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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from dataclasses import dataclass, field
from enum import IntFlag
from openpilot.selfdrive.car import CarSpecs, DbcDict, PlatformConfig, Platforms, dbc_dict
from openpilot.selfdrive.car.common.conversions import Conversions as CV
from openpilot.selfdrive.car.structs import CarParams
from openpilot.selfdrive.car.docs_definitions import CarHarness, CarDocs, CarParts
from openpilot.selfdrive.car.fw_query_definitions import FwQueryConfig, Request, StdQueries
Ecu = CarParams.Ecu
# Steer torque limits
class CarControllerParams:
STEER_MAX = 800 # theoretical max_steer 2047
STEER_DELTA_UP = 10 # torque increase per refresh
STEER_DELTA_DOWN = 25 # torque decrease per refresh
STEER_DRIVER_ALLOWANCE = 15 # allowed driver torque before start limiting
STEER_DRIVER_MULTIPLIER = 1 # weight driver torque
STEER_DRIVER_FACTOR = 1 # from dbc
STEER_ERROR_MAX = 350 # max delta between torque cmd and torque motor
STEER_STEP = 1 # 100 Hz
def __init__(self, CP):
pass
@dataclass
class MazdaCarDocs(CarDocs):
package: str = "All"
car_parts: CarParts = field(default_factory=CarParts.common([CarHarness.mazda]))
@dataclass(frozen=True, kw_only=True)
class MazdaCarSpecs(CarSpecs):
tireStiffnessFactor: float = 0.7 # not optimized yet
class MazdaFlags(IntFlag):
# Static flags
# Gen 1 hardware: same CAN messages and same camera
GEN1 = 1
@dataclass
class MazdaPlatformConfig(PlatformConfig):
dbc_dict: DbcDict = field(default_factory=lambda: dbc_dict('mazda_2017', None))
flags: int = MazdaFlags.GEN1
class CAR(Platforms):
MAZDA_CX5 = MazdaPlatformConfig(
[MazdaCarDocs("Mazda CX-5 2017-21")],
MazdaCarSpecs(mass=3655 * CV.LB_TO_KG, wheelbase=2.7, steerRatio=15.5)
)
MAZDA_CX9 = MazdaPlatformConfig(
[MazdaCarDocs("Mazda CX-9 2016-20")],
MazdaCarSpecs(mass=4217 * CV.LB_TO_KG, wheelbase=3.1, steerRatio=17.6)
)
MAZDA_3 = MazdaPlatformConfig(
[MazdaCarDocs("Mazda 3 2017-18")],
MazdaCarSpecs(mass=2875 * CV.LB_TO_KG, wheelbase=2.7, steerRatio=14.0)
)
MAZDA_6 = MazdaPlatformConfig(
[MazdaCarDocs("Mazda 6 2017-20")],
MazdaCarSpecs(mass=3443 * CV.LB_TO_KG, wheelbase=2.83, steerRatio=15.5)
)
MAZDA_CX9_2021 = MazdaPlatformConfig(
[MazdaCarDocs("Mazda CX-9 2021-23", video_link="https://youtu.be/dA3duO4a0O4")],
MAZDA_CX9.specs
)
MAZDA_CX5_2022 = MazdaPlatformConfig(
[MazdaCarDocs("Mazda CX-5 2022-24")],
MAZDA_CX5.specs,
)
class LKAS_LIMITS:
STEER_THRESHOLD = 15
DISABLE_SPEED = 45 # kph
ENABLE_SPEED = 52 # kph
class Buttons:
NONE = 0
SET_PLUS = 1
SET_MINUS = 2
RESUME = 3
CANCEL = 4
FW_QUERY_CONFIG = FwQueryConfig(
requests=[
# TODO: check data to ensure ABS does not skip ISO-TP frames on bus 0
Request(
[StdQueries.MANUFACTURER_SOFTWARE_VERSION_REQUEST],
[StdQueries.MANUFACTURER_SOFTWARE_VERSION_RESPONSE],
bus=0,
),
],
)
DBC = CAR.create_dbc_map()