[Discuss-gnuradio] Receiving signal from a signal generator

2012-02-16 Thread guelord ingala
Hi, I've got 2 units of USRP1 and DBSRX dboards. The two USRP are synchronized for master and slave. the uhd_fft.py is responding correctly. Now I want to use a signal generator to provide 900 MHz. signal level is -20 dBm. From the gnuradio-companion, I created a flow graph using UHD-USRP Source

Re: [Discuss-gnuradio] FSK using VCO

2012-02-16 Thread Adeel Anwar
Anju, Try connecting these data_src(0,1)==>chunk to symbol(-1,1)==>fm modulator(sensitivity=(2*pi*(freq_sep/2.0))/samp_rate)) where freq_sep = symb_rate (for non-coherent detection) On receiver side u can use quadrature demoulator -Adeel On Fri, Feb 17, 2012 at 12:42 AM, anju babu wrote

[Discuss-gnuradio] Sampling Rate

2012-02-16 Thread guelord ingala
Hi, I'm getting confused with the concept of "Sampling rate" to set the UHD:USRP Source and other blocks from the gnuradio-companion. If I'm still right, the sampling rate must be at least the double of the operating frequency. But I can see some working applications when this Nyquist theory is

Re: [Discuss-gnuradio] About how to write c++ based signal processing block

2012-02-16 Thread Adeel Anwar
Hi Martin, i have used gr_modtool.py to create custom blocks and all these new blocks are working fine. Thanks to u for this good utility. I have python/gnuradio installed on two machines. Same version of gr_modtool.py (downloaded yesterday) works fine on one but on second machine, it creates new

[Discuss-gnuradio] FSK using VCO

2012-02-16 Thread anju babu
HI all, I'm developing an underwater modem which uses acoustic signal for transmission and reception .for that i need to have a FSK modulator.since CPFSk is not practically possible in underwater ,i decided to use VCO.I have to modulate data from a file sourc(output type byte) using 10kh

Re: [Discuss-gnuradio] UHD on USRP1 v < 500

2012-02-16 Thread Patrik Tast
Great, I'll tar the latest *we have* traditional GR and exec $./build-gnuradio Thanks, Patrik - Original Message - From: Marcus D. Leech To: discuss-gnuradio@gnu.org Sent: Friday, February 17, 2012 2:00 Subject: Re: [Discuss-gnuradio] UHD on USRP1 v < 500 On 02/16/2012 06

Re: [Discuss-gnuradio] problem building gr-howto-write-a-block-cmake

2012-02-16 Thread Achilleas Anastasopoulos
Tom, Can you also email me the result of a fresh cmake ../ on the gr-howto-write-a-block-cmake/build directory (after removing the CMakeCache.txt file) thanks Achilleas On Thu, Feb 16, 2012 at 4:27 PM, Achilleas Anastasopoulos wrote: > I also noticed the following in the cmake ../ > > -- Found

Re: [Discuss-gnuradio] UHD on USRP1 v < 500

2012-02-16 Thread Marcus D. Leech
On 02/16/2012 06:48 PM, Patrik Tast wrote: Hi all, Thanks for the latest developers call. Q1: will an usrp1 < 500 run using uhd? Yup, I do that all the time. I have a very-early USRP1 and I use it frequently with all the latest UHD goop. Q2: if so, will I then be able to use 8bit samples ie

[Discuss-gnuradio] UHD on USRP1 v < 500

2012-02-16 Thread Patrik Tast
Hi all, Thanks for the latest developers call. Q1: will an usrp1 < 500 run using uhd? Q2: if so, will I then be able to use 8bit samples ie 16 msps? Q3: If it *doesn't work*, to wich url do I point to get the *traditional GR*? Patrik___ Discuss-gnuradi

Re: [Discuss-gnuradio] E100 compile error: trondeau safe_align branch

2012-02-16 Thread Josh Blum
On 02/16/2012 02:10 PM, Nowlan, Sean wrote: > Actually, what's the difference between "-march=armv7-a -mtune=cortex-a8" and > "-mcpu=cortex-a8"? I think the second is a deprecated way to say the first. -Josh > > -Original Message- > From: discuss-gnuradio-bounces+sean.nowlan=gtri.gat

