to do essentially nothing if it doesn't itself care for the
tags.
On 25.02.22 21:55, Marcus Müller wrote:
> Hi Thomas,
>
> sadly, within the GNU Radio 3.x framework, this isn't possible.
>
> There's one possible "lower effort" solution. Assume you
completly useless on an algorithmic point of
view.
Is there a clever way to add tags without copying the samples?
Thanks for your answers.
Thomas
eceive "O"s (i.e. the device's internal buffers
become full) with this setup?
Thanks for your answers.
Thomas
ssion issue, but that's
another issue).
Okay, maybe I'll come later here with another topic about installing
gr-ieee802-11 :)
Thank you,
Best regards,
Thomas
Le ven. 2 avr. 2021 à 22:34, Ryan Volz a écrit :
> Hi,
>
> This looks like a bug in UHD 4.0.0.0 that has been fixe
FO] [B200] Asking for clock rate 20.00 MHz...
[INFO] [B200] Actually got clock rate 20.00 MHz.
[INFO] [MULTI_USRP] 1) catch time transition at pps edge
[INFO] [MULTI_USRP] 2) set times next pps (synchronously)
O
>>> Done
Thank you for the attention given to my problem,
Thomas
tion decoder block
works?
Thanks for your help.
Regards,
Thomas
Hi guys just trying to get set up with gr, my companion was working
before but next time I opened and thereafter when I went to open I have
been getting this error
I have removed and purged a bunch of times already and still no fix,
anyone seen this before and know what the problem is?
cause UB. Off
the top of my head I don't know the right types to use)
Not very nice with two mod ops per time this is needed, though. For
the PR linked to this would happen every sample.
Another option is a thread-local stack, which would make
allocs/deallocs very cheap. Assuming all u
member, and instead just have local variable
`alignas(64) float tmp;`.
--
typedef struct me_s {
char name[] = { "Thomas Habets" };
char email[] = { "tho...@habets.se " };
char kernel[]= { "Linux" };
char *pgpKey[] = { "http://www.habets.pp.
s {
char name[] = { "Thomas Habets" };
char email[] = { "tho...@habets.se" };
char kernel[]= { "Linux" };
char *pgpKey[] = { "http://www.habets.pp.se/pubkey.txt"; };
char pgp[] = { "9907 8698 8A24 F52F 1C2E 87
https://github.com/tom-kl/gnuradio/blob/master/alamouti_ofdm_rx_impl.cc
Hello all,
I have found this code for a gnuradio block with three input and two output
ports simulating the alamouti decode stage for an ofdm system.
Inside the code the channel state (hestimate) is also calculated.
I'm not g
https://github.com/tom-kl/gnuradio/blob/master/alamouti_decode_cc_impl.cc
Hello all,
I have found this code for a gnuradio block with one input and two output ports
simulating the alamouti decode stage for an ofdm system.
Inside the code the channel state (h00,h01,h10,h11) is also calculated.
I'm
://github.com/ThomasHabets/gnuradio/commit/fa1bbccfa6bab21f2e8c21af1e3f33b94bba4528
https://github.com/ThomasHabets/gnuradio/commit/7e0cb2b8263b7890a4307724ac5e6386fb175b32
Branch:
https://github.com/ThomasHabets/gnuradio/tree/costas-template
--
typedef struct me_s {
char name[]
Great, thanks!
I think this GREP should all be done on a second digit change, so when
I have some more time I'll update it accordingly.
On Tue, 21 Jan 2020 10:12:46 +, "Müller, Marcus (CEL)"
said:
> Hi Thomas,
>
> as Nate wrote: we guarantee ABI compatibility between
ll/19
--
typedef struct me_s {
char name[] = { "Thomas Habets" };
char email[] = { "tho...@habets.se " };
char kernel[]= { "Linux" };
char *pgpKey[] = { "http://www.habets.pp.se/pubkey.txt"; };
char pgp[] = { "9907 8698 8A24 F52
Oh, it is "File Sink" not "Tagged file sink", didn't see sorry.
Le mar. 8 janv. 2019 à 08:20, Thomas Lavarenne
a écrit :
>
>
> Hi,
>
> But, the issue is that correlate access code-tag block is not working and
>> producing tags, so that my output fil
quot; (with value: True) to trigger the saving
of the data.
Best regards,
Thomas
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> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
>
pulses.
>
> -Andy
>
--
typedef struct me_s {
char name[] = { "Thomas Habets" };
char email[] = { "tho...@habets.se " };
char kernel[]= { "Linux" };
char *pgpKey[] = { "http://www.habets.pp.se/pubkey.txt"; };
char pgp[] = { "99
gt;
> Why is the M&M algorithm discouraged?
> I use successfully both in FSK and PSK demodulators. It seems to perform
> fine.
>
> Regards,
> Adrian
>
>
> On April 2, 2018 8:48:00 AM UTC, Thomas Habets wrote:
>>
>> Hi.
>>
>> As an experiment I'm
d do some of this in GR, but syncing to the signal would be
>> hard because you would miss a few transitions trying to get synced.
>>
>> On 04/02/2018 04:48 AM, Thomas Habets wrote:
>>
>>> Hi.
>>>
>>> As an experiment I'm trying
's just noise.
On 2 April 2018 at 10:41, Marcus Müller wrote:
> Hi Thomas,
> This is a very nice demodulation! Congratulations!
>
> Regarding frequency sync: I count roughly 80 bits in your packet. Is there
> some synchronization preamble perhaps in the beginning, where the qua
tps://blog.habets.se/tmp/ft8_packet.png
[1] Like https://www.youtube.com/watch?v=rQkBDMeODHc which I turned into
https://github.com/ThomasHabets/radiostuff/blob/master/
gr-habets/python/magic_decoder.py
--
typedef struct me_s {
char name[] = { "Thomas Habets" };
char email[] =
age_stream_tags.html
That would require a sync-block which just hands the samples along and tags
accordingly.
Best Regards,
Thomas
sweep_test.grc
Description: sweep_test.grc
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proposing. In this case silence is not affirmation. I'm not being
critical of the community, I take the lack of a response as an answer to my
question.
On Wed, May 3, 2017 at 11:49 AM, Marcus Müller
wrote:
> Hi Tom,
>
> On 05/03/2017 05:21 PM, Thomas Wilkinson wrote:
>
>
millions of samples needing processing per second, so it totally does not
> work", or "my computer is fast enough, it reliably works in all modes".
>
> Best regards,
>
> Marcus
>
> On 14.04.2017 18:58, Thomas Wilkinson wrote:
>
> Just wanted to push this inqu
Just wanted to push this inquiry back to the surface:
Is anyone aware of GR-IEEE802-11 having been implemented with an embedded
system? If so, what is the maximum data rate achieved?
Thanks,
Tom
On Wed, Apr 12, 2017 at 3:22 PM, Thomas Wilkinson wrote:
> Is anyone aware of GR-IEEE802
Is anyone aware of GR-IEEE802-11 having been implemented with an embedded
system? If so, what is the maximum data rate achieved?
Thanks,
Tom
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Understood. Thanks!
On Fri, Mar 31, 2017 at 2:32 PM, Marcus Müller
wrote:
> Depends on where you are. But usually, no.
>
> On 31.03.2017 19:54, Thomas Wilkinson wrote:
>
> Legally, I can perform tests within ISM bands. Correct?
>
> On Fri, Mar 31, 2017 at 1:14 PM, Martin B
Legally, I can perform tests within ISM bands. Correct?
On Fri, Mar 31, 2017 at 1:14 PM, Martin Braun wrote:
> You can change the frequency technically. Legally, we can't give you
> advice here other than to follow the rules.
>
> Cheers,
> Martin
>
> On 03/30/2017
Please forgive me as I am new to SDRs and DSP.
