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  VS Arduino › Visual Micro › Visual Studio 2017, 2019, 2022 › enum data type giving red line
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Hot Topic (More than 8 Replies) enum data type giving red line (Read 5294 times)
groz
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enum data type giving red line
Apr 17th, 2018 at 6:50pm
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Why is there a red line and warning message (see attachment) when assigning an ENUM value to a variable of that type? Note: code compiles and functions correctly.

Board: Industruino D21G
Core: arduino15\packages\industruino\hardware\samd\1.0.1\cores\industruino
  
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Tim@Visual Micro
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Re: enum data type giving red line
Reply #1 - Apr 17th, 2018 at 7:12pm
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It's best to paste the text of code instead of images then we can replicate more easily.

Code
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typedef enum State {
	One,
	Two,
	Three
};

State state;

void setup()
{
	state = One;
}

« Last Edit: Apr 17th, 2018 at 7:19pm by Tim@Visual Micro »  
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groz
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Re: enum data type giving red line
Reply #2 - Apr 17th, 2018 at 7:19pm
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Will do in the future. 

If I put state.Off the redline moves to state and says: Enum State, type name is not allowed.
  
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Tim@Visual Micro
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Re: enum data type giving red line
Reply #3 - Apr 17th, 2018 at 7:20pm
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Yes ignore my first answer I changed it.

Init state inside your setup
  
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groz
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Re: enum data type giving red line
Reply #4 - Apr 17th, 2018 at 7:24pm
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I've already have other instances in code of assigning the enum value to the variable but it comes back with same error. Like I said, the code does compile and function ? The difference is the red line moves under the = sign.

CONTROL_BOX_FAN_STATUS = Off;
  
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Tim@Visual Micro
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Re: enum data type giving red line
Reply #5 - Apr 17th, 2018 at 7:55pm
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Not sure. This is possibly to do with a difference between VC++ intellisense and GCC
  
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groz
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Re: enum data type giving red line
Reply #6 - Apr 17th, 2018 at 8:03pm
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That might be it. I created the following simple C++ console routine and no red lines.

// ConsoleApplication1.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"

enum state
{
     off,
     on,
};
state CONTROL_BOX_FAN_STATUS = off;

int main()
{
     CONTROL_BOX_FAN_STATUS = off;
     CONTROL_BOX_FAN_STATUS = on;
    return 0;
}
  
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Tim@Visual Micro
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Re: enum data type giving red line
Reply #7 - Apr 18th, 2018 at 9:37pm
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I can't get VS to show this as an intellisense error any more.

It might be that I upgraded from Visual Studio 15.5 to 15.6
  
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groz
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Re: enum data type giving red line
Reply #8 - Apr 19th, 2018 at 3:48pm
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Strange, I'm using 15.6.6. I did find that by changing the Board Type From Industruino D21G to 
Arduino/Genuino Uno the red line under the = sign goes away.

Is it possible for you to install this board and see if you can replicate the problem on your end.
Enter the Board Manager (Tools->Boards Manager), search for 'industruino' and install the 'Industruino SAMD Boards' package. Version 1.0.1
https://static.industruino.com/downloads/code/IndustruinoCores/IndustruinoSAMD/p...

Thanks

Here is a dump of my about info:

Microsoft Visual Studio Community 2017 
Version 15.6.6
VisualStudio.15.Release/15.6.6+27428.2037
Microsoft .NET Framework
Version 4.7.02556

Installed Version: Community

Visual C++ 2017   00369-60000-00001-AA121
Microsoft Visual C++ 2017

Arduino for Visual Studio   1.0
Arduino extension for Visual Studio. For more information please see docs, faq and forum at http://www.visualmicro.com
« Last Edit: Apr 19th, 2018 at 3:49pm by groz »  
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Tim@Visual Micro
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Re: enum data type giving red line
Reply #9 - Apr 19th, 2018 at 4:29pm
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I have the board installed. I think we are at the whim of intellisense.

If you can find the definition that it is happy with I can probably add it to the intellisense-fixes of the next release.

edit: you are right I had been testing toolchains and had indutrial 101 selected instead ofthe D21. So yes there is an error now.
« Last Edit: Apr 19th, 2018 at 4:35pm by Tim@Visual Micro »  
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Tim@Visual Micro
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Re: enum data type giving red line
Reply #10 - Apr 19th, 2018 at 4:41pm
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I think I have found the issue. The intellisense fix for D21 removes a lot of system file "errors" but causes your example to fail.

I will look into it.
  
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groz
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Re: enum data type giving red line
Reply #11 - Apr 19th, 2018 at 6:03pm
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I did some more testing and added enum names to old style enum types AND tried creating an enum class as well. BOTH types now resolve properly and NO red lines.
Code (C++)
Select All
enum state
{
	On,
	Off
};

state Switch_State = state::Off;

enum class MyEnumClass
{
	one,
	two,
	three
};
MyEnumClass test_enumClass = MyEnumClass::three;

void setup()
{
  /* add setup code here */
}

void loop()
{
	Switch_State = state::On;
	test_enumClass = MyEnumClass::two;
  /* add main program code here */
}
  
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