On Wed, Mar 14, 2012 at 10:55 AM, Stefan Ott <o...@iam.unibe.ch> wrote:
> On Wed, Mar 14, 2012 at 18:48, Nick Foster <n...@ettus.com> wrote: > > On Wed, Mar 14, 2012 at 10:42 AM, Stefan Ott <o...@iam.unibe.ch> wrote: > >> > >> Hey list > >> > >> I managed to build gnuradio 3.5.1 and (almost) got it working on the > >> USRP E110. However, when I try to run uhd_rx_cfile.py (with > >> --samp-rate 10e6 -f 97.7e6) it segfaults. You will find the log below. > > > > > > So there is essentially no chance the E110 can record to Flash at > 10Msps. It > > probably won't sustain flash writes at 500ksps. Try a lower sample rate, > or > > a small number of samples written to a tmpfs instead. > > > > That said, it shouldn't segfault, even at high sample rates. Does a lower > > rate work OK? > > I am actually writing to RAM so that shouldn't be the problem. And > yes, it also segfaults at lower sample rates (I tried multiple values > down to 1) and with a small number of samples (also tried just 1 > sample). > > It would seem that the very idea of reading from the device causes the > segfault. > What version of UHD are you using? What kernel driver? Have you updated anything else on the E110 image besides Gnuradio? Did it work for you before updating Gnuradio? -n > > cheers > -- > Stefan Ott > Communication and Distributed Systems > Institute of Computer Science and Applied Mathematics > University of Bern >
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