Using WDT as a Temp Sensor?

[Archilochus]

The confusion I am having is how to setup the WDT correctly. How do I setup the WDT up so that it rolls over without reseting the pic, and how do I tell that the WDT rollover has occured. Since it may matter I am using a 12F675 for this project. I assume I set the pic fuse to not use the WDT to reset the pic, but I am not sure how to use it in my code.

I think I am missing one minor piece and I will be able to get this to work.

Thanks for any help

I'm not experienced in assembly, but it looks like the idea in the app note is that you WANT the WDT to cause a PIC reset. Once the PIC is reset by a WDT timeout, you then check to see if the WDT timeout caused the PIC to reset, or if some other condition caused a reset. There are several flags that will tell you whether a PIC has just powered up, or has reset due to various other conditions - one of them being a WDT timeout. See "STATUS" and "PCON" registers in the device data sheet.

You'll need to set the WDT ON in the config fuse.

Arch