Request advice on where to look in gnokii source

[David B. Gustavson]

I wish to interface a Nokia 1208 to a microcontroller, so that the  
microcontroller can send and receive SMS messages. This is to be part  
of an alarm system (actually it is monitoring the electrical power to  
someone's refrigerator so that I can take action quickly if the power  
fails!).

I want to talk to the Fbus, I assume; I've ordered a USB serial cable  
and a plain cable, figuring I can experiment using USB with gnokii and  
my Macintosh OS X system until I understand how things work, then go  
directly to TTL serial signals when communicating with the  
microcontroller.

As far as I can tell, the only documentation for how to communicate  
with the 1208 is embedded in the gnokii software.

There seems to be a lot of places to look in the gnokii software!

I wonder if someone could suggest where I should start?

Eventually, I want to run rather simple software in the  
microcontroller, written in C, that sends the right bit sequences to  
send an SMS message and later, I hope, to receive an SMS message that  
I can decode and act on.

I suspect the gnokii code is rather abstract, in order to deal  
symbolically with a wide range of phones, and that it is likely not  
practical to run gnokii on a microcontroller in its entirety, so I  
would extract the particular subset needed for my particular phone,  
and just for SMS sending and receiving. I have not committed to the  
microcontroller yet, but have a few on hand. Leaning toward the SX  
series of PIC-like processors (from Parallax).

I'd be grateful for any advice...

Dave Gustavson