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Per Westermark
03/22/12 15:41
Read: 544 times
Sweden


 
#186824 - Did you think about accesses using DATA1?
Responding to: ???'s previous message
Sean O Mara said:
Its not as simple as just changing the equates. Am i missing something obvious?

You are probably missing that DATA1 is another EQU accessing P1 port pins. So code that uses DATA1 will not be compatible if you do change DB4, DB5, DB6, DB7.

Another issue is how confusing it would be with DB4 being bit zero and DB7 being bit three.

List of 13 messages in thread
TopicAuthorDate
4 Bit LCD      Sean O Mara      03/22/12 12:10      
   I am no sherlock Holmes, but ...      Erik Malund      03/22/12 13:31      
      LCD      Sean O Mara      03/22/12 13:56      
         Did you think about accesses using DATA1?      Per Westermark      03/22/12 15:41      
            lcd      Sean O Mara      03/22/12 17:18      
               So you found a solution ...      Andy Neil      03/22/12 18:02      
                  LCD 4 BIT      Sean O Mara      03/23/12 06:49      
                     where did you get that idea?      Erik Malund      03/23/12 06:57      
                        Using Read Cycle to LCD      Michael Karas      03/23/12 10:33      
                           of course, you can not use a signal that is not there      Erik Malund      03/23/12 10:45      
                        busy flad check      Sean O Mara      03/23/12 16:02      
                           Why not solve your problem BEFORE trying to save pins?        Richard Erlacher      03/24/12 08:16      
                              Premature optimisation      Andy Neil      03/24/12 09:48      

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