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???
03/03/05 14:14
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#88972 - It's depending on chip
Responding to: ???'s previous message
As Andy and Neil said on "classic" 8051 (or 8052) if you write the 1 to bit in register that match pin on microcontroller, it is setted as an input pin. But not all microcontrollers working same. For example Analog Devices ADuC832. In this case if you want to read from port P1, you have to set bit to 0, however, in the datasheet this is mentioned. The output works normal as Neil wrote.

List of 17 messages in thread
TopicAuthorDate
on 8051 settings pins as input or output            01/01/70 00:00      
   re: setting pins as input or output            01/01/70 00:00      
   thanks            01/01/70 00:00      
      Do you not            01/01/70 00:00      
   It's depending on chip            01/01/70 00:00      
      depending on chip            01/01/70 00:00      
         No reason for negative Karma point            01/01/70 00:00      
            fine            01/01/70 00:00      
            not first post, not first time asked            01/01/70 00:00      
      Picky, picky, but no such thing!            01/01/70 00:00      
         oh, I did just that            01/01/70 00:00      
            Don't try this at home...            01/01/70 00:00      
               Maybe it still works...            01/01/70 00:00      
                  Eh???            01/01/70 00:00      
                     It's a joke, don't take it too literaly            01/01/70 00:00      
                        Sorry            01/01/70 00:00      
                           My english is still so poor...            01/01/70 00:00      

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