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???
03/20/09 12:09
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#163687 - Idea
Responding to: ???'s previous message
Luis, as your teacher wants a software solution with level (no triggered interrupt) think in this way:
- at begining interrupt is active
- a low level in input produces interrupt
- the service routine disables the interrupt
- interrupt makes its work...
- executes a RETI
- the main program (or some periodic interrupt: timer) checks
the input and reenable interrupt when pin is high

Daniel

List of 21 messages in thread
TopicAuthorDate
Question of level triggered interrupt            01/01/70 00:00      
   Edge Triggered Interrupt            01/01/70 00:00      
      Only Level triggered            01/01/70 00:00      
   It's not a "problem".            01/01/70 00:00      
      the problem is not technical...            01/01/70 00:00      
      Let me explain again            01/01/70 00:00      
   Idea            01/01/70 00:00      
      What the teacher wants...            01/01/70 00:00      
      Several options...            01/01/70 00:00      
      thats.....            01/01/70 00:00      
         May be you missunderstud            01/01/70 00:00      
   Use a while() trap            01/01/70 00:00      
      Yeah            01/01/70 00:00      
         Use a watchdog timer            01/01/70 00:00      
   How about this?            01/01/70 00:00      
      Wow            01/01/70 00:00      
      which derivative has this feature ?            01/01/70 00:00      
   Our friend the $            01/01/70 00:00      
      Oooops            01/01/70 00:00      
   Answer to my question            01/01/70 00:00      
      Thought about            01/01/70 00:00      

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