I am interested in development of a radio link using two B210s and
GR-IEEE802-11. However, I would like for this link to operate at any
frequency. I am interested in a robust waveform with minimum of 11MBPS
throughput, which is why I am interested i
08:27 AM, Thomas Wright wrote:
>
> Hi all,
>
> I have a simple flowgraph:
>
> usrp n210 -> low pass filter -> stream to vector decimator -> msg queue
> sink
>
> with important parameters:
> sample rate = .195312 MSps
> vector length = 128
> decima
Hi all,
I have a simple flowgraph:
usrp n210 -> low pass filter -> stream to vector decimator -> msg queue sink
with important parameters:
sample rate = .195312 MSps
vector length = 128
decimation rate = 16
msg queue length = 1
and my application is trying to capture samples of a given signal a
I have a new ettus B200 with TCXO (no antenna) plugged into my ZOTAC ZBOX USB3
port running Debian 7.7. I recently built gnuradio with the build-gnuradio
script.
I was trying to build a broadcast FM radio receiver from available examples
and was having some problems, so I created a simple flow
(the proper method)? I was doing it the wrong way for quite some
> time and that caused issues with hardware access.
>
> Lou
>
>
>
> Thomas Early wrote
>
> > I'm just getting started with grc but I am having problems already.
> >
> > I have a simpl
I'm just getting started with grc but I am having problems already.
I have a simple flow graph: an audio source with a device name "hw:1,0"
connected to a WX scope sink.
hw:1,0 is my Logitech headset according to 'arecord -l'.
The first time i run my flow graph after booting up, it works fine.
Greetings Marcus,
Thank you for your prompt response and assistance!
Once I knew that it was looking for a software module I realized I
probably specified the wrong location for the fcdproplus module
installation. The instructions on GitHub state to specify the path
"". I initially
Greetings,
My platform is the Mint 13 distribution of Linux which is based on
Ubuntu 12.04.
I have been struggling with gnuradio trying to get it to work with
my FuncubeProPlus dongle for which I have installed the latest
fcdproplus package a couple of times. The example application
On Thu, Jul 25, 2013 at 6:42 AM, Ralph A. Schmid, dk5ras
wrote:
> To get OpenBTS up and running together with the USRP1 I need gnuradio 3.4.2.
> These instructions here
>
> http://gnuradio.org/redmine/projects/gnuradio/wiki/UsingLibusrpWith3_5
>
> are a good way to go, did this several times with
Your qwt version is older than 5.2.0. Part of the QwtScaleDiv
interface was changed between 5.1.1 and 5.2.0 - just a rename
actually.
lBound --> lowerBound
hBound --> upperBound
You can either update your version of qwt or rename the non-existent
calls
On Sat, Mar 23, 2013 at 5:36 PM, Sid Boyce wrote:
> I don't know if anyone has attempted it but I thought I'd have a go on
> Ubuntu 12.10 on an ODROID-X.
> Main problem it reports is a known bad version of boost that prohibits it
> building gnuradio-core and other components.
I just compiled on A
running it's own applications without the
> CPU. Sounds like Volk could take advantage of it as well.
Access issues aside, that is the way the Raspberry Pi should be used.
The big, powerful GPU is the exciting part and there just happens to
be a usable ARM processor attached on the side.
essible internal or
external 10 MHz reference source.
Also, OpenBTS is not gnuradio, and the openbts-discuss or usrp-users
lists may be better sources for that type of information.
http://lists.sourceforge.net/lists/listinfo/openbts-discuss
http://lists.ettus.com/mailman/listinfo/usrp-users_lists.
On Wed, May 2, 2012 at 8:18 AM, Ben Wojtowicz wrote:
> Thomas,
>
> Thanks for giving it a try!! If you get me your VZW recording, I can
> take a closer look to see what is going wrong with the SIB decoding.
I'll try to post some captures by the end of the week. I should
mention
tter maintenance and support you
will likely receive.
Also, with libusrp no longer being supported by GNURadio, the OpenBTS
mailing list may be a better place to ask questions.
http://sourceforge.net/mail/?group_id=230904
Thomas
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al with a discone antenna near the window, but the CRC check on
the DCI never clears. I'll play with it some more when I have some
free time (unfortunately not in the near future). Really cool stuff
though.
Thomas
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Di
// look at LSB only
> }
The piece was committed almost 6 years ago - into CVS - and has not
changed since. Like many things, I'm sure it seemed like a much better
idea at the time.
Thomas
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ef run(self):
+return
class tune(gr.feval_dd):
"""
@@ -306,6 +310,9 @@ def main_loop(tb):
if __name__ == '__main__':
+t = ThreadClass()
+t.start()
+
tb = my_top_block()
try:
tb.start()
s part of the legacy API for libusb-0.1.
http://libusb.sourceforge.net/doc/function.usbcontrolmsg.html
Thomas
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gh not for the
aforementioned ZigBee implementation.
> So, which one should I buy? N200 or E100 Series? Which Model?
That depends on your specific objectives. What are your primary
concerns? Lowest price? Largest Bandwidth? Embedded form factor?
Thomas
__
I hope
> that there must be a fuse that is replaceable or some sort of mechanism to
> prevent the USRP from being fried. Any help will be greatly appreciated.
Do the LED's work? If not, check the fuse on F501.
Thomas
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>
> Do the uhd example apps work?
> Can you import the gnuradio python module?
A similar, more detailed report was posted a few weeks ago.
http://osdir.com/ml/discuss-gnuradio-gnu/2011-10/msg00227.html
Thomas
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re people had uploaded some dumps of various things,
> but perhaps I'm wrong.
You might find something useful on CRAWDAD. Most of the datasets are
for higher layers, but there appears to be sample data in the RF
section.
http://crawdad.cs.dartmouth.edu/
Thomas
_
t information for the administrator or
anything on getting access. Do you know where I can find that
information?
Thomas
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I am trying to record data directly from a UDP stream to file. I have four
channels at 1.2MHz sample rate the code is below. Basically it opens a UDP
source and connects to a file sink. However, It is losing data when writing
to the file. If I stream a signal with a one second burst the spacing is
obvious
areas - for example by seeing what power management is up to.
Thomas
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cc_s.so.1 /lib/libgcc_s.so.1
520 4.1497 libm-2.12.2.so__ieee754_rem_pio2f
Thomas
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cc/ARM-Options.html
"`softfp' allows the generation of code using hardware floating-point
instructions, but still uses the soft-float calling conventions."
"Use -mfloat-abi=softfp with the appropriate -mfpu option to allow the
compiler to generate code that makes use of the ha
this case largely comes from floating
point math performance, though that's a vague and not particularly
useful conclusion.
OProfile report:
http://ttsou.github.com/gnuradio/dab_demod_oprof.txt
OProfile report with symbols:
http://ttsou.github.com/gnuradio/dab_demod_symbols.txt
Th
On Tue, Jun 28, 2011 at 2:57 PM, Praveen Vikram
wrote:
> Thanks Josh and Thomas,
> I followed the current instructions on the wiki and updated the kernel
> modules (for my current 2.6.35 kernel).
> Now I'am able to run uhd_usrp_probe with this image
> http://www.ettus.com/
On Wed, Jun 22, 2011 at 2:13 PM, Philip Balister wrote:
>
> Did you rerun configure adding -fPIC to CFLAGS? I ddi get the library to
> build as a shared library.
That worked for me.
Thomas
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that the updates will eventually
propagate, is it possible to add redirects in the meantime?
Thomas
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only sign that something is wrong.
> Here is the openBTS config I use:
> http://pastebin.com/raw.php?i=aUQfYWGu
> (This is the last I used, but I tried several other configs)
Nothing wrong here.
> I would be glad if somebody had an idea w
Yes, I did...
My custom module showed up in gnuradio-companion after I ran make
install... But, I couldn't load it in python script.
Thomas
From: Nick Foster
To: Thomas H Kim
Cc: Discuss-gnuradio@gnu.org
Date: 06/06/2011 01:08 PM
Subject:Re: [Discuss-gnuradio]
script, I get import error
saying there is no such as module.
Is there anything like Python configuration file which contains all paths
to Python module? If so, what do I need to modify?
Your help will be appreciated.
