HVAC_SEAT_VENTILATION
What it is
Seat ventilation
The maxInt32Value and minInt32Value in VehicleAreaConfig must be defined. All integers between minInt32Value and maxInt32Value must be supported.
The minInt32Value must be 0. The maxInt32Value indicates the maximum ventilation setting available for the seat.
This property is not in any particular unit but in the specified range of ventilation settings.
Used by HVAC apps and Assistant to enable, change, or read state of seat ventilation. This is different than seating cooling. It can be on at the same time as cooling, or not.
This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs have the option to implement it as VehiclePropertyAccess.READ only.
How the ID is built
A property ID is a 32-bit value packing four fields. Reading 0x15400513 apart:
| Field | Mask | Value | Means |
|---|---|---|---|
| Group | 0xf0000000 | 0x10000000 | SYSTEM |
| Area | 0x0f000000 | 0x05000000 | SEAT |
| Type | 0x00ff0000 | 0x00400000 | INT32 |
| Ordinal | 0x0000ffff | 0x00000513 | 0x513 |
Reading it from an app
CarPropertyManager mgr = (CarPropertyManager)
car.getCarManager(Car.PROPERTY_SERVICE);
int value =
mgr.getIntProperty(VehiclePropertyIds.HVAC_SEAT_VENTILATION, areaId);This property can be read and written, though an OEM may implement it as read-only. It fires a callback whenever the value changes.