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???
04/06/06 16:06
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 		 #113741 - detecting end of bounce?
Responding to: ???'s previous message
Kai Said:
The final 0 to 1 toggling at "D1" marks the end of bouncing.

Kai the method you have described is fine.
i can start a timer of 8254 when i sense a logic change at D1.
But when to stop!
How could i know for the last bounce?

Kai Said:
The first 10µsecs, nothing. Because the contact tongues need a certain time to "travel", due to inertia of mass. So, "D1" is "0" during this turn-on delay.

Secondly, i would like to make it clear with port pin logic!

Having the pullup setup described by you, i would do the following.
Activate DRV1
Set all data lines to logic "1" (255h) at the address of switch_close. so compare the data lines with 253h (to detect logic "0" at "D1"). If found equal start timer. So this starts the measurement.
But not sure of detecting the last bounce Kai.
Is it so simple that iam lagging some thought?

Could you assist me with that.

Thanking you,
Suresh.


List of 52 messages in thread
TopicAuthorDate
Measuring Bounce of a Reed Switch            01/01/70 00:00      
   Current progress.            01/01/70 00:00      
      reply            01/01/70 00:00      
         DSO            01/01/70 00:00      
            Of course its a good idea ;-)            01/01/70 00:00      
               also..            01/01/70 00:00      
                  Rather redrawing, i prefer ...            01/01/70 00:00      
   Schematic is incomplete            01/01/70 00:00      
      Simple way            01/01/70 00:00      
   I would do it like that            01/01/70 00:00      
      detecting end of bounce?            01/01/70 00:00      
         Much simpler            01/01/70 00:00      
            this is all getting complicated            01/01/70 00:00      
               there may be definition problem here            01/01/70 00:00      
                  Thanks Richard            01/01/70 00:00      
                  Question and answer            01/01/70 00:00      
                     You're right, of course            01/01/70 00:00      
                        They tell it here            01/01/70 00:00      
                           Yes, it's pretty complete.            01/01/70 00:00      
                              Form A            01/01/70 00:00      
                     More sophisticated? Maybe not.            01/01/70 00:00      
                        OK brass tacks            01/01/70 00:00      
                           that's the basic idea            01/01/70 00:00      
                              60386 processor            01/01/70 00:00      
                                 that wasn't the point, Suresh            01/01/70 00:00      
                                    resolution/max error using ralph            01/01/70 00:00      
                                       not so fast ...            01/01/70 00:00      
                                    reply            01/01/70 00:00      
                                       Really?            01/01/70 00:00      
                                          I doubted when i typed            01/01/70 00:00      
                                             and the manual is right! sorry.            01/01/70 00:00      
                                                Really?            01/01/70 00:00      
                                                   correction            01/01/70 00:00      
                                                      There could be. But I made the mistake            01/01/70 00:00      
            Quantum flux compensator?            01/01/70 00:00      
               is it still April 1            01/01/70 00:00      
                  You are right but,            01/01/70 00:00      
               he means a flux capacitor ...            01/01/70 00:00      
                  And I thought...            01/01/70 00:00      
                  Compensator            01/01/70 00:00      
                     Translation            01/01/70 00:00      
            quantum flux capacitor?            01/01/70 00:00      
               language, culture            01/01/70 00:00      
                  reply : april 1!            01/01/70 00:00      
                     no, it was a natural response            01/01/70 00:00      
                        Ok Erik.            01/01/70 00:00      
                           The "Flux Capacitor" is from a movie            01/01/70 00:00      
                              Yes. to some extent!            01/01/70 00:00      
                     Never wanted to fool you!            01/01/70 00:00      
                        Obviously            01/01/70 00:00      
                           A joke and fooling someone is NOT the sa            01/01/70 00:00      
                              This made me think like that            01/01/70 00:00      

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