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BRINGUP: fan/thermal control is an operator-mandated laser-on prerequisite

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ScottW514
2026-08-02 17:12:53 -04:00
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@@ -220,6 +220,18 @@ hardware I/O — host testing).
mapping) plus a chain-armed first-light procedure; the hardware mapping) plus a chain-armed first-light procedure; the hardware
verification prerequisites are complete. Interlock-trip recovery verification prerequisites are complete. Interlock-trip recovery
behavior remains to be exercised (non-scope check). behavior remains to be exercised (non-scope check).
- **Additional laser-on prerequisite (operator-mandated
2026-08-02): fan/thermal control must be implemented first** —
air assist + purge (head), exhaust + intake (thermal), and the
coolant loop (water pump, TEC, water-temp monitoring). Factory
run/idle/cooldown values are in the captured pulse headers
(AAid/AArd/AAwd, EFid/EFrd/EFwd, IFid/IFrd/IFwd + CM/CT water
thresholds — see `_RESOURCES/*.info` and the gfutilities
settings map); kernel interfaces exist under
/sys/glowforge/head and /sys/glowforge/thermal. Map into the
driver as job-state-driven config (run at cycle start, cooldown
after, idle thereafter) like the factory's
`_config_from_pulse` scheme.
- **Interlock readback semantics cross-check: OPEN** (see - **Interlock readback semantics cross-check: OPEN** (see
factory-laser-safety-readbacks notes). factory-laser-safety-readbacks notes).
3. **Homing**: X/Y home switch GPIOs exist in the cnc pin map (unused so 3. **Homing**: X/Y home switch GPIOs exist in the cnc pin map (unused so