Hi Adam, I'm going to plow on and get a dongle anyway. I'll plan to report back here in a couple of weeks. Thanks much for the link, which looks like a monster time-saver.
Charles On Thursday, December 4, 2014 9:36:12 PM UTC-5, Adam Caldwell wrote: > > I haven't had time to further troubleshoot this problem, sorry. > > The stick I'm using is some random stick I picked up cheap on amazon from > china. > > rtl_test identifies as: > Realtek, RTL2838UHIDIR, SN: 00000001 > Using device 0: Generic RTL2832U OEM > Found Rafael Micro R820T tuner > > lsusb identifies as: > ID 0bda:2838 Realtek Semiconductor Corp. RTL2838 DVB-T > > I did find a premade image for doing RTL-SDR stuff on the BBB here, which > sounds promising: > > > http://www.kd0cq.com/2014/08/packed-full-beaglebone-black-img-file-rtl-sdr-gnuradio-gqrx-lots-more-on-ubuntu-14-04/ > > > On Thu, Dec 4, 2014 at 6:59 AM, <charle...@gmail.com <javascript:>> wrote: > >> Hi Adam, >> >> I'm thinking of doing an RTL-SDR project with the BBB, as well. Sorry I >> can't lend any advice, yet, since it's just concept stage for me right now. >> I may have some insight in a week or two since a satcom project here in NYC >> may be moving from using the RPi to the BBB. >> >> Have you had any further success with your BBB setup? Would you mind >> telling me which stick you're using? >> >> Thanks much. >> Charles >> >> >> >> On Tuesday, November 18, 2014 5:55:02 PM UTC-5, adam.c...@gmail.com >> wrote: >>> >>> I'm attempting to use a RTL-SDR stick on my BBB, but too many samples >>> are being dropped to be stable. When running the test program rtl_test, a >>> typical output is like this: >>> >>> Sampling at 2048000 S/s. >>> Reporting PPM error measurement every 10 seconds... >>> Press ^C after a few minutes. >>> Reading samples in async mode... >>> lost at least 68 bytes >>> real sample rate: 2048506 current PPM: 248 cumulative PPM: 248 >>> real sample rate: 1613474 current PPM: -212171 cumulative PPM: -108885 >>> lost at least 33108 bytes >>> [snip] >>> lost at least 33820 bytes >>> lost at least 568 bytes >>> real sample rate: 2231729 current PPM: 89712 cumulative PPM: -42138 >>> real sample rate: 2047938 current PPM: -30 cumulative PPM: -31448 >>> >>> A perhaps telling dmesg output occurs when I start the test program: >>> >>> sched: RT throttling activated >>> >>> The same stick has no problem on my laptop and a Raspberry Pi. I'm >>> running debian jessie and I tested kernel kernel versions 3.8.13-bone67, >>> 3.14.23-ti-r34, and 3.18.0-rc5-bone1 which all had the problem. Any >>> thoughts? >>> >> > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
