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  VS Arduino › › › [SOLVED] VS2013 - Intellisense false errors
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Lexu
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[SOLVED] VS2013 - Intellisense false errors
Feb 19th, 2014 at 1:21am
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Hi there,

I've been starting to use VM for my bachelor degree project, everything is working as intended but, intellisense is a bit of a fail on me, with over 100 errors in _CORE related headers and some weird other errors in my code.

I'm using VS2013, VM 1401.26, Code compiles and uploads just fine.

Example of intellisense fails:

Code
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const int pin_input = A0;
// error: expression must have a constant value


Code
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extern "C"{ }
// error: expected an identifier


And some other errors related to the struct i used inside the extern "C".

I mention again that the code compiles and uploads just fine, but the intellisense errors are a little annoying.

Thanks in advance for any help! Smiley

EDIT:
The fix for my problem can be found here:

Code
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Project -> References -> Configuration properties -> C/C++ -> Advanced -> Compile as -> Compile as C++ code (/TP);
« Last Edit: Feb 19th, 2014 at 10:12pm by Lexu »  
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Tim@Visual Micro
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Re: VS2013 - Intellisense false errors
Reply #1 - Feb 19th, 2014 at 1:51am
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Hi,

Thanks for the overview.

The compile is managed by Visual Micro and ensures the same result as the Arduino Ide.

The intellisense is managed by each Ide, Visual Micro simply feeds it some includes, paths and pre-processor defs.

Visual Studio C++ is not entirely compatible with Arduino and often we suggest closing the errors list and using the compiler dbl click drill down into error or the red squiggles to see errors. That said normally we would expect less than 20 false errors but it does depend on the code and it hasn't been tested with c code very much. You are welcome to email your sketch to info [at] visualmicro.com. There are some things we can do to tweak the intellisense so having your sketch might prompt some questions/discussion.

Another alternative that might be better is Atmel Studio which is free and is VS 2010. It's intellisense engine expects gcc so might work better for you.
  
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Lexu
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Re: VS2013 - Intellisense false errors
Reply #2 - Feb 19th, 2014 at 11:39am
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Hi there,

I've tried Atmel studio before trying VS2013, i just like having less IDE's in my PC and i have recieved VS2013 free from my University.

Well, i guess i'll get used to it, i disabled intellisense errors and switched to output tab, now i see only the compiler related errors when happening.

It's just that i like to write C code, so i needed extern "C" in my header, and lot's of errors, including extern "C" appeared.

Thanks for the fast feedback!
  
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Tim@Visual Micro
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Re: VS2013 - Intellisense false errors
Reply #3 - Feb 19th, 2014 at 1:42pm
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If you find time to edit the vsarduino.h in the visual micro folder maybe you can cause less errors to appear. 

NB: The .h file is re-written when you compile, switch board and perform various other tasks so your changes will quickly be lost

If you find any combination in the cpp project settings or vsarduino.h that improves the situation please do let me know so we can extend Visual Micro

Thanks very much

vsarduino.h and proj settings are not used in the compile. We can hack them purely to improve intellisense
« Last Edit: Feb 19th, 2014 at 1:43pm by Tim@Visual Micro »  
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Lexu
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Re: VS2013 - Intellisense false errors
Reply #4 - Feb 19th, 2014 at 9:29pm
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Hi there,

I managed to resolve my mentioned problems regarding intellisense errors and extern "C" thingy.

My fix:
Project -> References -> Configuration properties -> C/C++ -> Advanced -> Compile as -> Compile as C++ code (/TP);

Hope this helps! Smiley
  
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Tim@Visual Micro
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Re: [SOLVED] VS2013 - Intellisense false errors
Reply #5 - Feb 19th, 2014 at 10:21pm
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Yes that's fantastic thanks. Do you think it makes sense for Visual Micro to always switch the property on for Arduino projects?
  
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Lexu
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Re: [SOLVED] VS2013 - Intellisense false errors
Reply #6 - Feb 19th, 2014 at 10:33pm
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Yes, i think it makes perfect sense to switch it on by default.

Judging by the fact that Arduino projects are both C and C++ and compilation is handled by the Arduino libs, i see no downside in doing this. For now, all my intellisense problems are gone.

I still got some intellisense errors from _core folder, but at least my code is fine.

If i get on some problems that could be related to this setting, i will probably report it here.
  
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Re: [SOLVED] VS2013 - Intellisense false errors
Reply #7 - Feb 19th, 2014 at 10:52pm
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Thanks that will be appreciated, good luck with your work
  
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