[Discuss-gnuradio] An update on my repository (a repo for RHEL/CentOS which has gnuradio)

2010-05-29 Thread Brett L. Trotter
First please let me note that I will not and do not email this list about the repo except when I have an update pertaining to gnuradio. When I first started the repo, I was only building packages for x86_64, but soon after adopted mock and built most of them for i386 as well, but the sdcc source r

[Discuss-gnuradio] Gnuradio 3.2.2 for RHEL 6

2010-06-03 Thread Brett L. Trotter
I know there aren't too many folks toying with RHEL 6 yet, but I've uploaded gnuradio 3.2.2 RPMS (i386 + x86_64) for RHEL 6 on the new repo. For info: http://blackopsoft.com/RHEL_6 ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.

[Discuss-gnuradio] gnuradio with alternate python

2010-06-26 Thread Brett L. Trotter
I'm just now getting to a gnuradio project and hadn't had much of a chance to dogfood my gnuradio RPM from my repo. Now that I'm getting to it, all of the examples scripts have #!/usr/bin/env python hardcoded at the top. I was thinking the build process (which already knows the appropriate python)

[Discuss-gnuradio] gr_vmcircbuf_createfilemapping not available?

2010-06-26 Thread Brett L. Trotter
[r...@aurora rng2]# usrp_rx_cfile.py -R A:0 -d 4 -g 18 -f 8M -N 1.5M -s /tmp/brx_8m_d4_g18_1.5msamples-06-26-10_13-22-37 Using RX d'board A: Basic Rx USB sample rate 16M gr_vmcircbuf_createfilemapping: createfilemapping is not available [r...@aurora rng2]# ls -lh /tmp/brx_8m_d4_g18_1.5msamples-06-

Re: [Discuss-gnuradio] gnuradio with alternate python

2010-06-26 Thread Brett L. Trotter
f message- thanks for clearing that up, its been a while since I've seen that message. -Brett On 06/26/2010 05:10 PM, Eric Blossom wrote: > On Sat, Jun 26, 2010 at 12:32:38PM -0500, Brett L. Trotter wrote: > >> I'm just now getting to a gnuradio project and hadn't

[Discuss-gnuradio] quick question regarding usrp_rx_cfile

2010-10-12 Thread Brett L. Trotter
With the -s option on, what is the byte ordering of the output? eg is a sample 0xABCD being written as 0xCD, 0xAB, or 0xAB, 0xCD? ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio

[Discuss-gnuradio] UHD help

2010-10-19 Thread Brett L. Trotter
I have UHD built, "burned" a UHD firmware to SD, the USRP2 pings, uhd_find_devices is happy- how do I use usrp2_fft.py for instance with UHD- or do I need to edit the .py files to change the flowgraph for UHD? Sorry if this has been answered somewhere already. -Brett

[Discuss-gnuradio] external ref

2010-11-09 Thread Brett L. Trotter
Does any alteration to code or firmware need to be made in order to get a USRP2 to lock to an external 10MHz reference? ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio

Re: [Discuss-gnuradio] external ref

2010-11-09 Thread Brett L. Trotter
Clarification to last- I see it can be done in Python with UHD, but without, do I need to put clocks_mimo_config(*MC_WE_LOCK_TO_SMA*); in clocks.c- perhaps in place of WC_WE_DONT_LOCK on like 52 or is there a way to do it in python for non UHD? On 11/09/2010 11:44 PM, Brett L. Trotter wrote

Re: [Discuss-gnuradio] external ref

2010-11-12 Thread Brett L. Trotter
On 11/09/2010 11:44 PM, Brett L. Trotter wrote: > Does any alteration to code or firmware need to be made in order to get > a USRP2 to lock to an external 10MHz reference? > > I'm still looking for more information on this subject, and have some additional information to add. W

[Discuss-gnuradio] USRP2 UHD bug?

2010-11-15 Thread Brett L. Trotter
I've got a laptop here (Acer Aspire 7552G) with 1GB ethernet with the latest git development copy of gnuradio and UHD, with a USRP2. On this particular laptop, when I try to transmit anything substantial, the USRP2 stops transmitting and quits responding, meanwhile the host keeps sending udp datag

[Discuss-gnuradio] gnuradio-examples/python/digital/tunnel.py issue

2010-11-19 Thread Brett L. Trotter
I seem to be having trouble with gnuradio-examples/python/digital/tunnel.py on a fedora 13 box complaining with an eng_notation error about any value I put in (eg 10M, 10e6, 1000) for --rx-freq or --tx-freq where the same exact script (md5 matches) on an ubuntu box works fine. This is the lates

[Discuss-gnuradio] Not getting Makefile after bootstrap configure?

