Re: [Discuss-gnuradio] Data Capture Problems
Michael Dickens wrote: Ed - Please try the latest SVN trunk or both GNU Radio and GRC, then report back to the list. This might be due to some bugs I fixes in the some GNU Radio OSX code recently. Or it might not ... but trying the latest SVN trunk is always wise with an issue like this. - MLD With a lot of patience and help from Mike I was able to straighten out my OSX build environment so the latest SVN trunk would build. For some strange reason, even though I had GNU libtool 1.5 installed and named glibtool (and glibtoolize) the ./bootstrap script wasn't happy until I used MacPorts to install it. Then the ./bootstrap and the rest of the build worked. And the best news is that it fixed the data capture problem. I made several runs at 320 ksamples/sec for 12 min (a 1GB file!) without a problem. @(^.^)@ Ed ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] asymmetric USRP throughput
On Thu, Sep 13, 2007 at 02:03:55AM +0200, Vincenzo Pellegrini wrote: > AMD sempron 3000+, 512KiB RAM > USB2.0 on board > 00:03.0 USB Controller: Silicon Integrated Systems [SiS] USB 1.0 > Controller (rev 0f) > 00:03.1 USB Controller: Silicon Integrated Systems [SiS] USB 1.0 > Controller (rev 0f) > 00:03.2 USB Controller: Silicon Integrated Systems [SiS] USB 1.0 > Controller (rev 0f) > 00:03.3 USB Controller: Silicon Integrated Systems [SiS] USB 2.0 > Controller Vincenzo, I'm not familiar with this chipset. It's not inconceivable that it's got asymmetric throughput. We've seen that on many PPC host controllers. Eric > On Wed, 2007-09-12 at 16:35 -0700, Eric Blossom wrote: > > On Wed, Sep 12, 2007 at 11:55:08PM +0200, Vincenzo Pellegrini wrote: > > > I'm beginning to see some light over my 8MHz tx problems.. > > > > > > the throughput towards my USRP is significantly reduced compared to the > > > one from it... > > > > > > ./test_usrp_standard_tx > > > xfered 1.34e+08 bytes in 5.46 seconds. 2.457e+07 bytes/sec. cpu time = > > > 0.492 > > > 0 underruns > > > > > > > > > ./test_usrp_standard_rx > > > xfered 1.34e+08 bytes in 4.19 seconds. 3.2e+07 bytes/sec. cpu time = > > > 0.384 > > > noverruns = 0 > > > > > > what could be the cause for this? any hint..? ( benchmark_usb.py reports > > > a good throughput up to 32M) > > > > > > thanks > > > vincenzo > > > > What h/w platform are you on?' > > What USB host controller do you have? > > Is it on a PCI card, or on the motherboard? > > > > $ lspci > > Eric ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] asymmetric USRP throughput
On Wed, Sep 12, 2007 at 11:55:08PM +0200, Vincenzo Pellegrini wrote: > I'm beginning to see some light over my 8MHz tx problems.. > > the throughput towards my USRP is significantly reduced compared to the > one from it... > > > ./test_usrp_standard_tx > xfered 1.34e+08 bytes in 5.46 seconds. 2.457e+07 bytes/sec. cpu time = > 0.492 > 0 underruns > > > ./test_usrp_standard_rx > xfered 1.34e+08 bytes in 4.19 seconds. 3.2e+07 bytes/sec. cpu time = 0.384 > noverruns = 0 > > > what could be the cause for this? any hint..? ( benchmark_usb.py reports a > good throughput up to 32M) > > thanks > vincenzo What h/w platform are you on?' What USB host controller do you have? Is it on a PCI card, or on the motherboard? $ lspci Eric ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] recording data from 2 USRP daughterboards simultaneously with one USRP mother board
On Wed, Sep 12, 2007 at 01:51:01PM +0900, melanio wrote: > Hi everyone, > > I am trying to record I/Q data from two daughter-boards(TVRX,RFX400) on one > USRP mother board simultaneously. > > It is no problems in recording data from either of these daughter-boards > independently, but I don't know it is available to record data > simultaneously? > > Thanks, > S.W Kim. > In the svn trunk: gnuradio-examples/python/multi-antenna/*.py These example are close to what you are trying to do. Eric ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] asymmetric USRP throughput
I'm beginning to see some light over my 8MHz tx problems.. the throughput towards my USRP is significantly reduced compared to the one from it... ./test_usrp_standard_tx xfered 1.34e+08 bytes in 5.46 seconds. 2.457e+07 bytes/sec. cpu time = 0.492 0 underruns ./test_usrp_standard_rx xfered 1.34e+08 bytes in 4.19 seconds. 3.2e+07 bytes/sec. cpu time = 0.384 noverruns = 0 what could be the cause for this? any hint..? ( benchmark_usb.py reports a good throughput up to 32M) thanks vincenzo ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] Flex2400 AGC
Hi! The AGC that is theoretically available at the analog devices chip on the Flex2400 boards, is it turned on? Or is it even wired? The datasheet says that there outputs and inputs, a simple rms detector and the agc input. And if these are connected, you have an AGC. Are they connected at sold boards? It's not because I want to have it turned on, but just to know. Greetings Dominik ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Information FPGA
On 9/12/07, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: > Hi, > I am a student and I carry out a degree thesis about SDR in particular FPGA. I > have seen some modules of FPGA but I haven't understood however these modules > are interconnected between them. > Could you give me any informations? If you check out the code from SVN and build any of the Quartus projects in the repository, it will spit out a graphical block view of how all the components are connected together. This is very helpful and allows you to investigate yourself. On the other hand, if you want to just see a down and dirty diagrams that other people have put together, try the wiki here: http://gnuradio.org/trac/wiki/UsrpFPGA Brian ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] Information FPGA
Hi, I am a student and I carry out a degree thesis about SDR in particular FPGA. I have seen some modules of FPGA but I haven't understood however these modules are interconnected between them. Could you give me any informations? Thank you very much. Calogero ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
