PicDude wrote:
> Okay, that seems like a surprisingly simple solution to this problem.
> I'm evaluating on paper for now, and can't see it working well with 4x
> the bit rate, but 5x seems to work well... so far. This is assuming
> minimal error for now, but I'll try factoring in a few percent error
> to see how 5x would handle it. What's nice is that the ISR processing
> for this is indeed very minimal, so a faster sample rate is fine.

Like I said, the interval depends on the exact characteristics of the data
you're trying to decode.

Actully, I misspoke. Suppose the data is high for 40% of the bit interval
for a zero, and 60% for a one. In that case, you'd need to sample with a
period that is less than -- with some margin -- 20% of the bit interval in
order to reliably resolve the difference. 

-- Dave Tweed
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