2010-11-27 Thread Brett L. Trotter
On an up to date fedora 13 x86_64 I just did this: 624 git clone http://gnuradio.org/git/gnuradio.git 625 cd gnuradio 626 git branch --track next origin/next 627 git checkout next 628 ./bootstrap 629 ./configure --enable-docs --enable-grc --enable-gnuradio-examples --enable-gr-ut

Re: [Discuss-gnuradio] Not getting Makefile after bootstrap configure?

2010-11-27 Thread Brett L. Trotter
On 11/27/2010 11:55 PM, Eric Blossom wrote: > On Sat, Nov 27, 2010 at 11:16:24PM -0600, Brett L. Trotter wrote: > >> On an up to date fedora 13 x86_64 >> >> I just did this: >> 624 git clone http://gnuradio.org/git/gnuradio.git >> 625 cd gnuradio >

[Discuss-gnuradio] Re: Bug in gr_scrambler?

2010-12-09 Thread Brett L. Trotter
Following up to my last- it seems I've generally misunderstood the valve block. (also, my code example was off the top of my head and incorrect). Please disregard the other post on this thread. Thanks. -Brett On 12/08/2010 12:55 PM, Brett L. Trotter wrote: > I observed today with a co

[Discuss-gnuradio] Location of USRP1 and USRP2 non UHD FPGA Verilog sources

2010-12-09 Thread Brett L. Trotter
The current git tree doesn't seem to have the USRP1 or USRP2 firmware for a non UHD setup. The Wiki seems to indicate it should be in gnuradio/usrp/fpga, but the only directory I see there is 'rbf'. Has it moved to a separate tree, and where might I find it? Thanks in advance! -Brett __

[Discuss-gnuradio] Bug in gr_scrambler?

2010-12-09 Thread Brett L. Trotter
I observed today with a controlled test using valve blocks that the scrambler block continues to output data even when no input data should be coming in. I then looked at the source: int gr_scrambler_bb::work(int noutput_items, gr_vector_const_void_star &input_items,

[Discuss-gnuradio] Missing files in USRP1 FPGA?

2010-12-13 Thread Brett L. Trotter
`include "../../firmware/include/fpga_regs_common.v" `include "../../firmware/include/fpga_regs_standard.v" these seem to be absent from the repo obtained here: git clone git://git.ettus.com/ettus/fpga.git Where can I find those files? ___ Discuss-gnu

Re: [Discuss-gnuradio] Missing files in USRP1 FPGA?

2010-12-13 Thread Brett L. Trotter
Looks like these files were not moved from gnuradio/usrp. A symlink in fpga/usrp1 to ../../gnuradio/usrp/firmware seems to do the trick, but it would be nice if one of the repos had everything necessary. On 12/13/2010 12:49 PM, Brett L. Trotter wrote: > `include "../../firmware

[Discuss-gnuradio] UHD: get_center_freq ?

2011-02-02 Thread Brett L. Trotter
gr-usrp has set_tx_freq and tx_freq uhd has set_center_freq but no get_center_freq or center_freq- I'm trying to port some USRP1 python code to UHD and there doesn't seem to be a clear analog. Have I overlooked something? Thanks for any input/help! -Brett

Re: [Discuss-gnuradio] UHD: get_center_freq ?

2011-02-07 Thread Brett L. Trotter
Sorry for the delay- I sent this 02/02/11 from an email that's not subscribed. On 02/02/2011 04:48 PM, Josh Blum wrote: > > On 02/02/2011 12:48 PM, Brett L. Trotter wrote: >> gr-usrp has set_tx_freq and tx_freq >> >> uhd has set_center_freq but no get_ce

[Discuss-gnuradio] timestamp recorded stream

2011-02-15 Thread Brett L. Trotter
I'd like to record raw broadcast (rx_cfile) with either a USRP1 or USRP2 (have both) but with all samples known to as accurate as the system clock, preferably millisecond to sub-millisecond accuracy. I considered writing a block that outputs the number of milliseconds since midnight as shorts that

[Discuss-gnuradio] DB EEPROM location 0x20

2011-02-20 Thread Brett L. Trotter
The card I'm looking at (an LFRX variant) has the proper checksum in 0x1F (0x17), but then byte 0x20 has 0x04 with the remaining data 0xFF I previously thought I understood 0x20 began the region where we could do what we wanted, but I'm now not so sure. If I was going to store some custom data, wh

[Discuss-gnuradio] book/video (MIT courseware, whatever) recommendations?

