Hyundai CAN: Log ABS/ESP Activation to `espActive` (#32743)

* Hyundai CAN: Log active ABS to accFaulted

* Add comments

* `espActive` to CarState and CarEvent.EventName

* re-order

---------

Co-authored-by: Shane Smiskol <shane@smiskol.com>

cereal/car.capnp

@@ -116,6 +116,7 @@ struct CarEvent @0x9b1657f34caf3ad3 {
     paramsdTemporaryError @50;
     paramsdPermanentError @119;
     actuatorsApiUnavailable @120;
+    espActive @121;
 
     radarCanErrorDEPRECATED @15;
     communityFeatureDisallowedDEPRECATED @62;
@@ -194,6 +195,7 @@ struct CarState {
   espDisabled @32 :Bool;
   accFaulted @42 :Bool;
   carFaultedNonCritical @47 :Bool;  # some ECU is faulted, but car remains controllable
+  espActive @51 :Bool;
 
   # cruise state
   cruiseState @10 :CruiseState;

selfdrive/car/hyundai/carstate.py

@@ -119,6 +119,7 @@ class CarState(CarStateBase):
     ret.brakeHoldActive = cp.vl["TCS15"]["AVH_LAMP"] == 2  # 0 OFF, 1 ERROR, 2 ACTIVE, 3 READY
     ret.parkingBrake = cp.vl["TCS13"]["PBRAKE_ACT"] == 1
     ret.espDisabled = cp.vl["TCS11"]["TCS_PAS"] == 1
+    ret.espActive = cp.vl["TCS11"]["ABS_ACT"] == 1
     ret.accFaulted = cp.vl["TCS13"]["ACCEnable"] != 0  # 0 ACC CONTROL ENABLED, 1-3 ACC CONTROL DISABLED
 
     if self.CP.flags & (HyundaiFlags.HYBRID | HyundaiFlags.EV):

selfdrive/car/interfaces.py

@@ -280,6 +280,8 @@ class CarInterfaceBase(ABC):
       events.add(EventName.wrongCarMode)
     if cs_out.espDisabled:
       events.add(EventName.espDisabled)
+    if cs_out.espActive:
+      events.add(EventName.espActive)
     if cs_out.stockFcw:
       events.add(EventName.stockFcw)
     if cs_out.stockAeb:

selfdrive/controls/lib/events.py

@@ -831,6 +831,11 @@ EVENTS: dict[int, dict[str, Alert | AlertCallbackType]] = {
     ET.NO_ENTRY: NoEntryAlert("Cruise Fault: Restart the Car"),
   },
 
+  EventName.espActive: {
+    ET.IMMEDIATE_DISABLE: ImmediateDisableAlert("Electronic Stability Control Active"),
+    ET.NO_ENTRY: NoEntryAlert("Electronic Stability Control Active"),
+  },
+
   EventName.controlsMismatch: {
     ET.IMMEDIATE_DISABLE: ImmediateDisableAlert("Controls Mismatch"),
     ET.NO_ENTRY: NoEntryAlert("Controls Mismatch"),