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preprocessor instruction ifdef with fuses

 
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joviwap



Joined: 23 Jan 2007
Posts: 2
Location: Bournemouth

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preprocessor instruction ifdef with fuses
PostPosted: Tue Jan 23, 2007 7:48 am     Reply with quote

Hello everybody!

I would like to know if that code will execute the code

#fuses NODEBUG

#IFDEF NODEBUG

code

#ENDIF

Is that the correct way to execute some code depending if I am in debug mode?

Thanks a lot!
Ttelmah
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PostPosted: Tue Jan 23, 2007 9:23 am     Reply with quote

At heart, no...
Fuses, are completely separate, from 'defines', which #ifdef, and #ifndef access. 'Defines', set values, which are accessed during the preprocessor phase (which CCS does not explicitly have as a distinct compiler phase), but still handles like other compilers in general. 'fuses', set specific bits in the processor configuration words.
However, CCS, has an extra instruction, to 'join' these two functions. There is a command:

FUSE_SET:fffff (where 'fffff' is a fuse name), which returns a '1', that can be tested in the preprocessor commands, to do what you want.
So:

#IF getenv("FUSE_SET:DEBUG")!=1


#ENDIF

Will perform the lines between the #if, and the #endif, if the debug mode fuse is not set.

Best Wishes
joviwap



Joined: 23 Jan 2007
Posts: 2
Location: Bournemouth

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PostPosted: Tue Jan 23, 2007 5:50 pm     Reply with quote

Thank you very much. I knew that was not right but is the best y could found for my selve.

Anyway, I going to use this new instruction!

Thanx again!
Ttelmah
Guest







PostPosted: Wed Jan 24, 2007 3:05 am     Reply with quote

If you look in the file 'readme.txt', in your compiler's home directory, it has details of some of the other 'extra bits' like this. Smile

Best Wishes
Mark



Joined: 07 Sep 2003
Posts: 2838
Location: Atlanta, GA

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PostPosted: Wed Jan 24, 2007 7:02 am     Reply with quote

Another approach:

Code:

#define NO_DEBUG

#ifdef NO_DEBUG
  #fuses NODEBUG
#else
  #fuses DEBUG
#endif
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