2011-02-22 Thread Brett L. Trotter
Is there one or two books that give a pretty comprehensive, yet low base communications/DSP knowledge requirement that would be a guided walkthrough of waves and fields, various forms of modulation, carriers, filters, sidebands, etc? I'm really looking for something that's either not a textbook, or

[Discuss-gnuradio] daughterboard PCB/PADS files?

2011-02-22 Thread Brett L. Trotter
I see that http://code.ettus.com/redmine/ettus/projects/public/documents has the PDFs, but are the PCB/PADS files still around for any of these boards? If the answer is no, then is "open source hardware" becoming "open, but we don't want to make it too easy since we make money on these". If yes, th

[Discuss-gnuradio] usb errors while stopping flowgraph

2011-02-25 Thread Brett L. Trotter
I'm sure this has been asked many times, but if you would be so kind as to offer any hints where to look for solutions or what to test, it would be much appreciated. I've got several different flowgraphs here that upon shutting down some portion of the time, they emit a series of errors and then t

[Discuss-gnuradio] usrp.source_c python object to usrp_open_cmd_interface on selected subdev?

2011-03-25 Thread Brett L. Trotter
I desperately need to know how to get from a usrp.source_c python object down to what would be the result of going through usrp_prims.usrp_open_cmd_interface? Can anyone help? Thanks! ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lis

[Discuss-gnuradio] PyQwt5 and RHEL-6

2011-04-01 Thread Brett L. Trotter
Who do we petition to get PyQwt5 included in RHEL-6? It compiles straightforwardly from Fedora 15 SRPM, so it shouldn't be a problem. This new build requirement means one can't build GnuRadio with stock RPMs even on RHEL 6 now otherwise. ___ Discuss-gnur

[Discuss-gnuradio] UHD memory leak?

2011-04-01 Thread Brett L. Trotter
swig/python detected a memory leak of type 'uhd::usrp::multi_usrp::sptr *', no destructor found. Anyone seen this before? ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio

[Discuss-gnuradio] Motorola IIi Hybrid Trunk decoding

2011-04-05 Thread Brett L. Trotter
Has anyone written a motorola trunk decoder for gnuradio? I'd like to be able to dump all active audio in a trunk to separate streams by talkgroup. I'd love to know about any trunk decoders in general. Thanks! -Brett ___ Discuss-gnuradio mailing list

[Discuss-gnuradio] help using gri_glfsr from an external app

2011-05-03 Thread Brett L. Trotter
I have an application I've been compiling fine against gnuradio for several years, including recent ubuntu and RHEL-6, until I tried it on FC14. For some reason, on FC14, it seems like gri_glfsr is improperly/inadequately defined or not linked properly. Long story short, after the #include , I can

Re: [Discuss-gnuradio] help using gri_glfsr from an external app

2011-05-03 Thread Brett L. Trotter
glfsr:: part needed to go. It now compiles fine. On 05/03/2011 04:49 AM, Brett L. Trotter wrote: > I have an application I've been compiling fine against gnuradio for > several years, including recent ubuntu and RHEL-6, until I tried it on > FC14. For some reason, on FC14, it seem

[Discuss-gnuradio] USRP2 set_gpio_ddr

2011-05-10 Thread Brett L. Trotter
I did a bench experiment here and observed that set_gpio_ddr is required on a tx card but not an rx card. Is this intended? Here is iotest.py (Python 2.5 required for ternary I used) #!/usr/bin/env python I2C_DEV_EEPROM = 0x50# 24LC02[45]: 7-bits 1010xxx I2C_ADDR_BOOT = (I2C_DEV_EE

[Discuss-gnuradio] grc/blocks/blks2_variable_sink_x.xml gone in the last few weeks

2011-05-14 Thread Brett L. Trotter
Why/when was variable sink removed? It seems to have been in the last few weeks. It's still used in gnuradio-examples/grc/simple/var_sink_taps.grc among a bunch of places in our own code. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http

[Discuss-gnuradio] writing a c++ block that can access other blocks

2011-05-22 Thread Brett L. Trotter
I'm looking for a way to create a block that can find the USRP source and/or sync in the flowgraph and be able to get to the dboard iface for doing write_aux_dac and write_io. Bottom line I'd like to write an AGC block that can manipulate a custom card. Is there a facility for finding other block i

Re: [Discuss-gnuradio] writing a c++ block that can access other blocks

2011-05-22 Thread Brett L. Trotter
for blocks that aren't really part of the flowgraph in terms of moving data, but just provide an instance of some sort of control? Thanks! On 05/22/2011 04:09 PM, Brett L. Trotter wrote: > I'm looking for a way to create a block that can find the USRP source > and/or sync in the flo

