[Discuss-gnuradio] can I install different gnuradio version under different user sections of 12.04?

[周崴]

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[Discuss-gnuradio] gr::buffer::allocate_buffer: warning:

[Manu T S]

A block that i designed takes a vector of length 408 with numpy.int32
components. Work function just copies input to output. Work function
definition is given below.

def work(self, input_items, output_items):
for i in range(len(input_items[0][0])):
print input_items[0][0][i],
output_items[0][0][i] = input_items[0][0][i]
return len(input_items[0])
-

I'm getting the following warning.

gr::buffer::allocate_buffer: warning: tried to allocate
   40 items of size 1632. Due to alignment requirements
   128 were allocated.  If this isn't OK, consider padding
   your structure to a power-of-two bytes.
   On this platform, our allocation granularity is 4096 bytes.
gr::buffer::allocate_buffer: warning: tried to allocate
   40 items of size 1632. Due to alignment requirements
   128 were allocated.  If this isn't OK, consider padding
   your structure to a power-of-two bytes.

What could be the reason for this warning? What could be done to correct
this?

-- 
Manu T S
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[Discuss-gnuradio] London Meetup details

[Tom Rondeau]

For those of you in and about London next Tuesday, come join me for a
couple of drinks at the Mayflower Pub (117 Rotherhithe Street) at 7pm.

Looking forward to seeing some of you!

Information here:
http://www.trondeau.com/blog/2013/7/2/london-meetup.html

Tom

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Re: [Discuss-gnuradio] Fwd: Problem in uhd_fft

[Marcus D. Leech]

On 07/04/2013 11:51 PM, Karan Talasila wrote:

Hi Josh,
  can you explain how and why the frequency translation 
occurs? secondly when the same basic tx chip is used on a  usrp N210, 
the translation occurs at 50Mhz and after. So for USRP N210, the 
entire range from 0-250 Mhz is represented by alternating between 
-50Mhz to +50Mhz. Why is it that way?


The BASIC_RX and LF_RX have no downconversion hardware in them at all.  
They are basically just "buffers" for the ADCs.  The BASIC_RX has an
  analog reponse that starts to fall off at about 250Mhz, which is why 
it's rated to 250Mhz.


In the USRP1/B100/E1XX systems, the sampling clock is at 64MHz by 
default.  That means the first aliases start to show up at the 1st Nyquist
  frequency of 32Mhz (half of sample rate).   Similarly in the N2XX, 
which a 100MHz sampling clock, those aliases start to show up at 50Mhz.


My suggestion would be to look into so-called bandpass sampling, and 
also, importantly, Nyquist Sampling Theorem.



--
Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
http://www.sbrac.org

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[Discuss-gnuradio] GPRS sniffing with GNURadio and USRPN210

[Weiqing Li]

Dear list,

I am currently trying to make an GPRS sniffer. So far I have google around
and the closest application I found was from Security Research Labs using
osmocom-bb from https://srlabs.de/gprs/. Looking at the presentation in
CCCamp 2011 (
http://events.ccc.de/camp/2011/Fahrplan/attachments/1868_110810.SRLabs-Camp-GRPS_Intercept.pdf)
it seems that the whole purpose of the osmocom-bb is to get the raw data,
which is then sent to the decoding program and then to wireshark. Thus is
it possible to use USRP and GNURadio to capture the raw signals instead of
using osmocom-bb and Motorola phones? If it is possible can you let me know
where and how should I approach this problem? Lastly, if you know a better
approach to capturing the GPRS traffic please let me know. Any help is
greatly appreciated.

Sincerely,

Weiqing Li
weiqing...@gmail.com
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[Discuss-gnuradio] qa_qtgui test fails

[Richard Farina]

I'm one of the maintainers for gnuradio in gentoo, and have a silly
question.  I've noticed the following test failure:

161/174 Testing: qa_qtgui
161/174 Test: qa_qtgui
Command: "/bin/sh"
"/var/tmp/portage/net-wireless/gnuradio-3.7.0/work/gnuradio-3.7.0_build/gr-qtgui/python/qtgui/qa_qtgui_test.sh"
Directory:
/var/tmp/portage/net-wireless/gnuradio-3.7.0/work/gnuradio-3.7.0_build/gr-qtgui/python/qtgui
"qa_qtgui" start time: Jul 05 12:21 EDT
Output:
--
No protocol specified
: cannot connect to X server :0.0

Test time =   0.33 sec
--
Test Failed.
"qa_qtgui" end time: Jul 05 12:21 EDT
"qa_qtgui" time elapsed: 00:00:00
--


Due to multiple factors there is no way for this test to pass in gentoo
as builds are done as a non-privledged user.  Is there a simple way to
disable just this test?  If not, could something be added?

Thanks,
Zero

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Re: [Discuss-gnuradio] GNU Radio Companion v3.7.0-1-g2c05acc1 python name-spaces not working

[Andrew Davis]

Thanks for the suggestion, I removed every trace of GNU Radio off this
machine and re-installed, it did not fix the problem. After further
investigation the problem appears to be related to another problem I have
been having, when I would run any block using filters I would get:

> ImportError: /usr/lib/libgnuradio-filter-3.7.1git.so.0.0.0: undefined
symbol: volk_32f_x2_dot_prod_16i_a

And now when I manual pull in 'analog' in python I get:

> ImportError: /usr/lib/libgnuradio-blocks-3.7.1git.so.0.0.0: undefined
symbol: volk_64u_byteswap_u

So this link problem is what is keeping 'analog' undefined.

When I run 'readelf -d /usr/lib/libgnuradio-filter-3.7.1git.so.0.0.0' I get:

> 0x0001 (NEEDED) Shared library: [libvolk.so.0.0.0]

So I think It is being linked, and when I run 'nm -D
/usr/lib/libvolk.so.0.0.0' I get:

> 002d69f0 D volk_32f_x2_dot_prod_16i
> 002d6a10 D volk_32f_x2_dot_prod_16i_a   <---
> 00042130 T volk_32f_x2_dot_prod_16i_get_func_desc

So I think libvolk exports it ( although i'm not sure why the 'D' is there
).

What else could I check to see why VOLK functions are not getting linked?

Thank you
-Andrew

On Thu, Jul 4, 2013 at 5:17 PM, Stephen Harrison
wrote:

> I had the same problem, but realized I was using the GRC .xml definitions
> from the previous version (in /usr/local/share/gnuradio/blocks).
>
>
> On Thu, Jul 4, 2013 at 2:12 PM, Tom Rondeau  wrote:
>
>> On Thu, Jul 4, 2013 at 4:58 PM, Andrew Davis 
>> wrote:
>> > Hello all,
>> >
>> > I'm using Xubuntu 13.04 and compiled from 3.7git, when I try to run GRC
>> > almost any block that uses constants from the updates name-spaces GRC
>> fails
>> > with:
>> >
>> >> Value "firdes.WIN_HAMMING" cannot be evaluated:
>> >> name 'firdes' is not defined
>> >
>> > or for signal source and related:
>> >
>> >> Value "analog.GR_SIN_WAVE" cannot be evaluated:
>> >> name 'analog' is not defined
>> >
>> > I'm not sure where in GRC these are defined but I will continue to look
>> for
>> > a fix.
>> >
>> > Thank you
>> > ~Andrew
>>
>> Have you removed all other GNU Radio versions from your machine?
>>
>> Also, if these are your own GRC files, might just try typing it in
>> again as the state might be a bit confused after an update.
>>
>> The specific cases you've mentioned have been tested for in the 3.7
>> release, so I think it's something local and/or a confusion after an
>> upgrade (the latter are bound to happen).
>>
>> Tom
>>
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>
>
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Re: [Discuss-gnuradio] can I install different gnuradio version under different user sections of 12.04?

[Adeel Anwar]

http://gnuradio.org/redmine/projects/gnuradio/wiki/FAQ#Experts-only-How-can-I-deliberately-install-GNU-Radio-multiple-times-different-versions


On Fri, Jul 5, 2013 at 12:45 PM, 周崴  wrote:

>
>
>
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Re: [Discuss-gnuradio] Simple QAM project

[Adeel Anwar]

Can u attach ur GRC file?

-Adeel


On Fri, Jul 5, 2013 at 5:48 AM, tom sutherland wrote:

> I am trying to get data through a QAM-16 Modulator and just display the
> data stream on a Constellation Sink. I have 8khz sampled 8-bit data(char)
> going into the QAM Mod block. I have the output of the QAMmod block going
> directly into the Const Sink. I am not seeing anything on the Constellation
> Sink. I put a throttle block in but that didn't help.
> Any thoughts on what could be wrong? I have followed the GNUradio
> tutorial: Part 4 by balint256 but didn't help.
> Thanks...DT
>
>
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Re: [Discuss-gnuradio] Compatible GNU Radio $500 2x2 full duplex MIMO SDR coming to a Kickstarter Shortly

[Martin O'Shield]

Puspraj,


Akash has had this listed for over 7 months, and I've just tried to reach
you on both of the telephone #s you have listed on this post, which neither
of them works.

