Is there any way to retrieve display brightness and light sensor value of iPhone?

Question

Is there any way to retrieve display brightness and light sensor value of iPhone?

Suppose i have a jailbroken iPhone. Either command line of ssh or object-C code are acceptable.

Answer 1

Located in private BackBoardServices.framework:

float BKSDisplayBrightnessGetCurrent();

As for light sensor, couldn't find any methods to retrieve it's value. There're only three methods: check for existance of the sensor, enable/disable auto-brightness.

Answer 2

A common workaround for getting an approximation of the light sensor value is through:

NSLog(@"Screen Brightness: %f",[[UIScreen mainScreen] brightness]);

But there is no API to access the ambient light sensor directly.