[Lazarus] Accessing GPIO on RaspberryPi2 from Lazarus/FPC

[Alfred]

Please have a look at:
http://www.afterwarp.net/products/pxl
https://github.com/yunkot/pxl

Forum post:
http://forum.lazarus.freepascal.org/index.php/topic,29852.0.html?PHPSESSID=bf43911005bf788ab072b3d73d1bfb4f

Pxl is a very well written library, capable of doing a lot, with the 
inclusion of hardware access on RPi(2) !

See sample:
https://github.com/yunkot/pxl/tree/master/Samples/FreePascal/SingleBoard/RaspberryPI