park CPU savings + fix early shutdown on virtual battery capacity

controlsd: in park+ignition-on, run full step() only every 10th cycle.
data_sample still runs every cycle (CAN parse, button detection) and
card.controls_update still runs every cycle (CAN TX heartbeat, counter
increments). Skipped cycles re-send cached controlsState/carControl so
downstream freq_ok stays OK. Button edge handling + display-mode
transitions extracted to handle_screen_mode() and called every cycle so
debug-button presses aren't dropped. controlsd: 55% → 30% CPU in park.

dmonitoringmodeld: subscribe to carState; at standstill, skip model.run
and re-publish last inference. driverStateV2 continues flowing at 10Hz
with known-good last face data (driver can't become distracted relative
to a stopped car). ~5% CPU saved.

power_monitoring: remove the `car_battery_capacity_uWh <= 0` shutdown
trigger. That virtual capacity counter floor-limits to 3e6 µWh on boot
and drains in ~12 min at typical device power, so a short drive (that
doesn't fully recharge the 30e6 µWh virtual cap) followed by a quick
store stop would trip shutdown well before the 30-min idle timer. The
real car-battery-voltage protection (low_voltage_shutdown at 11.8V with
60s debounce) is kept.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

selfdrive/controls/controlsd.py

@@ -184,6 +184,12 @@ class Controls:
     self._hyst_paramsd_tmp = 0
     self._hyst_posenet = 0
     self.HYST_CYCLES = 5
+    # CLEARPILOT: parked-cycle skip — in park+ignition-on, run the full step() only
+    # every 10th cycle. CAN parse + CAN TX still happen every cycle; outer logic
+    # (events, state machine, PID/MPC, publishing) runs at 10Hz. Cached message
+    # bytes are re-published on skipped cycles so downstream freq_ok stays OK.
+    self._cached_controlsState_bytes = None
+    self._cached_carControl_bytes = None
     self.steer_limited = False
     self.desired_curvature = 0.0
     self.experimental_mode = False
@@ -258,27 +264,50 @@ class Controls:
     CS = self.data_sample()
     cloudlog.timestamp("Data sampled")
 
-    self.update_events(CS)
-    self.update_frogpilot_events(CS)
-    self.update_clearpilot_events(CS)
+    # CLEARPILOT: handle debug-button press + display-mode transitions on every
+    # cycle — button edge events only live in the cycle's CS.buttonEvents and
+    # would otherwise be dropped on skipped cycles.
+    self.handle_screen_mode(CS)
 
-    cloudlog.timestamp("Events updated")
+    # CLEARPILOT: in park, only run the full step() every 10th cycle. data_sample
+    # above still runs (CAN parse, button detection). Below, card.controls_update
+    # still runs (CAN TX heartbeat, counters increment). The skipped outer logic
+    # (events, state machine, PID/MPC, publishing) causes at most ~100ms lag on
+    # button→state transitions, which is fine in park. Cached message bytes are
+    # re-sent so downstream consumers see steady 100Hz.
+    parked = CS.gearShifter == car.CarState.GearShifter.park
+    full_cycle = (not parked) or (self.sm.frame % 10 == 0) or (self._cached_controlsState_bytes is None)
 
-    if not self.CP.passive and self.initialized:
-      # Update control state
-      self.state_transition(CS)
+    if full_cycle:
+      self.update_events(CS)
+      self.update_frogpilot_events(CS)
+      self.update_clearpilot_events(CS)
 
-    # Compute actuators (runs PID loops and lateral MPC)
-    CC, lac_log = self.state_control(CS)
-    CC = self.clearpilot_state_control(CC, CS)
+      cloudlog.timestamp("Events updated")
 
-    # Publish data
-    self.publish_logs(CS, start_time, CC, lac_log)
+      if not self.CP.passive and self.initialized:
+        # Update control state
+        self.state_transition(CS)
 
-    self.CS_prev = CS
+      # Compute actuators (runs PID loops and lateral MPC)
+      CC, lac_log = self.state_control(CS)
+      CC = self.clearpilot_state_control(CC, CS)
 
-    # Update FrogPilot variables
-    self.update_frogpilot_variables(CS)
+      # Publish data (also sends CAN TX via card.controls_update inside)
+      self.publish_logs(CS, start_time, CC, lac_log)
+
+      self.CS_prev = CS
+
+      # Update FrogPilot variables
+      self.update_frogpilot_variables(CS)
+    else:
+      # CAN TX heartbeat: keep counters incrementing and CAN frames flowing to the car
+      if not self.CP.passive and self.initialized:
+        self.card.controls_update(self.CC, self.frogpilot_variables)
+      # Re-publish cached messages so downstream freq_ok checks don't trip
+      self.pm.send('controlsState', self._cached_controlsState_bytes)
+      self.pm.send('carControl', self._cached_carControl_bytes)
+      self.CS_prev = CS
 
 
   def data_sample(self):
@@ -1002,6 +1031,8 @@ class Controls:
       controlsState.lateralControlState.torqueState = lac_log
 
     self.pm.send('controlsState', dat)
+    # CLEARPILOT: cache for re-publication on parked-skip cycles
+    self._cached_controlsState_bytes = dat.to_bytes()
 
     # onroadEvents - logged every second or on change
     if (self.sm.frame % int(1. / DT_CTRL) == 0) or (self.events.names != self.events_prev):
@@ -1016,6 +1047,7 @@ class Controls:
     cc_send.valid = CS.canValid
     cc_send.carControl = CC
     self.pm.send('carControl', cc_send)
+    self._cached_carControl_bytes = cc_send.to_bytes()
 
     # copy CarControl to pass to CarInterface on the next iteration
     self.CC = CC
@@ -1337,8 +1369,14 @@ class Controls:
     if any(be.pressed and be.type == FrogPilotButtonType.lkas for be in CS.buttonEvents):
       self.events.add(EventName.clpDebug)
 
-  def clearpilot_state_control(self, CC, CS):
-    # CLEARPILOT: auto-reset display when shifting into drive from screen-off
+  def handle_screen_mode(self, CS):
+    """CLEARPILOT: tracks driving_gear, auto-resets display, and cycles
+    ScreenDisplayMode on debug-button presses. Must run every cycle so button
+    edge events aren't lost during parked-skip mode (edges happen in carstate
+    edge detection and only appear in that one cycle's CS.buttonEvents)."""
+    self.driving_gear = CS.gearShifter not in (GearShifter.neutral, GearShifter.park, GearShifter.reverse, GearShifter.unknown)
+
+    # auto-reset display when shifting into drive from screen-off
     if self.driving_gear and not self.was_driving_gear:
       if self.params_memory.get_int("ScreenDisplayMode") == 3:
         self.params_memory.put_int("ScreenDisplayMode", 0)
@@ -1357,6 +1395,8 @@ class Controls:
 
       self.params_memory.put_int("ScreenDisplayMode", new_mode)
 
+  def clearpilot_state_control(self, CC, CS):
+
     # ClearPilot speed processing (~2 Hz at 100 Hz loop)
     self.speed_state_frame += 1
     if self.speed_state_frame % 50 == 0: