Software watchdog reset

Hi, I have this problem my software when observed does a restart because of watch dog reset. Because of this software reset one of the ports behaves abnormally since the reset status of this pin is High and I make it Low once in main routine. Now my question is i do not know the reason of watch dog reset. Is it a good thing or bad thing of watch dog reset. There can be several reasons of watch dog reset, do i need to investigate each and every case of reset or I can leave it?

Do you reset the watch dog often enough? If not then it is doing what it is designed to do.

Mike.

yes correct but by resetting the software are we missing some important bugs?

Pommie said:

Do you reset the watch dog often enough? If not then it is doing what it is designed to do.

Mike.

Click to expand...

Last place I worked, the SW guys called it kick the dog

I have lots of code with kick the dog in , I guess its a bit of a in joke with programmers.

elecLear78 said:

yes correct but by resetting the software are we missing some important bugs?

Click to expand...

The watch dog timer only resets the processor if it takes too long doing a task - I.E. it's crashed or doing an infinite loop. If you don't reset (Kick) the dog then it will reset the processor.

Mike.

Thankyou very much for the replies. Now I understand.