Re: [Discuss-gnuradio] E100 compile error: trondeau safe_align branch

2012-02-16 Thread Nowlan, Sean
Actually, what's the difference between "-march=armv7-a -mtune=cortex-a8" and "-mcpu=cortex-a8"? -Original Message- From: discuss-gnuradio-bounces+sean.nowlan=gtri.gatech@gnu.org [mailto:discuss-gnuradio-bounces+sean.nowlan=gtri.gatech@gnu.org] On Behalf Of Nowlan, Sean Sent: Th

Re: [Discuss-gnuradio] Volk branch on github

2012-02-16 Thread Nick Foster
On Thu, Feb 16, 2012 at 1:47 PM, Josh Blum wrote: > > > On 02/16/2012 01:30 PM, Douglas Geiger wrote: > > On Thu, Feb 16, 2012 at 2:08 PM, Josh Blum wrote: > >> > >> Perhaps this is because you have a processor that doesn't penalize you > >> for unaligned loads/stores. > >> > >> -Josh > > > > Wh

Re: [Discuss-gnuradio] Volk branch on github

2012-02-16 Thread Josh Blum
On 02/16/2012 01:30 PM, Douglas Geiger wrote: > On Thu, Feb 16, 2012 at 2:08 PM, Josh Blum wrote: >> >> Perhaps this is because you have a processor that doesn't penalize you >> for unaligned loads/stores. >> >> -Josh > > Which suggests this decision may need to be made on a > per-arch/processo

Re: [Discuss-gnuradio] ATSC decoding - Now Working!

2012-02-16 Thread Nick Foster
No, I don't know where that is... I can always take more data though. I'll post it on a Dropbox tonight or this weekend. I'm pretty sure the Gnuradio ATSC decoder is suffering from some massive bitrot though. If you do get it working for you, *please* post your changes for inclusion into Gnuradio!

Re: [Discuss-gnuradio] E100 compile error: trondeau safe_align branch

2012-02-16 Thread Nowlan, Sean
That was the next thing I did and now (4 hours later :-P) it appears to have worked. I'm not sure why it didn't pick up CMAKE_TOOLCHAIN_FILE. Thanks, Sean -Original Message- From: Philip Balister [mailto:phi...@balister.org] Sent: Thursday, February 16, 2012 1:16 PM To: Nowlan, Sean; GN

Re: [Discuss-gnuradio] ATSC decoding - Now Working!

2012-02-16 Thread shea_watson
Nick, I apologize if this is bringing back old ghosts but I am doing research with ATSC signals and gnuradio and would like that sample ATSC capture that you posted. i cannot find where you posted it. Do you happen to still have it? Thanks, SW Nick Foster-4 wrote: > > Achilleas, > > I live

Re: [Discuss-gnuradio] Volk branch on github

2012-02-16 Thread Douglas Geiger
On Thu, Feb 16, 2012 at 2:08 PM, Josh Blum wrote: > > Perhaps this is because you have a processor that doesn't penalize you > for unaligned loads/stores. > > -Josh Which suggests this decision may need to be made on a per-arch/processor basis, and therefore it may be most appropriate for Volk to

Re: [Discuss-gnuradio] problem building gr-howto-write-a-block-cmake

2012-02-16 Thread Achilleas Anastasopoulos
I also noticed the following in the cmake ../ -- Found SWIG: /usr/bin/swig (found version "2.0.4") -- Could NOT find PythonLibs (missing: PYTHON_LIBRARIES) -- Found PythonInterp: /usr/bin/python2.7 what is the significance of not founding the PythonLibs? when i build gnuradio it says that it fo

[Discuss-gnuradio] Using volk in Mac: test report

2012-02-16 Thread Carles Fernandez
Hi all, We are using the volk library in a C++ program that uses gnuradio-core and currently builds under Linux and MacOS X. In MacOS 1.6.8 (Snow Leopard, updated), I used macports for installing gnuradio-core (which is in version 3.3, enough for my app). Since, in my understanding (please correct

