Matt Ettus wrote:
I realized about an hour before a demo last night that we didn't have narrowband
FM (like ham and public safety), so I coded it up. Its in the
gnuradio-examples package, and it is commented rather liberally.
As an attendee at the demo last night, this was a pretty slick way of
s
Marcus D. Leech wrote:
I'm jealous that I wasn't there (wherever *there* was :-) ).
This was a USRP demonstration at the West Valley Amateur Radio
Association in San Jose, CA. Excellent job by Matt...I think you will
get a few orders, too.
-Johnathan, AE6HO
_
Seth David Schoen wrote:
Someone proposed this a while ago, but Fabrice Bellard (who is also
responsible for cool stuff like the tcc compiler, which lets you use
C as a scripting language and lets the Linux kernel compile itself
at boot time) has used a VGA card's DAC as an RF modulator to produ
Eric Blossom wrote:
>>Tried chmoding all subdirectories and files under
>>/proc/bus/usb. Still doesn't work.
>
> No clue. Is there anything interesting in the kernel logs?
I'm not familiar with Red Hat. On Debian Linux, /proc/usb permissions
are options to the usbfs filesystem mount, which ca
modes. The syslinux.cfg controls the
boot options when booting in legacy BIOS mode, and the grub.cfg controls
the boot options in UEFI boot mode.
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.
t;
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gt; tb.stop()
>
> --collect results and push to file--
>
> tb = None
>
> I could really use some debug help
>
> Rich
>
>
> _______
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flowgraph over and over again. For that, tb.run() should
suffice. If the flowgraph is not guaranteed to exit on its own, then
you'll need to do tb.start(), block while you figure out whether conditions
are proper for terminating the flowgraph, then do tb.stop() and tb.wait().
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ions for
including non-FSF owned code inside GNU Radio, as long a the licenses are
compatible. We try to avoid this as much as possible and have actually
been removing such code a little at a time as it becomes possible.
In this case, I don't think we'd want to include it, but I want
Sebastian has fixed it and it will get pushed out to our
maint and master branches shortly.
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https:/
le LTS distribution,
nor Debian stable, so it will end up being a source compile for a lot of
users now. Sylvain had mentioned in IRC he might make this a conditional
dependency.
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13:42:35 -0800
> Johnathan Corgan wrote:
>
> > On Wed, Nov 11, 2015 at 6:07 AM, Frederick E. Stevens <
> sk8tesgr...@gmail.com
> > > wrote:
> >
> >
> > > As I recall, this behavior has cropped up in 3.6 and 3.7 of gnuradio
> for
> > > me but
.
Thank you,
-Johnathan
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ure. If it is, I’d like to be able to use
> gr-lte to decode it.
>
>
>
>
>
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On Sat, Dec 5, 2015 at 5:19 PM, Henry Barton wrote:
> I previously asked about a mystery signal I had encountered and was told
> it was either CDMA2000 or IS-95. Can GNURadio decode either these?
>
GNU Radio is a toolkit for writing software radio applications. You
could use it to demodulate
<http://pgp.mit.edu/pks/lookup?op=vindex&fingerprint=on&search=0x2987C77CBB8ED9B2>
sig sig 671DA2F7
<http://pgp.mit.edu/pks/lookup?op=get&fingerprint=on&search=0x473077BC671DA2F7>
2015-08-28 __ __ Johnathan Corgan
<http://pgp.mit.edu/pks/lookup?op=vi
uring the use of the live image.
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UNetbootin first. This will allow the live system to
be ext4 based and have larger persistence options than 4GB. Unfortunately,
there will still need to be a FAT32 boot partition to allow for UEFI boot
on modern systems.
It's fairly complicated though and we won't be picking this up ag
iven a power delay profile and other
relevant parameters.
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orts for the parts I need. - MLD
>
This makes me wonder how many of these should be installed as part of GNU
Radio, then used by OOT CMake.
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On Tue, Dec 29, 2015 at 5:08 PM, Philip Balister
wrote:
> On 12/29/2015 07:47 PM, Johnathan Corgan wrote:
> > On Tue, Dec 29, 2015 at 4:42 PM, Michael Dickens <
> michael.dick...@ettus.com>
> > wrote:
> >
> >
> >> No way to force things here, I
On Wed, Dec 30, 2015 at 3:14 PM, James Humphries
wrote:
> I'm on Marcus' side with that output power, that's a scary high output. I
> start to sweat at 10W... :)
>
Heh, I connected a USRP to a 20KW PA once. Sweating was only one of
several things done in anticipa
I wanted to address some of the recent commentary on the GNU Radio Live SDR
Environment in one location.
