>        I have done soft-uarts using just 1x sampling.
>        Detected the start-bit with an edge interrupt, set the next timer
> interrupt for 1.5 bit-time and the other interrupts for one bit-time.
>
>        Never had a single problem but never used on noisy signals.
>
>        Mark Jordan
>
>

I've done this with a PICkit 2. (18f2550 @ 48 MHz Fosc.)  I needed two
read-only channels with timing information to act as a protocol
analyzer between two devices.  it worked fine but needed a nice clean
signal (no oversamping).  I was able to capture at baudrates up to
115200, but only for short messages.  (I had a 256-byte circular
buffer and was using HID code).  Someday I'll clean up the code and
get it on my weblog.

Regards,
Mark
markrages@gmail
-- 
Mark Rages, Engineer
Midwest Telecine LLC
markrages@midwesttelecine.com
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