Re: [Discuss-gnuradio] problem building gr-howto-write-a-block-cmake

2012-02-16 Thread Achilleas Anastasopoulos
yes i did that and get the same problem (the swig-related files are not built). BTW, how can using git rm the entire directory gr-howto-cmake and download it from the trunk? thanks Achilleas On Thu, Feb 16, 2012 at 3:53 PM, Tom Rondeau wrote: > On Thu, Feb 16, 2012 at 11:57 AM, Achilleas Anas

Re: [Discuss-gnuradio] problem building gr-howto-write-a-block-cmake

2012-02-16 Thread Tom Rondeau
On Thu, Feb 16, 2012 at 11:57 AM, Achilleas Anastasopoulos < anas...@umich.edu> wrote: > BTW, I forgot to say that I am building from the latest master branch > and I have already built/installed the latest gnuradio from > the master branch. > > Achilleas > > On Thu, Feb 16, 2012 at 11:49 AM, Achi

Re: [Discuss-gnuradio] Seeks Information about GNURadio examples

2012-02-16 Thread Nazmul Islam
Hello Selverine, Look at this ( http://gnuradio.org/redmine/projects/gnuradio/wiki/Tutorials ). Also, search for "Dawei Shen GNUradio tutorial" in google. Nazmul On Thu, Feb 16, 2012 at 2:56 PM, Selverine wrote: > > Hi everybody, > > I'm a beginner, I start working on GNU Radio. > I noted that

Re: [Discuss-gnuradio] Reminder about call today

2012-02-16 Thread Evan Merewether
The easy button to interface to the AC plug would be to pick up some old power line telephone extenders from Radio Shack and cut them open. You could then use the basic RX and TX cards. _ From: discuss-gnuradio-bounces+evan=syndetix@gnu.org [mailto:discuss-gnuradio-bounces+evan=sy

Re: [Discuss-gnuradio] Reminder about call today

2012-02-16 Thread Johnathan Corgan
On Thu, Feb 16, 2012 at 11:49, George Nychis wrote: > Trust me, I am far from an EE person, so ignore any outrageous > misunderstandings ;)  I guess this will start as more of question:  since we > can't stick Rx/Tx directly in to a wall socket... what actually needs to > happen to stick an Rx/Tx

[Discuss-gnuradio] Seeks Information about GNURadio examples

2012-02-16 Thread Selverine
Hi everybody, I'm a beginner, I start working on GNU Radio. I noted that there were many examples, but apart dial_tone I can't understand the code. Does anyone can help me by giving me tutorials that explains the examples? Or any information that they could help me? Thank you a lot! -- View th

Re: [Discuss-gnuradio] Reminder about call today

2012-02-16 Thread Johnathan Corgan
On Thu, Feb 16, 2012 at 10:24, Tom Rondeau wrote: > Powerline communications have been discussed for quite > a while, but they tend to be horrible channels (old copper, long distances, > bad shielding, etc.). So yes, I'd expect OFDM for the equalization and > multipath (or 'echos' in this case) i

Re: [Discuss-gnuradio] Reminder about call today

2012-02-16 Thread George Nychis
> > > Interesting thought. Powerline communications have been discussed for > quite a while, but they tend to be horrible channels (old copper, long > distances, bad shielding, etc.). So yes, I'd expect OFDM for the > equalization and multipath (or 'echos' in this case) issues and heavy > channel c

Re: [Discuss-gnuradio] Volk branch on github

2012-02-16 Thread Josh Blum
On 02/16/2012 11:32 AM, Josh Blum wrote: > > > On 02/16/2012 11:24 AM, Tom Rondeau wrote: >> On Thu, Feb 16, 2012 at 2:08 PM, Josh Blum wrote: >> >>> Also, you never want to work on the smallest amount of memory possible. This is covered in my discussion on my blog. Making arbitraril

Re: [Discuss-gnuradio] Volk branch on github

2012-02-16 Thread Josh Blum
On 02/16/2012 11:24 AM, Tom Rondeau wrote: > On Thu, Feb 16, 2012 at 2:08 PM, Josh Blum wrote: > >> >>> Also, you never want to work on the smallest amount of memory possible. >>> This is covered in my discussion on my blog. Making arbitrarily small >> calls >>> to work functions causes much mo

Re: [Discuss-gnuradio] GRC: Just compile XML, no GUI

2012-02-16 Thread Paul Miller
On Thu, Feb 16, 2012 at 10:19:31AM -0800, Josh Blum wrote: > > I was wondering if it's a big deal to give gnuradio-companion a switch > > to just compile a .grc file without firing up the GUI. > Give this a shot: https://github.com/jettero/grcc/blob/grcc/grcc > -Josh This is exactly why I wrote g

Re: [Discuss-gnuradio] Volk branch on github

2012-02-16 Thread Tom Rondeau
On Thu, Feb 16, 2012 at 2:08 PM, Josh Blum wrote: > > > Also, you never want to work on the smallest amount of memory possible. > > This is covered in my discussion on my blog. Making arbitrarily small > calls > > to work functions causes much more overhead than just running the > unaligned > > v

Re: [Discuss-gnuradio] Volk branch on github

2012-02-16 Thread Josh Blum
> Also, you never want to work on the smallest amount of memory possible. > This is covered in my discussion on my blog. Making arbitrarily small calls > to work functions causes much more overhead than just running the unaligned > version of a Volk call. I found this out pretty quickly when I sta

Re: [Discuss-gnuradio] GRC: Just compile XML, no GUI

2012-02-16 Thread Tom Rondeau
On Thu, Feb 16, 2012 at 1:47 PM, wrote: > ** > > On Thu, 16 Feb 2012 13:20:05 -0500, Tom Rondeau wrote: > > On Thu, Feb 16, 2012 at 11:39 AM, Martin Braun wrote: > >> Hi (most likely Josh), >> >> I was wondering if it's a big deal to give gnuradio-companion a switch >> to just compile a .grc file

Re: [Discuss-gnuradio] GRC: Just compile XML, no GUI

2012-02-16 Thread mleech
On Thu, 16 Feb 2012 13:20:05 -0500, Tom Rondeau wrote: > On Thu, Feb 16, 2012 at 11:39 AM, Martin Braun wrote: > >> Hi (most likely Josh), >> >> I was wondering if it's a big deal to give gnuradio-companion a switch >> to just compile a .grc file without firing up the GUI. >> >> Specifical

Re: [Discuss-gnuradio] Reminder about call today

2012-02-16 Thread Tom Rondeau
On Thu, Feb 16, 2012 at 11:06 AM, George Nychis wrote: > Hey all, > > I actually really want to join the call, because I have a GSoC idea, but I > have a conflict with teaching assistant duties during that time. > Hi George, Sorry the timing won't work out this month. > So I thought I'd brie

Re: [Discuss-gnuradio] GRC: Just compile XML, no GUI

2012-02-16 Thread Tom Rondeau
On Thu, Feb 16, 2012 at 11:39 AM, Martin Braun wrote: > Hi (most likely Josh), > > I was wondering if it's a big deal to give gnuradio-companion a switch > to just compile a .grc file without firing up the GUI. > > Specifically, I was hoping to have unit tests for GRC files, so I wanted > to auto

Re: [Discuss-gnuradio] GRC: Just compile XML, no GUI

2012-02-16 Thread Josh Blum
On 02/16/2012 08:39 AM, Martin Braun wrote: > Hi (most likely Josh), > > I was wondering if it's a big deal to give gnuradio-companion a switch > to just compile a .grc file without firing up the GUI. > > Specifically, I was hoping to have unit tests for GRC files, so I wanted > to automaticall

Re: [Discuss-gnuradio] E100 compile error: trondeau safe_align branch

2012-02-16 Thread Philip Balister
On 02/16/2012 09:39 AM, Nowlan, Sean wrote: > Hi all, > > I'm trying to build Tom's branch with the recent changes to use Volk, but I'm > getting an error. I ran this command: > > cmake -DCMAKE_INSTALL_PREFIX=/usr > -DCMAKE_TOOLCHAIN_FILE=../cmake/Toolchains/arm_cortex_a8_native.cmake > -DENAB

