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Regarding watchdog timer usage.

 
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jaikumar



Joined: 15 Dec 2006
Posts: 109

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Regarding watchdog timer usage.
PostPosted: Wed Jul 21, 2010 12:02 am     Reply with quote
If in my program the tasks are scheduled by using Timer1, do I still need to use watchdog timer for the purpose of recovering from error when that happens.
If so, please provide some info.

Regards,
Jai
PCM programmer



Joined: 06 Sep 2003
Posts: 21708

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PostPosted: Wed Jul 21, 2010 12:51 pm     Reply with quote
If your main loop calls several tasks like the one shown below, then I
think the best place to put the restart_wdt() statement is in the main loop.
Code:

while(1)
  {
   task1();
   task2();
   task3();

   restart_wdt();
  }

This way, if one of your tasks locks up, it won't return to the main loop
and the Watchdog will reset the system.
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