Been playing with a PIC with a view to implementing a datalogger for
automotive applications (see how often I get past that red bit on the
tacho!).  I want the functions to be accessed through soft keys and a menu
system on an LCD display. I realise it's basically a state machine, but
trying to get my head around how to structure this is giving me headaches.
I started coding this but it's getting very complex and I'm sure that the
hideous mass of nested switch statements I have so far isn't the best way to
do things.

Is there a standard way to do this? An example in C would be very nice if
anyone knows of such a thing.

Regards

Mike Rigby-Jones