A result! I have it working now.
A few notes in no particular order for anyone else who wishes to try this with the soekris 4521 1/ the junction of R61/r62 are between JP1 and the CF slot but are not marked as R61/R62. the end of the 2 resistors facing the outside edge of the board is the junction between R61/R62 I can send a photo if anyone needs it 2/ the GPIO0 pin is the second pin in from the left on the bottom row as seen with the board serial port facing you 3/ I didn't manage to get it to use NMEA data on the only available serial port, besides having the serial console on this port the soekris board will not boot anyway if there is NMEA data coming in on the boot console port. Instead I have PPS disciplining external NTP server sources. Noting is going to happen (as in it looks like it's not working) until you have a valid prefer source set (If in doubt it does indeed pay to read the NTP documentation!) this is a good site for that http://www.eecis.udel.edu/~mills/ntp/html/pps.html when the 4501 boards arrive here the intention is to build a pair of NTP servers using clockblocks (one will also require a fat PPS to condition a Z3801A PPS output) One will go in our data-centre where it will be a very stable few msec away from the other irish stratum 1 standards and following tests I'll make it (or it's downstream ) publicly available. Any thoughts on what sort of load a soekris net4501 NTP server can bear. the other one will be here in the house. Thank you to all here, especially PHK and John Ackermann for putting up with all my Dumb questions Also thanks to John for explaining to me exactly how this very clever hack works. regards Brendan Minish _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
