andre abelian wrote: > I guess mastering (interrupt service routine) is not easy. > Even I get precise timing after adding more codes timing > gets changed; more adjustments needed more changes needed. > > I also found one more problem with mplab 6.22. Using same > code with mplab 6.22 will generate different timing on > timer0 then mplab 6.30 does. Is this interrupt's hassle really needed? Google with: "Timer polling Scott Dattalo" or "isochronous code Scott Dattalo" 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