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firmware/qa
Oleksandr ShyshatskyiandClaude Opus 5 bf7d0f7e06 The printer has no clock and nothing was setting it
There is no RTC and no battery, so every boot starts at whatever the
kernel was built with and stays there: job timestamps, log ordering and
certificate validity are all wrong on a machine that has been unplugged.
Nothing on the stock rootfs could fix it -- FlashForge's busybox is
v1.31.1 built without the ntpd applet, and its rdate speaks RFC 868.

anvil-sntpd is troglobit's sntpd, a fork of Doolittle's ntpclient: one
small binary, servers and interval on the command line, so there is no
config file, no privsep user and no chroot to place on a read-only
rootfs. It ships $MODDIR/sbin/sntpd and nothing else.

A LONGRUN, NOT A HOOK ON THE WIFI ONESHOT. That oneshot runs once, at
boot, and returns before wlan0 has associated -- so a sync hung off its
end would fire too early, never retry, and never fire at all for the
owner who joins a network from the HelixScreen panel an hour later. And
with no RTC a clock is not set once but maintained. sntpd keeps its
schedule with the network down instead of exiting, which is what lets
this service need no wifi dependency -- just as well, since nothing may
depend on that oneshot.

The poll interval is 300 rather than upstream's 600 because it is also
the ceiling on the down-network retry backoff, and so bounds how long a
printer that joined wifi late keeps the wrong time.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0149y4iyLpEwYKh2PS4fmf4u
2026-08-30 16:03:55 +03:00
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