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Re: [Discuss-gnuradio] Flow graph using RTL-SDR or OSMOSDR source doesn'


From: Sreeraj Rajendran
Subject: Re: [Discuss-gnuradio] Flow graph using RTL-SDR or OSMOSDR source doesn't execute on 3.6.4.1
Date: Sun, 5 May 2013 14:29:03 +0800 (SGT)


Hi,

Did you try example grc flowgraph provided by gr-osmosdr[1] on both of your machines?

[1]available in gr-osmosdr/apps folder (https://github.com/mjmdavis/gr-osmosdr/tree/master/apps)

---
Regards
Sreeraj Rajendran
http://home.iitb.ac.in/~rsreeraj


From: Joe D <address@hidden>
To: address@hidden
Sent: Sunday, 5 May 2013 6:49 AM
Subject: [Discuss-gnuradio] Flow graph using RTL-SDR or OSMOSDR source doesn't execute on 3.6.4.1

Hi All

I have a fresh install of ubuntu 12.04.2 LTS 64 bits with gnuradio v3.6.4.1-185-g8fda7aca.
Flow graph using RTL-SDR or OSMOSDR source doesn't execute. I get the following log

-----------------------------------------------------------------------------------
Executing: "/root/Other/GNU_Radio_Related/gnu_radio_examples/receiver/top_block.py"

linux; GNU C++ version 4.6.3; Boost_104601; UHD_003.005.002-65-g265daa58

Using Volk machine: avx_64_mmx_orc
gr-osmosdr 2d9e29ee (0.0.1git) gnuradio v3.6.4.1-185-g8fda7aca
built-in device types: file fcd rtl rtl_tcp uhd
-----------------------------------------------------------------------------------

Basically it does nothing after that, if I use the same Flow graph on another machine running ubuntu 11.04 64 bits with gnuradio 3.6.2 all is good, the log at launch is

-----------------------------------------------------------------------------------

Executing: "/root/Other/GNU_Radio_Related/gnu_radio_examples/receiver/top_block.py"

linux; GNU C++ version 4.5.2; Boost_104200; UHD_003.005.002-6-gf1108bd2

>>> gr_fir_ccc: using SSE
gr-osmosdr 871f0cc2 (0.0.1git) gnuradio 3.6.2
built-in device types: file fcd rtl rtl_tcp uhd
Using device #0 Generic RTL2832U SN: 77771111153705700
Found Elonics E4000 tuner
Exact sample rate is: 1000000.026491 Hz
Using Volk machine: avx_64_mmx_orc
>>> gr_fir_fff: using SSE

--------------------------------------------------------------------------------------

Both machine have rtl-sdr and gr-osmosdr installed
If for 3.6.4.1  I replace the source sink by a UHD USRP one or a Signal Source the Flow Graph executes properly

GNURadio has been installed manually by building the source as per the wiki, same for rtl-sdr and gr-osmosdr

(Attached the flow graph in question)

Regards
Joe



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