On 28 Sep 2005, at 04:24, Jamie Risk wrote:
I've been trying to develop a small software based character UART.
Eight (8) bit characters have one start bit (a zero) one stop bit
(a one) and one odd bit of parity. Idle states are a one, so
getting 100's of ones in a row is acceptable. The acceptable
format is:
Bison is not built for the kind of problem. You might be able to do
it with Flex. For example, you could have a loop scanning for the
first '0', and when it arrives, you set a start condition for a rule
picking down the next ten characters. If there is something wrong
with them, put them back, and rescan; otherwise output re character.
Hans Aberg
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