On Wed, Mar 26, 2014 at 2:51 PM, Henry Hallam <[email protected]>wrote:
> Hi Gabs, > > I have a Z3805A and a Beaglebone, and would like to set up an NTP > server for the lab. Any kernel drivers and/or setup hints would be > appreciated :) > > It's best to go in steps. Resist the temptation to simply connect everything, turn it on and see it is works. The first step is to get NTP installed and running using Internet pool servers for reference clocks. Make sure this is working reliably. NTP may already be mostly configured. I don't know. Next make sure the kernel level PPS diver is working. To test PPS there is a user-land test program you can run that simply prints the time of each pulse to the console. Besure to watch both the voltage levels (the Beagle is 3.3 volts) and the polarity of the pulse. If you get the polarity wrong it will appear t work but the timing will lag by the pulse width (because the falling edge is now the raising edge.) Be sure and match up the levels for both serial and PPS. After both of the above, adding a GPS based reference clock to NTP is easy. All you do is edit the config file. Obviously I've left out much detail but the biggest thing is to follow the step by step process -- Chris Albertson Redondo Beach, California _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
