Loading automotive/vehicle/aidl/aidl_api/android.hardware.automotive.vehicle/current/android/hardware/automotive/vehicle/VehicleProperty.aidl +1 −0 Original line number Diff line number Diff line Loading @@ -105,6 +105,7 @@ enum VehicleProperty { EV_BATTERY_DISPLAY_UNITS = 289408515, FUEL_CONSUMPTION_UNITS_DISTANCE_OVER_VOLUME = 287311364, VEHICLE_SPEED_DISPLAY_UNITS = 289408517, EXTERNAL_CAR_TIME = 290457096, ANDROID_EPOCH_TIME = 290457094, STORAGE_ENCRYPTION_BINDING_SEED = 292554247, ENV_OUTSIDE_TEMPERATURE = 291505923, Loading automotive/vehicle/aidl/android/hardware/automotive/vehicle/VehicleProperty.aidl +45 −0 Original line number Diff line number Diff line Loading @@ -1034,6 +1034,51 @@ enum VehicleProperty { */ VEHICLE_SPEED_DISPLAY_UNITS = 0x0605 + 0x10000000 + 0x01000000 + 0x00400000, // VehiclePropertyGroup:SYSTEM,VehicleArea:GLOBAL,VehiclePropertyType:INT32 /** * Current date and time suggestion for the Car, encoded as Epoch time * (in milliseconds). This value denotes the number of milliseconds seconds * that have elapsed since 1/1/1970 UTC. * * This property signals a change in CarTime to Android. If the property is supported, VHAL * must report the most accurate current CarTime when this property is read, and publish a * change to this property when the CarTime value has changed. An on-change event for this * property must be published when CarTime changes for any reason other than the natural elapse * of time (time delta smaller than 500ms should not trigger an on change event). Android will * read and subscribe to this property to fetch time from VHAL. This can be useful to * synchronize Android's time with other vehicle systems (dash clock etc). * int64Values[0] = provided Epoch time (in milliseconds) * * Whenever a new Value for the property is received, AAOS will create * and send an "ExternalTimeSuggestion" to the "TimeDetectorService". * If other sources do not have a higher priority, Android will use this * to set the system time. For information on how to adjust time source * priorities and how time suggestions are handled (including how Android * handles gitter, drift, and minimum resolution) see Time Detector Service * documentation. * * Note that the property may take >0 ms to get propagated through the stack * and, having a timestamped property helps reduce any time drift. So, * for all reads to the property, the timestamp can be used to negate this * drift: * drift = elapsedTime - PropValue.timestamp * effectiveTime = PropValue.value.int64Values[0] + drift * * It is strongly recommended that this property must not be used to retrieve * time from ECUs using protocols (GNSS, NTP, Telephony etc). Since these * protocols are already supported by Android, it is recommended to use * Android’s own systems for them instead of wiring those through the VHAL * using this property. * * WARNING: The value available through this property should not be dependent * on value written by Android to ANDROID_EPOCH_TIME property in any way. * * @change_mode VehiclePropertyChangeMode:ON_CHANGE * @access VehiclePropertyAccess:READ_ONLY * @unit VehicleUnit:MILLI_SECS */ EXTERNAL_CAR_TIME = 0x0608 + 0x10000000 // VehiclePropertyGroup:SYSTEM + 0x01000000 // VehicleArea:GLOBAL + 0x00500000, // VehiclePropertyType:INT64 /** * Current date and time, encoded as Epoch time (in milliseconds). * This value denotes the number of milliseconds seconds that have Loading Loading
automotive/vehicle/aidl/aidl_api/android.hardware.automotive.vehicle/current/android/hardware/automotive/vehicle/VehicleProperty.aidl +1 −0 Original line number Diff line number Diff line Loading @@ -105,6 +105,7 @@ enum VehicleProperty { EV_BATTERY_DISPLAY_UNITS = 289408515, FUEL_CONSUMPTION_UNITS_DISTANCE_OVER_VOLUME = 287311364, VEHICLE_SPEED_DISPLAY_UNITS = 289408517, EXTERNAL_CAR_TIME = 290457096, ANDROID_EPOCH_TIME = 290457094, STORAGE_ENCRYPTION_BINDING_SEED = 292554247, ENV_OUTSIDE_TEMPERATURE = 291505923, Loading
automotive/vehicle/aidl/android/hardware/automotive/vehicle/VehicleProperty.aidl +45 −0 Original line number Diff line number Diff line Loading @@ -1034,6 +1034,51 @@ enum VehicleProperty { */ VEHICLE_SPEED_DISPLAY_UNITS = 0x0605 + 0x10000000 + 0x01000000 + 0x00400000, // VehiclePropertyGroup:SYSTEM,VehicleArea:GLOBAL,VehiclePropertyType:INT32 /** * Current date and time suggestion for the Car, encoded as Epoch time * (in milliseconds). This value denotes the number of milliseconds seconds * that have elapsed since 1/1/1970 UTC. * * This property signals a change in CarTime to Android. If the property is supported, VHAL * must report the most accurate current CarTime when this property is read, and publish a * change to this property when the CarTime value has changed. An on-change event for this * property must be published when CarTime changes for any reason other than the natural elapse * of time (time delta smaller than 500ms should not trigger an on change event). Android will * read and subscribe to this property to fetch time from VHAL. This can be useful to * synchronize Android's time with other vehicle systems (dash clock etc). * int64Values[0] = provided Epoch time (in milliseconds) * * Whenever a new Value for the property is received, AAOS will create * and send an "ExternalTimeSuggestion" to the "TimeDetectorService". * If other sources do not have a higher priority, Android will use this * to set the system time. For information on how to adjust time source * priorities and how time suggestions are handled (including how Android * handles gitter, drift, and minimum resolution) see Time Detector Service * documentation. * * Note that the property may take >0 ms to get propagated through the stack * and, having a timestamped property helps reduce any time drift. So, * for all reads to the property, the timestamp can be used to negate this * drift: * drift = elapsedTime - PropValue.timestamp * effectiveTime = PropValue.value.int64Values[0] + drift * * It is strongly recommended that this property must not be used to retrieve * time from ECUs using protocols (GNSS, NTP, Telephony etc). Since these * protocols are already supported by Android, it is recommended to use * Android’s own systems for them instead of wiring those through the VHAL * using this property. * * WARNING: The value available through this property should not be dependent * on value written by Android to ANDROID_EPOCH_TIME property in any way. * * @change_mode VehiclePropertyChangeMode:ON_CHANGE * @access VehiclePropertyAccess:READ_ONLY * @unit VehicleUnit:MILLI_SECS */ EXTERNAL_CAR_TIME = 0x0608 + 0x10000000 // VehiclePropertyGroup:SYSTEM + 0x01000000 // VehicleArea:GLOBAL + 0x00500000, // VehiclePropertyType:INT64 /** * Current date and time, encoded as Epoch time (in milliseconds). * This value denotes the number of milliseconds seconds that have Loading
