#!/usr/bin/env python3 from cereal import car from selfdrive.config import Conversions as CV from selfdrive.controls.lib.drive_helpers import create_event, EventTypes as ET from selfdrive.controls.lib.vehicle_model import VehicleModel from selfdrive.car.gm.values import DBC, CAR, ECU, ECU_FINGERPRINT, \ SUPERCRUISE_CARS, AccState, FINGERPRINTS from selfdrive.car.gm.carstate import CarState, CruiseButtons, get_powertrain_can_parser from selfdrive.car import STD_CARGO_KG, scale_rot_inertia, scale_tire_stiffness, is_ecu_disconnected, gen_empty_fingerprint from selfdrive.car.interfaces import CarInterfaceBase ButtonType = car.CarState.ButtonEvent.Type class CanBus(CarInterfaceBase): def __init__(self): self.powertrain = 0 self.obstacle = 1 self.chassis = 2 self.sw_gmlan = 3 class CarInterface(CarInterfaceBase): def __init__(self, CP, CarController): self.CP = CP self.frame = 0 self.gas_pressed_prev = False self.brake_pressed_prev = False self.acc_active_prev = 0 # *** init the major players *** canbus = CanBus() self.CS = CarState(CP, canbus) self.VM = VehicleModel(CP) self.pt_cp = get_powertrain_can_parser(CP, canbus) self.ch_cp_dbc_name = DBC[CP.carFingerprint]['chassis'] self.CC = None if CarController is not None: self.CC = CarController(canbus, CP.carFingerprint) @staticmethod def compute_gb(accel, speed): return float(accel) / 4.0 @staticmethod def get_params(candidate, fingerprint=gen_empty_fingerprint(), has_relay=False, car_fw=[]): ret = car.CarParams.new_message() ret.carName = "gm" ret.carFingerprint = candidate ret.isPandaBlack = has_relay ret.enableCruise = False # GM port is considered a community feature, since it disables AEB; # TODO: make a port that uses a car harness and it only intercepts the camera ret.communityFeature = True # Presence of a camera on the object bus is ok. # Have to go to read_only if ASCM is online (ACC-enabled cars), # or camera is on powertrain bus (LKA cars without ACC). ret.enableCamera = is_ecu_disconnected(fingerprint[0], FINGERPRINTS, ECU_FINGERPRINT, candidate, ECU.CAM) or \ has_relay or \ candidate == CAR.CADILLAC_CT6 ret.openpilotLongitudinalControl = ret.enableCamera tire_stiffness_factor = 0.444 # not optimized yet if candidate == CAR.VOLT: # supports stop and go, but initial engage must be above 18mph (which include conservatism) ret.minEnableSpeed = 18 * CV.MPH_TO_MS ret.mass = 1607. + STD_CARGO_KG ret.safetyModel = car.CarParams.SafetyModel.gm ret.wheelbase = 2.69 ret.steerRatio = 15.7 ret.steerRatioRear = 0. ret.centerToFront = ret.wheelbase * 0.4 # wild guess elif candidate == CAR.MALIBU: # supports stop and go, but initial engage must be above 18mph (which include conservatism) ret.minEnableSpeed = 18 * CV.MPH_TO_MS ret.mass = 1496. + STD_CARGO_KG ret.safetyModel = car.CarParams.SafetyModel.gm ret.wheelbase = 2.83 ret.steerRatio = 15.8 ret.steerRatioRear = 0. ret.centerToFront = ret.wheelbase * 0.4 # wild guess elif candidate == CAR.HOLDEN_ASTRA: ret.mass = 1363. + STD_CARGO_KG ret.wheelbase = 2.662 # Remaining parameters copied from Volt for now ret.centerToFront = ret.wheelbase * 0.4 ret.minEnableSpeed = 18 * CV.MPH_TO_MS ret.safetyModel = car.CarParams.SafetyModel.gm ret.steerRatio = 15.7 ret.steerRatioRear = 0. elif candidate == CAR.ACADIA: ret.minEnableSpeed = -1. # engage speed is decided by pcm ret.mass = 4353. * CV.LB_TO_KG + STD_CARGO_KG ret.safetyModel = car.CarParams.SafetyModel.gm ret.wheelbase = 2.86 ret.steerRatio = 14.4 #end to end is 13.46 ret.steerRatioRear = 0. ret.centerToFront = ret.wheelbase * 0.4 elif candidate == CAR.BUICK_REGAL: ret.minEnableSpeed = 18 * CV.MPH_TO_MS ret.mass = 3779. * CV.LB_TO_KG + STD_CARGO_KG # (3849+3708)/2 ret.safetyModel = car.CarParams.SafetyModel.gm ret.wheelbase = 2.83 #111.4 inches in meters ret.steerRatio = 14.4 # guess for tourx ret.steerRatioRear = 0. ret.centerToFront = ret.wheelbase * 0.4 # guess for tourx elif candidate == CAR.CADILLAC_ATS: ret.minEnableSpeed = 18 * CV.MPH_TO_MS ret.mass = 1601. + STD_CARGO_KG ret.safetyModel = car.CarParams.SafetyModel.gm ret.wheelbase = 2.78 ret.steerRatio = 15.3 ret.steerRatioRear = 0. ret.centerToFront = ret.wheelbase * 0.49 elif candidate == CAR.CADILLAC_CT6: # engage speed is decided by pcm ret.minEnableSpeed = -1. ret.mass = 4016. * CV.LB_TO_KG + STD_CARGO_KG ret.safetyModel = car.CarParams.SafetyModel.cadillac ret.wheelbase = 3.11 ret.steerRatio = 14.6 # it's 16.3 without rear active steering ret.steerRatioRear = 0. # TODO: there is RAS on this car! ret.centerToFront = ret.wheelbase * 0.465 # TODO: get actual value, for now starting with reasonable value for # civic and scaling by mass and wheelbase ret.rotationalInertia = scale_rot_inertia(ret.mass, ret.wheelbase) # TODO: start from empirically derived lateral slip stiffness for the civic and scale by # mass and CG position, so all cars will have approximately similar dyn behaviors ret.tireStiffnessFront, ret.tireStiffnessRear = scale_tire_stiffness(ret.mass, ret.wheelbase, ret.centerToFront, tire_stiffness_factor=tire_stiffness_factor) # same tuning for Volt and CT6 for now ret.lateralTuning.pid.kiBP, ret.lateralTuning.pid.kpBP = [[0.], [0.]] ret.lateralTuning.pid.kpV, ret.lateralTuning.pid.kiV = [[0.2], [0.00]] ret.lateralTuning.pid.kf = 0.00004 # full torque for 20 deg at 80mph means 0.00007818594 ret.steerMaxBP = [0.] # m/s ret.steerMaxV = [1.] ret.gasMaxBP = [0.] ret.gasMaxV = [.5] ret.brakeMaxBP = [0.] ret.brakeMaxV = [1.] ret.longitudinalTuning.kpBP = [5., 35.] ret.longitudinalTuning.kpV = [2.4, 1.5] ret.longitudinalTuning.kiBP = [0.] ret.longitudinalTuning.kiV = [0.36] ret.longitudinalTuning.deadzoneBP = [0.] ret.longitudinalTuning.deadzoneV = [0.] ret.stoppingControl = True ret.startAccel = 0.8 ret.steerActuatorDelay = 0.1 # Default delay, not measured yet ret.steerRateCost = 1.0 ret.steerLimitTimer = 0.4 ret.radarTimeStep = 0.0667 # GM radar runs at 15Hz instead of standard 20Hz ret.steerControlType = car.CarParams.SteerControlType.torque return ret # returns a car.CarState def update(self, c, can_strings): self.pt_cp.update_strings(can_strings) self.CS.update(self.pt_cp) # create message ret = car.CarState.new_message() ret.canValid = self.pt_cp.can_valid # speeds ret.vEgo = self.CS.v_ego ret.aEgo = self.CS.a_ego ret.vEgoRaw = self.CS.v_ego_raw ret.yawRate = self.VM.yaw_rate(self.CS.angle_steers * CV.DEG_TO_RAD, self.CS.v_ego) ret.standstill = self.CS.standstill ret.wheelSpeeds.fl = self.CS.v_wheel_fl ret.wheelSpeeds.fr = self.CS.v_wheel_fr ret.wheelSpeeds.rl = self.CS.v_wheel_rl ret.wheelSpeeds.rr = self.CS.v_wheel_rr # gas pedal information. ret.gas = self.CS.pedal_gas / 254.0 ret.gasPressed = self.CS.user_gas_pressed # brake pedal ret.brake = self.CS.user_brake / 0xd0 ret.brakePressed = self.CS.brake_pressed # steering wheel ret.steeringAngle = self.CS.angle_steers # torque and user override. Driver awareness # timer resets when the user uses the steering wheel. ret.steeringPressed = self.CS.steer_override ret.steeringTorque = self.CS.steer_torque_driver ret.steeringRateLimited = self.CC.steer_rate_limited if self.CC is not None else False # cruise state ret.cruiseState.available = bool(self.CS.main_on) cruiseEnabled = self.CS.pcm_acc_status != AccState.OFF ret.cruiseState.enabled = cruiseEnabled ret.cruiseState.standstill = self.CS.pcm_acc_status == 4 ret.leftBlinker = self.CS.left_blinker_on ret.rightBlinker = self.CS.right_blinker_on ret.doorOpen = not self.CS.door_all_closed ret.seatbeltUnlatched = not self.CS.seatbelt ret.gearShifter = self.CS.gear_shifter buttonEvents = [] # blinkers if self.CS.left_blinker_on != self.CS.prev_left_blinker_on: be = car.CarState.ButtonEvent.new_message() be.type = ButtonType.leftBlinker be.pressed = self.CS.left_blinker_on buttonEvents.append(be) if self.CS.right_blinker_on != self.CS.prev_right_blinker_on: be = car.CarState.ButtonEvent.new_message() be.type = ButtonType.rightBlinker