Thanks,
Thomas
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I am testing the tunnel.py program on a USRP1 w/ WBX dboard and UHD. My goal
is to disable to receiver while I am transmitting, and then re-enable it
once I'm done. I looked at db_wbx_common.cpp and found the enabler
functions. Each of these programs a few GPIO bits. Using that as a guide I
was abl
Hello all,
Currently I am testing a modified version of tunnel.py, but I am seeing some
strange results. My modifications were essentially a re-factoring to prepare
for future additions, however somehow I was able to receive a transmitted
packet on the same USRP that transmitted it.
The USRP tran
(rd status -2) No such file or directory" is a
gnuradio error message specific to libusb-0.1. I'm curious about
errors being generated by libusb-1.0, which would be more helpful for
debugging purposes.
When you attempt to reestablish a USB connection after a crash, it
te
osted examples. Please
try compiling with the --fusb-tech=libusb1 option and post any error
output. It may not solve the problem, but debugging with libusb is
simpler than debugging through the kernel.
Thomas
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empt to
restart after it crashes?
Thomas
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o pull usrp power plug and usb plug but it did not help.
The error is coming from the kernel. Can you describe your system setup?
Thomas
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emoved. Since the libusb-1.0 asynchronous
interface is largely modelled after the Linux kernel interface, this
layer is "thin" and the differences are negligible in the most cases.
Thomas
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Hello William, Hello David,
i had this problem too.
I changed my tunnel.py to understand mac better into a simple program which
sends a packet and when the receiver gets the packet the receiver sends an
acknowledge back.
After a short time period the exception was thrown.
I found out
what condition it toggles,
2) if it can happen when USRP underrun (uU) occurs
3) if there is a schematic for RFX2400 and usrp1 available?
I'm using gnuradio 3.2.2.
Thanks,
Thomas
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ddress OpenBTS questions to the openbts-discuss mailing list.
http://sourceforge.net/mail/?group_id=230904
Thomas
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e/user/gnuradio
> ?
pkg-config will take care of this for you. Set the PKG_CONFIG_PATH
environment variable to point to the directory of the installed
usrp.pc file.
Thomas
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d the error output.
Do you know the problem? Which one are the possible error causes?
Thank you
Thomas
Installation gnuradio with UHD
UHD Version:
Name: UHD
Description: Ettus Research - Universal Hardware Driver
Requires:
Version: 003.20110307152328.1
Libs: -L${libdir} -luhd
Cflags: -I${inclu
I am trying to implement a simple RX/TX cycle with a single WBX dboard in
order to sense and transmit. I want to sense for a short period, then
transmit data, and then repeat. This is going to happen at the same
frequency however, so I need to eliminate interference from the TX when I am
sensing.
f the UHD examples without gnuradio?
> The following is the version info printed when I run the flowgraph:
> linux; GNU C++ version 4.5.3 20110214 (prerelease); Boost_104500;
> UHD_0001.20110224034946.
On the E100:
linux; GNU C++ version 4.5.2 20101204
Sent 0 samples of packet 241
...
Thomas
---
host/examples/tx_timed_samples.cpp |3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/host/examples/tx_timed_samples.cpp
b/host/examples/tx_timed_samples.cpp
index f10d7e4..1f87ae3 100644
--- a/host/examples/tx_timed_sample
out
Vitals:
GNU C++ version 4.5.2 20101204 (prerelease); Boost_104100;
UHD_003.20110226000831.77641c6
Linux version 2.6.35 (balister@astro) (gcc version 4.5.2 20101026
(prerelease) (GCC) ) #1 PREEMPT Fri Nov 5 08:56:09 PDT 2010
usrp_e100_fpga_compat3_feb_25.bin
Thomas
___
I'd like to recreate this issue on my newly setup E100, but, at the
moment, I'm not seeing any USB devices, and I think I just bricked my
FPGA. So I need to get a little bit more settled until I can try out
additional things. Perhaps later this week...
Thomas
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ee if the
problem goes away, but UHD is the long term solution.
Thomas
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? Would it be easier to rewrite it from scratch or can some
of the gnuradio code be reused?
