It occurs to me this would make a good "joint" programming  challenge
for the wizards on this list.  Code a Manchester decoder (preferably
without interrupts) in as few instructions as possible.  Ideally, the
clock speed of the bit stream should be irrelevant so another device
talking to the decoder would not have to worry about stringent timing
requirements.

This would be a usefull addition to most peoples "toolbox", a 1 pin
solution for sending data to a PIC, with the timing insensitivity of
I2C, but again, with only one pin.  Of course, it would not be a "BUS"
like I2C, just a one way serial link.  This would probably be very
useful in IR and RF link apps too.

Any takers?

Martin.

On Fri, 9 Jan 1998 15:13:26 -0600, John Payson <supercat@MCS.NET>
wrote:
><SNIP>
>
>If people use PLL's to sync on "the middle" of bits, all the more power
>to them; even with Manchester coding as you describe it, though, I'd think
>it easier and more reliable to read things as long and short pulses, and
>then try to interpret the long/short pulse strings.


Martin R. Green
elimar@NOSPAMbigfoot.com

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