>I want the 'hot' limit to be changable; maybe 200..250 dont know values
>until tested. Same for 'cold' limit, 0..50 perhaps.So <128 is a bit coarse.

Well, whatever you want it to be; I just gave 128 as an example.  You could
use a filtering method to achieve a running average.  If you wanted to take
an average over a multiple of 256 points, I think that's easy, if I remember
correctly.  There is a 256-bit filtering method on the PICLIST archives; I
think it's only ~12 instructions.  You could keep result (majority 1 or 0)
in another register.

>I figured I need 32bit math so it wont overflow... from all the polls.
>It will be alot of 32bit add/subtract/compares. Hot/cold limits, max value,
>leds etc
>I want a linear indication of the level, preferably in the range of 0-255.
>Since the current measured level is to be shown on 5 LEDs always. Very
>pretty ;)
>0-50 LED1
>50-100 LED2
>100-150 LED3
>150-200 LED4
>200-250 LED5

As long as your inputs are reliable enough to use this sort of resolution,
you'll be fine.  Of course, consider this:

11111101111111011111101111....
would be LED5, *unless* you only polled during the '0' output due to your
polling only every 1024 pulses.

or

0000000100000100000010000....
you get the idea.

--Andrew
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