*Persistence*
This is something supported by the Ubuntu live system when converting our
supplied ISO image to a bootable USB drive, typically with a program like
Unetbootin. (A direct copy of
Consider Carson's rule for the occupied bandwidth of an FM modulated
signal, which can be summarized as: 98% of the signal energy of an FM
signal is contained in twice the maximum deviation plus twice the highest
modulating frequency. This is an approximation.
In the case of commercial broadcast
On Tue, Mar 1, 2016 at 11:42 AM, Jose Ruvalcaba wrote:
> I was wondering if anyone has seen this issue I am encountering when
> trying to run polar_code_example.grc. Whenever I open the file my POLAR
> code configurator block shows:
>
> Value "polar.load_frozen_bits_info(True, "polar.CHANNEL_TYP
On Tue, Mar 8, 2016 at 10:06 AM, Daniel Pocock wrote:
> Debian and GNU Radio are both confirmed in GSoC this year, is there
> interest in advertising this idea[1] for converting the GNU Radio live
> DVD into a Debian Live project, merging with the Debian Ham CD?
>
The GNU Radio Live SDR enviro
Most of you already know me, as I’ve been in the GNU Radio community for
eleven years in various roles, including release manager, integration
manager, Live SDR developer, infrastructure manager, engineering
consultant, and technical trainer. Today I’m happy to move on to the role
of Chief Archite
On Fri, Apr 8, 2016 at 6:12 AM, Ben Hilburn wrote:
> It seems like Docker could make it much easier for us to support a variety
> of operating systems - although the user would still need to install
> Docker, itself. Presumably that's easier than earlier containerized models,
> though (e.g., VMs
On Fri, Apr 8, 2016 at 8:09 AM, Stefan Wunsch wrote:
> Regarding running the GUI: In the readme I've included the commands for
> X forwarding (that's your approach). Works fine on my machine! The VNC
> approach targets especially windows users.
>
I've had success running GRC and QT-based GNU Ra
On Tue, Apr 12, 2016 at 12:13 PM, Marcus Müller
wrote:
> GR compile time is an interesting issue.
>
I can't recommend enough using the ccache utility if you are going to be
compiling GNU Radio more than once.
-Johnathan
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On Tue, Apr 12, 2016 at 3:27 PM, Martin Braun
wrote:
> It's my experience that ccache errs on the right side, i.e. it rather
> recompiles if unsure. I've never had any caching issues with ccache.
> Note that the cache quickly fills up, if I can spare the space I will up
> the cache size from the
invite you can have
automatically generated by visiting:
http://slack.gnuradio.org
We look forward to seeing you there!
Ben Hilburn, Project Lead
Johnathan Corgan, Chief Architect
The GNU Radio Project - The Free & Open Software Radio Ecosy
On Thu, May 12, 2016 at 9:18 AM, Marcus Müller
wrote:
> Yeah, like the head block, it's a copying operation. But that's
> "relatively cheap".
> I'm not quite sure about the state of this, but at GRCON '14 work was
> started on letting blocks define where their buffers are – maybe, one day,
> as
On Thu, May 12, 2016 at 2:53 PM, Marcus Müller
wrote:
> Hi Johnathan,
>
> blocks can't side effect each other except through really strictly
> controlled, well-defined ways
>
> ... and that was still very clear and dominant to the user under GR 3.4, I
> agree – then we "softened" that concept by
On Sat, May 28, 2016 at 3:35 PM, Louis Brown wrote:
> Does anyone have an example CMakeLists.txt to build something very simple
> like dial_tone.cc? I DON'T want to do this in the GR source tree, rather
> just have simple ~/dial_tone containing the single *.cc and
> CmakeLists.txt. I have lear
On Thu, Jul 28, 2016 at 12:20 PM, Michael Dickens wrote:
> OK. I think the issue is that's not how ZMQ is designed to work with
> respect to REQ/REP. I think it's designed to do "sink -> REQ -> ZMQ ->
> REP -> source", so that the REQ is a sink & REP is a source. In a quick
> internet search, t
You are doing the right things. However, there is a long standing bug in
our gr_modtool created template that doesn't trigger recompiling the SWIG
wrapper when changing the public .h file(s). Just do a 'make clean',
'make', and 'sudo make install' again.