Thanks for any information you can provide,
Thomas
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and buffer space are available. FIFO buffers
in both directions allow for full duplex operation.
There's a good summary of the main run loop on the wiki page.
http://gnuradio.org/redmine/wiki/1/UsrpFAQFX2
Thomas
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Disc
Hello all,
It looks as though I have uncovered GNU Radio bug #199 in one of my
programs. I used gr_bin_statistics_f as a template and designed a new block
which uses the same method to callback to Python code and retune the USRP.
http://gnuradio.org/redmine/issues/show/199
Now, I could get into
owing diff
reproduces the issue. Thoughts? Thanks.
If so, what
extra step is necessary?
Thanks,
Thomas
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I have two USRP1 boxes and four RFX2400 daughter cards. It looks that one
of the two USRP1 box does not recognize three of four daughter cards.
I pluged in the daughter card to a USRP1 one by one and ran
benchmarck_tx.py script with the center frequency set to 2.4G. All four
daughter cards ran
d the USRP as MIMO
system, I assume having two daughter boards is allowed.
Does anyone have any clue?
Thanks,
Thomas
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Hi all,
I wonder if I can access message data of this class? It has to_string()
function, but I want to carry some binary data via message. I looked at
the documentation, but it did not look like it had any way to pass the
data.
Thanks,
Thomas
Hello,
I was running Hydra MIMO testbench on USRP and got stream of this message:
usrp_source: overrun
drop 16384 bytes
Does anyone know what it means by overrun?
Thanks,
Thomas
From: Josh Blum
To: Patrik Eliardsson
Cc: "discuss-gnuradio@gnu.org"
Date: 12/16/201
ec_t(0, num_samps_in_last_packet, host_sample_rate)
Yes. I timestamp every packet. I also mark every packet
start_of_burst. I wonder if late unmarked packets will still transmit,
though this would not remove the necessity of detecting underruns on
the host.
Thomas
_
nBTS USRP2 implementation uses get_time_now() to resync the
host when an underrun occurs. Obviously, you shouldn't bother sending
a packet if the difference between usrp time and the transmit
timestamp is negative or near zero.
http://github.com/ttsou/openbts-uhd/blob/master/public-tru
My applications deal with continuous streaming, which
requires occasionally dropping samples to maintain synchronization,
and that occurs on the host.
I should note that most of my testing was before host based flow
control was merged. I haven't noticed any significant changes
afterwa
i)); % put the data into a complex vector
%
% ... some processing here
%
fclose(fid);
Regards,
Thomas
On 12/07/2010 01:17 AM, abhijeet mate wrote:
Hi,
I am new to gnu radio and I have a dat file (complex or float)
captured from file sink which was directly connected USRP.
Can anyone help me
before
you can run the IFFTs.
For us the GPU is the device which enables our application to run in
real-time, which we could hardly achieve with the CPU. But getting the
GPU into GNURADIO is another story, I guess...
Regards,
Thomas
On 12/01/2010 03:40 PM, Marcus D. Leech wrote:
Is anyone out
(!) stream the data via a single gigabit Ethernet cable with the
current UHD library? This would enable us to place our receivers at
arbitrary locations without the need of pulse generators and a 10 MHz
reference.
Regards,
Thomas
es will
communicate to the host via ethernet.
Do you have any schedule for that development? Does this mean that the
data (physically) streams from the slave devices throught the master
device before going out through a single ethernet cable?
Regards,
Thomas
--
**
Hi Josh,
Thanks for your hints. It turned out that I had two libuhd.so. One (new
one) in /usr/local/lib and one old one in /usr/local/lib64. GRC always
loaded the old one which caused the crash. After deleting both and doing
a fresh install the problem seems to be solved.
Thanks.
Thomas
?
Regards,
Thomas
On 11/22/2010 03:50 PM, Thomas Hobiger wrote:
Hi,
Thanks for this hint. I seems I had to update my repo to get the
latest source which provides provides the ref clock switch.
Sorry for taking your time and thanks for the help.
Thomas
On 11/22/2010 03:04 PM, Josh Blum wrote:
http
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