/usr/lib/x86_64-linux-gnu/uhd/utils/uhd_images_downloader.py"|
But if I run the python examples, they work perfectly fine. The file
“|uhd_images_downloader.py|“ is not actually location on the address
specified in the above error.
I tried the solution here
<https://blog.actorsfit.com/a?ID=01550-735cb626-f122-4f20-941b-ad1ad9280ba6>
and ran sudo cp -r /usr/local/share/uhd/images /usr/share/uhd, but the
problem was still not resolved.
On this <https://github.com/EttusResearch/uhd/issues/43> page, they
suggested to do this:
*|export UHD_IMAGES_DIR=/usr/local/share/uhd/images|*
But that also did not work for me.
Can anybody help me with how I can locate the image directory?
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How did you install Gnu Radio? Is this on a recent version of Ubuntu?
I noticed the same thing on Ubuntu, and I just put the setting of
UHD_IMAGES_DIR in
my ~/.bashrc and it's all fine.
Remember that in Linux, environment variables propagate *downwards* in
the process tree. So if you set the variable on the command-line in one
window,
it will absolutely *NOT* affect any other process tree. Which is
why you put it in your .bashrc.
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