import copy
from cereal import car
from openpilot.common.conversions import Conversions as CV
from openpilot.common.numpy_fast import mean
from opendbc.can.can_define import CANDefine
from opendbc.can.parser import CANParser
from openpilot.selfdrive.car.interfaces import CarStateBase
from openpilot.selfdrive.car.gm.values import DBC, AccState, CanBus, STEER_THRESHOLD
TransmissionType = car.CarParams.TransmissionType
NetworkLocation = car.CarParams.NetworkLocation
STANDSTILL_THRESHOLD = 10 * 0.0311 * CV.KPH_TO_MS
[docs]
class CarState(CarStateBase):
def __init__(self, CP):
super().__init__(CP)
can_define = CANDefine(DBC[CP.carFingerprint]["pt"])
self.shifter_values = can_define.dv["ECMPRDNL2"]["PRNDL2"]
self.cluster_speed_hyst_gap = CV.KPH_TO_MS / 2.
self.cluster_min_speed = CV.KPH_TO_MS / 2.
self.loopback_lka_steering_cmd_updated = False
self.loopback_lka_steering_cmd_ts_nanos = 0
self.pt_lka_steering_cmd_counter = 0
self.cam_lka_steering_cmd_counter = 0
self.buttons_counter = 0
self.prev_distance_button = 0
self.distance_button = 0
[docs]
def update(self, pt_cp, cam_cp, loopback_cp):
ret = car.CarState.new_message()
self.prev_cruise_buttons = self.cruise_buttons
self.prev_distance_button = self.distance_button
self.cruise_buttons = pt_cp.vl["ASCMSteeringButton"]["ACCButtons"]
self.distance_button = pt_cp.vl["ASCMSteeringButton"]["DistanceButton"]
self.buttons_counter = pt_cp.vl["ASCMSteeringButton"]["RollingCounter"]
self.pscm_status = copy.copy(pt_cp.vl["PSCMStatus"])
# This is to avoid a fault where you engage while still moving backwards after shifting to D.
# An Equinox has been seen with an unsupported status (3), so only check if either wheel is in reverse (2)
self.moving_backward = (pt_cp.vl["EBCMWheelSpdRear"]["RLWheelDir"] == 2) or (pt_cp.vl["EBCMWheelSpdRear"]["RRWheelDir"] == 2)
# Variables used for avoiding LKAS faults
self.loopback_lka_steering_cmd_updated = len(loopback_cp.vl_all["ASCMLKASteeringCmd"]["RollingCounter"]) > 0
if self.loopback_lka_steering_cmd_updated:
self.loopback_lka_steering_cmd_ts_nanos = loopback_cp.ts_nanos["ASCMLKASteeringCmd"]["RollingCounter"]
if self.CP.networkLocation == NetworkLocation.fwdCamera:
self.pt_lka_steering_cmd_counter = pt_cp.vl["ASCMLKASteeringCmd"]["RollingCounter"]
self.cam_lka_steering_cmd_counter = cam_cp.vl["ASCMLKASteeringCmd"]["RollingCounter"]
ret.wheelSpeeds = self.get_wheel_speeds(
pt_cp.vl["EBCMWheelSpdFront"]["FLWheelSpd"],
pt_cp.vl["EBCMWheelSpdFront"]["FRWheelSpd"],
pt_cp.vl["EBCMWheelSpdRear"]["RLWheelSpd"],
pt_cp.vl["EBCMWheelSpdRear"]["RRWheelSpd"],
)
ret.vEgoRaw = mean([ret.wheelSpeeds.fl, ret.wheelSpeeds.fr, ret.wheelSpeeds.rl, ret.wheelSpeeds.rr])
ret.vEgo, ret.aEgo = self.update_speed_kf(ret.vEgoRaw)
# sample rear wheel speeds, standstill=True if ECM allows engagement with brake
ret.standstill = ret.wheelSpeeds.rl <= STANDSTILL_THRESHOLD and ret.wheelSpeeds.rr <= STANDSTILL_THRESHOLD
if pt_cp.vl["ECMPRDNL2"]["ManualMode"] == 1:
ret.gearShifter = self.parse_gear_shifter("T")
else:
ret.gearShifter = self.parse_gear_shifter(self.shifter_values.get(pt_cp.vl["ECMPRDNL2"]["PRNDL2"], None))
ret.brake = pt_cp.vl["ECMAcceleratorPos"]["BrakePedalPos"]
if self.CP.networkLocation == NetworkLocation.fwdCamera:
ret.brakePressed = pt_cp.vl["ECMEngineStatus"]["BrakePressed"] != 0
else:
# Some Volt 2016-17 have loose brake pedal push rod retainers which causes the ECM to believe
# that the brake is being intermittently pressed without user interaction.
# To avoid a cruise fault we need to use a conservative brake position threshold
# https://static.nhtsa.gov/odi/tsbs/2017/MC-10137629-9999.pdf
ret.brakePressed = ret.brake >= 8
# Regen braking is braking
if self.CP.transmissionType == TransmissionType.direct:
ret.regenBraking = pt_cp.vl["EBCMRegenPaddle"]["RegenPaddle"] != 0
ret.gas = pt_cp.vl["AcceleratorPedal2"]["AcceleratorPedal2"] / 254.
