#!/usr/bin/env python3 import os import time import cereal.messaging as messaging from cereal import car from panda import ALTERNATIVE_EXPERIENCE from openpilot.common.params import Params from openpilot.common.realtime import config_realtime_process, Priority, Ratekeeper, DT_CTRL from openpilot.selfdrive.pandad import can_list_to_can_capnp from openpilot.selfdrive.car.car_helpers import get_car, get_one_can from openpilot.selfdrive.car.interfaces import CarInterfaceBase from openpilot.selfdrive.controls.lib.events import Events REPLAY = "REPLAY" in os.environ EventName = car.CarEvent.EventName class Car: CI: CarInterfaceBase def __init__(self, CI=None): self.can_sock = messaging.sub_sock('can', timeout=20) self.sm = messaging.SubMaster(['pandaStates', 'carControl', 'onroadEvents']) self.pm = messaging.PubMaster(['sendcan', 'carState', 'carParams', 'carOutput']) self.can_rcv_timeout_counter = 0 # consecutive timeout count self.can_rcv_cum_timeout_counter = 0 # cumulative timeout count self.CC_prev = car.CarControl.new_message() self.CS_prev = car.CarState.new_message() self.initialized_prev = False self.last_actuators_output = car.CarControl.Actuators.new_message() self.params = Params() if CI is None: # wait for one pandaState and one CAN packet print("Waiting for CAN messages...") get_one_can(self.can_sock) num_pandas = len(messaging.recv_one_retry(self.sm.sock['pandaStates']).pandaStates) experimental_long_allowed = self.params.get_bool("ExperimentalLongitudinalEnabled") self.CI, self.CP = get_car(self.can_sock, self.pm.sock['sendcan'], experimental_long_allowed, num_pandas) else: self.CI, self.CP = CI, CI.CP # set alternative experiences from parameters self.disengage_on_accelerator = self.params.get_bool("DisengageOnAccelerator") self.CP.alternativeExperience = 0 if not self.disengage_on_accelerator: self.CP.alternativeExperience |= ALTERNATIVE_EXPERIENCE.DISABLE_DISENGAGE_ON_GAS openpilot_enabled_toggle = self.params.get_bool("OpenpilotEnabledToggle") controller_available = self.CI.CC is not None and openpilot_enabled_toggle and not self.CP.dashcamOnly self.CP.passive = not controller_available or self.CP.dashcamOnly if self.CP.passive: safety_config = car.CarParams.SafetyConfig.new_message() safety_config.safetyModel = car.CarParams.SafetyModel.noOutput self.CP.safetyConfigs = [safety_config] # Write previous route's CarParams prev_cp = self.params.get("CarParamsPersistent") if prev_cp is not None: self.params.put("CarParamsPrevRoute", prev_cp) # Write CarParams for controls and radard cp_bytes = self.CP.to_bytes() self.params.put("CarParams", cp_bytes) self.params.put_nonblocking("CarParamsCache", cp_bytes) self.params.put_nonblocking("CarParamsPersistent", cp_bytes) self.events = Events() # card is driven by can recv, expected at 100Hz self.rk = Ratekeeper(100, print_delay_threshold=None) def state_update(self) -> car.CarState: """carState update loop, driven by can""" # Update carState from CAN can_strs = messaging.drain_sock_raw(self.can_sock, wait_for_one=True) CS = self.CI.update(self.CC_prev, can_strs) self.sm.update(0) can_rcv_valid = len(can_strs) > 0 # Check for CAN timeout if not can_rcv_valid: self.can_rcv_timeout_counter += 1 self.can_rcv_cum_timeout_counter += 1 else: self.can_rcv_timeout_counter = 0 self.can_rcv_timeout = self.can_rcv_timeout_counter >= 5 if can_rcv_valid and REPLAY: self.can_log_mono_time = messaging.log_from_bytes(can_strs[0]).logMonoTime return CS def update_events(self, CS: car.CarState) -> car.CarState: self.events.clear() self.events.add_from_msg(CS.events) # Disable on rising edge of accelerator or brake. Also disable on brake when speed > 0 if (CS.gasPressed and not self.CS_prev.gasPressed and self.disengage_on_accelerator) or \ (CS.brakePressed and (not self.CS_prev.brakePressed or not CS.standstill)) or \ (CS.regenBraking and (not self.CS_prev.regenBraking or not CS.standstill)): self.events.add(EventName.pedalPressed) CS.events = self.events.to_msg() def state_publish(self, CS: car.CarState): """carState and carParams publish loop""" # carParams - logged every 50 seconds (> 1 per segment) if self.sm.frame % int(50. / DT_CTRL) == 0: cp_send = messaging.new_message('carParams') cp_send.valid = True cp_send.carParams = self.CP self.pm.send('carParams', cp_send) # publish new carOutput co_send = messaging.new_message('carOutput') co_send.valid = self.sm.all_checks(['carControl']) co_send.carOutput.actuatorsOutput = self.last_actuators_output self.pm.send('carOutput', co_send) # kick off controlsd step while we actuate the latest carControl packet cs_send = messaging.new_message('carState') cs_send.valid = CS.canValid cs_send.carState = CS cs_send.carState.canRcvTimeout = self.can_rcv_timeout cs_send.carState.canErrorCounter = self.can_rcv_cum_timeout_counter cs_send.carState.cumLagMs = -self.rk.remaining * 1000. self.pm.send('carState', cs_send) def controls_update(self, CS: car.CarState, CC: car.CarControl): """control update loop, driven by carControl""" if not self.initialized_prev: # Initialize CarInterface, once controls are ready # TODO: this can make us miss at least a few cycles when doing an ECU knockout self.CI.init(self.CP, self.can_sock, self.pm.sock['sendcan']) # signal pandad to switch to car safety mode self.params.put_bool_nonblocking("ControlsReady", True) if self.sm.all_alive(['carControl']): # send car controls over can now_nanos = self.can_log_mono_time if REPLAY else int(time.monotonic() * 1e9) self.last_actuators_output, can_sends = self.CI.apply(CC, now_nanos) self.pm.send('sendcan', can_list_to_can_capnp(can_sends, msgtype='sendcan', valid=CS.canValid)) self.CC_prev = CC def step(self): CS = self.state_update() self.update_events(CS) self.state_publish(CS) initialized = (not any(e.name == EventName.controlsInitializing for e in self.sm['onroadEvents']) and self.sm.seen['onroadEvents']) if not self.CP.passive and initialized: self.controls_update(CS, self.sm['carControl']) self.initialized_prev = initialized self.CS_prev = CS.as_reader() def card_thread(self): while True: self.step() self.rk.monitor_time() def main(): config_realtime_process(4, Priority.CTRL_HIGH) car = Car() car.card_thread() if __name__ == "__main__": main()