open source driving agent
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from cereal import car
from openpilot.selfdrive.car import DT_CTRL
from openpilot.selfdrive.car.interfaces import MAX_CTRL_SPEED
from openpilot.selfdrive.car.volkswagen.values import CarControllerParams as VWCarControllerParams
from openpilot.selfdrive.car.hyundai.interface import ENABLE_BUTTONS as HYUNDAI_ENABLE_BUTTONS
from openpilot.selfdrive.controls.lib.events import Events
ButtonType = car.CarState.ButtonEvent.Type
GearShifter = car.CarState.GearShifter
EventName = car.CarEvent.EventName
NetworkLocation = car.CarParams.NetworkLocation
class CarSpecificEvents:
def __init__(self, CP: car.CarParams):
self.CP = CP
self.steering_unpressed = 0
self.low_speed_alert = False
self.no_steer_warning = False
self.silent_steer_warning = True
def update(self, CS, CS_prev, CC, CC_prev):
if self.CP.carName in ('body', 'mock'):
events = Events()
elif self.CP.carName in ('tesla', 'subaru'):
events = self.create_common_events(CS.out, CS_prev)
elif self.CP.carName == 'ford':
events = self.create_common_events(CS.out, CS_prev, extra_gears=[GearShifter.manumatic])
elif self.CP.carName == 'nissan':
events = self.create_common_events(CS.out, CS_prev, extra_gears=[GearShifter.brake])
if CS.lkas_enabled:
events.add(EventName.invalidLkasSetting)
elif self.CP.carName == 'mazda':
events = self.create_common_events(CS.out, CS_prev)
if CS.lkas_disabled:
events.add(EventName.lkasDisabled)
elif CS.low_speed_alert:
events.add(EventName.belowSteerSpeed)
elif self.CP.carName == 'chrysler':
events = self.create_common_events(CS.out, CS_prev, extra_gears=[GearShifter.low])
# Low speed steer alert hysteresis logic
if self.CP.minSteerSpeed > 0. and CS.out.vEgo < (self.CP.minSteerSpeed + 0.5):
self.low_speed_alert = True
elif CS.out.vEgo > (self.CP.minSteerSpeed + 1.):
self.low_speed_alert = False
if self.low_speed_alert:
events.add(EventName.belowSteerSpeed)
elif self.CP.carName == 'honda':
events = self.create_common_events(CS.out, CS_prev, pcm_enable=False)
if self.CP.pcmCruise and CS.out.vEgo < self.CP.minEnableSpeed:
events.add(EventName.belowEngageSpeed)
if self.CP.pcmCruise:
# we engage when pcm is active (rising edge)
if CS.out.cruiseState.enabled and not CS_prev.cruiseState.enabled:
events.add(EventName.pcmEnable)
elif not CS.out.cruiseState.enabled and (CC_prev.actuators.accel >= 0. or not self.CP.openpilotLongitudinalControl):
# it can happen that car cruise disables while comma system is enabled: need to
# keep braking if needed or if the speed is very low
if CS.out.vEgo < self.CP.minEnableSpeed + 2.:
# non loud alert if cruise disables below 25mph as expected (+ a little margin)
events.add(EventName.speedTooLow)
else:
events.add(EventName.cruiseDisabled)
if self.CP.minEnableSpeed > 0 and CS.out.vEgo < 0.001:
events.add(EventName.manualRestart)
elif self.CP.carName == 'toyota':
events = self.create_common_events(CS.out, CS_prev)
if self.CP.openpilotLongitudinalControl:
if CS.out.cruiseState.standstill and not CS.out.brakePressed:
events.add(EventName.resumeRequired)
if CS.low_speed_lockout:
events.add(EventName.lowSpeedLockout)
if CS.out.vEgo < self.CP.minEnableSpeed:
events.add(EventName.belowEngageSpeed)
if CC_prev.actuators.accel > 0.3:
# some margin on the actuator to not false trigger cancellation while stopping
events.add(EventName.speedTooLow)
if CS.out.vEgo < 0.001:
# while in standstill, send a user alert
events.add(EventName.manualRestart)
elif self.CP.carName == 'gm':
# The ECM allows enabling on falling edge of set, but only rising edge of resume
events = self.create_common_events(CS.out, CS_prev, extra_gears=[GearShifter.sport, GearShifter.low,
GearShifter.eco, GearShifter.manumatic],
pcm_enable=self.CP.pcmCruise, enable_buttons=(ButtonType.decelCruise,))
if not self.CP.pcmCruise:
if any(b.type == ButtonType.accelCruise and b.pressed for b in CS.out.buttonEvents):
events.add(EventName.buttonEnable)
# Enabling at a standstill with brake is allowed
# TODO: verify 17 Volt can enable for the first time at a stop and allow for all GMs
below_min_enable_speed = CS.out.vEgo < self.CP.minEnableSpeed or CS.moving_backward
if below_min_enable_speed and not (CS.out.standstill and CS.out.brake >= 20 and
self.CP.networkLocation == NetworkLocation.fwdCamera):
events.add(EventName.belowEngageSpeed)
if CS.out.cruiseState.standstill:
events.add(EventName.resumeRequired)
if CS.out.vEgo < self.CP.minSteerSpeed:
events.add(EventName.belowSteerSpeed)
elif self.CP.carName == 'volkswagen':
events = self.create_common_events(CS.out, CS_prev, extra_gears=[GearShifter.eco, GearShifter.sport, GearShifter.manumatic],
pcm_enable=not self.CP.openpilotLongitudinalControl,
enable_buttons=(ButtonType.setCruise, ButtonType.resumeCruise))
# Low speed steer alert hysteresis logic
if (self.CP.minSteerSpeed - 1e-3) > VWCarControllerParams.DEFAULT_MIN_STEER_SPEED and CS.out.vEgo < (self.CP.minSteerSpeed + 1.):
self.low_speed_alert = True
elif CS.out.vEgo > (self.CP.minSteerSpeed + 2.):
self.low_speed_alert = False
if self.low_speed_alert:
events.add(EventName.belowSteerSpeed)
if self.CP.openpilotLongitudinalControl:
if CS.out.vEgo < self.CP.minEnableSpeed + 0.5:
events.add(EventName.belowEngageSpeed)
if CC_prev.enabled and CS.out.vEgo < self.CP.minEnableSpeed:
events.add(EventName.speedTooLow)
if CC.eps_timer_soft_disable_alert:
events.add(EventName.steerTimeLimit)
elif self.CP.carName == 'hyundai':
# On some newer model years, the CANCEL button acts as a pause/resume button based on the PCM state
# To avoid re-engaging when openpilot cancels, check user engagement intention via buttons
# Main button also can trigger an engagement on these cars
allow_enable = any(btn in HYUNDAI_ENABLE_BUTTONS for btn in CS.cruise_buttons) or any(CS.main_buttons)
events = self.create_common_events(CS.out, CS_prev, pcm_enable=self.CP.pcmCruise, allow_enable=allow_enable)
# low speed steer alert hysteresis logic (only for cars with steer cut off above 10 m/s)
if CS.out.vEgo < (self.CP.minSteerSpeed + 2.) and self.CP.minSteerSpeed > 10.:
self.low_speed_alert = True
if CS.out.vEgo > (self.CP.minSteerSpeed + 4.):
self.low_speed_alert = False
if self.low_speed_alert:
events.add(EventName.belowSteerSpeed)
else:
raise ValueError(f"Unsupported car: {self.CP.carName}")
return events
def create_common_events(self, CS, CS_prev, extra_gears=None, pcm_enable=True, allow_enable=True,
enable_buttons=(ButtonType.accelCruise, ButtonType.decelCruise)):
events = Events()
if CS.doorOpen:
events.add(EventName.doorOpen)
if CS.seatbeltUnlatched:
events.add(EventName.seatbeltNotLatched)
if CS.gearShifter != GearShifter.drive and (extra_gears is None or
CS.gearShifter not in extra_gears):
events.add(EventName.wrongGear)
if CS.gearShifter == GearShifter.reverse:
events.add(EventName.reverseGear)
if not CS.cruiseState.available:
events.add(EventName.wrongCarMode)
if CS.espDisabled:
events.add(EventName.espDisabled)
if CS.espActive:
events.add(EventName.espActive)
if CS.stockFcw:
events.add(EventName.stockFcw)
if CS.stockAeb:
events.add(EventName.stockAeb)
if CS.vEgo > MAX_CTRL_SPEED:
events.add(EventName.speedTooHigh)
if CS.cruiseState.nonAdaptive:
events.add(EventName.wrongCruiseMode)
if CS.brakeHoldActive and self.CP.openpilotLongitudinalControl:
events.add(EventName.brakeHold)
if CS.parkingBrake:
events.add(EventName.parkBrake)
if CS.accFaulted:
events.add(EventName.accFaulted)
if CS.steeringPressed:
events.add(EventName.steerOverride)
if CS.brakePressed and CS.standstill:
events.add(EventName.preEnableStandstill)
if CS.gasPressed:
events.add(EventName.gasPressedOverride)
if CS.vehicleSensorsInvalid:
events.add(EventName.vehicleSensorsInvalid)
# Handle button presses
for b in CS.buttonEvents:
# Enable OP long on falling edge of enable buttons (defaults to accelCruise and decelCruise, overridable per-port)
if not self.CP.pcmCruise and (b.type in enable_buttons and not b.pressed):
events.add(EventName.buttonEnable)
# Disable on rising and falling edge of cancel for both stock and OP long
if b.type == ButtonType.cancel:
events.add(EventName.buttonCancel)
# Handle permanent and temporary steering faults
self.steering_unpressed = 0 if CS.steeringPressed else self.steering_unpressed + 1
if CS.steerFaultTemporary:
if CS.steeringPressed and (not CS_prev.steerFaultTemporary or self.no_steer_warning):
self.no_steer_warning = True
else:
self.no_steer_warning = False
# if the user overrode recently, show a less harsh alert
if self.silent_steer_warning or CS.standstill or self.steering_unpressed < int(1.5 / DT_CTRL):
self.silent_steer_warning = True
events.add(EventName.steerTempUnavailableSilent)
else:
events.add(EventName.steerTempUnavailable)
else:
self.no_steer_warning = False
self.silent_steer_warning = False
if CS.steerFaultPermanent:
events.add(EventName.steerUnavailable)
# we engage when pcm is active (rising edge)
# enabling can optionally be blocked by the car interface
if pcm_enable:
if CS.cruiseState.enabled and not CS_prev.cruiseState.enabled and allow_enable:
events.add(EventName.pcmEnable)
elif not CS.cruiseState.enabled:
events.add(EventName.pcmDisable)
return events