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???
02/14/05 17:13
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#87396 - Swap and Mask
Responding to: ???'s previous message
If I understand what you want to do correctly....

You could read P3, and then mask the low bits (p3.3-p3.0) by ANDing it with 0F0H, then swapping the nibbles, so for example,

You have 10011000 on P3.

AND with 0F0h gives

10010000

Swap nibbles gives

00001001 (9h) which is what you had on p3.7-4

Hope that makes sense.

List of 15 messages in thread
TopicAuthorDate
4 bit binary input            01/01/70 00:00      
   Swap and Mask            01/01/70 00:00      
   as I read your post            01/01/70 00:00      
      FAO Eric the Great.            01/01/70 00:00      
         oops            01/01/70 00:00      
   Updated profile            01/01/70 00:00      
   It is useful!            01/01/70 00:00      
      already shown            01/01/70 00:00      
   Reformatted Code for readability            01/01/70 00:00      
      Neat            01/01/70 00:00      
         re:neat            01/01/70 00:00      
      risque business            01/01/70 00:00      
   Strobe            01/01/70 00:00      
      Strobe valid?            01/01/70 00:00      
   For any pinout            01/01/70 00:00      

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