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James Brown
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Key Word
Dec 2nd, 2012 at 5:44pm
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I ran into problems when I attempted to use 'analog' as a constant defination in a sketch.
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#define analog 1

This compiled fine under VS but failed with:
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ERGO2:12: error: expected ',' or '...' before numeric constant

when compiled under Arduino 1.0.2.
Changing the name of the constant to anything else:
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#define analogg 1

and it works fine under both systems.

Are there other keywords that need to be avoided?
  
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Tim@Visual Micro
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Re: Key Word
Reply #1 - Dec 2nd, 2012 at 5:59pm
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I don't have time to test this so maybe you could repeat the test just to be sure.

The error in the arduino ide might have been some other confusion in your code although what you describe seems very clear  Undecided 

Both vs and arduino use the same compiler so it's difficult for me to see how they could produce different results.

+ The question is what keywords does Arduino reserve? If they do there will be a list somewhere and I have never seen this in their code.
  
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James Brown
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Re: Key Word
Reply #2 - Dec 2nd, 2012 at 6:28pm
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I did retry it several times and attempted to simplify my code to the point that it could be zipped and sent to you.  That turned out to be more work than I wanted to do.
I am *very* sure that the only way it fails is when the #define is 'analog'.  All other spellings work fine on both systems.   
I'll attempt to simplify it once more...
  
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Tim@Visual Micro
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Re: Key Word
Reply #3 - Dec 2nd, 2012 at 6:45pm
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Thanks for that. I'll give it a go and see why that is.
  
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Evan
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Re: Key Word
Reply #4 - Dec 5th, 2012 at 1:42am
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Works fine for me with both VS2010+VM and Arduino 1.0.2.  Code follows:

#define analog 42

void setup() {      
    int myVar = analog ;
}

void loop() { }


The diagnostic ERGO2:12 is similar to some I've seen and usually reflects a problem elsewhere in the module.
  
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Tim@Visual Micro
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Re: Key Word
Reply #5 - Dec 5th, 2012 at 1:45pm
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Thanks for testing. I thought that would be the case.
  
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