[Discuss-gnuradio] Time controlling block

2013-12-02 Thread Sandhya G
Hi, Today i got a idea about implementing three different modulations on single message signal. But i want the modulations to happen after certain time has searched (can say exactly like counter). which is the block in GNU Radio that i can use has a counter. Thanks and regards, Sandhya __

[Discuss-gnuradio] gr-ieee802-11: connecting two usrp devices

2013-12-02 Thread Nasi
Dear All, I need your help. May be someone did it before: I use 'IEEE 802.11 a/g/p OFDM Transceiver' project, Ubuntu 13.04, GNURADIO 3.7. I start the transmission using the first laptop and USRP N200 device by running the ./ofdm_tx.py. It is transmitting; Meanwhile I use the second laptop an

[Discuss-gnuradio] LTE framework receiver gr-lte

2013-12-02 Thread Baier
Hi, I tried to compile gr-lte package from github (version 3.7 not master), but it doesnt't work. GRUEL and GNURADIO_CORE have been still there. I removed GRUEL and replaced GNURADI_CORE with GNURADIO_RUNTIME,but it is still not working. Has somebody experience with this package? Thanks! A. Ba

Re: [Discuss-gnuradio] LTE framework receiver gr-lte

2013-12-02 Thread Ralph A. Schmid, dk5ras
Hi. > Hi, > > I tried to compile gr-lte package from github (version 3.7 not master), but it I guess this package needs gr 3.6... > doesnt't work. GRUEL and GNURADIO_CORE have been still there. > A. Baier Ralph. ___ Discuss-gnuradio mailing list

Re: [Discuss-gnuradio] Performance of 3.7

2013-12-02 Thread Dirk Van Bruggen
Thanks Steve. I ran volk_profile and the performance seemed to improve a bit. That is, CPU usage increased to 700% using many more cores of the processor. However, I still see buffers filling up and taking longer than realtime to process. In 3.6 the benchmark_rx program could keep up at 5MHz an

Re: [Discuss-gnuradio] LTE framework receiver gr-lte

2013-12-02 Thread Johannes Demel
Hi, on branch gr37 there are 2 directories with code. The 'code' directory contains GR 3.6 blocks for reference and gr37-lte contains the new 3.7 API blocks. 3.6 API blocks will eventually be removed as soon as it seems fit. Happy hacking Johannes On Mon, Dec 2, 2013 at 5:18 AM, Ralph A. Schmid

Re: [Discuss-gnuradio] Status of GNU Radio with OSX 10.9

2013-12-02 Thread Arturo Rinaldi
Nella citazione in data Wed Nov 20 00:50:52 2013, Michael Dickens ha scritto: Earlier today I pushed r113561 to MacPorts < https://trac.macports.org/changeset/113561 > which should allow pretty much any compiler should work on 10.8 or 10.9 (and, likely, any other OSX version) to build any vers

Re: [Discuss-gnuradio] Status of GNU Radio with OSX 10.9

2013-12-02 Thread Michael Dickens
Hi Arturo - GNU Radio 3.6.5.1 should now work within MacPorts; I've tested on 10.8 and 10.9, but the fixes should be backward compatible to at least 10.6, maybe 10.5. All of the GNU Radio ports should work right now within MacPorts. If you want to build these from source outside MacPorts, I'd

Re: [Discuss-gnuradio] Time controlling block

2013-12-02 Thread Wayne Roberts
you could keep a class variable which is added to every time work() is called, adding to it each time the value of noutput_items or input_items.size(). Its also useful to know the scheduler, because it feeds work() an arbitrary number of samples each time. There is a presentation on gnuradio sched

Re: [Discuss-gnuradio] Status of GNU Radio with OSX 10.9

2013-12-02 Thread Arturo Rinaldi
Nella citazione in data Mon Dec 2 19:42:56 2013, Michael Dickens ha scritto: Hi Arturo - GNU Radio 3.6.5.1 should now work within MacPorts; I've tested on 10.8 and 10.9, but the fixes should be backward compatible to at least 10.6, maybe 10.5. All of the GNU Radio ports should work right now

Re: [Discuss-gnuradio] Status of GNU Radio with OSX 10.9

2013-12-02 Thread Michael Dickens
I think you should be able to have GNU Radio installed into /opt/local but then you create an OOT module which installs into /usr/local . I used to do this "way back in the day"; I would assume it still works. Maybe you can send me off-list more info on what you're trying to do and I can point

Re: [Discuss-gnuradio] Status of GNU Radio with OSX 10.9

2013-12-02 Thread Arturo Rinaldi
Nella citazione in data Mon Dec 2 20:03:22 2013, Michael Dickens ha scritto: I think you should be able to have GNU Radio installed into /opt/local but then you create an OOT module which installs into /usr/local . I used to do this "way back in the day"; I would assume it still works. Maybe

Re: [Discuss-gnuradio] Status of GNU Radio with OSX 10.9

2013-12-02 Thread Michael Dickens
Hi Arturo - You don't need all 8 diff files. If you read through the Portfile for GNU Radio, you'll find that you need just 5 of those patches to build 3.6.5.1 on 10.9; if you want to build on 10.8, you need just 3. Needed for 10.8 and 10.9 (and, likely, 10.7 or earlier): patch-path-order.diff

Re: [Discuss-gnuradio] Volk machine

2013-12-02 Thread Paul B. Huter
I finally got around to trying writing to RAM, and the result is worse - my replay FFT is static. I am trying to record a chunk of spectrum (in this case the shortwave chunk, 0-30MHz) and then go back and look at small pieces to find my specific data. If someone can provide insight into how to do

[Discuss-gnuradio] Go-back is possible?

