>You should check for the line being high (i.e. in the stop bit time) >before you start looking for the start bit transition. (Please don't >ask how I know this. It's too embarassing.) > > >Regards, Bob Heh, I can vouch for that one! I once did that in hardware! Barry -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads