Adding WDT to a 12CE674

[aphpic]

Hi from your newest member

I have dabbled for a while with a PIC project and would like to add a WDT to try and make it bullet proof but as with all these things I have a problem.

I am using a 12CE674 and reading a 15kHz frequency on GP3 and ADC from a current sensor on GP0. Because of long delays I have set the prescaler on timer 0 to 1:64 but swap it to 1:1 each time I read the frequency then back to 1:64 again. So how would the WDT fit into this situation? I am probable not understanding the data sheet correctly because it says clrwdt resets the prescaler. Does this mean I have to keep setting the WDT prescaler each time and does it effect timer 0? A bit of code would go a long way!

Thanks in anticipation

Andrew

[drh]

The prescaler is assigned to either timer0 or WDT, not both. If you enable the WDT, your code needs to call RESTART_WDT() before the WDT times out. This should be about 18ms.
_________________
David