-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Matt Ettus wrote: > Douglas Geiger wrote: >> I'm at svn revision 10441 - with both the firmware and fpga code built >> from that (using Xilinx ISE 10.1 to make the fpga). I've just modified >> the txrx.c code - adding: >> clocks_enable_test_clk(true, 2); >> clocks_mimo_config(MC_WE_LOCK_TO_SMA); >> just before the while(1) loop >> >> My rx_mimo.cc code also calls ->config_mimo(MC_WE_LOCK_TO_SMA), but >> right now I've stepped back to just getting one USRP2 synchronized to my >> external source - which in this case is a function generator with a >> 10MHz sine with 2V P-P. >> >> Is it possible some of the hardware on my USRP2's isn't working? > > Unlikely, since it was tested before shipping. > > I will send you code to run in a separate email. > > Matt
Ok - now that I've discovered I had some bad cabling - specifically a bad T-splitter: the side going to my O-scope worked, the side going to my USRP2's did *not* - which I suppose can be chalked up to user error. I am now able to synchronize the clocks - both with the firmware/fpga code you sent, and the version I had built locally. However - once I start running my code on the host PC, the clock loses sync. I have to power down, and re-power-up the USRP2 for the clock to lock onto my external source again. This is with the firmware/fpga from svn r10441, and my host code. I've tried calling ->config_mimo and - ->sync_to_pps() as soon as I create my USRP2 objects, but that didn't seem to help. Doug - -- Doug Geiger Research Assistant Communications and Signal Processing Lab Oklahoma State University http://cspl.okstate.edu douglas.gei...@okstate.edu doug.gei...@ieee.org -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (Cygwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFJnupogfOzzR5bXIgRAk+zAKCOijHE3lvJxrKAsjfD4rsoygDe6ACgrdU0 UxaHmnOjOccW7w31MglgJWE= =pdqN -----END PGP SIGNATURE----- _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
