Re: replacement CM11a firmware available

["Jeff Volp" <JeffVolp@xxxxxxx>]

Since a lot of people still use the discontinued CM11A as the powerline
interface for PC-based automation software, I've been working on a XTB
version with a RS232 interface.  It is based on the new PIC16F1823, and will
emulate the "real-time" CM11A command protocol.  It will not include timers,
macros, or any other "controller" functions.

Jeff

"Dan Lanciani" <ddl@danlan.*com> wrote in message
news:1355627@xxxxxxxxxxxxxxxxxxxxxx
>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