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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import copy
from cereal import car
VisualAlert = car.CarControl.HUDControl.VisualAlert
def create_steering_control(packer, apply_steer):
values = {
"LKAS_Output": apply_steer,
"LKAS_Request": 1 if apply_steer != 0 else 0,
"SET_1": 1
}
return packer.make_can_msg("ES_LKAS", 0, values)
def create_steering_status(packer):
return packer.make_can_msg("ES_LKAS_State", 0, {})
def create_es_distance(packer, es_distance_msg, bus, pcm_cancel_cmd):
values = copy.copy(es_distance_msg)
values["COUNTER"] = (values["COUNTER"] + 1) % 0x10
if pcm_cancel_cmd:
values["Cruise_Cancel"] = 1
return packer.make_can_msg("ES_Distance", bus, values)
def create_es_lkas(packer, es_lkas_msg, enabled, visual_alert, left_line, right_line, left_lane_depart, right_lane_depart):
values = copy.copy(es_lkas_msg)
# Filter the stock LKAS "Keep hands on wheel" alert
if values["LKAS_Alert_Msg"] == 1:
values["LKAS_Alert_Msg"] = 0
# Filter the stock LKAS sending an audible alert when it turns off LKAS
if values["LKAS_Alert"] == 27:
values["LKAS_Alert"] = 0
# Filter the stock LKAS sending an audible alert when "Keep hands on wheel" alert is active (2020+ models)
if values["LKAS_Alert"] == 28 and values["LKAS_Alert_Msg"] == 7:
values["LKAS_Alert"] = 0
# Filter the stock LKAS sending an audible alert when "Keep hands on wheel OFF" alert is active (2020+ models)
if values["LKAS_Alert"] == 30:
values["LKAS_Alert"] = 0
# Filter the stock LKAS sending "Keep hands on wheel OFF" alert (2020+ models)
if values["LKAS_Alert_Msg"] == 7:
values["LKAS_Alert_Msg"] = 0
# Show Keep hands on wheel alert for openpilot steerRequired alert
if visual_alert == VisualAlert.steerRequired:
values["LKAS_Alert_Msg"] = 1
# Ensure we don't overwrite potentially more important alerts from stock (e.g. FCW)
if visual_alert == VisualAlert.ldw and values["LKAS_Alert"] == 0:
if left_lane_depart:
values["LKAS_Alert"] = 12 # Left lane departure dash alert
elif right_lane_depart:
values["LKAS_Alert"] = 11 # Right lane departure dash alert
if enabled:
values["LKAS_ACTIVE"] = 1 # Show LKAS lane lines
values["LKAS_Dash_State"] = 2 # Green enabled indicator
else:
values["LKAS_Dash_State"] = 0 # LKAS Not enabled
values["LKAS_Left_Line_Visible"] = int(left_line)
values["LKAS_Right_Line_Visible"] = int(right_line)
return packer.make_can_msg("ES_LKAS_State", 0, values)
def create_es_dashstatus(packer, dashstatus_msg):
values = copy.copy(dashstatus_msg)
# Filter stock LKAS disabled and Keep hands on steering wheel OFF alerts
if values["LKAS_State_Msg"] in (2, 3):
values["LKAS_State_Msg"] = 0
return packer.make_can_msg("ES_DashStatus", 0, values)
def create_infotainmentstatus(packer, infotainmentstatus_msg, visual_alert):
# Filter stock LKAS disabled and Keep hands on steering wheel OFF alerts
if infotainmentstatus_msg["LKAS_State_Infotainment"] in (3, 4):
infotainmentstatus_msg["LKAS_State_Infotainment"] = 0
# Show Keep hands on wheel alert for openpilot steerRequired alert
if visual_alert == VisualAlert.steerRequired:
infotainmentstatus_msg["LKAS_State_Infotainment"] = 3
# Show Obstacle Detected for fcw
if visual_alert == VisualAlert.fcw:
infotainmentstatus_msg["LKAS_State_Infotainment"] = 2
return packer.make_can_msg("INFOTAINMENT_STATUS", 0, infotainmentstatus_msg)
# *** Subaru Pre-global ***
def subaru_preglobal_checksum(packer, values, addr):
dat = packer.make_can_msg(addr, 0, values)[2]
return (sum(dat[:7])) % 256
def create_preglobal_steering_control(packer, apply_steer):
values = {
"LKAS_Command": apply_steer,
"LKAS_Active": 1 if apply_steer != 0 else 0
}
values["Checksum"] = subaru_preglobal_checksum(packer, values, "ES_LKAS")
return packer.make_can_msg("ES_LKAS", 0, values)
def create_preglobal_es_distance(packer, cruise_button, es_distance_msg):
values = copy.copy(es_distance_msg)
values["Cruise_Button"] = cruise_button
values["Checksum"] = subaru_preglobal_checksum(packer, values, "ES_Distance")
return packer.make_can_msg("ES_Distance", 0, values)