[Discuss-gnuradio] Osx devel
Hi, Who actually developp gnuradio for osx PPC and Intel systems?What about integrate PyObjc or py2app for gr-video-sdl on osx? Just a suggestion. Best, Cosmin _ Nouveau Windows 7 : Trouvez le PC qui vous convient. En savoir plus. http://clk.atdmt.com/FRM/go/181574580/direct/01/ ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] Assertion `dac_rate () == 128000000' failed.
Hi all, Could any of GnuRadio developers remove this assert? usrp_standard.cc:1024: virtual bool usrp_standard_tx::set_tx_freq(int, double): Assertion `dac_rate () == 12800' failed. It's no longer valid when you reclock your USRP and just makes it impossible to use libusrp in this case. I'm now trying to make GnuRadio usable with OpenBTS without patching of GnuRadio and this is show-stopper for me now. PS Whom should I contact with more re-clocking related fixes? To date no Python examples seem to work with re-clocked USRP without patching. I'm seeking for a way to make them working without too much changes. Probably USRP FPGA frequency can be set from environment variable? Is there any nicer way to do this? -- Regards, Alexander Chemeris. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Clear my fundamentals :)
Blue Boy wrote: Hello Everyone, My first post: I am a windows kernel programmer by profession.Recently my interest has grown for SDR gnuradio.I an new to this field so I have newbie doubts.I would welcome if you just point to some links for my answers. 1] What is usrp cfile format? complex/float but whats stored in numbers like amplitude/intensity/phase difference etc. Its a binary file containing 64-bit complex numbers where each 64 bit complex number is 2 32-bit floating point numbers corresponding to to the real and imaginary parts of a complex number. 2] Is frequency also stored in the cfile ? or we have to assume frequency from file name? How to reconstruct complete/sampled signal from Cfile ? You need to know the sampling rate and baseband frequency, the file is just raw data samples without any context. 3] Any scripts to read from cfile(Until USRP2 stocks are back :) ).I have tried several old scripts but they don't run in latest gnuradio ? Though i have made my own in GRC using file-source->throttle->graphical-fft-sink.But i doubt on it as i am newbie. That grc flowgraph would work fine. To be accurate, you have to set the samp_rate in the flowgraph and the baseband freq on the fft. 4] Can we write non graphical code also in GRC itself. See the options block->generate mode. 5] Can't we use c/c++ instead of python.Its problematic to match even indentations/tab/spaces.totally newbie to python. Of course, here is a c++ example code http://gnuradio.org/cgit/gnuradio.git/tree/gnuradio-examples/c++ Although, python development is going to be a lot easier. I set my editor to show whitespaces, never have a problem. _josh Thanks Everyone... ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] Clear my fundamentals :)
Hello Everyone, My first post: I am a windows kernel programmer by profession.Recently my interest has grown for SDR gnuradio.I an new to this field so I have newbie doubts.I would welcome if you just point to some links for my answers. 1] What is usrp cfile format? complex/float but whats stored in numbers like amplitude/intensity/phase difference etc. 2] Is frequency also stored in the cfile ? or we have to assume frequency from file name? How to reconstruct complete/sampled signal from Cfile ? 3] Any scripts to read from cfile(Until USRP2 stocks are back :) ).I have tried several old scripts but they don't run in latest gnuradio ? Though i have made my own in GRC using file-source->throttle->graphical-fft-sink.But i doubt on it as i am newbie. 4] Can we write non graphical code also in GRC itself. 5] Can't we use c/c++ instead of python.Its problematic to match even indentations/tab/spaces.totally newbie to python. Thanks Everyone... ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] ztex USB-FPGA board
On Sun, Nov 1, 2009 at 1:56 PM, Tim Newman wrote: > Luke Kenneth Casson Leighton wrote: >> >> http://shop.ztex.de/product_info.php?cPath=21&products_id=28 >> >> dear gnuradio developers, >> >> i was searching on opencores.org to see if there was a SoC that >> incorporates an FPGA(-like) device with an open core, and i >> accidentally encountered the above USB-FPGA board. it has a Cypress >> CY7C68013A/14A 480mb/s USB-2 Microcontroller and a Xilinx Spartan-3 >> XC3S400 FPGA. it is also accompanied by a developer board: >> >> http://www.ztex.de/usb-fpga-1/exp-1.1.e.html >> >> the price for the USB-FPGA is an incredibly-low $EUR 70, and the >> developer board is only $20. >> >> so my primary question is: is this USB-FPGA board (apart from the >> issue of connecting to A-D / D-A boards) suitable for use to do an >> 802.11b transceiver? is it fast enough? >> >> many thanks, >> >> l. >> >> >> ___ >> Discuss-gnuradio mailing list >> Discuss-gnuradio@gnu.org >> http://lists.gnu.org/mailman/listinfo/discuss-gnuradio >> > > This is a fairly loaded question, as it completely depends on WHERE you > implement certain portions of the 802.11b waveform. The primary bottleneck > is the USB bus, and you can't get 20 MHz of bandwidth over that bus. ah - eek! i wasn't anticipating it to be that much. i was expecting a much-reduced amount of data. > BBN > and whoever else worked on the current GNU radio 802.11b waveform solved > this by moving the despreading to the FPGA. This is just one example. ohh, ok - so it's doable - just rather technical :) thanks for responding, tim. l. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] ztex USB-FPGA board
Luke Kenneth Casson Leighton wrote: http://shop.ztex.de/product_info.php?cPath=21&products_id=28 dear gnuradio developers, i was searching on opencores.org to see if there was a SoC that incorporates an FPGA(-like) device with an open core, and i accidentally encountered the above USB-FPGA board. it has a Cypress CY7C68013A/14A 480mb/s USB-2 Microcontroller and a Xilinx Spartan-3 XC3S400 FPGA. it is also accompanied by a developer board: http://www.ztex.de/usb-fpga-1/exp-1.1.e.html the price for the USB-FPGA is an incredibly-low $EUR 70, and the developer board is only $20. so my primary question is: is this USB-FPGA board (apart from the issue of connecting to A-D / D-A boards) suitable for use to do an 802.11b transceiver? is it fast enough? many thanks, l. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio This is a fairly loaded question, as it completely depends on WHERE you implement certain portions of the 802.11b waveform. The primary bottleneck is the USB bus, and you can't get 20 MHz of bandwidth over that bus. BBN and whoever else worked on the current GNU radio 802.11b waveform solved this by moving the despreading to the FPGA. This is just one example. In the end, it completely depends on where you implement the latency and bandwidth sensitive components of the waveform. Tim ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] ztex USB-FPGA board
http://shop.ztex.de/product_info.php?cPath=21&products_id=28 dear gnuradio developers, i was searching on opencores.org to see if there was a SoC that incorporates an FPGA(-like) device with an open core, and i accidentally encountered the above USB-FPGA board. it has a Cypress CY7C68013A/14A 480mb/s USB-2 Microcontroller and a Xilinx Spartan-3 XC3S400 FPGA. it is also accompanied by a developer board: http://www.ztex.de/usb-fpga-1/exp-1.1.e.html the price for the USB-FPGA is an incredibly-low $EUR 70, and the developer board is only $20. so my primary question is: is this USB-FPGA board (apart from the issue of connecting to A-D / D-A boards) suitable for use to do an 802.11b transceiver? is it fast enough? many thanks, l. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
