2013/8/21 GRENON Loïc <difool@xxxxxxxx>: > Hi guys, > > I want to interface a magnetic scale position sensor with a BeagleBone Black > (an ARM development platform). > While I was reading this following article : > http://bwgz57.wordpress.com/2012/04/11/beaglebone-with-a-rotary-encoder/ I > discovered that linux has built-in support for rotary encoders connected via > GPIO. > > The magnetic scale position sensor can be considered like a rotary encoder > so I would use the rotary_encoder platform device driver. > > I've read the code example at the end of this document : > https://www.kernel.org/doc/Documentation/input/rotary-encoder.txt > But I don't know how to access to the "pos" value of the rotary encoder. > > Do you have some code example of use of this driver ? Or anything that can > be helpful for me. > As the rotary encoder is an input device it is accessible via /dev/input/eventX where X is a number. Have a look at evtest user space application. greets -- Christian Gmeiner, MSc -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