ret.gasPressed = ret.gas > 1e-5
ret.steeringAngleDeg = pt_cp.vl["PSCMSteeringAngle"]["SteeringWheelAngle"]
ret.steeringRateDeg = pt_cp.vl["PSCMSteeringAngle"]["SteeringWheelRate"]
ret.steeringTorque = pt_cp.vl["PSCMStatus"]["LKADriverAppldTrq"]
ret.steeringTorqueEps = pt_cp.vl["PSCMStatus"]["LKATorqueDelivered"]
ret.steeringPressed = abs(ret.steeringTorque) > STEER_THRESHOLD
# 0 inactive, 1 active, 2 temporarily limited, 3 failed
self.lkas_status = pt_cp.vl["PSCMStatus"]["LKATorqueDeliveredStatus"]
ret.steerFaultTemporary = self.lkas_status == 2
ret.steerFaultPermanent = self.lkas_status == 3
# 1 - open, 0 - closed
ret.doorOpen = (pt_cp.vl["BCMDoorBeltStatus"]["FrontLeftDoor"] == 1 or
pt_cp.vl["BCMDoorBeltStatus"]["FrontRightDoor"] == 1 or
pt_cp.vl["BCMDoorBeltStatus"]["RearLeftDoor"] == 1 or
pt_cp.vl["BCMDoorBeltStatus"]["RearRightDoor"] == 1)
# 1 - latched
ret.seatbeltUnlatched = pt_cp.vl["BCMDoorBeltStatus"]["LeftSeatBelt"] == 0
ret.leftBlinker = pt_cp.vl["BCMTurnSignals"]["TurnSignals"] == 1
ret.rightBlinker = pt_cp.vl["BCMTurnSignals"]["TurnSignals"] == 2
ret.parkingBrake = pt_cp.vl["BCMGeneralPlatformStatus"]["ParkBrakeSwActive"] == 1
ret.cruiseState.available = pt_cp.vl["ECMEngineStatus"]["CruiseMainOn"] != 0
ret.espDisabled = pt_cp.vl["ESPStatus"]["TractionControlOn"] != 1
ret.accFaulted = (pt_cp.vl["AcceleratorPedal2"]["CruiseState"] == AccState.FAULTED or
pt_cp.vl["EBCMFrictionBrakeStatus"]["FrictionBrakeUnavailable"] == 1)
ret.cruiseState.enabled = pt_cp.vl["AcceleratorPedal2"]["CruiseState"] != AccState.OFF
ret.cruiseState.standstill = pt_cp.vl["AcceleratorPedal2"]["CruiseState"] == AccState.STANDSTILL
if self.CP.networkLocation == NetworkLocation.fwdCamera:
ret.cruiseState.speed = cam_cp.vl["ASCMActiveCruiseControlStatus"]["ACCSpeedSetpoint"] * CV.KPH_TO_MS
ret.stockAeb = cam_cp.vl["AEBCmd"]["AEBCmdActive"] != 0
# openpilot controls nonAdaptive when not pcmCruise
if self.CP.pcmCruise:
ret.cruiseState.nonAdaptive = cam_cp.vl["ASCMActiveCruiseControlStatus"]["ACCCruiseState"] not in (2, 3)
if self.CP.enableBsm:
ret.leftBlindspot = pt_cp.vl["BCMBlindSpotMonitor"]["LeftBSM"] == 1
ret.rightBlindspot = pt_cp.vl["BCMBlindSpotMonitor"]["RightBSM"] == 1
return ret
[docs]
@staticmethod
def get_cam_can_parser(CP):
messages = []
if CP.networkLocation == NetworkLocation.fwdCamera:
messages += [
("AEBCmd", 10),
("ASCMLKASteeringCmd", 10),
("ASCMActiveCruiseControlStatus", 25),
]
return CANParser(DBC[CP.carFingerprint]["pt"], messages, CanBus.CAMERA)
[docs]
@staticmethod
def get_can_parser(CP):
messages = [
("BCMTurnSignals", 1),
("ECMPRDNL2", 10),
("PSCMStatus", 10),
("ESPStatus", 10),
("BCMDoorBeltStatus", 10),
("BCMGeneralPlatformStatus", 10),
("EBCMWheelSpdFront", 20),
("EBCMWheelSpdRear", 20),
("EBCMFrictionBrakeStatus", 20),
("AcceleratorPedal2", 33),
("ASCMSteeringButton", 33),
("ECMEngineStatus", 100),
("PSCMSteeringAngle", 100),
("ECMAcceleratorPos", 80),
]
if CP.enableBsm:
messages.append(("BCMBlindSpotMonitor", 10))
# Used to read back last counter sent to PT by camera
if CP.networkLocation == NetworkLocation.fwdCamera:
messages += [
("ASCMLKASteeringCmd", 0),
]
if CP.transmissionType == TransmissionType.direct:
messages.append(("EBCMRegenPaddle", 50))
return CANParser(DBC[CP.carFingerprint]["pt"], messages, CanBus.POWERTRAIN)
[docs]
@staticmethod
def get_loopback_can_parser(CP):
messages = [
("ASCMLKASteeringCmd", 0),
]
return CANParser(DBC[CP.carFingerprint]["pt"], messages, CanBus.LOOPBACK)