FOG_LIGHTS_SWITCH
What it is
Fog light switch
The setting that the user wants.
If the car has both front and rear fog lights: If front and rear fog lights can only be controlled together: FOG_LIGHTS_SWITCH must be implemented. FRONT_FOG_LIGHTS_SWITCH and REAR_FOG_LIGHTS_SWITCH must not be implemented.
If the front and rear fog lights can only be controlled independently: FOG_LIGHTS_SWITCH must not be implemented. FRONT_FOG_LIGHTS_SWITCH and REAR_FOG_LIGHTS_SWITCH must be implemented.
If the car has only front fog lights: Only one of FOG_LIGHTS_SWITCH or FRONT_FOG_LIGHTS_SWITCH must be implemented and not both. REAR_FOG_LIGHTS_SWITCH must not be implemented.
If the car has only rear fog lights: Only one of FOG_LIGHTS_SWITCH or REAR_FOG_LIGHTS_SWITCH must be implemented and not both. FRONT_FOG_LIGHTS_SWITCH must not be implemented.
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 0x11400e12 apart:
| Field | Mask | Value | Means |
|---|---|---|---|
| Group | 0xf0000000 | 0x10000000 | SYSTEM |
| Area | 0x0f000000 | 0x01000000 | GLOBAL |
| Type | 0x00ff0000 | 0x00400000 | INT32 |
| Ordinal | 0x0000ffff | 0x00000e12 | 0xe12 |
Reading it from an app
CarPropertyManager mgr = (CarPropertyManager)
car.getCarManager(Car.PROPERTY_SERVICE);
int value =
mgr.getIntProperty(VehiclePropertyIds.FOG_LIGHTS_SWITCH, 0);This property can be read and written, though an OEM may implement it as read-only. It fires a callback whenever the value changes.