Bob Ammerman wrote:
> This is not the case if you start 'listening' to the data in
> mid-stream. Your receiver can easily get confused about what is a
> start bit, and end up with a bunch of framing errors. This is usually
> self correcting after a reasonably short period of time, but I have
> seen cases where it went on merrily out of sync indefinitely (it all
> depends on the data and the receiver implementation.)

Note that a single 0 or FFh byte forces byte synchronization.  Each of these
contain only a single rising edge, which is the leading edge of the start
bit.  There are a total of 9 codes that have this property.  Any one of them
will guarantee byte synchronization for the following byte.


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