Fan control rework (thermald → 4Hz):
- DT_TRML 0.5s → 0.25s (thermald loop + fan PID now at 4Hz)
- New clamp rules based on (gear, cruise_engaged, standstill):
parked → 0-100%
in drive + cruise engaged (any speed) → 30-100%
in drive + cruise off + standstill → 10-100%
in drive + cruise off + moving → 30-100%
- thermald now reads gearShifter (via carState) and controlsState.enabled,
passes them to fan_controller.update()
- Removed BENCH_MODE special case — new rules cover bench automatically
- Removed ignition-based branches — gear is the correct signal
System health overlay:
- Subscribed UI to peripheralState so we can read fanSpeedRpm
- Added FAN row: actual fan% (RPM / 65) to sit alongside LAG/DROP/TEMP/CPU/MEM.
Shows the real fan output vs. what the PID is asking for.
Migrate hot signals from paramsMemory to cereal (frogpilotCarControl):
- Added latRequested @3 and noLatLaneChange @4 to FrogPilotCarControl schema
- controlsd sets FPCC.latRequested / FPCC.noLatLaneChange (send-on-change
already gates the IPC)
- modeld reads from sm['frogpilotCarControl'] (added to its subscribers)
instead of paramsMemory (saves ~20 file-read syscalls/sec)
- carcontroller reads from frogpilot_variables (set in-process by controlsd)
instead of paramsMemory (saves ~100 file-read syscalls/sec in 100Hz path).
Dropped carcontroller's now-unused Params instance and import.
- UI (ui.cc, onroad.cc) reads from sm['frogpilotCarControl'].noLatLaneChange
- Removed LatRequested and no_lat_lane_change param registrations + defaults
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
create_steering_messages was constructing a new Params("/dev/shm/params")
object and reading no_lat_lane_change on every CAN steering message build
— i.e. 100 allocations + 100 file reads per second. Now the Params
instance lives on CarController, and the value is read once per update()
cycle and passed as a parameter.
Audited all other hyundai CAN-FD integration code for similar patterns:
- carstate.py — already fixed (previous commit)
- carcontroller.py — other Params references are all in commented-out code
- hyundaicanfd.py::create_buttons_alt — dead code (early return), so the
Params read there never executes; left as-is
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
