[ntp:questions] Re: NMEA refclock questions: baud-rate and PPS

John Pettitt jpp at cloudview.com
Sat Jan 28 22:13:11 UTC 2006


Harlan Stenn wrote:
> Has anybody gotten PPS to work using USB serial?  I tried it under FreeBSD5
> and it didn't seem to work for me.
> 
> H

I don't think it ever will - the PPS code is in the serial port driver and a different driver is
used for USB.    Add to that the fact that the USB packetized data introduces a whole new
jitter/latency issue and it's not going to work well even if the driver support was there.

John




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