[Discuss-gnuradio] RE: Discuss-gnuradio Digest, Vol 74, Issue 75

Sorry I,ve forgot the included document,

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
>
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>
> 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 --------------
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> ------------------------------
>
> 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 --------------
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>
> ------------------------------
>
> 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/
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> ------------------------------
>
> 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!
> >
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> End of Discuss-gnuradio Digest, Vol 74, Issue 75
> ************************************************

From:	[ Cosmin ]
Subject:	[Discuss-gnuradio] RE: Discuss-gnuradio Digest, Vol 74, Issue 75
Date:	Wed, 28 Jan 2009 15:07:16 +0000