Re: [Discuss-gnuradio] connect USRP-2921 to gnuradio

[Marcus Müller]

Hi Mohamed,

You're really not annoying; it's really nice to have you here!
I'm taking the usrp-users list into CC: here, and would like you to sign up [1]for that and follow up there; this discussion doesn't have much to do with GNU Radio, yet :)

I generally do not recommend using virtualization for high rate, real time signal processing like you want to do, unless you know very well how to set up your virtualizer in a manner that supports low-latency, high-rate network communication.
Generally, this is with almost 99% probability a network problem, made more complicated by the fact that you're in a VM.
What you really should not do is use NAT to connect your VM to your host computer's network card; make sure you use a bridged network configuration instead.

Best regards,
Marcus

[1] http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com

On 18.11.2015 18:22, mohamid92 wrote:

Hello again and sorry for annoying

I did all the step mentioned and installed gnuradio

But again am still not able to connect to USRP 2921

I AM using VMware , I detect the USRP in Windows but when I uhd_usrp_probe args=”addr=192.168.10.2” still cant detect it .

: LookupError: KeyError: No devices found for -----> 
Device Address: 
    addr: 192.168.10.2 

 

I can ping the host and USRP ip but cant detect the UHD ?

From: Marcus Müller-3 [via GnuRadio] [mailto:[hidden email]]
Sent: Tuesday, November 17, 2015 1:36 PM
To: mohamid92 <[hidden email]>
Subject: Re: connect USRP-2921 to gnuradio

 

Hi Mohamed,

UHD 3.5.5, which you seem to be using, is so very old that it lacks
crucial features. You should definitely update your UHD version.
I assume you're using Ubuntu 14.04 (they are the only ones who still
ship this old UHD), so please

sudo apt-get remove uhd-host libuhd003 gnuradio

and use pybombs to build UHD in its current version, a GNU Radio that
uses that version and everything you need, from source:

http://pybombs.info

Then, try to ping your USRP:

ping <ip-address of your USRP>

If that doesn't work, you still have a network problem. Please refer to
[1] :)

Best regards,
Marcus

[1] http://files.ettus.com/manual/page_usrp2.html#usrp2_commprob

On 17.11.2015 09:13, mohamid92 wrote:

> hello
>
> i tried to implement FM reciever from this video :
> https://www.youtube.com/watch?v=KWeY2yqwVA0
>
> but the problem is that everytime i need to run the grc an error show which
> is:
>
> ----------------------------------------------
>
> linux; GNU C++ version 4.8.2; Boost_105400; UHD_003.005.005-0-unknown
>
> Using Volk machine: avx_64_mmx_orc
> Traceback (most recent call last):
>   File "/home/mohamed/GNURADIO exercise/top_block.py", line 157, in <module>
>     tb = top_block()
>   File "/home/mohamed/GNURADIO exercise/top_block.py", line 92, in __init__
>     channels=range(1),
>   File "/usr/lib/python2.7/dist-packages/gnuradio/uhd/__init__.py", line
> 122, in constructor_interceptor
>     return old_constructor(*args)
>   File "/usr/lib/python2.7/dist-packages/gnuradio/uhd/uhd_swig.py", line
> 1737, in make
>     return _uhd_swig.usrp_source_make(*args)
> RuntimeError: LookupError: KeyError: No devices found for ----->
> Empty Device Address
>
> -----------------------------------------------
>
>
>
> --
> View this message in context: http://gnuradio.4.n7.nabble.com/connect-USRP-2921-to-gnuradio-tp56967.html
> Sent from the GnuRadio mailing list archive at Nabble.com.
>
> _______________________________________________
> Discuss-gnuradio mailing list
> [hidden email]
> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio

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