Please review http://wiki.laptop.org/go/Light_Sensor
On Mon, Aug 29, 2011 at 07:06:32PM +0200, Bert Freudenberg wrote: > And the blink rate is proportional to the light sensed? Why? The sensor is a reverse biased LED. The LED is charged in reverse polarity, which makes the junction behave like a capacitor. The discharge time is related to the amount of light falling on the LED. > > Add compass driver for LSM303DLH. > > xo_175_defconfig: Enable magnetometer/compass. > > olpc-xo-1-75.c: Add compass support > > Is the compass exposed, too? Yes, but you probably don't have one, and probably won't see one because the magnet on the left lower corner of the laptop is incompatible with use of a compass. It is a handy magnet for holding USB drives though. ;-) > Is there a list of all the sensors and how to access them somewhere? Not that I know of. Good idea. http://wiki.laptop.org/go/XO-1.75#Integrated_peripherals should be our list. But we don't have a list of how to access the sensors. Check out /dev/input/event* as well, some of them are interesting, like headphone jack plug events. -- James Cameron http://quozl.linux.org.au/ _______________________________________________ Devel mailing list [email protected] http://lists.laptop.org/listinfo/devel
