"David Taylor" wrote in message news:l828dq$abc$1...@dont-email.me...
On 08/12/2013 16:36, Chris North wrote:
Most of the discussion here is way above my head, but I'm hoping
somebody will be able to help me.
I have a Sure GPS board, modified according to David Taylor's plan,
connected to a Windows 7 PC by USB (for power only) and by serial
null-modem cable to COM1 on a PCI serial card.
I am running ntpd 4.2.7p401 and have installed the signed serialpps.sys
(14.May.2012 16:08) in place of the standard serial.sys driver. I have
also installed the serialpps-ppsapi-provider.dll with a suitable value
for the PPSAPI_DLLS environment variable.
When I first set this up a year or more ago, I got the GPS_NMEA and PPS
entries displayed in the output from ntpq. However, I have just realised
that PPS is no longer there. NTP is still giving reasonable accuracy -
adequate for my needs - but I'd still like to get PPS working again.
[]
Can anybody suggest anything useful, please?
First question - is the blue PPS LED on the Sure board flashing? Well,
I thought you will have already checked that.
Second, stop the NTP service and see whether my serial port LEDs program:
http://www.satsignal.eu/software/net.htm#SerialPortLEDs
can see the PPS signal. You might be able to isolate any hardware
problems with these two tests. It seems unlikely to be a software
problem as I have the same setup working on a Windows-7/64 and a
Windows-8.1/64 PC, to which the various updated have been applied.
Perhaps the lead to the COM1 port has fallen out?
--
Cheers,
David
Web: http://www.satsignal.eu
David,
Apologies for omitting this important info from my first message.
The blue LED and your LED display both flash correctly.
Also the MStar MiniCDU program shows the GPS working fine on COM1, with a
good collection of satellites and position data arriving.
I seem to have omitted some of the event log items, so here is a complete
version:
Level Date and Time Source Event ID Task Category
Information 08/12/2013 17:22:18 NTP 3 None HZ 64.102 using 43
msec timer 23.256 Hz 64 deep
Information 08/12/2013 17:22:18 NTP 3 None 127.127.22.1 local
addr 127.0.0.1 -> <null>
Error 08/12/2013 17:22:18 NTP 1 None refclock_ppsapi:
time_pps_create: Exec format error
Information 08/12/2013 17:22:18 NTP 3 None Listen normally on
6 Local Area Connection* 12 [fe80::81:99f:3f57:fef5%12]:123
Information 08/12/2013 17:22:18 NTP 3 None Listen normally on
5 Local Area Connection* 12 [2001:0:9d38:90d7:81:99f:3f57:fef5]:123
Information 08/12/2013 17:22:18 NTP 3 None Listen normally on
4 Loopback Pseudo-Interface 1 127.0.0.1:123
Information 08/12/2013 17:22:18 NTP 3 None Listen normally on
3 Loopback Pseudo-Interface 1 [::1]:123
Information 08/12/2013 17:22:18 NTP 3 None Listen normally on
2 Local Area Connection 192.168.1.10:123
Information 08/12/2013 17:22:18 NTP 3 None Listen and drop on
1 v6wildcard [::]:123
Information 08/12/2013 17:22:18 NTP 3 None Listen and drop on
0 v4wildcard 0.0.0.0:123
Information 08/12/2013 17:22:18 NTP 3 None proto: precision =
0.300 usec (-22)
Information 08/12/2013 17:22:15 NTP 3 None HZ 64.102 using 43
msec timer 23.256 Hz 64 deep
Information 08/12/2013 17:22:15 NTP 3 None Windows clock
precision 15.600 msec, min. slew 6.410 ppm/s
Information 08/12/2013 17:22:15 NTP 3 None MM timer
resolution: 1..1000000 msec, set to 1 msec
Information 08/12/2013 17:22:15 NTP 3 None Performance
counter frequency 2.598 MHz
Information 08/12/2013 17:22:15 NTP 3 None Clock interrupt
period 15.600 msec
Information 08/12/2013 17:22:15 NTP 3 None Raised to realtime
priority class
Information 08/12/2013 17:22:15 NTP 3 None Command line:
C:\Program Files (x86)\NTP\bin\ntpd.exe -g -M -c f:\NTP\etc\ntp.conf
Information 08/12/2013 17:22:15 NTP 3 None ntpd
4.2.7p401@1.2483-o Nov 30 12:38:18.72 (UTC-00:00) 2013 (1): Starting
So everything seems to be working except for the PPS being detected by NTP.
Is there any way to examine the driver, to check that it's installed and
working?
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