Toyota TSS2: parse distance button (#31722)

* Enable the distance button to switch personalities for Toyota/Lexus

* Default to the "standard" personality for now

* only parsing first

* only parse

* no personality in card

* safe

* comment

---------

Co-authored-by: Shane Smiskol <shane@smiskol.com>
old-commit-hash: a2de0115b3

selfdrive/car/toyota/carstate.py

@@ -40,6 +40,9 @@ class CarState(CarStateBase):
     self.accurate_steer_angle_seen = False
     self.angle_offset = FirstOrderFilter(None, 60.0, DT_CTRL, initialized=False)
 
+    self.prev_distance_button = 0
+    self.distance_button = 0
+
     self.low_speed_lockout = False
     self.acc_type = 1
     self.lkas_hud = {}
@@ -163,6 +166,11 @@ class CarState(CarStateBase):
     if self.CP.carFingerprint != CAR.PRIUS_V:
       self.lkas_hud = copy.copy(cp_cam.vl["LKAS_HUD"])
 
+    # distance button is wired to the ACC module (camera or radar)
+    if self.CP.carFingerprint in (TSS2_CAR - RADAR_ACC_CAR):
+      self.prev_distance_button = self.distance_button
+      self.distance_button = cp_acc.vl["ACC_CONTROL"]["DISTANCE"]
+
     return ret
 
   @staticmethod

selfdrive/car/toyota/interface.py

@@ -3,10 +3,11 @@ from panda import Panda
 from panda.python import uds
 from openpilot.selfdrive.car.toyota.values import Ecu, CAR, DBC, ToyotaFlags, CarControllerParams, TSS2_CAR, RADAR_ACC_CAR, NO_DSU_CAR, \
                                         MIN_ACC_SPEED, EPS_SCALE, UNSUPPORTED_DSU_CAR, NO_STOP_TIMER_CAR, ANGLE_CONTROL_CAR
-from openpilot.selfdrive.car import get_safety_config
+from openpilot.selfdrive.car import create_button_events, get_safety_config
 from openpilot.selfdrive.car.disable_ecu import disable_ecu
 from openpilot.selfdrive.car.interfaces import CarInterfaceBase
 
+ButtonType = car.CarState.ButtonEvent.Type
 EventName = car.CarEvent.EventName
 SteerControlType = car.CarParams.SteerControlType
 
@@ -172,6 +173,9 @@ class CarInterface(CarInterfaceBase):
   def _update(self, c):
     ret = self.CS.update(self.cp, self.cp_cam)
 
+    if self.CP.carFingerprint in (TSS2_CAR - RADAR_ACC_CAR):
+      ret.buttonEvents = create_button_events(self.CS.distance_button, self.CS.prev_distance_button, {1: ButtonType.gapAdjustCruise})
+
     # events
     events = self.create_common_events(ret)