Linearizing an LED for 800 pwm steps'?

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  1. - 27th February 2012, 12:19 #9
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    spcw1234
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    Default Re: Linearizing an LED for 800 pwm steps'?

    What if you keep all the values below 256 and do multiple lookup tables with some simple maths.

    ex.

    if X<256 then lookup X, [0,...255],duty
    if X>255 and X<512 then lookup X-256, [0,...255],duty
    if X>511 and X<768 then lookup X-512, [0,...255],duty
    if X>767 then lookup X-768, [0,...255],duty

    You will loose some resolution in the upper bits, but that is where it doesn't matter for this application.
    Last edited by spcw1234; - 27th February 2012 at 12:22.
    Shawn
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