Ford long control improvements (#31123)

* Ford updates

* back to normal

* Small fixes

* Try max

* Does pred matter

* ref commit

* Update ref
old-commit-hash: feaf52dd4c1f1b406b068e195fa48f3daf0b67ed

selfdrive/car/ford/carcontroller.py

@@ -1,10 +1,10 @@
 from cereal import car
 from openpilot.common.numpy_fast import clip
-from openpilot.common.conversions import Conversions as CV
 from opendbc.can.packer import CANPacker
 from openpilot.selfdrive.car import apply_std_steer_angle_limits
 from openpilot.selfdrive.car.ford import fordcan
 from openpilot.selfdrive.car.ford.values import CANFD_CAR, CarControllerParams
+from openpilot.selfdrive.controls.lib.drive_helpers import V_CRUISE_MAX
 
 LongCtrlState = car.CarControl.Actuators.LongControlState
 VisualAlert = car.CarControl.HUDControl.VisualAlert
@@ -90,7 +90,7 @@ class CarController:
       if not CC.longActive or gas < CarControllerParams.MIN_GAS:
         gas = CarControllerParams.INACTIVE_GAS
       stopping = CC.actuators.longControlState == LongCtrlState.stopping
-      can_sends.append(fordcan.create_acc_msg(self.packer, self.CAN, CC.longActive, gas, accel, stopping, v_ego_kph=40 * CV.MPH_TO_KPH))
+      can_sends.append(fordcan.create_acc_msg(self.packer, self.CAN, CC.longActive, gas, accel, stopping, v_ego_kph=V_CRUISE_MAX))
 
     ### ui ###
     send_ui = (self.main_on_last != main_on) or (self.lkas_enabled_last != CC.latActive) or (self.steer_alert_last != steer_alert)

selfdrive/car/ford/fordcan.py

@@ -127,13 +127,12 @@ def create_acc_msg(packer, CAN: CanBus, long_active: bool, gas: float, accel: fl
 
   Frequency is 50Hz.
   """
-
   decel = accel < 0 and long_active
   values = {
     "AccBrkTot_A_Rq": accel,                          # Brake total accel request: [-20|11.9449] m/s^2
     "Cmbb_B_Enbl": 1 if long_active else 0,           # Enabled: 0=No, 1=Yes
     "AccPrpl_A_Rq": gas,                              # Acceleration request: [-5|5.23] m/s^2
-    "AccPrpl_A_Pred": gas,                            # Acceleration request: [-5|5.23] m/s^2
+    "AccPrpl_A_Pred": -5.0,                           # Acceleration request: [-5|5.23] m/s^2
     "AccResumEnbl_B_Rq": 1 if long_active else 0,
     "AccVeh_V_Trg": v_ego_kph,                        # Target speed: [0|255] km/h
     # TODO: we may be able to improve braking response by utilizing pre-charging better

selfdrive/car/ford/interface.py

@@ -21,6 +21,10 @@ class CarInterface(CarInterfaceBase):
     ret.steerActuatorDelay = 0.2
     ret.steerLimitTimer = 1.0
 
+    ret.longitudinalTuning.kpBP = [0.]
+    ret.longitudinalTuning.kpV = [0.5]
+    ret.longitudinalTuning.kiV = [0.]
+
     CAN = CanBus(fingerprint=fingerprint)
     cfgs = [get_safety_config(car.CarParams.SafetyModel.ford)]
     if CAN.main >= 4:

selfdrive/test/process_replay/ref_commit

@@ -1 +1 @@
-58ef40eb2264a9d62a1715486677c342d5d113ce
+6a61df84e67e3177f0ba73865a1bb239385c0ade