This is the third time I have asked for help, each time I have tried to
be
civil, but I get responses back telling me to learn linux, not help with
GNU-Radio/USRP2. Or if they are help with GNURadio/USRP2, it is with
GRC,
which doesn’t work with whatever version of Fedora I happen to have.
My initial request for help was a couple of weeks ago and was this:
I just started using the USRP2 with GNURadio. I have made a script that
uses the gnuradio library, but it does not try and interface with the
USRP2.
How do you do this? Or alternatively is there a list of gnuradio
functions
that I can look at that has how to set this up? I have tried doing a
google
search for this, but it turns up nothing that I have found to be
helpful.
Thanks
Alex
The response was for GRC, which doesn’t work with whatever version of
Fedora
I have; however, by looking through the examples I tried to scrape
together
something, that didn’t work.
My second request for help was this:
I have tried transmitting an analog signal from one USRP2 to another,
but
when I run usrp2_fft.py on the rx computer, there is no receive signal.
The
analog signal is supposed to be two tones at 350 and 440 HZ transmitted
at
2.6GHz. Can anyone help me figure out what I am doing wrong?
This included the python script that I had written; I did not get any
responses.
My third request:
I have tried transmitting an analog signal from one USRP2 to another,
but
when I run usrp2_fft.py on the rx computer, there is no receive signal.
The
analog signal is supposed to be two tones at 350 and 440 HZ transmitted
at
2.6GHz. Can anyone help me figure out what I am doing wrong?
I have tried using GRC, but at the most up to date version does not work
with Fedora, which is the OS that I have to use, this is for a research
project with a professor at my university, and the mandate is to use
Fedora,
this does not look like it will change in the near future.
Again the response was to use GRC, which does not work with the version
of
Fedora that I have.
Fedora 11 is old and no longer updated. Upgrade your fedora.
As I mentioned in my initial request for help, I cannot change the
version
of Fedora that I have. It is mandated by a person who at the beginning
of
this semester made the decision to use this specific OS and it cannot be
changed because of a large amount of software that would have to be
reinstalled. This ordinarily would not be a problem, except for the
fact
that the software has to be installed in a specific manner depending on
the
specific version of the OS and the OS itself. I do not use that
software,
but that is the reason I was given. This again would not be a problem
since
I have a laptop that I can do whatever with, but that doesn’t solve the
problem for everyone else on the project, somewhere between 15 and 25
people. And I have Fedora 13, my inclusion of the statement about
Fedora 11
was to illustrate a point about how confusing the instructions are.
If you make a mistake installing software, its not a big deal, just
google
around, and if you need help, ask for help, polietly and someone will
help. Complaining is not gonna fix anything.
I did ask for help; however, I did not get it, I got people telling me
to
use GRC, which doesn’t work with whatever version of Fedora I happen to
have.
Assuming you actually need to Install sdcc from source, it is no
different
then installing gnuradio from source. 7 simple steps here is the link
from
my google search “sdcc install linux”
http://sdcc.sourceforge.net/doc/sdccman.html/node15.html#sub:Building-SDCC-on-Linux
And what if I don’t understand 75% of phrases in these 7 “simple” steps?
I use Linux, and almost every program i use is a single click install
from
the software center and its free. Your comparing installing binaris in
windows to installing bleeding endge source code in linux. Not a valid
comparision.
Interesting, the one time I actually need to use linux, it is not a
“single
click install.” Someone gave a bash script that installed GNU-Radio,
and
that works as long as I restrict myself to using the sample scripts that
come with GNU Radio, which again is not useful.
- As with a lot of things that seems complicated at first, some basic
knowledge helps simplify things greatly. I’d suggest checking out a
basic
linux book at your library. Perhpas some others on the list can suggest
some.
- Linux isn’t that scary, and most problems you encounter can be fixed
up
with a bit of googling.
Or perhaps you could suggest some? I also tried googling for help with
USRP2, but got back links for a program I can’t use or links that don’t
help.
- GNU Radio + USRP isn’t an easy thing. It requires knowledge of
programming, DSP, digital communications, and maybe even some basic
electronics/circuits. If you already have that knowledge, why not take a
bit
more time and get some linux knowledge under your belt. The two (at this
point) really go hand-in-hand.
I have knowledge of DSP, programming (however, I had to start learning
python), digital communications and circuits and electronics. I do not
know
linux. My objective is to learn how to use a USRP2 and I do not have
the
time to also learn linux.
Apples to oranges comparison. Linux distributions have “installers” for
100s and 100s of
of different pre-configured, ready-to-go applications, just like
Windows
does. Those installers
take care of any pre-requisites required, typically. There are
pre-packaged versions of Gnu Radio
available for Fedora, including GRC. Those pre-packaged versions are
somewhat out-of-date
with respect to the current development (actually, sometimes really
out-of-date). On Fedora,
Using the “System->Administration->Add/Remove Software” function
allows
you to select
from hundreds and hundreds of categorized software and install it over
the
net, generally
utterly seamlessly. Try going in there and typing a search term, like
“gnuradio” or
“plotting”, or “scientific” or “engineering”, or “radio”, or
“algebra”, or
“simulation”, or
“electronics”. Some of what you find there likely also has versions
for
Windows.
When I do System-Administration-Add/Remove Software and then search for
grc
I get grc-0.70-6.fc12, which I already have ( or at least am assuming by
the
checkmark next to the little open package box).
P.S. You might be able to avoid a lot of these problems if you wrote a
tutorial on how to write a python script that does this instead of an
infinite number of tutorials on how to write a python script that
transmits
350Hz and 440Hz tones over speakers and a grc diagram that transmits the
same tones over the air.
This sentence was supposed to mean that a tutorial on how to do simple
transmission with USRP2 in python (and not in GRC due to issues
installing
it across different operating systems) would be helpful. I am sorry
that
the meaning was not clear.
I have gone back through the build guide for fedora that is located on
the
GNU radio website, and it does not help with upgrading GRC. GNU radio
is
working fine, but GRC is not.
Alex
