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int to decade out

 
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int to decade out
PostPosted: Tue Mar 27, 2007 6:53 am     Reply with quote
This isn't really a PIC issue, but a C programming question. How can I break an int into 12 decade bits? It's not so easy as a normal binary conversion. Also, the less time it takes to convert the number, the better.

Example, if I had an int with value 234, I would want to break this into 0010 0011 0100 and output each bit on a seperate pin. These will be used for 3 seven-segment displays.
kevcon



Joined: 21 Feb 2007
Posts: 142
Location: Michigan, USA

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PostPosted: Tue Mar 27, 2007 7:16 am     Reply with quote
This is just one way to do it.


Code:

   unsigned int8 i = 234;
   unsigned int8 huns, tens, ones;


   huns = i / 100;
   tens = ( i - ( huns * 100 ) ) / 10;
   ones = i - ( ( huns * 100 ) + ( tens * 10 ) );
Ttelmah
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PostPosted: Tue Mar 27, 2007 8:17 am     Reply with quote
A search for 'BCD' (binary coded decimal - what this format is called), will find several conversion routines, including some very efficient ones.

Best Wishes
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