[Discuss-gnuradio] Non SDHC Card Availability for USRP2s

2011-05-23 Thread Brett L. Trotter
I discovered today that almost no big retailer (newegg, bestbuy, etc) except amazon appears to sell 1 GB SD cards any more and 2GB cards are probably going to be headed that way sooner or later. 2GB cards, while also overkill on the USRPs, are riskier to buy since some may be SDHC. What's the long

[Discuss-gnuradio] USRP1 problem, UHD problem, and one suggestion

2011-05-26 Thread Brett L. Trotter
USRP1: - When we have a very simple flowgraph with a USRP1 sink connected to a signal source and a USRP1 source connected to a WX scope- trying to shut down the app using the close box causes the USB on the host system to freeze up requiring a reboot. Yanking USRP power or ctrl+c'ing avoids this pr

Re: [Discuss-gnuradio] USRP1 problem, UHD problem, and one suggestion

2011-05-26 Thread Brett L. Trotter
unt decimation will yield a very delayed signal on the scope sink. The same problem does not happen on USRP1 when the sinks are swapped out and the sample rates adjusted appropriately. On 05/26/2011 07:29 PM, Brett L. Trotter wrote: > USRP1: > - When we have a very simple flowgraph with a USR

Re: [Discuss-gnuradio] USRP1 problem, UHD problem, and one suggestion

2011-05-26 Thread Brett L. Trotter
On 05/26/2011 08:06 PM, Nick Foster wrote: > On Thu, 2011-05-26 at 19:29 -0500, Brett L. Trotter wrote: >> USRP1: >> - When we have a very simple flowgraph with a USRP1 sink connected to a >> signal source and a USRP1 source connected to a WX scope- trying to shut >> d

Re: [Discuss-gnuradio] USRP1 problem, UHD problem, and one suggestion

2011-05-27 Thread Brett L. Trotter
On 05/26/2011 09:14 PM, Brett L. Trotter wrote: > On 05/26/2011 08:06 PM, Nick Foster wrote: >> On Thu, 2011-05-26 at 19:29 -0500, Brett L. Trotter wrote: >>> USRP1: >>> - When we have a very simple flowgraph with a USRP1 sink connected to a >>> signal source

[Discuss-gnuradio] libusb-0.1 versus libusb-1.0

2011-05-27 Thread Brett L. Trotter
So after discovering that while I had libusb-devel-0.1 and libusb1-devel-1.0.3 installed on my RHEL-6 machine here (and ubuntu), gnuradio compiled against 0.1 despite 0.1 being "ancient and unsupported". I then removed libusb-devel and gnuradio fails to configure. [root@aurora gnuradio]# ls -lad

Re: [Discuss-gnuradio] fusb: (rd status -2) No such file or directory

2011-05-27 Thread Brett L. Trotter
This is precisely the problem I'm seeing that kills my USB. I have to ctrl+c to keep that from happening. On 05/27/2011 12:05 PM, Johannes Schmitz wrote: > I made a simple example to show how it happens. > It is a problem of lock/unlock in combination with usrp. > > Like this the lock unlock disco

[Discuss-gnuradio] Complex / Quadrature sampling

2011-05-28 Thread Brett L. Trotter
With UHD, what's the proper way to use the A and B connectors on an LFRX to get quadrature sampling? I've tried setting subdev spec as A:AB but it doesn't seem to work with the UHD source at anything other than 0 for the frequency for both USRP1 and USRP2 via UHD. _

[Discuss-gnuradio] libusb1 not the solution to USRP crashing

2011-05-28 Thread Brett L. Trotter
I just discovered the not well published --with-fusb-tech=libusb1 option to configure, hoping to resolve the USRP1 non-uhd crashing issues myself and one other person are seeing when the flowgraphs do a lock or stop. Unfortunately, I still see the same lockup, which rules out any libusb-0.1 possibi

[Discuss-gnuradio] super minor UHD Subdev "bug"/feature request

2011-05-31 Thread Brett L. Trotter
I have a UHD app I'd like to work with USRP1 and 2- but when I give USRP2: self.dut_out.set_subdev_spec("A:A A:B", 0) it complains about the A's and I have to specify ":A :B" instead, but for USRP1 it needs the A. It would be a nice simplification if the USRP2 allowed A:whatever since it techn

[Discuss-gnuradio] Are there any Gnuradio Events?

