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Re: [Discuss-gnuradio] get GPS time from GPSDO module


From: Nick Foster
Subject: Re: [Discuss-gnuradio] get GPS time from GPSDO module
Date: Thu, 28 Jul 2011 16:11:04 -0700

On Fri, 2011-07-29 at 01:07 +0200, Bastien Auneau wrote:
> uhd::sensor_value_t val = usrp->get_mboard_sensor("ref_locked");
>  works fine, no runtime error
> 
> 
> uhd::sensor_value_t val = usrp->get_mboard_sensor("gps_locked");
>  gets runtime error just like gps_time

yeah, that's weird, shouldn't be happening. i'll look into it.

--n

> 
> On 28 July 2011 22:58, Bastien Auneau <address@hidden> wrote:
>         In case previous email with attached screenshot did not work
>         run-time error
>         Unhandled exception at 0x759ab9bc in TE.exe: Microsoft C++
>         exception: uhd::runtime_error at memory location 0x0018db9c..
>         
>         code :
>         
>             uhd::sensor_value_t val =
>         usrp->get_mboard_sensor("gps_time");
>             std::cout << val.to_pp_string() << std::endl;
>         
>         
>         It gives unhandled exception at first line
>         And I realized that the exception happen every time, and after
>         continuing (because VC9 breaks on unhandled exception) it
>         gives this all same value :
>           GPS time: 2077252342 seconds
>         
>         
>         
>         
>         
>         On 28 July 2011 21:06, Nick Foster <address@hidden> wrote:
>                 On Thu, 2011-07-28 at 20:13 +0200, Bastien Auneau
>                 wrote:
>                 > I use :
>                 > uhd::sensor_value_t val =
>                 usrp->get_mboard_sensor("gps_time");
>                 > std::cout << val.to_pp_string() << std::endl;
>                 >
>                 >
>                 > I got first an unhandled exception runtime error
>                 > at second run, it outputs :
>                 > GPS time: 2077252342 seconds
>                 >
>                 >
>                 > and these two in a row at each try
>                 >
>                 >
>                 > Also, the value returned 2077252342 never increase
>                 > And I did not plug the GPS antenna, so the GPSDO is
>                 not locked
>                 >
>                 >
>                 > How can I get is stable ?
>                 > Why runtime error pops up half of the time ?
>                 
>                 What runtime error are you seeing? Please cut and
>                 paste the error.
>                 
>                 > should I plug the antenna and wait for GPS lock ?
>                 
>                 Only if you really care what time it is.
>                 
>                 > How do I check if GPS is locked ?
>                 
>                 get_mboard_sensor("gps_locked")
>                 
>                 --n
>                 
>                 
>                 >
>                 >
>                 > On 28 July 2011 19:44, Nick Foster <address@hidden>
>                 wrote:
>                 >
>                 >         On Thu, 2011-07-28 at 19:03 +0000, Bastien
>                 Auneau wrote:
>                 >         > Hi All
>                 >         >
>                 >         > I cannot find in latest version
>                 (downloaded the 28/07/2011)
>                 >         how to get
>                 >         > UTC time from GPSDO.
>                 >         >
>                 >         > There used to be a get_time() function in
>                 gps_ctrl, but not
>                 >         anymore
>                 >         > How should I do to get GPS time ?
>                 >
>                 >
>                 >         The mboard_sensors interface should be used.
>                 >         get_mboard_sensor("gps_time") should get you
>                 what you're
>                 >         looking for.
>                 >
>                 >         --n
>                 >
>                 >         >
>                 >         > Regards
>                 >         > Bastien
>                 >         >
>                 >         >
>                 _______________________________________________
>                 >         > Discuss-gnuradio mailing list
>                 >         > address@hidden
>                 >         >
>                 https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
>                 >
>                 >
>                 >
>                 >
>                 
>                 
>                 
>         
>         
> 
> 





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