Re: [Discuss-gnuradio] UHD: "set_time_now" and "get_time_now" in multi_usrp

[Josh Blum]

get_time_now() returns the time on the 0th motherboard in the 
configuration. The only reason you might want to read the time on a 
particular board in the configuration is to test for sync.

There is some logic already in the set_time_unknown_pps() to check for 
sync. Would that be useful to be brought out as a "bool 
is_time_synced()" method?

http://code.ettus.com/redmine/ettus/projects/uhd/repository/revisions/master/entry/host/lib/usrp/multi_usrp.cpp#L143

_josh

On 10/27/2010 03:35 AM, Per Zetterberg wrote:
> I realize that a "set_time_now" in multi_usrp would be dubious because
> without any PPS all USRPs would have somewhat different times (maybe on
> the order of microseconds to milliseconds). This is (typically) not
> enough for MIMO applications.
> However, if one is aware of this fact it can be useful. It means for
> instance that one can verify that multi-usrp reception works even
> without having set up PPS.
>
> BR/
> Per
>
>
> On Wed, 2010-10-27 at 11:40 +0200, Per Zetterberg wrote:
> > Hi Josh and List,
> >
> > There is no set_time_now in multi_usrp. When I use get_time_now which
> > USRP2 do I get the time of ?
> >
> > BR/
> > Per
> >
> >
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