Bob Japundza <PICLIST@mitvma.mit.edu> wrote:

> Andy, just one question.  How would you change the code to handle
> a 10-bit a/d sample?  Probably not necessary in the case where I'm
> determining fuel level (1/256 is plenty of resolution), but I'm
> curious if it can be done yet kept simple.

    Bob:

    The code wouldn't be AS simple, but it certainly wouldn't be
    complicated; the fast that the moving window is 256 samples wide
    is the real key to making the implementation easy.

> I suppose I could really make the fuel gauge rock-steady by using
> this algorithm along with sampling around 250ms or so...

    Yes.  A 256-sample window, with a sample taken 4 times per
    second, gives you a 64-second-wide window.  If that's too wide,
    and you want to narrow the window without affecting the
    simplicity of the code, just call the filter routine multiple
    times per sample.

    -Andy

=== Andrew Warren -- aiw@cypress.com
=== Principal Design Engineer
=== Cypress Semiconductor Corporation
===
=== Opinions expressed above do not
=== necessarily represent those of
=== Cypress Semiconductor Corporation

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