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IQ.Pilot/iqdbc_repo/iqdbc/car/byd/interface.py
2026-08-22 23:42:42 -05:00

74 lines
3.3 KiB
Python

from iqdbc.car import get_safety_config, structs
from iqdbc.car.interfaces import CarInterfaceBase
from iqdbc.car.byd.carcontroller import CarController
from iqdbc.car.byd.carstate import CarState
from iqdbc.car.byd.values import BydFlags, BydSafetyFlags
class CarInterface(CarInterfaceBase):
CarState = CarState
CarController = CarController
@staticmethod
def _get_params(ret: structs.CarParams, candidate, fingerprint, car_fw, alpha_long, is_release, docs) -> structs.CarParams:
ret.brand = "byd"
ret.safetyConfigs = [get_safety_config(structs.CarParams.SafetyModel.byd)]
ret.steerControlType = structs.CarParams.SteerControlType.angle
ret.steerActuatorDelay = 0.1
ret.steerLimitTimer = 0.4
# the Veoneer tracks live on a private CAN-FD pair that the BYD-6 harness jumpers straight
# through, so the panda never sees them
ret.radarUnavailable = True
# Two harness types exist for this car, and they differ in what can be filtered:
#
# camera harness - the relay only intercepts the MPC camera. 0x1E2/0x316 are camera
# frames so lateral works, but the ADAS/ACC ECU sits on the chassis bus
# in front of the relay: its 0x32E cannot be blocked and openpilot would
# contend with the stock ACC on the same address. Stock long only.
# gateway harness - the ACC ECU is behind the relay, so 0x32E is filterable and openpilot
# longitudinal is possible.
#
# These CANNOT be told apart from the fingerprint: fingerprinting runs with the relay
# closed, which ties bus 2 to bus 0, so bus 2 shows the whole car on either harness. The
# difference is only observable once the relay opens, which is after CarParams is fixed.
# Measured on a camera harness with the relay open: bus 2 carries 11 camera addresses and
# neither 0x32D nor 0x32E is among them.
#
# So default to the camera harness and keep longitudinal off. Setting GATEWAY_HARNESS is an
# explicit opt-in that must not be inferred - see BYD_SEALION7_PORT_PLAN.md.
gateway_harness = bool(ret.flags & BydFlags.GATEWAY_HARNESS)
ret.alphaLongitudinalAvailable = gateway_harness
if alpha_long and gateway_harness:
ret.openpilotLongitudinalControl = True
ret.safetyConfigs[0].safetyParam |= BydSafetyFlags.LONG_CONTROL.value
ret.longitudinalActuatorDelay = 0.5 # the IPB closes its own loop
ret.vEgoStarting = 0.3
ret.stopAccel = -0.5
ret.startAccel = 1.5
# without this longcontrol goes stopping -> pid directly and neither the startAccel kick
# nor the STANDSTILL_RESUME pulse ever fires
ret.startingState = True
# ACCEL_CMD is feedforward; high feedback gain on a 0.5s-lag actuator winds up the
# integrator before the car responds
ret.longitudinalTuning.kpBP = [0.0, 5.0, 35.0]
ret.longitudinalTuning.kpV = [0.5, 0.4, 0.3]
ret.longitudinalTuning.kiBP = [0.0, 35.0]
ret.longitudinalTuning.kiV = [0.03, 0.02]
return ret
@staticmethod
def _get_params_iq(stock_cp: structs.CarParams, ret: structs.IQCarParams, candidate, fingerprint,
car_fw, alpha_long: bool, is_release_iq: bool, docs: bool) -> structs.IQCarParams:
if stock_cp.openpilotLongitudinalControl:
ret.longitudinalStoppingSpeedOverride = 0.3
return ret