On 2022-03-26 12:37, [email protected] wrote:
I have been fighting this problem for two months; sometimes able to
work for a couple of days, and then it breaks again. It occurs on
multiple hardware platforms.
@SDR1000:~/SDR/uhd/host/build/examples$ sudo -E ./benchmark_rate
--args
type=b200,fpga=/usr/local/share/uhd/images/usrp_b200mini_fpga.bin
--rx_rate 10e6 --tx_rate 10e6
results in:
———————-
[INFO] [UHD] linux; GNU C++ version 9.4.0; Boost_107100;
UHD_4.2.0.git-435-g220710b1
[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.
———————
the environment variable is set in ~/.bashrc as shown below
———————
@SDR1000:~/SDR/uhd/host/build/examples$ echo $UHD_IMAGES_DIR
/usr/local/share/uhd/images/
jericho@SDR1000:~/SDR/uhd/host/build/examples$ sudo -E uhd_find_devices
[INFO] [UHD] linux; GNU C++ version 9.4.0; Boost_107100;
UHD_4.2.0.git-435-g220710b1
--------------------------------------------------
-- UHD Device 0
--------------------------------------------------
Device Address:
serial: xxxxxxxxx
name: B200mini
product: B200mini
type: b200
———————
I was briefly able to have the command working benchmark_rate work
last week by adding the args, but now it is failing again. It fails
with sudo -E or plain sudo. And also fails without the args. How do I
get past this? Thanks!
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Also, there's ZERO reason to run this under "sudo". No enhanced
privilege is required to run this, unless you haven't installed the
"udev" rules for the USRP.
I'm pretty sure that the default Ubuntu installer does that, although my
recollection is that it doesn't have a rule for "mini" series in the
"uhd" rules file in
/usr/lib/udev/rules.d file.
Easy enough to add, just copy one of the other rules and use a product
id of "0022".
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