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???
03/16/07 17:31
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 		 #135133 - I am not surprised...
Responding to: ???'s previous message
... but wasn't that you who have seen a latched-up micro not responding to reset at all? OK, you call for action - the WD should cycle power. What it it won't respond to power cycle, being permanently damaged, what then? Of course there still remains action to be taken - the WD might flash the red light, scream, dial the serviceman, short out the power until the fuses blow etc. - but that's maybe a little far-fetched for a little cute puppy one usually uses together with a '51 (we can talk about a herd of bulldogs or maybe wolves for your case... :-) )

But, I add up your - certainly valid - comments to my paranoia list.

FYI, for WDs, I have already established for myself a paranoia-level indicator, from P0 (no WD or whatever) till P10 (fully redundant system as seen on NASA-funded rockets :-) ). Your claims now qualify to around P8... :-)))

JW


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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