[Discuss-gnuradio] E100 compile error: trondeau safe_align branch

2012-02-16 Thread Nowlan, Sean
Hi all, I'm trying to build Tom's branch with the recent changes to use Volk, but I'm getting an error. I ran this command: cmake -DCMAKE_INSTALL_PREFIX=/usr -DCMAKE_TOOLCHAIN_FILE=../cmake/Toolchains/arm_cortex_a8_native.cmake -DENABLE_GR_QTGUI=OFF -DCMAKE_BUILD_TYPE=release ../ And got thi

Re: [Discuss-gnuradio] problem building gr-howto-write-a-block-cmake

2012-02-16 Thread Martin Braun
On Thu, Feb 16, 2012 at 11:49:10AM -0500, Achilleas Anastasopoulos wrote: > >>> import howto > Traceback (most recent call last): > File "", line 1, in > File "/usr/local/lib64/python2.7/site-packages/howto/__init__.py", > line 45, in > from howto_swig import * > ImportError: No module na

Re: [Discuss-gnuradio] problem building gr-howto-write-a-block-cmake

2012-02-16 Thread Achilleas Anastasopoulos
BTW, I forgot to say that I am building from the latest master branch and I have already built/installed the latest gnuradio from the master branch. Achilleas On Thu, Feb 16, 2012 at 11:49 AM, Achilleas Anastasopoulos wrote: > OK, I am having a problem building the howto module with CMake. > > H

[Discuss-gnuradio] problem building gr-howto-write-a-block-cmake

2012-02-16 Thread Achilleas Anastasopoulos
OK, I am having a problem building the howto module with CMake. Here is the output of all the steps: [anastas@jefe build]$ cmake ../ -- The CXX compiler identification is GNU -- Check for working CXX compiler: /usr/lib64/ccache/c++ -- Check for working CXX compiler: /usr/lib64/ccache/c++ -- work

[Discuss-gnuradio] GRC: Just compile XML, no GUI

2012-02-16 Thread Martin Braun
Hi (most likely Josh), I was wondering if it's a big deal to give gnuradio-companion a switch to just compile a .grc file without firing up the GUI. Specifically, I was hoping to have unit tests for GRC files, so I wanted to automatically use the GRC checking features to test .grc files. However,

Re: [Discuss-gnuradio] Reminder about call today

2012-02-16 Thread George Nychis
Hey all, I actually really want to join the call, because I have a GSoC idea, but I have a conflict with teaching assistant duties during that time. So I thought I'd briefly share, and if it does become of interest then maybe someone can get ahold of me and I could try to mentor or something. I

[Discuss-gnuradio] Reminder about call today

2012-02-16 Thread Tom Rondeau
This is just a reminder about today's Developers' Call. Due to other conflicts, the time has been changed from the normal time to 1600 EST or 2100 UTC. http://gnuradio.org/redmine/projects/gnuradio/wiki/Call20120216 We'll probably want to spend a significant amount of time on discussing the proje

[Discuss-gnuradio] USRP Request

2012-02-16 Thread guelord ingala
I started a new project involving GNURadio and USRP. I'm using Ubuntu 11.10 and GNU Radio Companion v3.5.1-9-g4beff39a. The hardwares I've got are: 2 units of USRP1 Rev 4.1 and DBSRX Rev2.1. I've got 2 questions: 1. These versions of USRP and daughter boards are still compatible with the versi

Re: [Discuss-gnuradio] "GNU Radio is crap" and GSoc

2012-02-16 Thread Andrew Davis
>I don't agree. We'll hopefully settle the matter some day. :-) Me too, DREAM is an amazing SDR program that could benefit from GNURadio and show off GNURadio as-well. But this idea has been batted around before and never really develops, possibly due to the way GNURadio is currently setup. When I

Re: [Discuss-gnuradio] "GNU Radio is crap" and GSoc

2012-02-16 Thread Jens Elsner
Andrew, Am 15.02.2012 19:41, schrieb Andrew Davis: Well some major GNUradio program would drive up sales of USRP's :) Back on topic, IMHO Gnuradio's problem with large apps stems from it trying to be the source to sink and everything in between of a radio. Lets take DREAM for example, they d