On Tue, Jun 18, 2013 at 9:27 AM, Rob <[email protected]> wrote:
As I wrote before, your ntp config is not correct. please copy it
from the docs. However, that is not the cause of the problem.
(it would be the cause of severe inaccuracy once you obtain NMEA data
as you are not using PPS)
yeah, figured I'd walk before I ran so I tried to make my ntp.conf file as
simple as possible to at least get some timing info, which thanks to your
and AC's help I now have.
ok, now onto pps. I went here
http://gpsd.berlios.de/gpsd.html
...and am now using this as my ntp.conf
---
server 127.127.28.0 minpoll 4 maxpoll 4
fudge 127.127.28.0 time1 0.420 refid GPS
server 127.127.28.1 minpoll 4 maxpoll 4 prefer
fudge 127.127.28.1 refid GPS1
---
But, sadly no pps sync...
---
/ # ntpq -p
remote refid st t when poll reach delay offset
jitter
==============================================================================
*SHM(0) .GPS. 0 l 7 16 377 0.000 0.048
0.005
SHM(1) .GPS1. 0 l - 16 0 0.000 0.000
0.000
---
I have pps debug output built into the kernel and can see pps events on the
console while I look at gpsd output
---
PPS event at 9862
PPS event at 9962
PPS event at 10062
PPS event at 10162
---
Sorry, this is so long, but here's a dump of the gpsd output. There are
several things that concern me, such as some of the warning, but not sure
of the severity
/ # gpsd -bn -N -D5 /dev/ttyO0
gpsd:INFO: launching (Version 3.7)
gpsd:IO: opening IPv4 socket
gpsd:INFO: listening on port 2947
gpsd:PROG: NTPD shmat(0,0,0) succeeded, segment 0
gpsd:PROG: NTPD shmat(32769,0,0) succeeded, segment 1
gpsd:PROG: NTPD shmat(65538,0,0) succeeded, segment 2
gpsd:PROG: NTPD shmat(98307,0,0) succeeded, segment 3
gpsd:PROG: shmat() succeeded, segment 131076
gpsd:PROG: shared-segment creation succeeded,
gpsd:PROG: PPS thread launched
gpsd:INFO: NTPD ntpd_link_activate: 1
gpsd:INFO: stashing device /dev/ttyO0 at slot 0
gpsd:PROG: no etc/gpsd/device-hook present, skipped running ACTIVATE hook
gpsd:INFO: opening read-only GPS data source type 2 and at '/dev/ttyO0'
gpsd:PROG: PPS Create Thread gpsd_ppsmonitor
gpsd:PROG: PPS chrony socket /var/run/chrony.ttyO0.sock doesn't exist
gpsd:INFO: PPS cycle: 631139111, duration: 631139111 @ 1371576962.280231
gpsd:INFO: speed 4800, 8N1
gpsd:PROG: Probing "Garmin USB binary" driver...
gpsd:PROG: Probe not found "Garmin USB binary" driver...
gpsd:PROG: Probing "GeoStar binary" driver...
gpsd:IO: Sent GeoStar packet id 0xc1
gpsd:PROG: Probe not found "GeoStar binary" driver...
gpsd:PROG: Probing "Trimble TSIP" driver...
gpsd:INFO: speed 9600, 8O1
gpsd:INFO: speed 4800, 8N1
gpsd:PROG: Probe not found "Trimble TSIP" driver...
gpsd:PROG: no probe matched...
gpsd:INFO: gpsd_activate(): activated GPS (fd 4)
gpsd:INFO: device /dev/ttyO0 activated
gpsd:INFO: running with effective group ID 0
gpsd:INFO: running with effective user ID 99
gpsd:INFO: startup at 2013-06-18T17:36:02.000Z (1371576962)
gpsd:PROG: switch_driver(Generic NMEA) called...
gpsd:PROG: selecting Generic NMEA driver...
