From glen_call@ftw.paging.mot.com Sun Jun 16 03:33:11 1996
From: Glen Call <glen_call@ftw.paging.mot.com>
Date: Fri, 24 May 1996 11:19:11 -0500
To: Mills@huey.udel.edu
Subject: Re:  xntp 3.5 support for Motorola GPS
Cc: orlando_perdomo@ftw.paging.mot.com
X-Sun-Charset: US-ASCII


| Drivers aren't hard to build at all. Your contribution/modification
| of a driver would be much appreciated, if it isn't there already.

David -

I studied the NMEA driver, made a correction (2 pls, see below), and
was able to drive the Motorola Oncore GPS.  I would be happy to supply
the whole file if you wish.

$ diff OLDrefclock_nmea.c refclock_nmea.c
145c145
< 	gps_send(pp->io.fd,"$PMOTG,RMC,0000\n", peer);
---
> 	gps_send(pp->io.fd,"$PMOTG,RMC,0000*1D\r\n", peer);
353c353
< 	gps_send(pp->io.fd,"$PMOTG,RMC,0\n", peer);
---
> 	gps_send(pp->io.fd,"$PMOTG,RMC,0000*1D\r\n", peer);
$

BTW, I am wondering if the daemon has the ability to issue an alarm if a
reference clock drops out.  If not, I suppose my application could poll
using logic borrowed from "ntpq" or similar utility.  Suggestions would
be most welcome.

Best regards,
Glen

PS: Do you know of any implementations of SNTP available on the Web?


Glen Call           gcall@ftw.paging.mot.com
Motorola Advanced Messaging Systems Division