Jinx wrote :

> > What input device is used that gives the user the
> > flexibility in input format that you described before ?
> 
> SMS or GSM data

Ah, that explains it. I've seen similar SMS-based
messaging system byt they had quite strickt
rules to how to write the messages to the "device".
In that case it was setting/clearing digital I/O lines,
but the principle was the same. more or less. You
could also query the status of the input lines. Anyway...

Maybe you could respond to an "unknown" message
with a short "usage" message ? With a couple of
formating exemples. Or implement a "help" command,
the user sends "help" in an SMS and gets a short help
text back.

Anyway, now it's much cleaer what environment the
PIC code operates in ! :-)

Finaly, I don't know if having an SMS "interface" still
counts as "stand alone"... :-)

Regards,
Jan-Erik.



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