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03/16/07 15:55
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 		 #135122 - one more reason to KISS
Responding to: ???'s previous message
It seems to me that it is also possible that you could end up having program control dragged away from main for an unanticipated duration leading to an unintended triggering of the WDT. Suppose, for example, you get three or four interrupts at the same time. The ยต-controller will prioritize them according to either programming or default design, but it could still be quite a bit longer than anticipated before getting back to the main function.

one more reason to KISS, which, in this case means "Keep ISRs Short and SImple"

Erik


List of 23 messages in thread
TopicAuthorDate
Where to kick the watchdog            01/01/70 00:00      
   Not being the consummate embedded guy, ...            01/01/70 00:00      
   Be kind to animals            01/01/70 00:00      
      I thought that as well, stray main loop =badness            01/01/70 00:00      
      Sort of            01/01/70 00:00      
   There are watchdogs and the there are WATCHDOGS            01/01/70 00:00      
   I doubt the usefulness of normal watchdog            01/01/70 00:00      
      watchdog IS expensive...            01/01/70 00:00      
         i suppose arguments for and against having a dog            01/01/70 00:00      
            bugs happen...            01/01/70 00:00      
               Not having quite the same budget as NASA            01/01/70 00:00      
                  the case for the internal dog            01/01/70 00:00      
   It's obvious I need to learn about WDT            01/01/70 00:00      
      the WD would not care, but if you reset it in e.g.            01/01/70 00:00      
      if your main function goes of to play in the weeds            01/01/70 00:00      
      I wouldn't have thought about that.            01/01/70 00:00      
         one more reason to KISS            01/01/70 00:00      
      there is nothing like "frozen" microcontroller...            01/01/70 00:00      
         You would be surprised...            01/01/70 00:00      
            Apply ESD to your micro and look what happens...            01/01/70 00:00      
            I am not surprised...            01/01/70 00:00      
               be reasonable            01/01/70 00:00      
                  therac            01/01/70 00:00      

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