I think the exmaple is not for the arm board look here http://www.nabble.com/forum/ViewPost.jtp?post=5574532&framed=y martin -- View this message in context: http://www.nabble.com/Blinking-LED-on-Ethernut-3-tf3832960.html#a10939883 Sent from the MicroControllers - Ethernut mailing list archive at Nabble.com.