Scott, Sorry I do not know much about isochronous I know that isochronous is used on transmit and receive Application where each data contains speed information Etc but I never used it before needs more studding. Using loop is not going to work in my application Because of background code shouldn't stop. Andre -----Original Message----- Scott Dattalo wrote: > I wanted to suggest the isochronous approach earlier, but > I'm not sure I understand what Andre really wants. If he's > beating his head against a simple interrupt issue, then I'm > not sure how or if isochronous coding will make his life > easier... It could, perhaps. It seems, that at current level of his app development he might want to try just a simplest loop. Mike. -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics