Hi! You could also look at NavSpark (http://navspark.mybigcommerce.com/navspark-arduino-compatible-development-board-with-gps/). It has a serial NMEA output, a PPS digital output AND a trigger pin for timestamp capture.
Regards, Edésio On Wed, Oct 25, 2017 at 07:45:49AM +0100, Iain Young wrote: > Hi Michael, > > You Wrote: > > >We are using BeagleBone Black + GPS 1 pps etc in our time-transfer system > > > >You can see the overlays in > >https://github.com/openttp/openttp/tree/develop/software/system/device-tree-overlays > > Very interesting, I will have to clone the git repo, and have a closer > look. > > I have my own 'fleet' of Beaglebone Blacks and Greens monitoring LORAN and > GPS. Working to add my small rubidiums and some LF and HF Clocks as > well. One day I will get the time to document the entire thing! > > I am using the PRUSS to do Time Interval Measurements (details can be > found in the list archive), and feeding a PPS via TIMER4, and the highly > accurate timer that the Beaglebones have onboard. > > Is there a particular reason you used the GPIO rather than TIMER4 ? > (If your google for Dan Drown DMTIMER, you will find the Linux Driver) > > He also has coded up the TCLKIN pin, so that you can clock the > Beaglebone from an external reference, which also may be of interest. > (That bit I still need to do - I have the code enabled, just need to > plug a reference in to the Beaglebones!) > > FreeBSD also has a driver for the TIMER4 input > > > Iain > _______________________________________________ > 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. _______________________________________________ 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.
