Hi Marcus, Initially when I create the USRP object, I synchronize USRP to external PPS though self.usrp1.set_time_next_pps(round(time.time())+1) method. and in the function get_start(), I wrote like: self.stop() self.wait() self.disconnect_all() #self.usrp1.stop() #self.usrp1.start() self.usrp1.set_start_time(self.usrp1.get_time_now() + uhd.time_spec_t(5)) self.connect(...) self.connect(...) self.connect(filesink, self.usrp1) self.start I wish the USRP stops, and restarts transmission 5 sec later every time I run the get_start() function. But the USRP doesn't stop, and will produces LLLLLLLLLL on the screen after around 5 sec. If I use " self.usrp1.set_command_time(self.usrp1.get_time_now() + uhd.time_spec_t(5))" instead of set_start_time(), it does stop transmission for 5 sec and start, but it's not the correct command for start time.
Do you have any advice how can I make it work? I appreciate all your help! Best regards, Wei Marcus D. Leech <[email protected]> 于2021年10月5日周二 下午3:15写道： > On 2021-10-05 4:16 a.m., Huang Wei wrote: > > Hello group, > > > > I am running USRP in GRC. I would like the USRP to stop and restart > > transmission at specific times. so I wrote a function in the top_block > > class like: > > self.stop() > > self.wait() > > self.usrp.set_start_time(an absolute time) > > self.start() > > It doesn't work. Also I tried 1) add clear_commnad_time() and > > set_command_time() before; 2) disconnect(), set_command_time() and > > connect (); 3) usrp.stop(), usrp start(). All these methods don't make > > sure USRP will restart at the time I want. > > Is there any command that can achieve this purpose? > > > > Thank you very much! > > > > Best regards, > > Wei > > > What times are you setting? How are you setting the initial time on the > device? > > > _______________________________________________ > USRP-users mailing list -- [email protected] > To unsubscribe send an email to [email protected] >
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