2011-06-01 Thread Brett L. Trotter
Lets say you have a GUI app that has a fixed runtime determined by a head block set to (sample_rate * n_seconds). Currently, the gui keeps running. Is there an OnShutdown or some function I can override to catch the flowgraph completion? Worst case, can I set up a loop thread to check tb.is_running

[Discuss-gnuradio] throttle for very low data rates

2011-07-02 Thread Brett L. Trotter
I have a loop block that I wanted to run very slow (1Hz), and put a throttle block set to rate 1. Unfortunately, it seems to tear through the first 8-9k samples in a blink before it slows down. Is there an alternative implementation of the throttle block that would work at very slow speeds? Perhaps

[Discuss-gnuradio] UHD quadrature sampling help

2011-07-09 Thread Brett L. Trotter
We have a number of old flowgraphs that take advantage of quadrature sampling and work fine in USRP1 non-uhd, but once converted to UHD (for USRP1 and 2), we've been wholly unable to come up with subdev specs that work- the I and Q are not synchronized in any way and any change in frequency changes

[Discuss-gnuradio] UHD changes and reconfiguration

2011-08-09 Thread Brett L. Trotter
We have a flowgraph that does a full stop, some disconnects and a restart during its execution. Before the latest UHD version bump, this worked fine, but now it goes silent after the upgrade without any apparent failures. Is dynamic reconfiguration now broken- either on purpose or accidentally? Has

[Discuss-gnuradio] sine output between packets

2011-09-25 Thread Brett L. Trotter
It seems my old patch that zeroed out the output of the USRP didn't make it into UHD- we're seeing a constant sine output between packets- and in our case this messes with the receiver unless we use some custom TX cards that have an amp we can shut down with ATR. Is there any way to fix this? ___

[Discuss-gnuradio] N210 non-uhd?

2011-10-07 Thread Brett L. Trotter
Can I burn the USRP2 non-UHD firmware on an N210? ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio

[Discuss-gnuradio] block question

2008-11-22 Thread Brett L. Trotter
two interrelated questions here: 1) in a block with minimum output streams = 1 and maximum = 1, do I need to know if the output stream is not connected and not try to fill the output buffer at all (or will outputitems be 0?) and 2) if yes, how do I get a count of the number of connected streams?

[Discuss-gnuradio] block question (correction)

2008-11-22 Thread Brett L. Trotter
Brett L. Trotter wrote: > two interrelated questions here: > 1) in a block with minimum output streams = 1 and maximum = 1, do I need > to know if the output stream is not connected and not try to fill the > output buffer at all (or will outputitems be 0?) > and 2) if yes, how do I

[Discuss-gnuradio] Netgear GA311 (Realtek 8169) and USRP 2

2008-12-08 Thread Brett L. Trotter
The purpose of this email is to ask if anyone (out of the relatively few USRP2 users) had happened to bump into this card and had similar difficulty as well as to determine if this is repeatable on other systems and thus warn others away from the headache I've encountered. I've been successful wit

[Discuss-gnuradio] block destructors

2009-01-27 Thread Brett L. Trotter
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 destr

[Discuss-gnuradio] problems with a block

2009-02-26 Thread Brett L. Trotter
I've got a block that I needed to make a gr_io_signature4 for- unless I've misunderstood something: gr_io_signature_sptr gr_make_io_signature4(int min_streams, int max_streams, int sizeof_stream_item1, int sizeof_stream_item2, int s

[Discuss-gnuradio] site down?

2009-03-03 Thread Brett L. Trotter
Subversion and www seem to be misbehaving. Is it just me/my connection? Is there an ETA on revival? ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio

[Discuss-gnuradio] problem in configure with trunk 10632

2009-03-17 Thread Brett L. Trotter
checking for xdg-mime... true checking for Python >= 2.5... yes checking for Python Cheetah templates >= 2.0.0... yes checking for Python lxml wrappers >= 2.0.0... yes checking for Python gtk wrappers >= 2.10.0... ^C^C^C^C^C^C^C^C^C^C^C can't control C either.. this has happened on an ubuntu i

Re: [Discuss-gnuradio] problem in configure with trunk 10632

2009-03-17 Thread Brett L. Trotter
ython --version Python 2.5.2 [r...@evo2 gnuradio]# python -c "import gtk" same freeze > > Brett L. Trotter wrote: >> checking for xdg-mime... true >> checking for Python >= 2.5... yes >> checking for Python Cheetah templates >= 2.0.0... yes >> checking f

Re: [Discuss-gnuradio] problem in configure with trunk 10632

2009-03-17 Thread Brett L. Trotter
the same. top doesn't show anything eating up CPU, at all. Josh Blum wrote: > Thats really bad! > > howabout > > python -c "import pygtk; pygtk.require('2.0'); import gtk" > > Brett L. Trotter wrote: >> Josh Blum wrote: >>> what does

