> But sorry I do not understand how it works. > Do you have any example code ? I'd prefer to answer on the Microchip forum, same as where the writeup I posted a link to is. Ask in that thread or start a new one. ******************************************************************** Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products (978) 742-9014. Gold level PIC consultants since 2000. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist