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???
02/09/07 17:42
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 		 #132387 - 8051 with PS/2 keyboard
Hello there,

Yes, I know it has been discussed quite much times in this forum, and I read all things related to it, and yet I did not understant.

I connected VCC and GND to the keyboard, and DATA and CLOCK to P1.2 and P1.3

I did not quite understand how to communicate with it. How do I read the keystrokes, or even how do I send a command to turn the num-lock LED on?

Thanks, and sorry for not understading by reading past threads.

List of 44 messages in thread
TopicAuthorDate
8051 with PS/2 keyboard            01/01/70 00:00      
   keyboard protocol            01/01/70 00:00      
      Hey Dennis            01/01/70 00:00      
         bit banging examples            01/01/70 00:00      
         ???            01/01/70 00:00      
            Ok then,            01/01/70 00:00      
               crawl, walk, run            01/01/70 00:00      
                  Actually            01/01/70 00:00      
            I read it all again,            01/01/70 00:00      
               why bother?            01/01/70 00:00      
                  or ...            01/01/70 00:00      
                  I have tried using            01/01/70 00:00      
                     Not instructions            01/01/70 00:00      
                        So, if he did not state which assembler he uses            01/01/70 00:00      
                           yes            01/01/70 00:00      
                              I read the assembler manual;            01/01/70 00:00      
                                 Number format?            01/01/70 00:00      
                                    read through the assembler manual            01/01/70 00:00      
                                       Done, as well as reading your links            01/01/70 00:00      
                                          Is P1 defined?            01/01/70 00:00      
                                             That was indeed the problem            01/01/70 00:00      
                                                * $            01/01/70 00:00      
                                                   Thanks a lot            01/01/70 00:00      
                                                      That's always the way!            01/01/70 00:00      
                                                         Actually that's a code            01/01/70 00:00      
                                                            do you have a "main"?            01/01/70 00:00      
                                                               My hardware is AT89S52            01/01/70 00:00      
                                                                  that may never happen            01/01/70 00:00      
                                                                     Check this out:            01/01/70 00:00      
                                                                        OK, so you did check it            01/01/70 00:00      
                                                            You assume too much!            01/01/70 00:00      
               do not translate            01/01/70 00:00      
                  which assembler?            01/01/70 00:00      
   turnkey solutions, free, but not 805x            01/01/70 00:00      
      The whole exercise - As I See It - IMHO.            01/01/70 00:00      
         If he's willing to do the work ...            01/01/70 00:00      
   www.computer-engineering.org/ps2protocol/            01/01/70 00:00      
      Hello Stefan,            01/01/70 00:00      
         See also            01/01/70 00:00      
         ps2 keyboard prototcol            01/01/70 00:00      
   More reference material            01/01/70 00:00      
      Eh?            01/01/70 00:00      
         ps2 protocol            01/01/70 00:00      
            Already done            01/01/70 00:00      

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