2013-12-02 Thread Raydel Abreu (CM2ESP)
Hello, Is it possible to go back and convert a Python GNU Radio code back into the GRC Flow Graph from which it was generated? Cheers, Raydel, CM2ESP ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/disc

Re: [Discuss-gnuradio] Go-back is possible?

2013-12-02 Thread Marcus Leech
There's no automatic mechanism for doing that.   on Dec 02, 2013, Raydel Abreu (CM2ESP) wrote: Hello,Is it possible to go back and convert a Python GNU Radio code back into the GRC Flow Graph from which it was generated? Cheers, Raydel, CM2ESP ___Disc

Re: [Discuss-gnuradio] Volk machine

2013-12-02 Thread Nick Foster
Paul, 30MHz is a big chunk of data to be streaming to anything. A 4GB ramdisk will be full in 30 seconds at this rate. Do you really not know *a priori* where in the whole 0-30MHz spectrum your signal will be? I notice now in your first post that you're streaming 25Msps with a low-pass filter to

Re: [Discuss-gnuradio] Go-back is possible?

2013-12-02 Thread Raydel Abreu (CM2ESP)
Oh, that's bad, I guess I should use instead the old code-reading method Raydel 2013/12/2 Marcus Leech > There's no automatic mechanism for doing that. > > > on Dec 02, 2013, *Raydel Abreu (CM2ESP)* wrote: > > Hello, > > Is it possible to go back and convert a Python GNU Radio code back

Re: [Discuss-gnuradio] Go-back is possible?

2013-12-02 Thread Marcus Leech
Think of the Python that gets emitted by GRC as object code.  What you're asking is to convert said object code back into reasonable source code. Such things exist for *actual* machine object-code, but, they produce damned-ugly results.   on Dec 02, 2013, Raydel Abreu (CM2ESP) wrote: Oh, that's

Re: [Discuss-gnuradio] Volk machine

2013-12-02 Thread Paul B. Huter
Nick: I tried downsampling the 25MHz to 10, but still was not recording the whole time I ran (about 10 seconds, with only a couple seconds of playback). That was when I tried using a RAM disk, albeit at 50 downsampled to 30. I am using the following for my disk: mount -o size=1G -t tmpfs none /mn

Re: [Discuss-gnuradio] Volk machine

2013-12-02 Thread Nick Foster
What was the size of the recorded file on the RAM disk? Are you seeing "O" indications (for overflow)? --n On Mon, Dec 2, 2013 at 1:59 PM, Paul B. Huter wrote: > Nick: > > I tried downsampling the 25MHz to 10, but still was not recording the > whole time I ran (about 10 seconds, with only a cou

Re: [Discuss-gnuradio] Go-back is possible?

2013-12-02 Thread Dan CaJacob
I have an interesting (to me anyway) idea: What if we added a default option to the GRC-XML-to-python converter to add the contents of the original GRC file as a big, delineated comment blob. Then, a simple tool could pull the GRC back out of the python file anytime and you could go back and fort

Re: [Discuss-gnuradio] Go-back is possible?

2013-12-02 Thread Tim
gzip -> base64 encode the grc file into some comments in the python file perhaps? a smallish grc file appears to be on the order of 1000 chars with such an encoding On 12/02/2013 05:11 PM, Dan CaJacob wrote: > I have an interesting (to me anyway) idea: > > What if we added a default option to the

Re: [Discuss-gnuradio] Volk machine

2013-12-02 Thread Paul B. Huter
The recorded file was only about 80MB for 10 seconds of recording, and FFT playback was static. Without using the low pass filter, I was seeing a bunch of 'D' (I think) markers, and my playback was choppy. Nick Foster wrote: What was the size of the recorded file on the RAM disk? Are you seeing

Re: [Discuss-gnuradio] Status of GNU Radio with OSX 10.9

2013-12-02 Thread Arturo Rinaldi
Il 02/12/13 22:15, Michael Dickens ha scritto: Hi Arturo - You don't need all 8 diff files. If you read through the Portfile for GNU Radio, you'll find that you need just 5 of those patches to build 3.6.5.1 on 10.9; if you want to build on 10.8, you need just 3. Needed for 10.8 and 10.9 (and,

Re: [Discuss-gnuradio] Status of GNU Radio with OSX 10.9

2013-12-02 Thread Michael Dickens
Hi Arturo - Yes, I think you've nailed it. - MLD On Dec 2, 2013, at 8:33 PM, Arturo Rinaldi wrote: > ok let's sum up and see if i have understood what is coded in the Portfile. > Let's examine it case by case : > > 10.7 > > LEGACY (3.6.5.1 and lower) and > > cat of : > > patch-path-order.di

Re: [Discuss-gnuradio] Status of GNU Radio with OSX 10.9

2013-12-02 Thread Arturo Rinaldi
Nella citazione in data Tue Dec 3 02:44:13 2013, Michael Dickens ha scritto: Hi Arturo - Yes, I think you've nailed it. - MLD On Dec 2, 2013, at 8:33 PM, Arturo Rinaldi wrote: ok let's sum up and see if i have understood what is coded in the Portfile. Let's examine it case by case : 10.7 L

Re: [Discuss-gnuradio] Time controlling block

2013-12-02 Thread Marcus Müller
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 This is redundant. The block base class has methods nitems_read() and nitems_written() that do exactly what you want. However: I'm totally interested in this presentation on the current scheduler; URL? Greetings, Marcus On 02.12.2013 19:45, Wayne Ro

Re: [Discuss-gnuradio] Go-back is possible?

2013-12-02 Thread Marcus Müller
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Frankly, if you *really* want to inline the GRC file in the generated python, I'd just have one large multiline Python string holding that file as-is. With a little magic you could even let the python program re-synthesize itself given a certain comman