Arduino library for using the Vishay VCNL4010 sensor. The sensor is a fully integrated proximity and ambient light sensor with infrared emitter, I2C interface and interrupt function in a small package. It is available as a breakout board from Adafruit at https://www.adafruit.com/product/466. The VCNL4010 datasheet can be found at http://www.vishay.com/docs/83462/vcnl4010.pdf.
The ambient light sensor (ALS) returns a 16-bit value starting at close to 0 for no light and goes upwards as the light level increases.
The proximity sensor has a range of approximately 200mm (2 cm, or 3/4 of an inch) and goes from 65536 when the closest reflector is touching the device to a value of around 2000 when nothing is being reflected in range.
A detailed library description and further details are available at the GitHub VCNL4010 Wiki
