[Discuss-gnuradio] RE: Discuss-gnuradio Digest, Vol 74, Issue 77

Cosmin

> Date: Wed, 28 Jan 2009 10:04:29 -0500
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> 1. RE: Discuss-gnuradio Digest, Vol 74, Issue 75 ([ Cosmin ])
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> Date: Wed, 28 Jan 2009 15:04:25 +0000
> From: "[ Cosmin ]" <address@hidden>
> Subject: [Discuss-gnuradio] RE: Discuss-gnuradio Digest, Vol 74, Issue
> 75
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> Hi all,I have several questions to ask you, maybe you can help:First, I'm using gnuradio on Osx Tiger with python2.5 (via Macports), and don't find any "gr_threading25.py" in my ../gr/lib/python2.5/site-packages/gnuradio/gr, but only "gr_threading23.py" and "gr_threading24.py". Is this normal?Secondly, I would like to use puredata to pilot gnuradio applications and I use the jointed file.With this file, including the "net.pd" object, "ENTRY.py", "svr.py" and "testApplication.py" I hope modulate in real time gnuradio and the usrp. Of course for using "net.pd" I have to run a puredata [1] or pd-extended [1] application. But how to incorporate the "ENTRY.py", "svr.py" and "testApplication.py" within the gnuradio python scripts?How for example in the ../example/audio, I can change the frequency value of "mono_tone.py" (actually set to 650) in real time from puredata via "net.pd" using referred python scripts?I wish these manipulations could be possible. Like that gnuradio and usrp could reach with an extraordinary (via puredata) potential of interactivity and realtime manipulation.Best,Cosmin [1] http://puredata.info/downloads> Date: Wed, 28 Jan 2009 01:42:48 -0500> From: address@hidden> Subject: Discuss-gnuradio Digest, Vol 74, Issue 75> To: address@hidden> > Send Discuss-gnuradio mailing list submissions to> address@hidden> > To subscribe or unsubscribe via the World Wide Web, visit> http://lists.gnu.org/mailman/listinfo/discuss-gnuradio> or, via email, send a message with subject or body 'help' to> address@hidden> > You can reach the person managing the list at> address@hidden> > When replying, please edit your Subject line so it is more specific> than "Re: Contents of Discuss-gnuradio digest..."> > > Today's Topics:> > 1. Re: Gmsk_demod() (Achilleas Anastasopoulos)> 2. block destructors (Brett L. Trotter)> 3. gr-trellis.html (w w)> 4. Exploring the world of GNU (Bari Bari)> 5. Exploring the world of GNU (Bari Bari)> 6. Re: Exploring the world of GNU (Eric Blossom)> 7. help: cannot send after transport endpoint shutdown (Joreen Tan)> 8. Re: help: cannot send after transport endpoint shutdown> (Eric Blossom)> 9. (no subject)> 10. Re: Write bin to SD card (Yabo Li)> > > ----------------------------------------------------------------------> > Message: 1> Date: Tue, 27 Jan 2009 14:14:08 -0500> From: Achilleas Anastasopoulos <address@hidden>> Subject: Re: [Discuss-gnuradio] Gmsk_demod()> To: gnuradio mailing list <address@hidden>> Message-ID: <address@hidden>> Content-Type: text/plain; charset=ISO-8859-1; format=flowed> > Yufeng,> > For an example on how to do that with two convolutionally encoded > transmissions look at the GRC example in:> > http://gnuradio.org/trac/browser/gnuradio/trunk/grc/examples/trellis/interference_cancellation.grc> > > Achilleas> > > > > > > -------------------------------> Hello, everyone,> > We've just got two USRPs in our lab and we want to start using them to> do some demodulation.> > I'd like to use one of them to transmit the sum of two (uncoded)> signals, useful and interference, with possible relative scaling to> simulate different channels. At the receiver side, I wanna then> implement different demodulators, like treating interference as noise> or successive demodulation (demodulate interference, cancel and> demodulate user).> > Is there any reference I could take a look on how to implement this in> USRP? Many thanks!> > > > > ------------------------------> > Message: 2> Date: Tue, 27 Jan 2009 13:21:25 -0600> From: "Brett L. Trotter" <address@hidden>> Subject: [Discuss-gnuradio] block destructors> To: address@hidden> Message-ID: <address@hidden>> Content-Type: text/plain; charset=ISO-8859-1> > I'm doing some logging of what time signal events happen and in the> destructor of a custom signal block, I'm printing a log line to a file,> followed by an fflush, but i'm not always getting my line. Is the> destructor not happening, or is something else transpiring?> > Is there a way to ensure a destructor will fire even if a user ctrl+c's> a flowgraph, especially with WXGUI/GRC, or is that not what is happening?