-John
You should be using Thrift 0.9.3 release, and configure thrift to be single
threaded (how escapes me at the moment.)
Johnathan Corgan
Corgan Labs - SDR Training and Development Services
http://corganlabs.com
On Wed, Aug 24, 2016 at 1:51 PM, Harper, Andrew <
andrew.har...@gtri.gatech.edu>
On Thu, Aug 25, 2016 at 8:55 AM, Philip Hahn wrote:
> Is there an offline version of the wiki (specifically, the tutorials
> section) available to download? I will be spending a week without internet
> access but would like to work on building an OOT module.
>
The LiveSDR image has the tutori
On Wed, Aug 31, 2016 at 10:05 AM, Marcus Müller
wrote:
> Whether the configure line is correct: yes, the options I'd expect are
> there. However, typically, thrift is a nightmare to configure, and
> analyzing the ./configure output most of the time lead me to disable
> further things (demos/tuto
On Mon, Oct 24, 2016 at 9:40 AM, Paul Zander wrote:
> 2. I first tried the GNURadio v3.7.10.1 as a live .iso. PLL not locked
>
We compile/install the latest master branch RTLSDR driver from git://
git.osmocom.org/rtl-sdr, which is commit e3c03f73 from June/2015. If there
is a better option
On Sun, Oct 23, 2016 at 12:37 AM, Peter Horvath wrote:
> You need to amend e.g., gr-dtv/swig/CMakeLists.txt so that
> set(GR_SWIG_LIBRARIES gnuradio-dtv)
> becomes
> set(GR_SWIG_LIBRARIES gnuradio-dtv ${GSL_LDFLAGS})
>
> and in gr-dtv/CMakeLists.txt, the GR_REGISTER_COMPONENT section should
> pr
ustomized, on-site courses for teams. For more
information or to register for a course, please visit the *Corgan Labs
Training Services Page* <http://corganlabs.com/training/>.
Best Regards,
Johnathan Corgan
+1 408 463 6614
*johnat...@corganlabs.com*
On Wed, Nov 9, 2016 at 3:39 PM, Tom Early wrote:
> The tool-tip on this branch says the modules should have a module name in
> their GRC Block Descriptions or their Block Tree. I have been unsuccessful
> in figuring out how fix this. Can someone point me in the correct direction?
>
Just add [NA
On Wed, Nov 9, 2016 at 8:36 PM, Tom Early wrote:
> I guess it would be helpful if the on-line documentation were updated (at
> least in the OOT tutorial) with:
>
Good suggestion; I've added this as an issue in our tracker:
https://github.com/gnuradio/gnuradio/issues/1087
-Johnathan
On Thu, Nov 10, 2016 at 8:07 AM, Bastian Bloessl
wrote:
> I don't know a good solution, but when I had a similar problem, I ended up
> with:
>
> - the file parser creates an initial message
> - the sync block sends a message back to the file parser when it converted
> the message into stream dom
have the option to not bother
with compiling any of the SWIG/Python wrapper code.
However, if you're using a stock apt-get installed version of GNU Radio, it
should be pulling in the appropriate swig packages, so the error above is
unusual.
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Corgan Labs - SDR Training and D
lock.
>
It would be useful to report this as an issue on our Github tracker.
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> easy to demonstrate by hooking up a usrp_source to tag_debug. usrp_source
> inserts tags but they are not seen by the tag_debug (after the first time).
>
It's really helpful that you provide a script that helps us replicate the
problem. Can you report this on our Github issue t
tagged stream of constant
> length that comes before it?
>
If the upstream tagged stream assumes a fixed number of allocated
carriers, then you'd need to change that so the tagged stream length tracks
the changing number of allocated tones.
This is sort of a lot to tackle all at once; I&
This is a quick announcement that the window has closed for non-bug fix
pull requests and the code base is frozen for the testing period prior to
release.
We expect to tag and complete a final 3.7.10.2 maintenance release and a
new 3.7.11 feature release during the week of January 23rd.
This has
d in making some critical
contributions, this is a great opportunity to get involved.
