139 lines
5.5 KiB
Python
139 lines
5.5 KiB
Python
#!/usr/bin/env python3
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from cereal import car
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from selfdrive.config import Conversions as CV
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from selfdrive.controls.lib.drive_helpers import EventTypes as ET, create_event
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from selfdrive.car.hyundai.values import Ecu, ECU_FINGERPRINT, CAR, get_hud_alerts, FINGERPRINTS
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from selfdrive.car import STD_CARGO_KG, scale_rot_inertia, scale_tire_stiffness, is_ecu_disconnected, gen_empty_fingerprint
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from selfdrive.car.interfaces import CarInterfaceBase
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class CarInterface(CarInterfaceBase):
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@staticmethod
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def compute_gb(accel, speed):
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return float(accel) / 3.0
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@staticmethod
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def get_params(candidate, fingerprint=gen_empty_fingerprint(), has_relay=False, car_fw=[]):
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ret = CarInterfaceBase.get_std_params(candidate, fingerprint, has_relay)
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ret.carName = "hyundai"
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ret.safetyModel = car.CarParams.SafetyModel.hyundai
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ret.radarOffCan = True
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ret.steerActuatorDelay = 0.1 # Default delay
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ret.steerRateCost = 0.5
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ret.steerLimitTimer = 0.4
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tire_stiffness_factor = 1.
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if candidate == CAR.SANTA_FE:
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ret.lateralTuning.pid.kf = 0.00005
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ret.mass = 3982. * CV.LB_TO_KG + STD_CARGO_KG
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ret.wheelbase = 2.766
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# Values from optimizer
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ret.steerRatio = 16.55 # 13.8 is spec end-to-end
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tire_stiffness_factor = 0.82
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ret.lateralTuning.pid.kiBP, ret.lateralTuning.pid.kpBP = [[9., 22.], [9., 22.]]
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ret.lateralTuning.pid.kpV, ret.lateralTuning.pid.kiV = [[0.2, 0.35], [0.05, 0.09]]
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ret.minSteerSpeed = 0.
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elif candidate == CAR.KIA_SORENTO:
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ret.lateralTuning.pid.kf = 0.00005
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ret.mass = 1985. + STD_CARGO_KG
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ret.wheelbase = 2.78
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ret.steerRatio = 14.4 * 1.1 # 10% higher at the center seems reasonable
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ret.lateralTuning.pid.kiBP, ret.lateralTuning.pid.kpBP = [[0.], [0.]]
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ret.lateralTuning.pid.kpV, ret.lateralTuning.pid.kiV = [[0.25], [0.05]]
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ret.minSteerSpeed = 0.
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elif candidate == CAR.ELANTRA:
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ret.lateralTuning.pid.kf = 0.00006
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ret.mass = 1275. + STD_CARGO_KG
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ret.wheelbase = 2.7
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ret.steerRatio = 13.73 #Spec
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tire_stiffness_factor = 0.385
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ret.lateralTuning.pid.kiBP, ret.lateralTuning.pid.kpBP = [[0.], [0.]]
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ret.lateralTuning.pid.kpV, ret.lateralTuning.pid.kiV = [[0.25], [0.05]]
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ret.minSteerSpeed = 32 * CV.MPH_TO_MS
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elif candidate == CAR.GENESIS:
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ret.lateralTuning.pid.kf = 0.00005
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ret.mass = 2060. + STD_CARGO_KG
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ret.wheelbase = 3.01
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ret.steerRatio = 16.5
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ret.lateralTuning.pid.kiBP, ret.lateralTuning.pid.kpBP = [[0.], [0.]]
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ret.lateralTuning.pid.kpV, ret.lateralTuning.pid.kiV = [[0.16], [0.01]]
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ret.minSteerSpeed = 35 * CV.MPH_TO_MS
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elif candidate == CAR.KIA_OPTIMA:
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ret.lateralTuning.pid.kf = 0.00005
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ret.mass = 3558. * CV.LB_TO_KG
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ret.wheelbase = 2.80
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ret.steerRatio = 13.75
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tire_stiffness_factor = 0.5
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ret.lateralTuning.pid.kiBP, ret.lateralTuning.pid.kpBP = [[0.], [0.]]
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ret.lateralTuning.pid.kpV, ret.lateralTuning.pid.kiV = [[0.25], [0.05]]
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elif candidate == CAR.KIA_STINGER:
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ret.lateralTuning.pid.kf = 0.00005
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ret.mass = 1825. + STD_CARGO_KG
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ret.wheelbase = 2.78
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ret.steerRatio = 14.4 * 1.15 # 15% higher at the center seems reasonable
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ret.lateralTuning.pid.kiBP, ret.lateralTuning.pid.kpBP = [[0.], [0.]]
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ret.lateralTuning.pid.kpV, ret.lateralTuning.pid.kiV = [[0.25], [0.05]]
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ret.minSteerSpeed = 0.
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ret.centerToFront = ret.wheelbase * 0.4
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# TODO: get actual value, for now starting with reasonable value for
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# civic and scaling by mass and wheelbase
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ret.rotationalInertia = scale_rot_inertia(ret.mass, ret.wheelbase)
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# TODO: start from empirically derived lateral slip stiffness for the civic and scale by
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# mass and CG position, so all cars will have approximately similar dyn behaviors
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ret.tireStiffnessFront, ret.tireStiffnessRear = scale_tire_stiffness(ret.mass, ret.wheelbase, ret.centerToFront,
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tire_stiffness_factor=tire_stiffness_factor)
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ret.enableCamera = is_ecu_disconnected(fingerprint[0], FINGERPRINTS, ECU_FINGERPRINT, candidate, Ecu.fwdCamera) or has_relay
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return ret
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def update(self, c, can_strings):
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self.cp.update_strings(can_strings)
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self.cp_cam.update_strings(can_strings)
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ret = self.CS.update(self.cp, self.cp_cam)
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ret.canValid = self.cp.can_valid and self.cp_cam.can_valid
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# TODO: button presses
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ret.buttonEvents = []
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events = self.create_common_events(ret)
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if ret.cruiseState.enabled and not self.cruise_enabled_prev:
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events.append(create_event('pcmEnable', [ET.ENABLE]))
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elif not ret.cruiseState.enabled:
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events.append(create_event('pcmDisable', [ET.USER_DISABLE]))
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# low speed steer alert hysteresis logic (only for cars with steer cut off above 10 m/s)
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if ret.vEgo < (self.CP.minSteerSpeed + 2.) and self.CP.minSteerSpeed > 10.:
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self.low_speed_alert = True
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if ret.vEgo > (self.CP.minSteerSpeed + 4.):
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self.low_speed_alert = False
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if self.low_speed_alert:
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events.append(create_event('belowSteerSpeed', [ET.WARNING]))
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ret.events = events
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self.gas_pressed_prev = ret.gasPressed
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self.brake_pressed_prev = ret.brakePressed
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self.cruise_enabled_prev = ret.cruiseState.enabled
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self.CS.out = ret.as_reader()
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return self.CS.out
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def apply(self, c):
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hud_alert = get_hud_alerts(c.hudControl.visualAlert)
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can_sends = self.CC.update(c.enabled, self.CS, c.actuators,
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c.cruiseControl.cancel, hud_alert)
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return can_sends
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