be.pressed = self.CS.right_blinker_on buttonEvents.append(be) if self.CS.cruise_buttons != self.CS.prev_cruise_buttons: be = car.CarState.ButtonEvent.new_message() be.type = ButtonType.unknown if self.CS.cruise_buttons != CruiseButtons.UNPRESS: be.pressed = True but = self.CS.cruise_buttons else: be.pressed = False but = self.CS.prev_cruise_buttons if but == CruiseButtons.RES_ACCEL: if not (cruiseEnabled and self.CS.standstill): be.type = ButtonType.accelCruise # Suppress resume button if we're resuming from stop so we don't adjust speed. elif but == CruiseButtons.DECEL_SET: be.type = ButtonType.decelCruise elif but == CruiseButtons.CANCEL: be.type = ButtonType.cancel elif but == CruiseButtons.MAIN: be.type = ButtonType.altButton3 buttonEvents.append(be) ret.buttonEvents = buttonEvents events = [] if self.CS.steer_error: events.append(create_event('steerUnavailable', [ET.NO_ENTRY, ET.IMMEDIATE_DISABLE, ET.PERMANENT])) if self.CS.steer_not_allowed: events.append(create_event('steerTempUnavailable', [ET.NO_ENTRY, ET.WARNING])) if ret.doorOpen: events.append(create_event('doorOpen', [ET.NO_ENTRY, ET.SOFT_DISABLE])) if ret.seatbeltUnlatched: events.append(create_event('seatbeltNotLatched', [ET.NO_ENTRY, ET.SOFT_DISABLE])) if self.CS.car_fingerprint in SUPERCRUISE_CARS: if self.CS.acc_active and not self.acc_active_prev: events.append(create_event('pcmEnable', [ET.ENABLE])) if not self.CS.acc_active: events.append(create_event('pcmDisable', [ET.USER_DISABLE])) else: if self.CS.brake_error: events.append(create_event('brakeUnavailable', [ET.NO_ENTRY, ET.IMMEDIATE_DISABLE, ET.PERMANENT])) if not self.CS.gear_shifter_valid: events.append(create_event('wrongGear', [ET.NO_ENTRY, ET.SOFT_DISABLE])) if self.CS.esp_disabled: events.append(create_event('espDisabled', [ET.NO_ENTRY, ET.SOFT_DISABLE])) if not self.CS.main_on: events.append(create_event('wrongCarMode', [ET.NO_ENTRY, ET.USER_DISABLE])) if self.CS.gear_shifter == 3: events.append(create_event('reverseGear', [ET.NO_ENTRY, ET.IMMEDIATE_DISABLE])) if ret.vEgo < self.CP.minEnableSpeed: events.append(create_event('speedTooLow', [ET.NO_ENTRY])) if self.CS.park_brake: events.append(create_event('parkBrake', [ET.NO_ENTRY, ET.USER_DISABLE])) # disable on pedals rising edge or when brake is pressed and speed isn't zero if (ret.gasPressed and not self.gas_pressed_prev) or \ (ret.brakePressed): # and (not self.brake_pressed_prev or ret.vEgo > 0.001)): events.append(create_event('pedalPressed', [ET.NO_ENTRY, ET.USER_DISABLE])) if ret.gasPressed: events.append(create_event('pedalPressed', [ET.PRE_ENABLE])) if ret.cruiseState.standstill: events.append(create_event('resumeRequired', [ET.WARNING])) if self.CS.pcm_acc_status == AccState.FAULTED: events.append(create_event('controlsFailed', [ET.NO_ENTRY, ET.IMMEDIATE_DISABLE])) # handle button presses for b in ret.buttonEvents: # do enable on both accel and decel buttons if b.type in [ButtonType.accelCruise, ButtonType.decelCruise] and not b.pressed: events.append(create_event('buttonEnable', [ET.ENABLE])) # do disable on button down if b.type == ButtonType.cancel and b.pressed: events.append(create_event('buttonCancel', [ET.USER_DISABLE])) ret.events = events # update previous brake/gas pressed self.acc_active_prev = self.CS.acc_active self.gas_pressed_prev = ret.gasPressed self.brake_pressed_prev = ret.brakePressed # cast to reader so it can't be modified return ret.as_reader() # pass in a car.CarControl # to be called @ 100hz def apply(self, c): hud_v_cruise = c.hudControl.setSpeed if hud_v_cruise > 70: hud_v_cruise = 0 # For Openpilot, "enabled" includes pre-enable. # In GM, PCM faults out if ACC command overlaps user gas. enabled = c.enabled and not self.CS.user_gas_pressed can_sends = self.CC.update(enabled, self.CS, self.frame, \ c.actuators, hud_v_cruise, c.hudControl.lanesVisible, \ c.hudControl.leadVisible, c.hudControl.visualAlert) self.frame += 1 return can_sends