If you have any questions and would like to jump in, let us know!
Johnathan Corgan, Chief Architect
Ben Hilburn, Project Lead
Martin Braun, Community Manager
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/Changelog_Version_3.7.11
Release notes for 3.7.10.2 are available here:
https://wiki.gnuradio.org/index.php/Changelog_Version_3.7.10.2
Information about the Live SDR environment is here:
https://wiki.gnuradio.org/index.php/GNU_Radio_Live_SDR_Environment
Johnathan Corgan, Chief Architect
Ben Hilburn
o take advantage of their thread-safe
nature and think about how to use them to update the operations of their
blocks vs. calling public functions.
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<>
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Description:
tioned, it would likely have to
be applied to the next branch, which would get turned in the 3.8.x.
However, the benefits seem worth the effort.
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:
Andy Walls
Bastian Bloessl
Doug Geiger
Johnathan Corgan
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Changelog:
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t until our *oldest* supported OS’s all
have C++11 support, not just the current ones.
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fic CPU.
Can you give us the information from running:
$ grep 'model name' /proc/cpuinfo
What OS and version are you using?
Are you running in a virtualized environment like VMware or KVM?
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at??? Why???
> Funny "easter egg" to say the least...
It only took 7 years for someone to comment on that, misspellings and all :)
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<>
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On 10/31/2014 01:01 PM, Mike Markowski wrote:
> Bug: It is 'Alles klar, Herr Kommissar'. (Nicht 'all ist klar'.)
Thank you for reporting this.
A fix has been generated and pushed to the maintenance branch, and will
become part of the 3.7.5.2 and 3.7.6 releases.
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ite company, and various brands of pretty good beer.
Enough to get by on, anyway. :)
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you’re using (next or
> devel; none of the others are affected). - MLD
This was just fixed earlier this morning on our master branch.
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through GRC.
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for example uhd_fft gives this output:
This is indeed a bug, an unfortunate side effect of a semi-last minute
commit before the 3.7.6 release.
Fortunately, it's a one line bug fix I'll be committing to the
repository shortly.
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hammer, often
used in cases that can be solved some less invasive way.
Think of it like disassembling and reassembling a car transmission just
to shift gears, or tearing down and rebuilding a different road to
change your destination.
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from the GNU Radio Project to all the individual
contributors that continue to grow the GNU Radio software:
Abhishek Bhowmick
Achilleas Anastasopoulos
Doug Geiger
Felix Wunsch
Jiří Pinkava
Johnathan Corgan
Marcus Müller
Martin Braun
Michael Dickens
Michael Ossmann
Nathan West
Nick
'virtual_source_0'*
This may be related to a recent change that was done prior to the 3.7.6
release. I'm investigating.
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On 01/12/2015 05:44 PM, Johnathan Corgan wrote:
> On 01/12/2015 02:25 PM, Richard Clarke wrote:
>
>> "/usr/local/lib/python2.7/dist-packages/gnuradio/gr/hier_block2.py",
>> line 93, in __getattr__
>> return getattr(self._impl, name)
>>
ould work as a "short" term fix.
The longer term proper fix requires a scheduler change as outlined in a
that email Stephan Ludwig asked about. It's in a long list of things
Tom and I are organizing for 3.8 scheduler work.
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he source is
> available under [4].
Just FYI, gr-radar is one of the many GNU Radio-based packages that
comes pre-installed on the live DVD.
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source.
Pybombs, in fact, asks the system package manager whether a binary is
already installed, or is installable that way first. Only if neither of
these are the case does it install from source.
This behavior can be modified through the configuration, but the above
is the default.
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bsite, or visit the Corgan Labs Training Services Page.
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gt;>> it
>>>> > > (I haven't had any issues with 14.04 before). I updated the OS to
>>>> the
>>>> > > latest version and then tried using build-gnuradio. Immediately I
>>>> > > started having
On Thu, Mar 5, 2015 at 2:41 PM, Johnathan Corgan
wrote:
$ apt-get install libgl1-mesa-dev-lts-utopic mesa-common-dev-lts-utopic
>
That would be 'sudo apt-get install ...'
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gt; Thanks,
> Murray
>
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>
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gt; to update build-gnuradio to take this into account.
>
>
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On Wed, Apr 1, 2015 at 12:30 PM, Martin Braun
wrote:
>
> Unfortunately, we can't provide liveSDR ISOs anymore, now, because of
> licensing issues.
Rest assured we are almost ready to announce our GNU Radio Live SDR Floppy
Disk Environment and parallel port license dongle.
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>
>
>
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>
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7;re trying
to figure out the best way to deal with group delay in the pulse shaping
filter.
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en take only the second half
of the samples of the output for the correlation block.
This then "pre-fills" the filter with data that is arguably the right
spectral shape, and the resulting second-half vector works much better than
the original way.
Again, this is a quick hack, but it works
variable block.
If the variable is named 'mod_vec', use:
mod_vec[len(mod_vec)/2:]
...as the taps for the correlation estimator.
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cision by someone who clearly
didn't know what he was doing at the time :-)
I've been wanting to fix this for a long time; looks like 3.8 would be a
good chance to break this properly.
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that you can set up as
variables in GRC. They aren't blocks added to the flowgraph but are still
"GRC blocks".
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__
ought was just for that file)
>
That looks like the error you would get if it were the only XML file to
install. In that case, just delete the entire INSTALL clause. If not, can
you post the CMakeLists.txt file?
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Intro to S
On Thu, May 28, 2015 at 12:05 AM, Marcus Müller
wrote:
> I'll pitch `perf` here (you're on Ubuntu, so it's in the linux-tools,
> probably).
>
I'm pretty sure the issue is as Murray Thomson described above. We've had
to optimize this area in the past in GRC.
y, it might help to understand if the overflow events are "a few
every so often", or continuous.
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Intro to SDR Classes - June 4-5, Columbia MD, June 29-30, El Segundo, CA
http://corganlabs.com
itself. This is a common issue with source blocks that rely on input
message ports for content.
--
Johnathan Corgan
Corgan Labs - SDR Training and Development Services
Intro to SDR Class - June 29-30, El Segundo, CA
http://corganlabs.com
___
Discuss-gnur
ther events, but instead allow the
scheduler itself to do so.
--
Johnathan Corgan
Corgan Labs - SDR Training and Development Services
Intro to SDR Class - June 29-30, El Segundo, CA
http://corganlabs.com
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Discuss-gnuradio mailing list
Discus
You would also have to precede your block with a
block like gr::blocks::unpack_k_bits_bb or ::repack_k_bits_bb to generate
such a stream from a packed byte format.
--
Johnathan Corgan
Corgan Labs - SDR Training and Development Services
Intro to SDR Class - June 29-30, El Segundo, C
On Tue, Jun 16, 2015 at 4:13 PM, Marbellys
wrote:
> So if i use an unpack_k_bits block, and i set k to 1, will I be handle 1
> bit at a time?
Yes.
--
Johnathan Corgan
Corgan Labs - SDR Training and Development Services
Intro to SDR Class - June 29-30, El Segundo, CA
http://corganla
https://github.com/gnuradio/gnuradio.git
>>>>>>> > 3) cd gnuradio
>>>>>>> > 4) sudo mkdir build && cd build
>>>>>>> > 5) sudo cmake ../
>>>>>>> >
>>>>>>> > I get the follow
thrift 0.9.2. Was there
> something else I needed to confirm in the cmake output beyond that?
>
What is your installation prefix?
--
Johnathan Corgan
Corgan Labs - SDR Training and Development Services
Intro to SDR Class - June 29-30, El Segundo, CA
http://corganlabs.com
_
On Mon, Jun 15, 2015 at 7:38 PM, Nowlan, Sean
wrote:
> J Corgan's bootable USB stick on a Minnowboard
>
I'm pretty curious how well this worked and if you ran into any issues or
had to do anything extra for this combination.
--
Johnathan Corgan
Corgan Labs - SDR Training
;m not really sure. That's a question for Eric.
>
The scheduler aims to keep the buffer no more than half full, so that in
the steady state the producing block can write into the free half and the
downstream consuming block(s) read from the filled half.
--
Johnathan Corgan
Corgan Labs - S
roduce(X) to place samples in the output buffer, then what does
> the return statement do? If I return 8000, what does this mean?
>
Use 'return WORK_CALLED_PRODUCE'.
--
Johnathan Corgan
Corgan Labs - SDR Training and Development Services
http://corganlabs.com
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