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???
09/14/06 07:12
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 		 #124269 - the logic
Responding to: ???'s previous message
Arvind,

the problem is not in the program (or code, whatever you want), but in the logic of how you "scan" the keyboard.

Please try to describe the "scan" procedure in words or in a flowchart, here in the Forum, why not.

Hint: as it is written now, it loops in SCAN_MATRIX_KEYBOARD forever.

Jan Waclawek


PS. There are types of keyboards for which your scan would work, having DPST switches for each key, but I doubt you use that type.

List of 27 messages in thread
TopicAuthorDate
Matrix Keyboard not working            01/01/70 00:00      
   the logic            01/01/70 00:00      
   Lots of problems            01/01/70 00:00      
      no, it's completely bad in concept            01/01/70 00:00      
      Does the LCD Work?            01/01/70 00:00      
      enphasizing            01/01/70 00:00      
   commented code            01/01/70 00:00      
      Persistance my friend            01/01/70 00:00      
         I'll try it in other way            01/01/70 00:00      
            I'll make the corrections            01/01/70 00:00      
      Note on comments            01/01/70 00:00      
         bad, very bad - yes, but not necessarily because            01/01/70 00:00      
            Subroutine Details            01/01/70 00:00      
               I don't know            01/01/70 00:00      
                I do not know what that information is good for.            01/01/70 00:00      
                  Column scan after ROW confirmation            01/01/70 00:00      
                     Maybe the problem is not here            01/01/70 00:00      
      more Informative code            01/01/70 00:00      
         Comments are better            01/01/70 00:00      
         The Algorithm            01/01/70 00:00      
            This isn\'t necessarily true ...            01/01/70 00:00      
               a correct pain in the gluteus maximus            01/01/70 00:00      
                  Why so much pain?            01/01/70 00:00      
               An exercise for the student            01/01/70 00:00      
               everyone else            01/01/70 00:00      
   Does the LCD Work?            01/01/70 00:00      
      LCD is fine            01/01/70 00:00      

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