> > some time ago Olin suggested a Master/Slave setup for sending data
> > between PC and PIC project for flow control.
> >
> > I would like any suggestions on how to implement such an
> approach as i
> > cant use XON/XOFF as those values are possible sent values
> and I used
> > the simple 3 wire connection so no hardware flow control.

My original WISP programmer used a very simple protocol where the PC
sends a character, the PIC echoes either this character or a different
character, and the PC proceeds with the next character only when the
echo of the previous char has been received. On DOS this was quite
effective, but on windows (using windows calls) this is very slow. But
when performance is not important it is still a very simple and robuust
protocol.

Wouter van Ooijen

-- -------------------------------------------
Van Ooijen Technische Informatica: www.voti.nl
consultancy, development, PICmicro products

--
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