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???
10/23/09 04:57
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 		 #169986 - Try this
Responding to: ???'s previous message
As i told you earlier but didnt got reply form you that check the signal at the interput pin from the oscilloscope that whether there is any signal coming to it or not.
If there is than, check your electronic circuit and i think that the problem will be in it.
Secondly if you cant determine any signal at the interupt pin than make a simple program for e.g. when interput comes make p1.1 low and check it.
Here you can determine that the problem is in the hardware or in the software.

List of 25 messages in thread
TopicAuthorDate
External interrupt problem.            01/01/70 00:00      
   Clarify            01/01/70 00:00      
      Noise? Analog processing?            01/01/70 00:00      
      Inductive proximity switch            01/01/70 00:00      
         Looked at the signal?            01/01/70 00:00      
            air humidity and external interrupt pin            01/01/70 00:00      
               No, the interrupt line isn't affected by air humidity            01/01/70 00:00      
                  air humidity can affect - also temperature, etc            01/01/70 00:00      
   May be the proximity switch not working properly            01/01/70 00:00      
      Indication is not proof            01/01/70 00:00      
      using new proximity switch            01/01/70 00:00      
         Are you using it correctly?            01/01/70 00:00      
            i am using proximity switch correctly            01/01/70 00:00      
      Not necessarily true            01/01/70 00:00      
   The first obvious sign of failure            01/01/70 00:00      
      Try this            01/01/70 00:00      
         by my best guess ....            01/01/70 00:00      
   Some ideas            01/01/70 00:00      
      Inductive Proximity Sensors            01/01/70 00:00      
   Who mentioned "inductive"?            01/01/70 00:00      
      Fourth one down            01/01/70 00:00      
         Oh yes!            01/01/70 00:00      
   Can you post the schematic ?            01/01/70 00:00      
   Problem solved            01/01/70 00:00      
      Thus proving the point...            01/01/70 00:00      

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