Thanks! That setup hadn't been 100% clear to me before. Makes sense now. Sean
-----Original Message----- From: Josh Blum [mailto:j...@joshknows.com] On Behalf Of Josh Blum Sent: Friday, February 17, 2012 1:23 PM To: Nowlan, Sean Cc: discuss-gnuradio@gnu.org Subject: Re: [Discuss-gnuradio] How to get time from GPSDO On 02/17/2012 09:58 AM, Nowlan, Sean wrote: > Just to enhance my (and everyone's) knowledge, does that call give you > information substantially different from get_time_now()? Other than > you get a UHD Time Spec with seconds and fractional seconds? > Well, there is a time in the GPSDO in seconds that increments once a PPS. Then there is a time in the FPGA that increments on each clock cycle. Supposing you make a new uhd device object and a GPSDO is detected, the time programmed into the FPGA registers is initialized to march in lock-step with the GPSDO. This is done automatically, but its as simple as ->set_time_next_pps(gpsdo_time + 1); I wanted Wu to know that all the GPSDO sensors are available for access in python. As in "gps_gpgsa", "gps_gprmc", and "gps_gpgga" -Josh > Sean > > -----Original Message----- From: > discuss-gnuradio-bounces+sean.nowlan=gtri.gatech....@gnu.org > [mailto:discuss-gnuradio-bounces+sean.nowlan=gtri.gatech....@gnu.org] > On Behalf Of Josh Blum Sent: Friday, February 17, 2012 12:55 PM To: > discuss-gnuradio@gnu.org Subject: Re: [Discuss-gnuradio] How to get > time from GPSDO > > >> >> and thought usrp->get_mboard_sensor is the function that I need. >> But I don't know how to use this function in GNURadio. It seems that >> the code is written in C++. So can I use it directly in GNURadio? >> >> > > All the functions are brought into python via swig, so: > http://gnuradio.org/cgit/gnuradio.git/tree/gr-uhd/include/gr_uhd_usrp_ > sink.h#n279 > > you would do this python: secs = > the_usrp_block.get_mboard_sensor("gps_time").to_int() > > -Josh > > _______________________________________________ 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
