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???
01/27/10 13:50
Modified:
  01/27/10 14:23

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Msg Score: +1
 +1 Good Answer/Helpful
#172755 - Counter
Responding to: ???'s previous message
Although an interrupt would also be my first suggestion, depending on your 8051 variant and how fixed your layout is, you could also use the signal to clock an internal counter. That way, if you cannot service the interrupt fast enough, you could still tell how many times the signal has occurred between reads.

-Aubrey

P.S. In either approach, beware of signal bounce.

List of 10 messages in thread
TopicAuthorDate
Sensor Problems            01/01/70 00:00      
   milliseconds?            01/01/70 00:00      
      I wonder too ...            01/01/70 00:00      
         use of interrupts            01/01/70 00:00      
            Remember state            01/01/70 00:00      
      To (almost) quote Star Trek:            01/01/70 00:00      
         Counter            01/01/70 00:00      
   re-think code            01/01/70 00:00      
   Weeelll if you have to            01/01/70 00:00      
      misnamed device            01/01/70 00:00      

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