Simulator: simulate the obd enabled/changed dance (#31519)

obd dance

tools/sim/lib/simulated_car.py

@@ -2,6 +2,7 @@ import cereal.messaging as messaging
 
 from opendbc.can.packer import CANPacker
 from opendbc.can.parser import CANParser
+from openpilot.common.params import Params
 from openpilot.selfdrive.boardd.boardd_api_impl import can_list_to_can_capnp
 from openpilot.selfdrive.car import crc8_pedal
 from openpilot.tools.sim.lib.common import SimulatorState
@@ -18,6 +19,8 @@ class SimulatedCar:
     self.sm = messaging.SubMaster(['carControl', 'controlsState', 'carParams'])
     self.cp = self.get_car_can_parser()
     self.idx = 0
+    self.params = Params()
+    self.obd_multiplexing = False
 
   @staticmethod
   def get_car_can_parser():
@@ -100,6 +103,11 @@ class SimulatedCar:
 
   def send_panda_state(self, simulator_state):
     self.sm.update(0)
+
+    if self.params.get_bool("ObdMultiplexingEnabled") != self.obd_multiplexing:
+      self.obd_multiplexing = not self.obd_multiplexing
+      self.params.put_bool("ObdMultiplexingChanged", True)
+
     dat = messaging.new_message('pandaStates', 1)
     dat.valid = True
     dat.pandaStates[0] = {

tools/sim/lib/simulated_sensors.py

@@ -3,7 +3,6 @@ import time
 from cereal import log
 import cereal.messaging as messaging
 
-from openpilot.common.params import Params
 from openpilot.common.realtime import DT_DMON
 from openpilot.tools.sim.lib.camerad import Camerad
 
@@ -80,7 +79,6 @@ class SimulatedSensors:
       'current': 5678,
       'fanSpeedRpm': 1000
     }
-    Params().put_bool("ObdMultiplexingEnabled", False)
     self.pm.send('peripheralState', dat)
 
   def send_fake_driver_monitoring(self):