[Thumbgps-devel] Article -- Macx-1: GPS receiver with standard USB connector and PPS support

Eric S. Raymond esr at thyrsus.com
Wed May 9 17:38:41 EDT 2012


Ron Frazier (NTP) <timekeepingntplist at techstarship.com>:
> Good to see you.  Just wondering, are there any GPS applications
> which will croak because of having DCD being pulsed in that manner?

Why should the applications care? Only GPSD ever *sees* that port - the
applications are decoupled from it.


>                                                             Also,
> are there other applications which expect the pps to be coming
> though another handshaking pin besides DCD?

Note that GPSD will actually notice PPS over RI and CTS as well.
It doesn't care - a transition on any handshake line is treated
as a PPS event, because the onlty thing it ever means from a GPS.
-- 
		<a href="http://www.catb.org/~esr/">Eric S. Raymond</a>



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