Update AUTOMATIC_EMERGENCY_BRAKING_ENABLED documentation in HAL
Temporary errors should be conveyed through ErrorState values in the
STATE property.
Bug: 264336118
Test: presubmit
Change-Id: I28de0aceaabb33647085d80b79da215da4a146cf
diff --git a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleProperty.aidl b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleProperty.aidl
index 803e093..269408e 100644
--- a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleProperty.aidl
+++ b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleProperty.aidl
@@ -3457,9 +3457,10 @@
* Set true to enable AEB and false to disable AEB. When AEB is enabled, the ADAS system in the
* vehicle should be turned on and monitoring to avoid potential collisions.
*
- * If AEB is not available, IVehicle#get must not return any NOT_AVAILABLE value in StatusCode.
- * Other StatusCode values like TRY_AGAIN may still be used as needed. For example, if AEB is
- * not available because the vehicle speed is too low, IVehicle#get must return false.
+ * In general, AUTOMATIC_EMERGENCY_BRAKING_ENABLED should always return true or false. If the
+ * feature is not available due to some temporary state, such as the vehicle speed being too
+ * low, that information must be conveyed through the ErrorState values in the
+ * AUTOMATIC_EMERGENCY_BRAKING_STATE property.
*
* This property is defined as read_write, but OEMs have the option to implement it as read
* only.