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.config import Conversions as CV
from selfdrive.car.honda.values import HONDA_BOSCH
def get_pt_bus(car_fingerprint, has_relay):
return 1 if car_fingerprint in HONDA_BOSCH and has_relay else 0
def get_lkas_cmd_bus(car_fingerprint, has_relay):
return 2 if car_fingerprint in HONDA_BOSCH and not has_relay else 0
def create_brake_command(packer, apply_brake, pump_on, pcm_override, pcm_cancel_cmd, fcw, idx, car_fingerprint, has_relay, stock_brake):
# TODO: do we loose pressure if we keep pump off for long?
brakelights = apply_brake > 0
brake_rq = apply_brake > 0
pcm_fault_cmd = False
values = {
"COMPUTER_BRAKE": apply_brake,
"BRAKE_PUMP_REQUEST": pump_on,
"CRUISE_OVERRIDE": pcm_override,
"CRUISE_FAULT_CMD": pcm_fault_cmd,
"CRUISE_CANCEL_CMD": pcm_cancel_cmd,
"COMPUTER_BRAKE_REQUEST": brake_rq,
"SET_ME_1": 1,
"BRAKE_LIGHTS": brakelights,
"CHIME": stock_brake["CHIME"] if fcw else 0, # send the chime for stock fcw
"FCW": fcw << 1, # TODO: Why are there two bits for fcw?
"AEB_REQ_1": 0,
"AEB_REQ_2": 0,
"AEB_STATUS": 0,
}
bus = get_pt_bus(car_fingerprint, has_relay)
return packer.make_can_msg("BRAKE_COMMAND", bus, values, idx)
def create_steering_control(packer, apply_steer, lkas_active, car_fingerprint, idx, has_relay):
values = {
"STEER_TORQUE": apply_steer if lkas_active else 0,
"STEER_TORQUE_REQUEST": lkas_active,
}
bus = get_lkas_cmd_bus(car_fingerprint, has_relay)
return packer.make_can_msg("STEERING_CONTROL", bus, values, idx)
def create_ui_commands(packer, pcm_speed, hud, car_fingerprint, is_metric, idx, has_relay, stock_hud):
commands = []
bus_pt = get_pt_bus(car_fingerprint, has_relay)
bus_lkas = get_lkas_cmd_bus(car_fingerprint, has_relay)
if car_fingerprint not in HONDA_BOSCH:
acc_hud_values = {
'PCM_SPEED': pcm_speed * CV.MS_TO_KPH,
'PCM_GAS': hud.pcm_accel,
'CRUISE_SPEED': hud.v_cruise,
'ENABLE_MINI_CAR': 1,
'HUD_LEAD': hud.car,
'HUD_DISTANCE': 3, # max distance setting on display
'IMPERIAL_UNIT': int(not is_metric),
'SET_ME_X01_2': 1,
'SET_ME_X01': 1,
"FCM_OFF": stock_hud["FCM_OFF"],
"FCM_OFF_2": stock_hud["FCM_OFF_2"],
"FCM_PROBLEM": stock_hud["FCM_PROBLEM"],
"ICONS": stock_hud["ICONS"],
}
commands.append(packer.make_can_msg("ACC_HUD", bus_pt, acc_hud_values, idx))
lkas_hud_values = {
'SET_ME_X41': 0x41,
'SET_ME_X48': 0x48,
'STEERING_REQUIRED': hud.steer_required,
'SOLID_LANES': hud.lanes,
'BEEP': 0,
}
commands.append(packer.make_can_msg('LKAS_HUD', bus_lkas, lkas_hud_values, idx))
return commands
def spam_buttons_command(packer, button_val, idx, car_fingerprint, has_relay):
values = {
'CRUISE_BUTTONS': button_val,
'CRUISE_SETTING': 0,
}
bus = get_pt_bus(car_fingerprint, has_relay)
return packer.make_can_msg("SCM_BUTTONS", bus, values, idx)