Chrysler: Parse distance button from steering wheel (#31764)

selfdrive/car/chrysler/carstate.py

@@ -21,10 +21,16 @@ class CarState(CarStateBase):
     else:
       self.shifter_values = can_define.dv["GEAR"]["PRNDL"]
 
+    self.prev_distance_button = 0
+    self.distance_button = 0
+
   def update(self, cp, cp_cam):
 
     ret = car.CarState.new_message()
 
+    self.prev_distance_button = self.distance_button
+    self.distance_button = cp.vl["CRUISE_BUTTONS"]["ACC_Distance_Dec"]
+
     # lock info
     ret.doorOpen = any([cp.vl["BCM_1"]["DOOR_OPEN_FL"],
                         cp.vl["BCM_1"]["DOOR_OPEN_FR"],

selfdrive/car/chrysler/interface.py

@@ -1,10 +1,12 @@
 #!/usr/bin/env python3
 from cereal import car
 from panda import Panda
-from openpilot.selfdrive.car import get_safety_config
+from openpilot.selfdrive.car import create_button_events, get_safety_config
 from openpilot.selfdrive.car.chrysler.values import CAR, RAM_HD, RAM_DT, RAM_CARS, ChryslerFlags
 from openpilot.selfdrive.car.interfaces import CarInterfaceBase
 
+ButtonType = car.CarState.ButtonEvent.Type
+
 
 class CarInterface(CarInterfaceBase):
   @staticmethod
@@ -76,6 +78,8 @@ class CarInterface(CarInterfaceBase):
   def _update(self, c):
     ret = self.CS.update(self.cp, self.cp_cam)
 
+    ret.buttonEvents = create_button_events(self.CS.distance_button, self.CS.prev_distance_button, {1: ButtonType.gapAdjustCruise})
+
     # events
     events = self.create_common_events(ret, extra_gears=[car.CarState.GearShifter.low])