Re: [Discuss-gnuradio] problem in configure with trunk 10632

2009-03-17 Thread Brett L. Trotter
Usually for stuff like compiling and it has worked in the past (even a few days ago). You're correct, when I come on with VNC or console, it works fine. Any idea what broke? Johnathan Corgan wrote: > On Tue, Mar 17, 2009 at 4:16 PM, Brett L. Trotter > wrote: > > >> to

[Discuss-gnuradio] scientific computing repository update

2009-11-11 Thread Brett L. Trotter
I hate to be partly off topic, but I wanted to give an update on the repository I shared a few days ago. I created the repository because I've been using RHEL/CentOS for GNURadio and Octave a long time and wanted to help others do so since it can be a chore on the slower distributions. Although I'

[Discuss-gnuradio] USRP+Digital Radio Mundial

2006-04-20 Thread Brett L Trotter
Has anyone begun/completed work on a Digital Radio Mundial block for gnu-radio/USRP? I'm interested in receiving these signals, but no such module seems to exist currently. If not, what would it take to reference the libraries from drm.sourceforge.net from within python in order to decode these s

[Discuss-gnuradio] Digital Radio Mundial

2006-04-27 Thread Brett L Trotter
I've been tearing apart and fixing up the DReaM sources in order to reduce it to its core. I've made patches to allow use of FFTW3 instead of FFTW2 and to fix the problems compiling without the QT GUI interface. So I'm at the point where I know how to instantiate a DRM Receiver object and am close

Re: [Discuss-gnuradio] Digital Radio Mundial

2006-04-27 Thread Brett L Trotter
Eric Blossom wrote: > On Thu, Apr 27, 2006 at 06:12:58AM -0500, Brett L Trotter wrote: > >>I've been tearing apart and fixing up the DReaM sources in order to >>reduce it to its core. I've made patches to allow use of FFTW3 instead >>of FFTW2 and to fix the pro

[Discuss-gnuradio] LFRX problems

2006-05-04 Thread Brett L Trotter
I've been attempting to get my LFRX daughterboard working on a USRP board. Most of the gnuradio-examples I've tried don't work on the LFRX (they worked on basic rx). For instance, some of them come up and the graph displays are not moving until I drop the gain to 0-3. Some lock up and are not adjus

Re: [Discuss-gnuradio] GNURadio OFDM receiver design

2006-05-06 Thread Brett L Trotter
I've been working in a similar vein, but like you, I lack the GNURadio specific knowledge. I seek a DRM (Digital Radio Mundial) implementation and have some serious time pressure to come up with one. I've reduced worked on the DRM (drm.sourceforge.net) code to get it to compile properly without a

[Discuss-gnuradio] LFRX board gain problems in usrp_oscope?

2006-05-06 Thread Brett L Trotter
When I try and use usrp_oscope.py on my USRP board with an LFRX board, setting gain at 4 or above results in a non-updating display. Setting below 3 works OK- though still have not been able to find an appropriate antenna and/or high impedance buffer amp and have not yet listened to AM radio sucess

[Discuss-gnuradio] Dream(DRM)+GNURadio

2006-05-07 Thread Brett L Trotter
It's a funny thing, pretty much no one that posts on the drm.sourceforge.net forums has any clue about the USRP boards. As you know, there is some talk of DRM code development occurring in the next few weeks- I am very much looking forward to this, and if I can offer any assistance (possibly not),

[Discuss-gnuradio] WinDRM

2006-05-07 Thread Brett L Trotter
Apparently, a forked version of DRM using lower bandwidth codecs has been developed- originally called Hamdream by HB9TLK and was GUI-fied by N1SU and called WinDream. This particular version uses different codecs and supports two-way mode. It seems like this version would be more directly aimed a

[Discuss-gnuradio] Chuck Swiger's sweeper

2006-05-09 Thread Brett L Trotter
On this page: http://www.nabble.com/Automatic-testing---sweep-generator-t232617.html#a650444 was a link to his sweeper, which seems to be defunct. Does anyone have a copy hosted somewhere? ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org htt

Re: [Discuss-gnuradio] Chuck Swiger's sweeper

2006-05-09 Thread Brett L Trotter
Thank you very much for your response and your original contribution! Charles Swiger wrote: > On Tue, 2006-05-09 at 16:15 -0500, Brett L Trotter wrote: >> On this page: >> http://www.nabble.com/Automatic-testing---sweep-generator-t232617.html#a650444 >> >> was a link

