Re: [Discuss-gnuradio] Debugging in gnuradio

It seems I found the solution, in spite of not knowing the reason. I just have to re-assign a new block to each block variable every time I re-connect them. It seems that connecting and disconnecting the same blocks several times was the cause for the segmentation fault. frankist wrote: > > Hi

Re: [Discuss-gnuradio] error while installing gnuradio 3.4.0 and jello(papyrus)

Thanks Andrew .. the problem got solved :) Andrew Davis-9 wrote: > > Use CMake to build, autotools are deprecated and are only used for > package building. They will be removed shortly to remove the > confusion. > > On Thu, Mar 22, 2012 at 9:28 AM, sumitstop > wrote: >> >> Hi , >> Yesterday I

[Discuss-gnuradio] Re g tunnel.py

Hi all, Can I use tunnel.py for more than 2 systems. Right now I am able to ping between two systems ( 192.168.200.1 & 192.168.200.2). But when I run the same program in the third system (192.168.200.3) it says destination host unreachable after pinging. ** USRP-1 Ubuntu 10.04 gnuradio

[Discuss-gnuradio] Update: RTL2832 re-written (better GRC block, librtl2832++) & works with OP25 digital radio!

Hi folks, Firstly, thank you to those who have tested the initial release and have been in touch with feedback - I really appreciate it. I would like to share the completely re-written RTL2832 code in gr-baz , which should now support all de

Re: [Discuss-gnuradio] Difference between usrp in gnuradio and usrp in grc_gnuradio

Hi Songsong , The lab material which you have mentioned seems to be good one. Can you share some more if they are available. It will be a good reference to start with GnuRadio for beginners. Thanks Songsong Gee wrote: > > I'm examining a GNU Radio Lab material: > Blad, Olofsson - 2011 - Soft

[Discuss-gnuradio] BPSK transmitter - time domain waveform

Hi all, I have some doubt on the time domain view of bpsk signal generated in Gnuradio and usrp. I used psk mod block in GRC (sps =2) and created bpsk (baseband )waveform with vector source producing 0,1,1 continuously. When I plotted the output of psk mod block using scope sink, I seen waveform

Re: [Discuss-gnuradio] Re g tunnel.py

On Thu, Apr 5, 2012 at 7:45 AM, sumitstop wrote: > > Hi all, > > Can I use tunnel.py for more than 2 systems. Right now I am able to ping > between two systems ( 192.168.200.1  & 192.168.200.2). But when I run the > same program in the third system (192.168.200.3) it says destination host > unreac

Re: [Discuss-gnuradio] Error in usage of digital_constellation_sptr

On Sat, Mar 31, 2012 at 1:47 PM, Srinagesh Sharma wrote: > Hi all, > > I have a block which uses digital_constellation_sptr as an input parameter > type. I read the parameter as "raw" data in the xml file. The header file > "digital_constellation.h" has been included in both the c++ and the h file

Re: [Discuss-gnuradio] Recent development activity, upcoming plans

On Mon, Apr 2, 2012 at 11:10 PM, Josh Blum wrote: > >> I hope this clears up why the PMT read/write issue is a non-starter. >> I'd rather see a bit of slowdown then segfaults :) >> > > I'm not sure what segfaults you are referring to. But the thread safety > issue is already a problem. Technically

[Discuss-gnuradio] Fwd: BPSK transmitter - time domain waveform

Hi Tom, Yes, I am seeing sinusoids with low freq BPSK envelope --> But, Not clean shift of 180deg as shown in figures of standard text books. Am i rite?? Also I didn't get good idea of sps in root-raised cosine. I learnt that taps of filter = 11*sps --> smoothing freq domain. When googling mail l

Re: [Discuss-gnuradio] BPSK transmitter - time domain waveform

I am saying this because in theory, ppl assume that sin(2*pi*fc*t + Pshi) where Pshi = 1(for 0) and -1 (for 1). Where as in Gnu Radio, we have root-raised cosine impulses and freq.xlating it is more like amplitude modulation --> so, no possibility of having waveform On Thu, Apr 5, 2012 at 7:53 PM,

Re: [Discuss-gnuradio] BPSK transmitter - time domain waveform

On Thu, Apr 5, 2012 at 8:02 PM, senthil murugan wrote: > I am saying this because in theory, ppl assume that sin(2*pi*fc*t + Pshi) > where Pshi = pi(for 0) and 0 (for 1). Where as in Gnu Radio, we have > root-raised cosine impulses and freq.xlating it is more like amplitude > modulation --> so, no

Re: [Discuss-gnuradio] Fwd: BPSK transmitter - time domain waveform

On Thu, Apr 5, 2012 at 10:23 AM, senthil murugan wrote: > Hi Tom, > > Yes, I am seeing sinusoids with low freq BPSK envelope --> But, Not clean > shift of 180deg as shown in figures of standard text books. Am i rite?? I'm not sure what you mean by no clean shift. The BPSK sends symbols at +1 and

Re: [Discuss-gnuradio] how to start

I installed it on fedora system using yum command. I am unable to find gr-utils/src/python. Regards Umer From: Rabbani,U,Umer,DUB2 R Sent: 05 April 2012 16:19 To: discuss-gnuradio@gnu.org Subject: how to start Hello all, I am new to GNU radio. I bought my new ettus usrp2 what do I install to g

Re: [Discuss-gnuradio] how to start

Don't know about the binary distributions, but the source-code install installs those under /usr/local/bin -- look in /usr/bin Using "yum" is used for a binary-only installation, which doesn't include source code, and may or may not include things like the .py files in gr-utils. http://www.

