Hi Marcus, Setting them to 256 is taking much longer before I get the error. I'll try playing with them and other parameters.
Thank you Marcus. On 24 November 2015 at 21:59, Marcus D. Leech <[email protected]> wrote: > On 11/24/2015 04:54 PM, Saulo Queiroz wrote: > >> >> Hi, >> >> I got the following message after some (random) period of time running a >> grc example (derived from gr-ieee802-11) on B210. >> >> gr uhd usrp source0 - USRP Source Block caught rx error code: 2 >> >> In my grc I have one Sink and one Source UHD block. Both has 2 active >> channels configured as below: >> >> master_clock_rate=15.36e6 and Sample rate= 7.68e6 >> >> Ch0: Center Freq (for both sink and source) >> uhd.tune_request(5.6e9 + 2.5e6 , rf_freq = 5.6e9, rf_freq_policy = >> uhd.tune_request.POLICY_MANUAL) >> >> Ch1: Center Freq (for both sink and source) >> uhd.tune_request(5.6e9 - 2.5e6 , rf_freq = 5.6e9, rf_freq_policy = >> uhd.tune_request.POLICY_MANUAL) >> >> With this I intend to enable B210 to keep simultaneously independent TXs >> through different channels while receiving through these same channels (I >> don't care about cross talk now). Does it sound right? Is this feasible on >> B210? >> If im not missing something, this succeeds for a while before I get the >> error message. >> >> OTHER INFO >> Ubuntu 14.04, usb 3.0 (b210 alone in the bus), UHD_003.009.000-0-gcd88f80f >> >> many thanks, >> >> -- >> Saulo Jorge bq >> - "Beware of bugs in the above code; I have only proved it correct, not >> tried it." >> Donald Knuth. >> >> >> What type of USB-3.0 controller do you have? > > Have you tried tuning num_recv_frames and num_send_frames: > > http://files.ettus.com/manual/page_transport.html#transport_usb > > > > _______________________________________________ > Discuss-gnuradio mailing list > [email protected] > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > -- Saulo Jorge bq - "Beware of bugs in the above code; I have only proved it correct, not tried it." Donald Knuth.
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