> > > > > > ------------------------------> > Message: 3> Date: Tue, 27 Jan 2009 14:48:40 -0500> From: w w <address@hidden>> Subject: [Discuss-gnuradio] gr-trellis.html> To: address@hidden> Message-ID:> <address@hidden>> Content-Type: text/plain; charset="iso-8859-1"> > Greetings,> I was wondering if someone could provide the following file? I went to> that location however gr-trellis.html is not there. I read about this doc> in the readme file of the gr-trellis example directrory. There was> gr-trellis.xml but Internet Explorer won't display it and notepad is just> too painful. Also, any other documentation on gr-trellis would be most> helpful.> > Thanks> > > http://gnuradio.utah.edu/svn/gnuradio/trunk/gr-trellis/doc/gr-trellis.html> -------------- next part --------------> An HTML attachment was scrubbed...> URL: http://lists.gnu.org/pipermail/discuss-gnuradio/attachments/20090127/dbb3b5ff/attachment.html> > ------------------------------> > Message: 4> Date: Wed, 28 Jan 2009 15:18:48 +1300> From: Bari Bari <address@hidden>> Subject: [Discuss-gnuradio] Exploring the world of GNU> To: address@hidden> Message-ID:> <address@hidden>> Content-Type: text/plain; charset="iso-8859-1"> > Hi> I have just started work on gnu project.> Initially i got basic concept of Python and now studying gnuradio through> its website.can any body help me to give guidance about getting basic> knowledge so that I will be able to do some projects in this field. or any> body have some basic programs with description to understand.> > Take care.> -------------- next part --------------> An HTML attachment was scrubbed...> URL: http://lists.gnu.org/pipermail/discuss-gnuradio/attachments/20090128/bc0dad62/attachment.html> > ------------------------------> > Message: 5> Date: Wed, 28 Jan 2009 15:18:49 +1300> From: Bari Bari <address@hidden>> Subject: [Discuss-gnuradio] Exploring the world of GNU> To: address@hidden> Message-ID:> <address@hidden>> Content-Type: text/plain; charset="iso-8859-1"> > Hi> I have just started work on gnu project.> Initially i got basic concept of Python and now studying gnuradio through> its website.can any body help me to give guidance about getting basic> knowledge so that I will be able to do some projects in this field. or any> body have some basic programs with description to understand.> > Take care.> -------------- next part --------------> An HTML attachment was scrubbed...> URL: http://lists.gnu.org/pipermail/discuss-gnuradio/attachments/20090128/72f4d39a/attachment.html> > ------------------------------> > Message: 6> Date: Tue, 27 Jan 2009 21:40:34 -0800> From: Eric Blossom <address@hidden>> Subject: Re: [Discuss-gnuradio] Exploring the world of GNU> To: Bari Bari <address@hidden>> Cc: address@hidden> Message-ID: <address@hidden>> Content-Type: text/plain; charset=us-ascii> > On Wed, Jan 28, 2009 at 03:18:48PM +1300, Bari Bari wrote:> > Hi> > I have just started work on gnu project.> > Initially i got basic concept of Python and now studying gnuradio through> > its website.can any body help me to give guidance about getting basic> > knowledge so that I will be able to do some projects in this field. or any> > body have some basic programs with description to understand.> > > > Take care.> > Start here:> > http://gnuradio.org/trac/wiki> > Note especially the GNU Radio FAQ and the USRP FAQ:> > http://gnuradio.org/trac/wiki/FAQ> http://gnuradio.org/trac/wiki/UsrpFAQ> > Download the code and build it:> > http://gnuradio.org/trac/wiki/Download> http://gnuradio.org/trac/wiki/BuildGuide> > Look at the examples in:> > gnuradio-examples> > and some of standard utilities in:> > gr-utils> > Assuming you've got a USRP, look at usrp_fft.py, usrp_oscope.py and usrp_siggen.py> > Most commands support a --help option. Try using it.> > Also read the README files contained in the source code.> > > We've got a list of suggested reading:> > http://gnuradio.org/trac/wiki/SuggestedReading> > > If you come up with questions, try to answer them with a web search> before posting your questions here. We've answered a lot of questions> on this mailing list over the years... The archives are well indexed by> google and friends.> > Welcome!