gpsd:INFO: /dev/ttyO0 identified as type Generic NMEA (0.564143 sec @
4800bps)
gpsd:IO: <= GPS:
$GPRMC,173602.00,A,3425.96985,N,11951.97924,W,0.039,,180613,,,A*63
gpsd:DATA: merge_ddmmyy(180613) sets year 2013
gpsd:DATA: GPRMC: registers fractional time 173602.00
gpsd:DATA: RMC: ddmmyy=180613 hhmmss=173602.00 lat=34.43 lon=-119.87
speed=0.02 track=0.00 mode=2 status=1
gpsd:DATA: GPRMC time is 1371576962.000000 = 2013-06-18T17:36:2.00Z
gpsd:PROG: GPRMC sentence timestamped 173602.00.
gpsd:PROG: GPRMC starts a reporting cycle.
gpsd:DATA: packet type 1 from /dev/ttyO0 with
{ONLINE|TIME|LATLON|SPEED|TRACK|STATUS|MODE|PACKET|DRIVER|CLEAR}
gpsd:IO: <= GPS: $GPVTG,,T,,M,0.039,N,0.072,K,A*2C
gpsd:DATA: packet type 1 from /dev/ttyO0 with {ONLINE|PACKET}
gpsd:IO: <= GPS:
$GPGGA,173602.00,3425.96985,N,11951.97924,W,1,06,2.39,2.7,M,-33.5,M,,*6B
gpsd:DATA: GPGGA: registers fractional time 173602.00
gpsd:DATA: GGA: hhmmss=173602.00 lat=34.43 lon=-119.87 alt=2.70 mode=3
status=1
gpsd:DATA: GPGGA time is 1371576962.000000 = 2013-06-18T17:36:2.00Z
gpsd:PROG: GPGGA sentence timestamped 173602.00.
gpsd:DATA: packet type 1 from /dev/ttyO0 with
{ONLINE|TIME|LATLON|ALTITUDE|STATUS|MODE|PACKET}
gpsd:IO: <= GPS: $GPGSA,A,3,16,06,07,23,10,13,,,,,,,3.29,2.39,2.26*00
gpsd:PROG: GPGSA sets mode 3
gpsd:DATA: GPGSA: mode=3 used=6 pdop=3.29 hdop=2.39 vdop=2.26
gpsd:DATA: packet type 1 from /dev/ttyO0 with {ONLINE|MODE|DOP|PACKET|USED}
gpsd:IO: <= GPS:
$GPRMC,173603.00,A,3425.96981,N,11951.97923,W,0.039,,180613,,,A*61
gpsd:DATA: merge_ddmmyy(180613) sets year 2013
gpsd:DATA: GPRMC: registers fractional time 173603.00
gpsd:DATA: RMC: ddmmyy=180613 hhmmss=173603.00 lat=34.43 lon=-119.87
speed=0.02 track=0.00 mode=2 status=1
gpsd:DATA: GPRMC time is 1371576963.000000 = 2013-06-18T17:36:3.00Z
gpsd:PROG: GPRMC sentence timestamped 173603.00.
gpsd:PROG: GPRMC starts a reporting cycle.
gpsd:PROG: tagged GGA as a cycle ender.
gpsd:DATA: packet type 1 from /dev/ttyO0 with
{ONLINE|TIME|LATLON|SPEED|TRACK|MODE|PACKET|CLEAR}
gpsd:IO: <= GPS: $GPVTG,,T,,M,0.039,N,0.072,K,A*2C
gpsd:DATA: packet type 1 from /dev/ttyO0 with {ONLINE|PACKET}
gpsd:IO: <= GPS:
$GPGGA,173603.00,3425.96981,N,11951.97923,W,1,06,2.39,2.6,M,-33.5,M,,*68
gpsd:DATA: GPGGA: registers fractional time 173603.00
gpsd:DATA: GGA: hhmmss=173603.00 lat=34.43 lon=-119.87 alt=2.60 mode=3
status=1
gpsd:DATA: GPGGA time is 1371576963.000000 = 2013-06-18T17:36:3.00Z
gpsd:PROG: GPGGA sentence timestamped 173603.00.
gpsd:PROG: GPGGA ends a reporting cycle.
gpsd:DATA: packet type 1 from /dev/ttyO0 with
{ONLINE|TIME|LATLON|ALTITUDE|STATUS|MODE|PACKET|REPORT}