Did you patent any of this?

And you can contact me off list as you've only replied here.

Again, Akash has had this listed and announced on the GNU Radio mailing
list and yet nothing from you to date?

Did you patent this within India as I checked, believe me?

Sincerely,


Martin

On Sat, Jul 6, 2013 at 12:21 AM, Puspraj Prasad Yadav
wrote:

> Dear Sir ;
>
> ** **
>
> We have the original schematic, board files, Gerber files, Assembly files,
> Bom . It is our design.
>
> The same things Akash Kosgi may have provided you. Because we worked with
> him.
>
> He was previously working as a partner is some company named as “Radion
> Technology”. But he has dismantled the company and run away with all the
> data with him.
>
> We had a tie up with Radion. But Mr. Akash Kosgi duped us and Radion also.
> 
>
> ** **
>
> You are a respected client . You must have verified the credentials of any
> individual before dealing with him.
>
> In India there are many people who claim to be genuine but somewhere they
> stole the data and try to sell overseas clients to make money.
>
> ** **
>
> ** **
>
> ** **
>
> ** **
>
> ** **
>
> ** **
>
> ** **
>
> ** **
>
> Thanks and Regards
>
> ** **
>
> Puspraj
> 
>
> CEO &
> Founder
> 
>
> Xxillence Incorporate
>
> *Mob#9449014171,9341714272,Office#080-23195646*
>
> *Fax No-080-23195646*
>
> Mailto- *puspraj@xxillence .in,* *
> i...@xxillence.in***
>
> No-29,Basement Floor,5th Cross,Ganesha Block,Nandini
> Layout,Bangalore-560096,
>
> Karnataka,INDIA
>
> "A winner is not who never fails,But who never quits"
>
> [image: LOGO]* We have our own responsibilities to protect our planet.Act
> fast or preapare ourselves for the questions to be asked by the generations
> to come.*
>
> ** **
>
> *From:* Martin [mailto:mar...@windycitysdr.com]
> *Sent:* Saturday, July 06, 2013 10:34 AM
> *To:* Puspraj Prasad Yadav
> *Subject:* Re: [Discuss-gnuradio] Compatible GNU Radio $500 2x2 full
> duplex MIMO SDR coming to a Kickstarter Shortly
>
> ** **
>
> Pups raj,
>
> ** **
>
> ** **
>
> This is my first learning about this.
>
> ** **
>
> Please provide me with proof.
>
> ** **
>
> Sincerely,
>
> ** **
>
> ** **
>
> ** **
>
> Martin
>
> Sent from my iPhone
>
>
> On Jul 5, 2013, at 11:49 PM, "Puspraj Prasad Yadav" 
> wrote:
>
> Dear Martin;
>
>  
>
> We have seen this link
> http://lists.gnu.org/archive/html/discuss-gnuradio/2013-07/msg00049.html**
> **
>
>  
>
> It shows that Mr. Akash Kosgi has designed the USRP and USRP2 has designed
> the Layout from scratch.
>
> But we would like to mention that this Layout was Designed by XxiLLENCE
> Incorporate in the Year 2011 for our internal use. And except the software
> part we have developed this from scratch.
>
> Mr. Akash Kosgi was supposed to pay for this and development which we did
> , but he has never paid for this work . Hence forth is has become propriety
> of XxiLLENCE Incorporate.
>
> If you need the ownership of this product then you have to discuss the
> things with us directly.
>
>  
>
> Otherwise we will b free to sell this product to anyone with our sole
> authority.
>
>  
>
>  
>
>  
>
>  
>
>  
>
>  
>
>  
>
>  
>
> Thanks and Regards
>
>  
>
> Puspraj
> 
>
> CEO &
> Founder
> 
>
> Xxillence Incorporate
>
> *Mob#9449014171,9341714272,Office#080-23195646*
>
> *Fax No-080-23195646*
>
> Mailto- *puspraj@xxillence .in,* *
> i...@xxillence.in*
>
> No-29,Basement Floor,5th Cross,Ganesha Block,Nandini
> Layout,Bangalore-560096,
>
> Karnataka,INDIA
>
> "A winner is not who never fails,But who never quits"
>
> * We have our own responsibilities to protect our
> planet.Act fast or preapare ourselves for the questions to be asked by the
> generations to come.*
>
>  
>
>
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