Corne Smith said:
> I've got a basic question that I still don't understand.
>
> What is the wachdog timer used for ?
> I know it is used to reset the PIC,but why ?
In case your code goes in the weeds, then the watchdog timer pulls it back
in.
This could be due to noise or perhaps even a bug in your program.  It is a
"safety" precaution.
The theory is that if the watchdog doesn't get reset, then the processor
isn't executing the right code.

Hope this helps,

Alan G. Smith
+---------------------------------------------------------
| Alan G. Smith
| ags@poboxes.com
| http://www.innovatus.com/ags