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PIC Program Intercompatibility

 
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chrisitanjones



Joined: 30 Apr 2010
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PIC Program Intercompatibility
PostPosted: Fri Apr 30, 2010 8:48 am     Reply with quote
I've got some C source code here which was designed to run on the 16F648. Because i've only got the 16F887 handy, would this program run on that too? I've changed the header file and it seems to have compiled ok? Is there any way of checking intercompatibility between mcu's?

(Sorry, i'm new to this)

Many Thanks in Advance
Douglas Kennedy



Joined: 07 Sep 2003
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PostPosted: Fri Apr 30, 2010 11:56 am     Reply with quote
Intercompatibility
PIC's are pretty good in this regard. Now small featured MCU's can't be given big features with code. Typically if it compiles you are probably good to go.
newguy



Joined: 24 Jun 2004
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PostPosted: Fri Apr 30, 2010 12:22 pm     Reply with quote
If the code is "normal" - ordinary C code - you're fine. If the original code refers to registers within the processor, you might not be fine.

Look for things like:

Code:
#byte SOME_REGISTER = 0xc7


or

Code:
#org


If you see things like that, you'll have to make sure that the code refers to the same (or equivalent) register or memory location/range in the new processor as with the old.
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