from dataclasses import dataclass, field
from cereal import car
from openpilot.selfdrive.car import dbc_dict, PlatformConfig, DbcDict, Platforms, CarSpecs
from openpilot.selfdrive.car.docs_definitions import CarHarness, CarDocs, CarParts
from openpilot.selfdrive.car.fw_query_definitions import FwQueryConfig, Request, StdQueries
Ecu = car.CarParams.Ecu
[docs]
class CarControllerParams:
STEER_MAX = 300 # GM limit is 3Nm. Used by carcontroller to generate LKA output
STEER_STEP = 3 # Active control frames per command (~33hz)
INACTIVE_STEER_STEP = 10 # Inactive control frames per command (10hz)
STEER_DELTA_UP = 10 # Delta rates require review due to observed EPS weakness
STEER_DELTA_DOWN = 15
STEER_DRIVER_ALLOWANCE = 65
STEER_DRIVER_MULTIPLIER = 4
STEER_DRIVER_FACTOR = 100
NEAR_STOP_BRAKE_PHASE = 0.5 # m/s
# Heartbeat for dash "Service Adaptive Cruise" and "Service Front Camera"
ADAS_KEEPALIVE_STEP = 100
CAMERA_KEEPALIVE_STEP = 100
# Allow small margin below -3.5 m/s^2 from ISO 15622:2018 since we
# perform the closed loop control, and might need some
# to apply some more braking if we're on a downhill slope.
# Our controller should still keep the 2 second average above
# -3.5 m/s^2 as per planner limits
ACCEL_MAX = 2. # m/s^2
ACCEL_MIN = -4. # m/s^2
def __init__(self, CP):
# Gas/brake lookups
self.ZERO_GAS = 2048 # Coasting
self.MAX_BRAKE = 400 # ~ -4.0 m/s^2 with regen
if CP.carFingerprint in CAMERA_ACC_CAR:
self.MAX_GAS = 3400
self.MAX_ACC_REGEN = 1514
self.INACTIVE_REGEN = 1554
# Camera ACC vehicles have no regen while enabled.
# Camera transitions to MAX_ACC_REGEN from ZERO_GAS and uses friction brakes instantly
max_regen_acceleration = 0.
else:
self.MAX_GAS = 3072 # Safety limit, not ACC max. Stock ACC >4096 from standstill.
self.MAX_ACC_REGEN = 1404 # Max ACC regen is slightly less than max paddle regen
self.INACTIVE_REGEN = 1404
# ICE has much less engine braking force compared to regen in EVs,
# lower threshold removes some braking deadzone
max_regen_acceleration = -1. if CP.carFingerprint in EV_CAR else -0.1
self.GAS_LOOKUP_BP = [max_regen_acceleration, 0., self.ACCEL_MAX]
self.GAS_LOOKUP_V = [self.MAX_ACC_REGEN, self.ZERO_GAS, self.MAX_GAS]
self.BRAKE_LOOKUP_BP = [self.ACCEL_MIN, max_regen_acceleration]
self.BRAKE_LOOKUP_V = [self.MAX_BRAKE, 0.]