Re: [Discuss-gnuradio] Cannot import USRP

IN the latest Gnu Radio, the "classic API" usrp examples and suport libraries hve been removed, and many of them have been ported over to UHD. /usr/local/share/gnuradio/examples/uhd On Thu, 5 Apr 2012 09:24:11 -0700 (PDT), sumitstop wrote: > Isn't there any folder named usrp in /usr/local

[Discuss-gnuradio] IEEE DySPAN 2012: Call for Demonstrations

Hey all, The GNU Radio community is a strong and large one whose area fits great with DySpan, as I'm sure many of you are familiar with. I've seen so many great demonstrations of various dynamic spectrum access techniques using GNU Radio, and I am hoping that that some strong demos using GNU Radi

Re: [Discuss-gnuradio] Recent development activity, upcoming plans

On 04/05/2012 07:08 AM, Tom Rondeau wrote: > On Mon, Apr 2, 2012 at 11:10 PM, Josh Blum wrote: >> >>> I hope this clears up why the PMT read/write issue is a non-starter. >>> I'd rather see a bit of slowdown then segfaults :) >>> >> >> I'm not sure what segfaults you are referring to. But the th

Re: [Discuss-gnuradio] Re g tunnel.py

4 machines !! so was any extra setting were done or just the same commands on every machine i.e. tunnel.py --freq --bitrate 500k and then in other terminal sudo ifconfig gr0 192.168.200.x On Thu, Apr 5, 2012 at 7:03 PM, Tom Rondeau wrote: > On Thu, Apr 5, 2012 at 7:45 AM, sumitstop > wrote

Re: [Discuss-gnuradio] Strange problem when using build-gnuradio script

Is your problem solved ? I just installed using the same script in 10.04 and everything is fine . Btw you need to set your PYTHONPATH to /usr/local/lib/python2.6/dist-packages Wu Ting wrote: > > Hi all, > > > > I'm using build-gnuradio script to build gnuradio and uhd. It works well > befo

Re: [Discuss-gnuradio] Cannot import USRP

Isn't there any folder named usrp in /usr/local/share/gnuradio/examples/ . All the examples of usrp are there in that folder. Hey I just installed to check if the script is working fine and it seems everything is fine. The installation went well. Nishant1234 wrote: > > Hi all, > > 1. I hav

[Discuss-gnuradio] confusion recompiling gnuradio built with cmake

Hi, I had a problem recompiling framer_sink_1.cc code available in gnuradio-core/src/lib/general. I installed gnuradio 3.5.2 using cmake and tried making some changes to the gr_framer_sink_1.cc and .h files but could not compile it again. I have done similar recompiling in another gnuradio install

[Discuss-gnuradio] Close to tagging and releasing 3.5.3, merging next branch

At this point, the master branch of the repository is ready for tagging and releasing as 3.5.3, which is the last planned release of the 3.5.x series. It will have a maint branch, so there is a possibility of a 3.5.3.x bug fix release, but no plans for a 3.5.4 with new features. If there are mino

Re: [Discuss-gnuradio] BPSK transmitter - time domain waveform

On Thu, Apr 5, 2012 at 9:33 AM, senthil murugan wrote: > Hi all, > > I have some doubt on the time domain view of bpsk signal generated in > Gnuradio and usrp. I used psk mod block in GRC (sps =2) and created bpsk > (baseband )waveform with vector source producing 0,1,1 continuously. > > When I pl

Re: [Discuss-gnuradio] Debugging in gnuradio

On Thu, Apr 5, 2012 at 5:11 AM, frankist wrote: > > It seems I found the solution, in spite of not knowing the reason. > > I just have to re-assign a new block to each block variable every time I > re-connect them. It seems that connecting and disconnecting the same blocks > several times was the

Re: [Discuss-gnuradio] confusion recompiling gnuradio built with cmake

On 04/05/2012 01:30 PM, Anjan Rayamajhi wrote: > Hi, > > I had a problem recompiling framer_sink_1.cc code available in > gnuradio-core/src/lib/general. I installed gnuradio 3.5.2 using cmake and > tried making some changes to the gr_framer_sink_1.cc and .h files but could > not compile it again

[Discuss-gnuradio] how to start

Hello all, I am new to GNU radio. I bought my new ettus usrp2 what do I install to get it going? Umer ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio

Re: [Discuss-gnuradio] make test failures on master branch

On 04/05/2012 04:04 PM, Justin Ford wrote: > When I run "make test" I get the following failures: > > The following tests FAILED: > 5 - gr-core-test-all (Failed) > 23 - qa_hier_block2 (Failed) > 70 - qa_vector_sink_source (Failed) > The unit tests arent always so te

Re: [Discuss-gnuradio] GMSK modulator for higher modulation index

On Wed, Apr 4, 2012 at 1:42 PM, wayne roberts wrote: > To support GFSK modulations, a higher modulation index needs to be used. > > MSK is defined as a fixed modulation index of 0.25. > However, GFSK is used in many simple ISM (unlicensed) systems, where the > modulation index can vary from 0.5 to