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  VS Arduino › › › trouble linking between two projects in a single solution
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Normal Topic trouble linking between two projects in a single solution (Read 3717 times)
arclight
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trouble linking between two projects in a single solution
Dec 22nd, 2012 at 11:41am
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I'm trying to develop some code using projects to link all the assorted bits together, rather than file libraries. I have a project "blink" that contains led.h & led.cpp; these define an led object. Here's the blink.ino, it works:
Code
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#include "led.h"
LEDS::led l(13);
void setup()
{
	l.setDelay(100);
}

void loop()
{
	l.blink();
}


When I create a second project, "blinkTest", that references the blink project, intellisense seems to work OK, I can call the namespace/class info from the led.h/.cpp, but it won't compile. Here's the code from blinkTest.ino:
Code
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#include <led.h>

LEDS::led ll(13);

void setup()
{
	ll.setDelay(500);

}

void loop()
{

  ll.blink();

}


...and here is the error message:
Quote:
SketchLibFolders
vr\lib\gcc\avr\4.3.2\include\;
Summary: Header=1 Prototypes=3 Imports=1
+ -c -g -Os -Wall -fno-exceptions -ffunction-sections -fdata-sections -mmcu=atmega328p -DF_CPU=16000000L -MMD -DUSB_VID=null -DUSB_PID=null -DARDUINO=101 -DVISUALMICRO_COMPILER_VER=1 uino" standard" " -o .o"
blinkTest.ino : No such file or directory
blinkTest.ino : 'LEDS' has not been declared
blinkTest.ino : expected constructor, destructor, or type conversion before 'll'
blinkTest.ino : : In function 'void setup()':
blinkTest.ino : 'll' was not declared in this scope
blinkTest.ino : : In function 'void loop()':
blinkTest.ino : 'll' was not declared in this scope
Error compiling
  
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Tim@Visual Micro
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Re: trouble linking between two projects in a single solution
Reply #1 - Dec 22nd, 2012 at 8:49pm
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Hi,

The vs plugin/compiler works to the Arduino rules which means that you will always have the same compile in VS as we do in the Arduino IDE.

Arduino rules do not support separate projects. VS is more forgiving which is why the intellisense works.

There are a few ways you can work with this. Creating a library is the best solution. After you create the lib and add it to your sketch then you can click "project>show all arduino files". This will "bring" the library sources into the current sketch project allowing you to easily edit the lib source. 

Keep in mind that an arduino lib folder name must match the name of a .h in the lib folder. If you add more .h files after you have included the library in your sketch then click "project>add library>refresh" then ensure the new .h is added as an #include in the sketch. Arduino does not support fully qualified #includes which is why you need to use the lib system. 

Remember that you can create a "Libraries" folder below the "my documents/arduino sketch folder" which keeps your libraries away from the ones installed with the arduino ide.
« Last Edit: Dec 22nd, 2012 at 8:51pm by Tim@Visual Micro »  
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arclight
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Re: trouble linking between two projects in a single solution
Reply #2 - Dec 23rd, 2012 at 12:27am
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I got the library approach working; thanks so much!
  
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Tim@Visual Micro
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Re: trouble linking between two projects in a single solution
Reply #3 - Sep 9th, 2015 at 10:03pm
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The latest release of Visual Micro allows the Arduino rules to be broken. Code can be in sub folders, the files linked into the solution will be compiled. There is a new "Compatibility" section in Tools>Options which enables the various new features to be disabled if Strict Arduino compatibility is required.

Arduino library sources can also be copied to a designated folder structure below each project. The library sources are compiled and #included in the exact same way as normal Arduino libraries. This means that libraries can be developed and then published/copied to the master Arduino library list and shared within other projects. A new "Add>New Arduino Library" menu item provides a quick way to create a new library but they can also be created manually.

It appears to also now be possible to share code between multiple projects but this has not been well tested.
  
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