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thermal: watch NVMe/RP1 temps, fan stall, and undervoltage on the Pi 5

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van-thermal grows sensor kinds beyond plain temperatures: "fan" alerts when
pwmfan is commanded on (pwm > 0) but reads 0 RPM (warn on first sample, crit
if it persists — 0 RPM with pwm 0 is just the firmware idling a cool SoC),
and "undervolt" goes crit on the live rpi_volt alarm plus a sticky warn off
the firmware's latched since-boot bit, so dips shorter than the 10s sample
interval still surface once. All kinds share the existing hysteresis /
journal / Pushover machinery (fan 🌀, undervolt ⚡).

Config adds nvme Composite (65/70), rp1_adc (80/85 — the RP1 die drives all
USB/eth I/O), fan, and undervolt to the existing cpu sensor. The CSV logger
now derives per-kind columns and self-rotates when the header changes; the
Cockpit Temps card renders RPM + pwm duty and undervoltage state alongside
the temperatures.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This commit is contained in:
Andreas Wrede
2026-07-12 06:41:17 -04:00
co-authored by Claude Fable 5
parent 6fe683000d
commit 2da97d26f4
4 changed files with 194 additions and 36 deletions
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power/van-thermal.service
+1 -1
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@@ -1,5 +1,5 @@
[Unit]
Description=Temperature monitor (CPU + NVMe) for the campervan router
Description=Thermal + health monitor (temps, fan, undervoltage) for the campervan router
# Order after network-online so a boot-time threshold crossing (common: the Pi
# boots hot) can actually reach Pushover — the very first sample fires within
# seconds of start. If no WAN comes up, wait-online times out and we start anyway.