[docs]
@dataclass
class GMCarDocs(CarDocs):
package: str = "Adaptive Cruise Control (ACC)"
[docs]
def init_make(self, CP: car.CarParams):
if CP.networkLocation == car.CarParams.NetworkLocation.fwdCamera:
self.car_parts = CarParts.common([CarHarness.gm])
else:
self.car_parts = CarParts.common([CarHarness.obd_ii])
[docs]
@dataclass(frozen=True, kw_only=True)
class GMCarSpecs(CarSpecs):
tireStiffnessFactor: float = 0.444 # not optimized yet
[docs]
class CAR(Platforms):
HOLDEN_ASTRA = GMASCMPlatformConfig(
[GMCarDocs("Holden Astra 2017")],
GMCarSpecs(mass=1363, wheelbase=2.662, steerRatio=15.7, centerToFrontRatio=0.4),
)
CHEVROLET_VOLT = GMASCMPlatformConfig(
[GMCarDocs("Chevrolet Volt 2017-18", min_enable_speed=0, video_link="https://youtu.be/QeMCN_4TFfQ")],
GMCarSpecs(mass=1607, wheelbase=2.69, steerRatio=17.7, centerToFrontRatio=0.45, tireStiffnessFactor=0.469),
)
CADILLAC_ATS = GMASCMPlatformConfig(
[GMCarDocs("Cadillac ATS Premium Performance 2018")],
GMCarSpecs(mass=1601, wheelbase=2.78, steerRatio=15.3),
)
CHEVROLET_MALIBU = GMASCMPlatformConfig(
[GMCarDocs("Chevrolet Malibu Premier 2017")],
GMCarSpecs(mass=1496, wheelbase=2.83, steerRatio=15.8, centerToFrontRatio=0.4),
)
GMC_ACADIA = GMASCMPlatformConfig(
[GMCarDocs("GMC Acadia 2018", video_link="https://www.youtube.com/watch?v=0ZN6DdsBUZo")],
GMCarSpecs(mass=1975, wheelbase=2.86, steerRatio=14.4, centerToFrontRatio=0.4),
)
BUICK_LACROSSE = GMASCMPlatformConfig(
[GMCarDocs("Buick LaCrosse 2017-19", "Driver Confidence Package 2")],
GMCarSpecs(mass=1712, wheelbase=2.91, steerRatio=15.8, centerToFrontRatio=0.4),
)
BUICK_REGAL = GMASCMPlatformConfig(
[GMCarDocs("Buick Regal Essence 2018")],
GMCarSpecs(mass=1714, wheelbase=2.83, steerRatio=14.4, centerToFrontRatio=0.4),
)
CADILLAC_ESCALADE = GMASCMPlatformConfig(
[GMCarDocs("Cadillac Escalade 2017", "Driver Assist Package")],
GMCarSpecs(mass=2564, wheelbase=2.95, steerRatio=17.3),
)
CADILLAC_ESCALADE_ESV = GMASCMPlatformConfig(
[GMCarDocs("Cadillac Escalade ESV 2016", "Adaptive Cruise Control (ACC) & LKAS")],
GMCarSpecs(mass=2739, wheelbase=3.302, steerRatio=17.3, tireStiffnessFactor=1.0),
)
CADILLAC_ESCALADE_ESV_2019 = GMASCMPlatformConfig(
[GMCarDocs("Cadillac Escalade ESV 2019", "Adaptive Cruise Control (ACC) & LKAS")],
CADILLAC_ESCALADE_ESV.specs,
)
CHEVROLET_BOLT_EUV = GMPlatformConfig(
[
GMCarDocs("Chevrolet Bolt EUV 2022-23", "Premier or Premier Redline Trim without Super Cruise Package", video_link="https://youtu.be/xvwzGMUA210"),
GMCarDocs("Chevrolet Bolt EV 2022-23", "2LT Trim with Adaptive Cruise Control Package"),
],
GMCarSpecs(mass=1669, wheelbase=2.63779, steerRatio=16.8, centerToFrontRatio=0.4, tireStiffnessFactor=1.0),
)
CHEVROLET_SILVERADO = GMPlatformConfig(
[
GMCarDocs("Chevrolet Silverado 1500 2020-21", "Safety Package II"),
GMCarDocs("GMC Sierra 1500 2020-21", "Driver Alert Package II", video_link="https://youtu.be/5HbNoBLzRwE"),
],
GMCarSpecs(mass=2450, wheelbase=3.75, steerRatio=16.3, tireStiffnessFactor=1.0),
)
CHEVROLET_EQUINOX = GMPlatformConfig(
[GMCarDocs("Chevrolet Equinox 2019-22")],
GMCarSpecs(mass=1588, wheelbase=2.72, steerRatio=14.4, centerToFrontRatio=0.4),
)
CHEVROLET_TRAILBLAZER = GMPlatformConfig(
[GMCarDocs("Chevrolet Trailblazer 2021-22")],
GMCarSpecs(mass=1345, wheelbase=2.64, steerRatio=16.8, centerToFrontRatio=0.4, tireStiffnessFactor=1.0),
)
[docs]
class AccState:
OFF = 0
ACTIVE = 1
FAULTED = 3
STANDSTILL = 4
[docs]
class CanBus:
