HVAC & climate

HVAC_FAN_SPEED

What it is

Fan speed setting

The maxInt32Value and minInt32Value in VehicleAreaConfig must be defined. All integers between minInt32Value and maxInt32Value must be supported.

The minInt32Value indicates the lowest fan speed. The maxInt32Value indicates the highest fan speed.

This property is not in any particular unit but in a specified range of relative speeds.

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 0x15400500 apart:

Field	Mask	Value	Means
Group	0xf0000000	0x10000000	SYSTEM
Area	0x0f000000	0x05000000	SEAT
Type	0x00ff0000	0x00400000	INT32
Ordinal	0x0000ffff	0x00000500	0x500

Reading it from an app

CarPropertyManager mgr = (CarPropertyManager)
        car.getCarManager(Car.PROPERTY_SERVICE);

int value =
        mgr.getIntProperty(VehiclePropertyIds.HVAC_FAN_SPEED, 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.