Thank you for the quick reply Sebastian!


> |I just
> |want code execution to continue from the instruction after the sleep
> |command. The book seems somewhat confusing, but if I disable Global
> |Interrupts <INTCON:7> and enable the EEPROM Write Operation Interrupt
> |<PIE2:4> will this accomplish what I describe? Will I need to enable
> |Peripheral Interrupts <INTCON:6>?
>
> Disable GIE (global interrupt), enable EEIE (e2prom interrupt), and enable
> PEIE (peripheral interrupt). This way, with GIE disabled, the PIC wake up
> executing the next instruction after the SLEEP instruction.

Great! This is what I suspected, but the only reference I found in the book
kept mentioning when the interrupt flag bit was set. I knew the bit wouldn't
be set because the EEPROM wouldn't be finished writing.


>
> |I am not using interrupts anywhere else in my program so I'd like to
> |stay away from them if possible.
>
> Why?

Well, I made that choice for a couple of reasons. First, I am still relatively
new to PIC programming and this will be a rather large project for me. I am
implementing many new things that I have never used before. Second, should
this project be successful, I will hopefully expand on it in the future, and
at that point I may need to use interrupts. If I can keep everything going
without interrupts right now, I feel it will be slightly cleaner should I ever
need to write an interrupt handler. But above all, I don't need them...why use
them when all I need is to wake up the microcontroller?

>
> |If there is no way to wake the
> |microcontroller without having it vector to 0x04, can I just have RETFIE
> |as the only instruction in my interrupt routine and have it accomplish
> |what I need?
>
> I've never done that, but I think it should work (two instructions: first
> clear the EEIF bit by software, then RETFIE).

I was pretty sure this method would work too, but it seems such a waste of
code. All I need is for the controller to wake up...I know where the interrupt
will be from, and I know that all I will want to do is continue code
execution. I suppose i wanted a more elegant solution than the "Clear the
interrupt bit, then RETFIE" solution. :)

Thank you again!

Josh Koffman
joshy@mb.sympatico.ca