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 selfdrive.car import apply_std_steer_torque_limits
from selfdrive.car.hyundai.hyundaican import create_lkas11, create_lkas12, \
create_1191, create_1156, \
create_clu11
from selfdrive.car.hyundai.values import Buttons, SteerLimitParams
from selfdrive.can.packer import CANPacker
class CarController():
def __init__(self, dbc_name, car_fingerprint):
self.apply_steer_last = 0
self.car_fingerprint = car_fingerprint
self.lkas11_cnt = 0
self.cnt = 0
self.last_resume_cnt = 0
# True when giraffe switch 2 is low and we need to replace all the camera messages
# otherwise we forward the camera msgs and we just replace the lkas cmd signals
self.camera_disconnected = False
self.packer = CANPacker(dbc_name)
def update(self, enabled, CS, actuators, pcm_cancel_cmd, hud_alert):
### Steering Torque
apply_steer = actuators.steer * SteerLimitParams.STEER_MAX
apply_steer = apply_std_steer_torque_limits(apply_steer, self.apply_steer_last, CS.steer_torque_driver, SteerLimitParams)
if not enabled:
apply_steer = 0
steer_req = 1 if enabled else 0
self.apply_steer_last = apply_steer
can_sends = []
self.lkas11_cnt = self.cnt % 0x10
self.clu11_cnt = self.cnt % 0x10
if self.camera_disconnected:
if (self.cnt % 10) == 0:
can_sends.append(create_lkas12())
if (self.cnt % 50) == 0:
can_sends.append(create_1191())
if (self.cnt % 7) == 0:
can_sends.append(create_1156())
can_sends.append(create_lkas11(self.packer, self.car_fingerprint, apply_steer, steer_req, self.lkas11_cnt,
enabled, CS.lkas11, hud_alert, keep_stock=(not self.camera_disconnected)))
if pcm_cancel_cmd:
can_sends.append(create_clu11(self.packer, CS.clu11, Buttons.CANCEL))
elif CS.stopped and (self.cnt - self.last_resume_cnt) > 5:
self.last_resume_cnt = self.cnt
can_sends.append(create_clu11(self.packer, CS.clu11, Buttons.RES_ACCEL))
self.cnt += 1
return can_sends