POWERTRAIN = 0
OBSTACLE = 1
CAMERA = 2
CHASSIS = 2
LOOPBACK = 128
DROPPED = 192
# In a Data Module, an identifier is a string used to recognize an object,
# either by itself or together with the identifiers of parent objects.
# Each returns a 4 byte hex representation of the decimal part number. `b"\x02\x8c\xf0'"` -> 42790951
GM_BOOT_SOFTWARE_PART_NUMER_REQUEST = b'\x1a\xc0' # likely does not contain anything useful
GM_SOFTWARE_MODULE_1_REQUEST = b'\x1a\xc1'
GM_SOFTWARE_MODULE_2_REQUEST = b'\x1a\xc2'
GM_SOFTWARE_MODULE_3_REQUEST = b'\x1a\xc3'
# Part number of XML data file that is used to configure ECU
GM_XML_DATA_FILE_PART_NUMBER = b'\x1a\x9c'
GM_XML_CONFIG_COMPAT_ID = b'\x1a\x9b' # used to know if XML file is compatible with the ECU software/hardware
# This DID is for identifying the part number that reflects the mix of hardware,
# software, and calibrations in the ECU when it first arrives at the vehicle assembly plant.
# If there's an Alpha Code, it's associated with this part number and stored in the DID $DB.
GM_END_MODEL_PART_NUMBER_REQUEST = b'\x1a\xcb'
GM_END_MODEL_PART_NUMBER_ALPHA_CODE_REQUEST = b'\x1a\xdb'
GM_BASE_MODEL_PART_NUMBER_REQUEST = b'\x1a\xcc'
GM_BASE_MODEL_PART_NUMBER_ALPHA_CODE_REQUEST = b'\x1a\xdc'
GM_FW_RESPONSE = b'\x5a'
GM_FW_REQUESTS = [
GM_BOOT_SOFTWARE_PART_NUMER_REQUEST,
GM_SOFTWARE_MODULE_1_REQUEST,
GM_SOFTWARE_MODULE_2_REQUEST,
GM_SOFTWARE_MODULE_3_REQUEST,
GM_XML_DATA_FILE_PART_NUMBER,
GM_XML_CONFIG_COMPAT_ID,
GM_END_MODEL_PART_NUMBER_REQUEST,
GM_END_MODEL_PART_NUMBER_ALPHA_CODE_REQUEST,
GM_BASE_MODEL_PART_NUMBER_REQUEST,
GM_BASE_MODEL_PART_NUMBER_ALPHA_CODE_REQUEST,
]
GM_RX_OFFSET = 0x400
FW_QUERY_CONFIG = FwQueryConfig(
requests=[request for req in GM_FW_REQUESTS for request in [
Request(
[StdQueries.SHORT_TESTER_PRESENT_REQUEST, req],
[StdQueries.SHORT_TESTER_PRESENT_RESPONSE, GM_FW_RESPONSE + bytes([req[-1]])],
rx_offset=GM_RX_OFFSET,
bus=0,
logging=True,
),
]],
extra_ecus=[(Ecu.fwdCamera, 0x24b, None)],
)
EV_CAR = {CAR.CHEVROLET_VOLT, CAR.CHEVROLET_BOLT_EUV}
# We're integrated at the camera with VOACC on these cars (instead of ASCM w/ OBD-II harness)
CAMERA_ACC_CAR = {CAR.CHEVROLET_BOLT_EUV, CAR.CHEVROLET_SILVERADO, CAR.CHEVROLET_EQUINOX, CAR.CHEVROLET_TRAILBLAZER}
STEER_THRESHOLD = 1.0
DBC = CAR.create_dbc_map()