Differences
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Both sides previous revisionPrevious revisionNext revision | Previous revision | ||
tools:time [2022/08/22 16:29] – [NTP] darron | tools:time [2024/07/10 12:12] (current) – [Resources] darron | ||
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</ | </ | ||
+ | NB ntpq and ntptime are part of [[tools: | ||
+ | |||
+ | |||
===PPS=== | ===PPS=== | ||
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__systemd__ | __systemd__ | ||
- | systemd hijacks the GPSD socket so you will need to try a few things | + | systemd hijacks the GPSD socket |
to resolve this. | to resolve this. | ||
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< | < | ||
apt install ntp ntpdate | apt install ntp ntpdate | ||
+ | </ | ||
+ | |||
+ | < | ||
/ | / | ||
update-rc.d ntp disable | update-rc.d ntp disable | ||
+ | </ | ||
+ | |||
+ | __Bookworm__ | ||
+ | |||
+ | < | ||
+ | / | ||
+ | update-rc.d ntpsec disable | ||
+ | </ | ||
+ | |||
+ | < | ||
+ | systemctl stop ntpd | ||
+ | systemctl disable ntpd | ||
+ | systemctl mask ntpd | ||
</ | </ | ||
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</ | </ | ||
+ | ==Debug== | ||
+ | |||
+ | < | ||
+ | apt install tcpdump && rehash | ||
+ | tcpdump -ni wlan0 port 123 and udp | ||
+ | </ | ||
===PTP=== | ===PTP=== | ||
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< | < | ||
apt install linuxptp | apt install linuxptp | ||
+ | systemctl stop timemaster | ||
+ | systemctl disable timemaster | ||
+ | systemctl mask timemaster | ||
</ | </ | ||
- | Necessary hardware is not available for further testing at this time. | + | More later... |
===Resources=== | ===Resources=== | ||
- | [[https:// | + | {{downloads:QUECTEL:L80-brochure.pdf|L80 GPS overview}} |
- | [[https:// | + | {{downloads:QUECTEL:L80-hardware.pdf|L80 GPS hardware}} |
- | [[https:// | + | {{downloads:QUECTEL:L80-protocol.pdf|L80 GPS protocol}} |
[[https:// | [[https:// | ||
[[http:// | [[http:// |