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???
09/20/06 12:01
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 		 #124664 - put an inverter on the pin
Responding to: ???'s previous message
I would like to watch an external interupt pin for a positive going edge

put an inverter on the pin - or - if you are not locked on the uC choice, use a derivative with a comparator that has positive and negaitve going interrupts. Also, I believe there is a derivative or two out there that has a bit to set the slope of int0, int1.

Erik

List of 31 messages in thread
TopicAuthorDate
Interupt question......            01/01/70 00:00      
   quick answer..            01/01/70 00:00      
   Noise            01/01/70 00:00      
   Perplexed......            01/01/70 00:00      
   Interrupt            01/01/70 00:00      
      does not matter            01/01/70 00:00      
         Attack            01/01/70 00:00      
            You did ask for it            01/01/70 00:00      
         Interruptifobia            01/01/70 00:00      
            There's not always a performance penalty            01/01/70 00:00      
               there is always an exception            01/01/70 00:00      
                  the controller task            01/01/70 00:00      
   very busy processor......            01/01/70 00:00      
      most likely it is not            01/01/70 00:00      
         PLC ?            01/01/70 00:00      
            since forever            01/01/70 00:00      
   Definatly a PLC....            01/01/70 00:00      
      a link            01/01/70 00:00      
      The application may be a PLC, but the chip is not            01/01/70 00:00      
         I do not think that is what David does            01/01/70 00:00      
   code......            01/01/70 00:00      
   Sorry......            01/01/70 00:00      
      Just post            01/01/70 00:00      
         code post.....            01/01/70 00:00      
            Posting Code and Idea            01/01/70 00:00      
            Where are ....            01/01/70 00:00      
   Ok back on this interupt routine            01/01/70 00:00      
      put an inverter on the pin            01/01/70 00:00      
   ZERO CROSS DETECTOR....            01/01/70 00:00      
      Saif, please and a note            01/01/70 00:00      
         actually...            01/01/70 00:00      

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