> Eric> > > > > ------------------------------> > Message: 7> Date: Wed, 28 Jan 2009 13:41:06 +0800> From: Joreen Tan <address@hidden>> Subject: [Discuss-gnuradio] help: cannot send after transport endpoint> shutdown> To: <address@hidden>> Message-ID: <address@hidden>> Content-Type: text/plain; charset="windows-1252"> > > Hi,> > I have got this error message when i'm trying to use this two commands to free up the usb resource,> > modprobe -vr ehci_hcd> modprobe -v ehci_hcd> > the error message is: > > usb_control_msg failed: error sending control message: Cannot send after transport endpoint shutdown> > Can anyone help me with this? i don't really quite understand this error message.. It was initially working fine until i tried it for the second time.. Regards,Joreen> _________________________________________________________________> More than messages–check out the rest of the Windows Live™.> http://www.microsoft.com/windows/windowslive/> -------------- next part --------------> An HTML attachment was scrubbed...> URL: http://lists.gnu.org/pipermail/discuss-gnuradio/attachments/20090128/b816e7b1/attachment.html> > ------------------------------> > Message: 8> Date: Tue, 27 Jan 2009 21:48:10 -0800> From: Eric Blossom <address@hidden>> Subject: Re: [Discuss-gnuradio] help: cannot send after transport> endpoint shutdown> To: Joreen Tan <address@hidden>> Cc: address@hidden> Message-ID: <address@hidden>> Content-Type: text/plain; charset=us-ascii> > On Wed, Jan 28, 2009 at 01:41:06PM +0800, Joreen Tan wrote:> > > > Hi,> > > > I have got this error message when i'm trying to use this two commands to free up the usb resource,> > > > modprobe -vr ehci_hcd> > modprobe -v ehci_hcd> > > > the error message is: > > > > usb_control_msg failed: error sending control message: Cannot send after transport endpoint shutdown> > > Can anyone help me with this? i don't really quite understand this> > error message.. It was initially working fine until i tried it for> > the second time.. Regards,Joreen> > > > ------------------------------> > Message: 9> Message-ID: <address@hidden>> > -r --remove> This option causes modprobe to remove, rather than insert a mod-> ule. If the modules it depends on are also unused, modprobe> will try to remove them, too. Unlike insertion, more than one> module can be specified on the command line (it does not make> sense to specify module parameters when removing modules).> > There is usually no reason to remove modules, but some buggy> modules require it. Your kernel may not support removal of mod-> ules.> > Eric> > > > > ------------------------------> > Message: 10> Date: Tue, 27 Jan 2009 22:42:43 -0800> From: Yabo Li <address@hidden>> Subject: Re: [Discuss-gnuradio] Write bin to SD card> To: Eric Blossom <address@hidden>, Yabo Li <address@hidden>,> address@hidden> Message-ID:> <address@hidden>> Content-Type: text/plain; charset="iso-8859-1"> > Hi Eric,> > Thanks very much for your reply.> > I tried to verify the bin that I programmed in the SD card using -v option.> No error message and no success message either. But if I plug in the SD card> to the USRP2, I still cannot get any LED on. Do you know what could cause> this problem? Thanks!> > Regards,> Yabo> > On Tue, Jan 27, 2009 at 2:32 AM, Eric Blossom <address@hidden> wrote:> > > On Mon, Jan 26, 2009 at 11:15:15PM -0800, Yabo Li wrote:> > > Hi,> > >> > > I tried to follow the instructions in "USRP2UserFAQ" to program the SD> > card> > > with the bin files from http://gnuradio.org/releases/usrp2-bin/trunk/.> > > (txrx.bin and u2_rev3.bin), there is no error message showing up.> > However,> > > when I plug in the SD card into USRP2, and power on, I cannot get normal> > led> > > lights as I usually get with the right SD card. Is there anyway to verify> > > that I indeed programmed the SD card, or verify that what I programmed> > > matches with the bin files? BTW, I am using a 2G SD card. Thanks!> > >> > > Regards,> > > Yabo> >> > $ u2_flash_tool --help> > Usage: u2_flash_tool: [options] filename> >> > Options:> > -h, --help show this help message and exit> > -w, --write write FILE to TARGET slot> > -v, --verify verify FILE against TARGET slot> > -r, --read read TARGET slot, write to FILE> > -t TARGET, --target=TARGET> > select TARGET slot from: fpga, s/w [default=s/w]> > --dev=DEV specify flash device file, e.g., /dev/sdb. Be> > careful!> >> -------------- next part --------------> An HTML attachment was scrubbed...> URL: http://lists.gnu.org/pipermail/discuss-gnuradio/attachments/20090127/83ad6e54/attachment.html> > ------------------------------> > _______________________________________________> Discuss-gnuradio mailing list> address@hidden> http://lists.gnu.org/mailman/listinfo/discuss-gnuradio> > > End of Discuss-gnuradio Digest, Vol 74, Issue 75> ************************************************
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From:	[ Cosmin ]
Subject:	[Discuss-gnuradio] RE: Discuss-gnuradio Digest, Vol 74, Issue 77
Date:	Wed, 28 Jan 2009 16:15:38 +0000