openpilot is an open source driver assistance system. openpilot performs the functions of Automated Lane Centering and Adaptive Cruise Control for over 200 supported car makes and models.
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import copy
from cereal import car
from opendbc.can.can_define import CANDefine
from selfdrive.car.interfaces import CarStateBase
from selfdrive.config import Conversions as CV
from opendbc.can.parser import CANParser
from selfdrive.car.nissan.values import DBC
class CarState(CarStateBase):
def __init__(self, CP):
super().__init__(CP)
can_define = CANDefine(DBC[CP.carFingerprint]['pt'])
self.shifter_values = can_define.dv["GEARBOX"]["GEAR_SHIFTER"]
def update(self, cp, cp_adas, cp_cam):
ret = car.CarState.new_message()
ret.gas = cp.vl["Throttle"]["ThrottlePedal"]
ret.gasPressed = bool(ret.gas)
ret.brakePressed = bool(cp.vl["DoorsLights"]["USER_BRAKE_PRESSED"])
ret.brakeLights = bool(cp.vl["DoorsLights"]["BRAKE_LIGHT"])
ret.wheelSpeeds.fl = cp.vl["WheelspeedFront"]["FL"] * CV.KPH_TO_MS
ret.wheelSpeeds.fr = cp.vl["WheelspeedFront"]["FR"] * CV.KPH_TO_MS
ret.wheelSpeeds.rl = cp.vl["WheelspeedRear"]["RL"] * CV.KPH_TO_MS
ret.wheelSpeeds.rr = cp.vl["WheelspeedRear"]["RR"] * CV.KPH_TO_MS
ret.vEgoRaw = (ret.wheelSpeeds.fl + ret.wheelSpeeds.fr + ret.wheelSpeeds.rl + ret.wheelSpeeds.rr) / 4.
# Kalman filter, even though Subaru raw wheel speed is heaviliy filtered by default
ret.vEgo, ret.aEgo = self.update_speed_kf(ret.vEgoRaw)
ret.standstill = ret.vEgoRaw < 0.01
can_gear = int(cp.vl["GEARBOX"]["GEAR_SHIFTER"])
ret.gearShifter = self.parse_gear_shifter(self.shifter_values.get(can_gear, None))
ret.leftBlinker = bool(cp.vl["Lights"]["LEFT_BLINKER"])
ret.rightBlinker = bool(cp.vl["Lights"]["RIGHT_BLINKER"])
ret.seatbeltUnlatched = cp.vl["_SEATBELT"]["DRIVERS_SEATBELT"] == 0
ret.cruiseState.enabled = bool(cp_cam.vl["ProPilot"]["CRUISE_ACTIVATED"])
ret.cruiseState.available = bool(cp_cam.vl["ProPilot"]["CRUISE_ON"])
ret.doorOpen = any([cp.vl["DoorsLights"]["DOOR_OPEN_RR"],
cp.vl["DoorsLights"]["DOOR_OPEN_RL"],
cp.vl["DoorsLights"]["DOOR_OPEN_FR"],
cp.vl["DoorsLights"]["DOOR_OPEN_FL"]])
ret.steeringPressed = bool(cp.vl["STEER_TORQUE"]["DriverTouchingWheel"])
ret.steeringTorque = cp.vl["Steering"]["DriverTorque"]
ret.steeringAngle = cp.vl["SteeringWheel"]["Steering_Angle"]
ret.espDisabled = bool(cp.vl["_ESP"]["ESP_DISABLED"])
self.cruise_throttle_msg = copy.copy(cp.vl["CruiseThrottle"])
return ret
@staticmethod
def get_can_parser(CP):
# this function generates lists for signal, messages and initial values
signals = [
# sig_name, sig_address, default
("FL", "WheelspeedFront", 0),
("FR", "WheelspeedFront", 0),
("RL", "WheelspeedRear", 0),
("RR", "WheelspeedRear", 0),
("DOOR_OPEN_FR", "DoorsLights", 1),
("DOOR_OPEN_FL", "DoorsLights", 1),
("DOOR_OPEN_RR", "DoorsLights", 1),
("DOOR_OPEN_RL", "DoorsLights", 1),
("USER_BRAKE_PRESSED", "DoorsLights", 1),
("BRAKE_LIGHT", "DoorsLights", 1),
("DriverTorque", "Steering", 0),
("DriverTouchingWheel", "STEER_TORQUE", 0),
("ThrottlePedal", "Throttle", 0),
("Steering_Angle", "SteeringWheel", 0),
("RIGHT_BLINKER", "Lights", 0),
("LEFT_BLINKER", "Lights", 0),
("PROPILOT_BUTTON", "CruiseThrottle", 0),
("CANCEL_BUTTON", "CruiseThrottle", 0),
("GAS_PEDAL_INVERTED", "CruiseThrottle", 0),
("unsure2", "CruiseThrottle", 0),
("SET_BUTTON", "CruiseThrottle", 0),
("RES_BUTTON", "CruiseThrottle", 0),
("FOLLOW_DISTANCE_BUTTON", "CruiseThrottle", 0),
("NO_BUTTON_PRESSED", "CruiseThrottle", 0),
("GAS_PEDAL", "CruiseThrottle", 0),
("unsure3", "CruiseThrottle", 0),
("unsure", "CruiseThrottle", 0),
("DRIVERS_SEATBELT", "_SEATBELT", 0),
("ESP_DISABLED", "_ESP", 0),
("GEAR_SHIFTER", "GEARBOX", 0),
]
checks = [
# sig_address, frequency
("WheelspeedRear", 50),
("WheelspeedFront", 50),
("DoorsLights", 10),
]
return CANParser(DBC[CP.carFingerprint]['pt'], signals, checks, 0)
@staticmethod
def get_adas_can_parser(CP):
# this function generates lists for signal, messages and initial values
signals = [
# sig_name, sig_address, default
("DESIRED_ANGLE", "LKAS", 0),
("SET_0x80_2", "LKAS", 0),
("MAX_TORQUE", "LKAS", 0),
("SET_0x80", "LKAS", 0),
("COUNTER", "LKAS", 0),
("LKA_ACTIVE", "LKAS", 0),
]
checks = [
# sig_address, frequency
]
return CANParser(DBC[CP.carFingerprint]['pt'], signals, checks, 2)
@staticmethod
def get_cam_can_parser(CP):
signals = [
("CRUISE_ON", "ProPilot", 0),
("CRUISE_ACTIVATED", "ProPilot", 0),
("STEER_STATUS", "ProPilot", 0),
]
checks = [
]
return CANParser(DBC[CP.carFingerprint]['pt'], signals, checks, 1)