On 03/07/2013 09:19 PM, john jade wrote: > Hi Josh, > Thanks for the reply.Is there any sample example you could send me? I > looked at the link it has nothing related to this. > I want the code in python. > Thanks > > I have another doubt... > I just looked at tags_demo.cc example.In that code ,it has following lines > > const uhd::time_spec_t time_now = usrp_sink->get_time_now(); > > boost::shared_ptr<tag_source_demo> tag_source = > boost::make_shared<tag_source_demo>( > time_now.get_full_secs() + 1, time_now.get_frac_secs(), //time now > + 1 second > samp_rate, idle_dur, burst_dur > ); > to get time. > 1. Here TIME_NOW is mother board time or something else?
it was the time on the motherboard > 2. What should i do if i have to get time in nanoseconds? The time format of the tag is just a tuple of full and fractional seconds, But if you are taking about that time_now, that was just to get an idea of what time the device was on. You can read this value, or set it to a known starting point like UTC. In any case, see the uhd/types/time_spec.hpp, you can readily convert between that and seconds if need be. > 3.Is there any option to do it in python? > Yes, tags can be created in python, I hope this is documented in the blocks coding guide Hope that helps! > Thanks. > > > On Fri, Mar 8, 2013 at 11:42 AM, Josh Blum <j...@joshknows.com> wrote: > >> >> >> On 03/07/2013 06:38 PM, john jade wrote: >>> Hi, >>> >>> I am using 2 USRPN210 devices one for transmitting and one for receiving >>> and relaying it back to sender. I want time at which packet is >> transmitted >>> in both the devices.I am using benchmark_tx and bencmark_rx codes. >>> please help me the code that i have to put... >>> >> >> Actually, it works the other way around, you can control the time a >> packet is transmitted using stream tags. >> >> A few good links about this section: >> >> >> http://code.ettus.com/redmine/ettus/projects/uhd/wiki/GNU_Radio_UHD#Using-UHD-Software-with-GNU-Radio >> >> -josh >> >>> Thanks. >>> >>> >>> >>> _______________________________________________ >>> Discuss-gnuradio mailing list >>> Discuss-gnuradio@gnu.org >>> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >>> >> >> _______________________________________________ >> Discuss-gnuradio mailing list >> Discuss-gnuradio@gnu.org >> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >> > _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
