On Mon, Mar 9, 2015 at 5:45 PM, Jonathan Cameron <jic23@xxxxxxxxxx> wrote: > On 02/03/15 19:03, Kevin Tsai wrote: >> Hi Daniel, >> >> Ambient light sensor is trying to match the brightness sensitivity of human visual system. Please see the following links: >> http://en.wikipedia.org/wiki/Color_vision#mediaviewer/File:Eyesensitivity.svg >> http://en.wikipedia.org/wiki/Color_vision >> >> You can compare the spectrum with the datasheet. The green channel is matched with ALS spectrum. > It's close (ish) to the right measurement, but it isn't the right measurement. As such > I'd argue we leave it up to userspace to make the jump and use Green if a true estimate > if illuminance isn't available, but don't suggest it is available from the kernel. Ok, I will respin the patch with this in mind. thanks, Daniel. -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