Re: [Discuss-gnuradio] Problem with making sound card as source

2006-05-10 Thread Brett L Trotter
I had a similar problem- turned out not to be the hardware. Run alsamixer and make sure to turn on capture on your line input (with spacebar) and turn up the volume all the way, then turn on capture on capture and turn the volume up all the way again. You should then be getting audio and adjust the

[Discuss-gnuradio] Dream (for Digital Radio Mondial) transmit FIFOs

2006-05-10 Thread Brett L Trotter
Some very generous folks on this list have pointed me towards how to do a DRM receiver with the USRP and Dream via FIFO's and a nifty little piece of python code. Unfortunately, I live smack dab in the middle of the US with nothing but a random wire antenna. The Dream code lacks the ability to writ

[Discuss-gnuradio] DRM/DAB

2006-05-26 Thread Brett L Trotter
A while ago, some guys were discussing progress on gnuradio libraries for DAB and/or DRM. Has anyone made progress? Just curious- I have a project that really could use this sort of support! Also- anybody had any experience using gnuradio on a BlackFin device? ___

[Discuss-gnuradio] DAB

2006-05-27 Thread Brett L Trotter
I recall a discussion from a few weeks ago where Jens mentioned having done some DAB receiving. I had been looking at Digital Radio Mondial, but am now exploring other avenues like DAB. I was wondering what progress has been made in receiving DAB and/or DRM broadcasts? _

[Discuss-gnuradio] GNURadio + Dream

2006-05-30 Thread Brett L Trotter
OK- I've finagled the Dream code into giving me a file output from transmitting and can even go into a FIFO and back into Dream receive- the only problem is the dream decoder doesn't seem to lock on to a signal. I have the code to receive off of the USRP into a FIFO (complements of Mateo Campanell

Re: [Discuss-gnuradio] GNURadio + Dream

2006-05-30 Thread Brett L Trotter
. Brett L Trotter wrote: > OK- I've finagled the Dream code into giving me a file output from > transmitting and can even go into a FIFO and back into Dream receive- > the only problem is the dream decoder doesn't seem to lock on to a signal. > > I have the code to receive of

[Discuss-gnuradio] DRM Transmit

2006-06-07 Thread Brett L Trotter
I've got a properly encoded wav file (48khz, 16bit) that I need to transmit over the USRP- does anyone have a file sink type python script that should work for Digital Radio Mondial given the wav file? ___ Discuss-gnuradio mailing list Discuss-gnurad

[Discuss-gnuradio] gmsk2 (new tunnel.py)

2006-06-22 Thread Brett L Trotter
I've got two machines with one usrp each using basic tx/rx board pairs. As soon as I start tunnel.py on each and set the ip's, one machine (usually the one started second) starts showing B. If i disconnect wires, both sides go silent, reconnect and one or both start showing BB

Re: [Discuss-gnuradio] gmsk2 (new tunnel.py)

2006-06-22 Thread Brett L Trotter
Eric Blossom wrote: > On Thu, Jun 22, 2006 at 03:32:10PM -0500, Brett L Trotter wrote: >> I've got two machines with one usrp each using basic tx/rx board pairs. >> >> As soon as I start tunnel.py on each and set the ip's, one machine >> (usually t

[Discuss-gnuradio] gmsk

2006-06-22 Thread Brett L Trotter
Paying more attention to your message this time, our intent is to use the LFTX/RX boards.. Is there any way to make it work with those as that is our target frequency range? ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.o

Re: [Discuss-gnuradio] gmsk in light of fpga modifications

2007-01-18 Thread Brett L. Trotter
Daniel O'Connor wrote: > On Thursday 18 January 2007 21:31, Brett Trotter wrote: > >> I realize ssh probably isn't the best thing to test with, but it happens to >> be a quick and easy way to test file sending. The question is, is our >> tunnel acknowledging corrupted packets instead of asking f

Re: [Discuss-gnuradio] 8b/10b for GMSK

2007-02-05 Thread Brett L. Trotter
Johnathan Corgan wrote: > Johnathan Corgan wrote: > >> There is an alternative that Eric and I have conceived that would be >> a temporary workaround. It would not solve the original problem but >> would at least allow upper level protocols that do re-transmission to >> recover from the failure.

Re: [Discuss-gnuradio] 8b/10b for GMSK

2007-02-05 Thread Brett L. Trotter
Johnathan Corgan wrote: > Brett L. Trotter wrote: > > >> Yay- congratulations- transferred 100MB successfully and all of my >> 'stumbler' packets- even with UDP. >> > > You're using FSP (which goes over UDP), correct? FSP has a retry >

[Discuss-gnuradio] OFDM status

2007-03-07 Thread Brett L. Trotter
What is the current status of the OFDM project? Is it such that I could give it a try using a tunnel.py type setup over a shared wireline - or at least over two separate RX/TX wires? Last I heard the receiver and transmitter were working but not over the air.

