I would like to see the code.  I don't understand from your description.

Kerry


jim@jpes.com wrote:
>  All,
>
>  I have been working with a rotary encoder that I am planning to use as
> a control for a piece of test=20
>  equipment at work.  I have looked on the web for algorithms to decode
> the outputs of said encoder,=20
>  and have found several.  Most of them work as advertised in my
> application, but I have come up with a=20
>  version that works very well in my opinion.
>
>  I don't know whether it is new or novel, but all I have done is watch
> for the "A" output to go high.
>  When it does, I then read the port that the encoder is attached to.  I
> mask of the bits I am interested=20
>  in, and use this as an index into a table.  If the value is "01" I add
> "1" to my variable.  If the value=20
>  is "10", I subtract "1" by adding 255.  Any other combination "00" or
> "11" adds a zero for no change.
>
>  I have tried this out spinning the knob on the encoder as fast as I
> can, and I can't see any missed=20
>  counts.  I am using a delay of 2.5 mS in my routine for debouncing. =20
>
>  If anyone is interested, I can post the code.  But my guess is I have
> just on my own rediscovered an old=20
>  method of decoding rotary encoders.
>
> =20
>  Regards,
>
>  Jim
>
>
>
>  =20

--=20
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist
.