On Wed, 18 Jan 2023 13:03:53 +0000 "Beckmann, Niklas" <niklas.beckma...@rwth-aachen.de> wrote: > Hi everybody, > > I have somehow a general question, and even after days of trying > (and also googling), I did not found a solution for my problem. So > maybe anyone here can help me out. Im on Ubuntu 20.04 and gnuradio > 3.10, python 3.8. > > I am working with an evaluation kit antenna, which is controlled via > the python OOT block, that I wrote. In gnuradio, during the antenna > initialization process, my python block tells me, that the connection > to the eval-kit failed: > > Connecting ... > MB1 device channel connection failed! > Make sure the device cable is connected. > Make sure you run the connection script with sudo. > Make sure the MB1 has been programmed with the correct descriptor. > Device initialization failed! > > On the other hand, when I open sudo python in a terminal, give the same > commands as in the python block, the initialization process ends > sucessfully. So my guess was, that it has something to do with the > permissions of gnuradio (even tho I do not get an Errno13). Am I on > the right track? And if so, how can I give gnuradio the needed > permissions to connect with the eval-kit or let it run the scripts with > higher permissions without using sudo gnuradio? > > Since the question is pretty general, I did not provide anything of > code. If certain parts of the code or something else is needed, I can > give it.
If your "evaluation kit antenna" comprises a hardware device which has a linux driver supplied for it (or uses a generic USB interface for which the linux kernel already supplies a driver), so that it is represented by a device file in the /dev directory, this looks more like a permissions issue concerning the device file rather than with gnuradio itself. If that is the case you may need to write a udev rule for your hardware (http://www.reactivated.net/writing_udev_rules.html). Having said that, if you have a linux driver for your hardware you would have expected it to come with an appropriate udev rules file in the first place.
