Re: [Discuss-gnuradio] Transmission time control from python level

2012-07-27 Thread Josh Blum
> Unfortunately, this same output is displayed repeatedly. I am not sure why > the time does not change. Is there any other command that will keep > printing/pulling the recent time after 10 ms (1 ms)? > > time_spec is a stuct that holds integer time and fractional time for high precision. Noth

Re: [Discuss-gnuradio] Transmission time control from python level

2012-07-27 Thread Nazmul Islam
Thanks a lot, Josh. I tried to use the time_spec_t class in the GRC generated python code through the following way: class TimeFind(grc_wxgui.top_block_gui): . self.time_spec_t = uhd.time_spec_t(0) . if __name__ == '__main__': ...

Re: [Discuss-gnuradio] Transmission time control from python level

2012-07-27 Thread Josh Blum
On 07/27/2012 10:24 AM, Nazmul Islam wrote: > Sorry for the previous email. I mistakenly hit the sent button before > completing the mail. Here is the complete mail: > > Is it possible to see the time through USRP GPSDO with > microsecond/millisecond granularity? I want to synchronize the timing

Re: [Discuss-gnuradio] Transmission time control from python level

2012-07-27 Thread Nazmul Islam
; IIRC, one of the stream tags examples already implements the >> aforementioned algorithm. You just need to lift it and perhaps put it in a >> new block in line with your GR/GRC processing chain. >> >> ** ** >> >> Sean**** >> >>

Re: [Discuss-gnuradio] Transmission time control from python level

2012-07-12 Thread Nowlan, Sean
012 7:00 AM To: j...@ettus.com Cc: discuss-gnuradio@gnu.org Subject: Re: [Discuss-gnuradio] Transmission time control from python level Hi Josh, Thanks a lot for your reply. Can I control the TX stream from the GRC generated python code? In other words, can I change the UHD:USRP source/sink param

Re: [Discuss-gnuradio] Transmission time control from python level

2012-07-12 Thread Nazmul Islam
Hi Josh, Thanks a lot for your reply. Can I control the TX stream from the GRC generated python code? In other words, can I change the UHD:USRP source/sink parameters to set up the time stamps or controlling the scheduling? Thanks, Nazmul On Sun, Jul 8, 2012 at 12:30 AM, Josh Blum wrote: > >

Re: [Discuss-gnuradio] Transmission time control from python level

2012-07-07 Thread Josh Blum
On 07/07/2012 09:30 AM, Nazmul Islam wrote: > I have three USRP's and I want them to transmit a continuous stream of > repeated GLFSR source in non-overlapping manner. In other words, each > transmitter will transmit the source for 1 second and then pause for 5 > seconds. All transmitters will tr

[Discuss-gnuradio] Transmission time control from python level

2012-07-07 Thread Nazmul Islam
I have three USRP's and I want them to transmit a continuous stream of repeated GLFSR source in non-overlapping manner. In other words, each transmitter will transmit the source for 1 second and then pause for 5 seconds. All transmitters will transmit during the 'odd' seconds so that there is a 1 s