replacement CM11a firmware available

[ddl@danlan.*com (Dan Lanciani)]

I have made available on www.danlan.com/homeauto.html source for replacement
firmware for the CM11a along with a unix daemon that provides my standard
tcp/ip interface.

The replacement firmware is in no way compatible with the OEM firmware and
also requires certain pins to be rerouted between the PIC and CM11a board.

The firmware provides a low-level interface to the power line.  Received
bits are grouped 6 at a time and sent to the host.  The host transmits
by specifying a bit string and a repeat count.  All encoding/decoding is
done in the host.  Normally once the host has seen 7 or more zero bits
further zeroes are suppressed, but for full real-time analysis a flag is
provided to force all bits to be transferred.  An additional flag is
available to disable three-phase transmission support and the supplied
daemon sets this flag by default.

I've been running this code for a few days but it should of course be
considered preliminary.  Further documentation will be available depending
on the level of interest...

				Dan Lanciani
				ddl@danlan.*com