You are here: start » tools » time

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revisionPrevious revision
Next revision		Previous revision
tools:time [2022/08/22 15:37] – [NTP] darrontools:time [2024/07/10 12:12] (current) – [Resources] darron
Line 151: Line 151:
 </code> </code>
    
 +NB ntpq and ntptime are part of [[tools:time#ntp|ntp]].
 +
 +
 ===PPS=== ===PPS===
  
Line 227: Line 230:
 __systemd__ __systemd__
  
-systemd hijacks the GPSD socket so you will need to try a few things+systemd hijacks the GPSD socket (like inetd) so you will need to try a few things
 to resolve this. to resolve this.
  
Line 448: Line 451:
 <code> <code>
 apt install ntp ntpdate apt install ntp ntpdate
 +</code>
 +
 +<code>
 /etc/init.d/ntp stop /etc/init.d/ntp stop
 update-rc.d ntp disable update-rc.d ntp disable
 +</code>
 +
 +__Bookworm__
 +
 +<code>
 +/etc/init.d/ntpsec stop
 +update-rc.d ntpsec disable
 +</code>
 +
 +<code>
 +systemctl stop ntpd
 +systemctl disable ntpd
 +systemctl mask ntpd
 </code> </code>
  
Line 519: Line 538:
 filegen rawstats   file rawstats   type day enable filegen rawstats   file rawstats   type day enable
  
 +#server ntp.example.com
 broadcastclient broadcastclient
 disable auth disable auth
Line 565: Line 585:
 option is to find other sample devices to test and prefer. option is to find other sample devices to test and prefer.
  
 +The first character of each peer line above is called the ntp tally code.
 +<code>
 +Code  Message         T       Description
 +0     sel_reject              discarded as not valid (TEST10-TEST13)
 +1     sel_falsetick   x       discarded by intersection algorithm
 +2     sel_excess      .       discarded by table overflow (not used)
 +3     sel_outlier     -       discarded by the cluster algorithm
 +4     sel_candidate   +       included by the combine algorithm
 +5     sel_backup      #       backup (more than tos maxclock sources)
 +6     sel_sys.peer    *       system peer
 +7     sel_pps.peer    o       PPS peer (when the prefer peer is valid)
 +</code>
 +
 +==Debug==
 +
 +<code>
 +apt install tcpdump && rehash
 +tcpdump -ni wlan0 port 123 and udp
 +</code>
 ===PTP=== ===PTP===
  
Line 663: Line 702:
 <code> <code>
 apt install linuxptp apt install linuxptp
 +systemctl stop timemaster
 +systemctl disable timemaster
 +systemctl mask timemaster
 </code> </code>
  
-Necessary hardware is not available for further testing at this time.+More later...
 ===Resources=== ===Resources===
  
-[[https://wiki.kewl.org/downloads/QUECTEL/L80-brochure.pdf|L80 GPS overview]]+{{downloads:QUECTEL:L80-brochure.pdf|L80 GPS overview}}
  
-[[https://wiki.kewl.org/downloads/QUECTEL/L80-hardware.pdf|L80 GPS hardware]]+{{downloads:QUECTEL:L80-hardware.pdf|L80 GPS hardware}}
  
-[[https://wiki.kewl.org/downloads/QUECTEL/L80-protocol.pdf|L80 GPS protocol]]+{{downloads:QUECTEL:L80-protocol.pdf|L80 GPS protocol}}
  
 [[https://sourceforge.net/projects/ptpd/|PTPD version 2 on SourceForge]] [[https://sourceforge.net/projects/ptpd/|PTPD version 2 on SourceForge]]
  
 [[http://linuxptp.sourceforge.net/|Linux PTP]] [[http://linuxptp.sourceforge.net/|Linux PTP]]