Polling the accelerometer/motion sensor in a MacBook Pro

Question

There is a compiled command line application here that does this.

Is there a Cocoa API to query this data?

Answer 1

You can try SMSLib, which is an open-source Objective-C library for accessing the sudden motion sensor.

Answer 2

There isn't a Cocoa API for the motion sensor. It's only available through calls to IOKit. It's described in Mac OS X Internals.