Re: [Discuss-gnuradio] regarding fft-ifft processing

2007-03-07 Thread Brett L. Trotter
Trond Danielsen wrote: > I read in an earlier thread that you want to do the (I)FFT processing > in the FPGA. This is not how it is intended to be used. GNU Radio is a > software radio framework, and the goal is to move as much of the > signal processing as possible onto the host computer. Moving

[Discuss-gnuradio] multi-machine sweeper

2007-03-26 Thread Brett L. Trotter
In looking for particular frequencies which can successfully transmit across a particular medium or antenna, I've spent days running benchmark_tx on one side and benchmark_rx on the other (two separate machines). I've got an ethernet connection between the two machines, so it is a matter of sshi

Re: [Discuss-gnuradio] USRP and "fusb: (rd status -71) Protocol error"

2007-05-02 Thread Brett L. Trotter
Eric Blossom wrote: > On Thu, May 03, 2007 at 07:27:33AM +1000, stevie.glass wrote: > >> Hi >> >> I've a rev 3 USRP which has the Flex2400 and TVRX daughtercards installed. >> At one time the setup worked well - altho I've let it lie a while. This >> week I've swapped out a TVRX and replaced it

[Discuss-gnuradio] DQPSK/GMSK receive strengths

2007-05-11 Thread Brett L. Trotter
Is there a way to know or log (in the verbose logging) the maximum received strength of a packet- or running max perhaps over a period of a few seconds? I'm trying to measure it with a scope and coming up short- I think I have some faulty hardware in the loop here, but that's what I'm trying to dia

[Discuss-gnuradio] updating trac?

2007-05-13 Thread Brett L. Trotter
The gnuradio build guide for fedora should be updated since the latest trunk requires guile-devel to be installed as well. Is there a way for average joes to update the trac wiki? ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists

[Discuss-gnuradio] r/s encoding and padding on gmsk

2007-05-18 Thread Brett L. Trotter
I'm involved with very lossy links and low signal strengths using gmsk and dqpsk and would like to add a layer of reed-solomon encoding in place of the current CRC check. My plan was to use reed solomon in a standard (255,223) configuration and use PKSC#7 padding in 223 byte blocks where the last N

[Discuss-gnuradio] learning about SDR

2007-05-18 Thread Brett L. Trotter
I've been learning about software defined radio from the ground up and my maths are a bit shaky and I'm mainly a software guy, so concepts of signals and whatnot are rather foreign to me. So as I've been reading, I've taken lots of tangents to review what must seem like completely elementary concep

[Discuss-gnuradio] r/s encoding

2007-05-19 Thread Brett L. Trotter
I'd really like to work on the reed-solomon encoding over the weekend here and unfortunately I can't do so without more information. If anyone can tell me whether the padding mechanism proposed in my recent email might work- or how to make it take into account the bits/sample and samples/symbol, I'

[Discuss-gnuradio] swig question

2007-05-24 Thread Brett L. Trotter
I've made a swig wrapper for some code that needs a char pointer passed in, how do I do such a thing? ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio

Re: [Discuss-gnuradio] swig question

2007-05-24 Thread Brett L. Trotter
Brett L. Trotter wrote: > I've made a swig wrapper for some code that needs a char pointer passed > in, how do I do such a thing? > > > Thinking about this more, maybe I need to give more information. I've wrapped Phil Karn's FEC library and I'm t

[Discuss-gnuradio] lost bytes and reed-solomon

2007-05-25 Thread Brett L. Trotter
I'm working on a self-educational project to replace the simple CRC in the tunnel apparatus with a very heavy reed-solomon encoding for very lossy and low-bandwidth links. One thought just occurred to me. Originally, I was going to group up all of my data in 127 byte blocks, r/s encode it with a 25

Re: [Discuss-gnuradio] lost bytes and reed-solomon

2007-05-25 Thread Brett L. Trotter
Brett L. Trotter wrote: > I'm working on a self-educational project to replace the simple CRC in > the tunnel apparatus with a very heavy reed-solomon encoding for very > lossy and low-bandwidth links. One thought just occurred to me. > Originally, I was going to group up all

Re: [Discuss-gnuradio] lost bytes and reed-solomon

2007-05-25 Thread Brett L. Trotter
Got a few good replies on my question about lost bytes. I appreciate the input, that sounds like it'll work great in conjunction with the error correction then. I'm hoping to have that in place within the next couple of hours and start testing. ___ Disc

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