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 Enum, IntFlag
from opendbc.car import AngleSteeringLimits, Bus, CarSpecs, DbcDict, PlatformConfig, Platforms, uds
from opendbc.car.structs import CarParams
from opendbc.car.docs_definitions import CarDocs, CarFootnote, CarHarness, CarParts, Column
from opendbc.car.fw_query_definitions import FwQueryConfig, Request, StdQueries
Ecu = CarParams.Ecu
class CarControllerParams:
ANGLE_LIMITS: AngleSteeringLimits = AngleSteeringLimits(
# When output steering Angle not within range -1311 and 1310,
# CANPacker packs wrong angle output to be decoded by panda
600, # deg, reasonable limit
([0., 5., 15.], [5., .8, .15]),
([0., 5., 15.], [5., 3.5, 0.4]),
)
LKAS_MAX_TORQUE = 1 # A value of 1 is easy to overpower
STEER_THRESHOLD = 1.0
def __init__(self, CP):
pass
class NissanSafetyFlags(IntFlag):
ALT_EPS_BUS = 1
class Footnote(Enum):
SETUP = CarFootnote(
"See more setup details for <a href=\"https://github.com/commaai/openpilot/wiki/nissan\" target=\"_blank\">Nissan</a>.",
Column.MAKE, setup_note=True)
@dataclass
class NissanCarDocs(CarDocs):
package: str = "ProPILOT Assist"
car_parts: CarParts = field(default_factory=CarParts.common([CarHarness.nissan_a]))
footnotes: list[Enum] = field(default_factory=lambda: [Footnote.SETUP])
@dataclass(frozen=True)
class NissanCarSpecs(CarSpecs):
centerToFrontRatio: float = 0.44
steerRatio: float = 17.
@dataclass
class NissanPlatformConfig(PlatformConfig):
dbc_dict: DbcDict = field(default_factory=lambda: {Bus.pt: 'nissan_x_trail_2017_generated'})
class CAR(Platforms):
NISSAN_XTRAIL = NissanPlatformConfig(
[NissanCarDocs("Nissan X-Trail 2017")],
NissanCarSpecs(mass=1610, wheelbase=2.705)
)
NISSAN_LEAF = NissanPlatformConfig(
[NissanCarDocs("Nissan Leaf 2018-23", video_link="https://youtu.be/vaMbtAh_0cY")],
NissanCarSpecs(mass=1610, wheelbase=2.705),
{Bus.pt: 'nissan_leaf_2018_generated'},
)
# Leaf with ADAS ECU found behind instrument cluster instead of glovebox
# Currently the only known difference between them is the inverted seatbelt signal.
NISSAN_LEAF_IC = NISSAN_LEAF.override(car_docs=[])
NISSAN_ROGUE = NissanPlatformConfig(
[NissanCarDocs("Nissan Rogue 2018-20")],
NissanCarSpecs(mass=1610, wheelbase=2.705)
)
NISSAN_ALTIMA = NissanPlatformConfig(
[NissanCarDocs("Nissan Altima 2019-20", car_parts=CarParts.common([CarHarness.nissan_b]))],
NissanCarSpecs(mass=1492, wheelbase=2.824)
)
DBC = CAR.create_dbc_map()
# Default diagnostic session
NISSAN_DIAGNOSTIC_REQUEST_KWP = bytes([uds.SERVICE_TYPE.DIAGNOSTIC_SESSION_CONTROL, 0x81])
NISSAN_DIAGNOSTIC_RESPONSE_KWP = bytes([uds.SERVICE_TYPE.DIAGNOSTIC_SESSION_CONTROL + 0x40, 0x81])
# Manufacturer specific
NISSAN_DIAGNOSTIC_REQUEST_KWP_2 = bytes([uds.SERVICE_TYPE.DIAGNOSTIC_SESSION_CONTROL, 0xda])
NISSAN_DIAGNOSTIC_RESPONSE_KWP_2 = bytes([uds.SERVICE_TYPE.DIAGNOSTIC_SESSION_CONTROL + 0x40, 0xda])
NISSAN_VERSION_REQUEST_KWP = b'\x21\x83'
NISSAN_VERSION_RESPONSE_KWP = b'\x61\x83'
NISSAN_RX_OFFSET = 0x20
FW_QUERY_CONFIG = FwQueryConfig(
requests=[request for bus, logging in ((0, False), (1, True)) for request in [
Request(
[NISSAN_DIAGNOSTIC_REQUEST_KWP, NISSAN_VERSION_REQUEST_KWP],
[NISSAN_DIAGNOSTIC_RESPONSE_KWP, NISSAN_VERSION_RESPONSE_KWP],
bus=bus,
logging=logging,
),
Request(
[NISSAN_DIAGNOSTIC_REQUEST_KWP, NISSAN_VERSION_REQUEST_KWP],
[NISSAN_DIAGNOSTIC_RESPONSE_KWP, NISSAN_VERSION_RESPONSE_KWP],
rx_offset=NISSAN_RX_OFFSET,
bus=bus,
logging=logging,
),
# Rogue's engine solely responds to this
Request(
[NISSAN_DIAGNOSTIC_REQUEST_KWP_2, NISSAN_VERSION_REQUEST_KWP],
[NISSAN_DIAGNOSTIC_RESPONSE_KWP_2, NISSAN_VERSION_RESPONSE_KWP],
bus=bus,
logging=logging,
),
Request(
[StdQueries.MANUFACTURER_SOFTWARE_VERSION_REQUEST],
[StdQueries.MANUFACTURER_SOFTWARE_VERSION_RESPONSE],
rx_offset=NISSAN_RX_OFFSET,
bus=bus,
logging=logging,
),
]],
)