> The interrupt has a 1 mS trigger. The ISR keeps a count of 200
> (hopefully finally counting down instead of counting up as the last
> several iterations of his code has done) to generate a 200 mS
> trigger

I probably planted the counting-up seed, early on showing him
reloading with -ve numbers

It's a legitimate way to do it though, one of at least four.

But I wouldn't frustrate your efforts to use count-down and get some
sort of rationale into the code. I remember how it took a little time to
learn, and appreciate the benefit of, logical planning for my first=20
projects.

Fortunately it's a mind-set that stays with you and becomes second
nature so I really hope EC gets this project into shape in a way which
will serve him better than what might currently be several bird's nests
tied up with string

I'm sure we've all had one of those, and not terribly pleased with it

Joe=20

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