multiple source files support

[shizn]

In the Arduino workspace folder, programmers might breakdown their main ino files into different header files and c/cpp/ino files. But currently, the extension is not working well in this situation. Since the build/verify part is based on the Arduino IDE, I assume this part is OK. We need to think about how to better integrate our scenario with the cpp extension.

[yaohaizh]

Not quite sure about what want to achieve for this feature.

Either for C/C++ or Arduino projects, it will always have a main entry file a the starting compilation unit: main/DllMain/setup,setup. etcs yet you can have multiple source files in the workspace.

[shizn]

Let me provide more details later. :) perhaps it's more about a get started doc.

[rei-vilo]

AFAIK, a project has one .ino file and all other files are either .h or .cpp.

The only notable exception is Energia Multi Tasking based on RTOS with as many .ino files as tasks.

[svq98]

In arduino ide, you can have multiple tabs, each tab is an ino file. when you compile it will assemble all those into one large cpp file. I have a simple project with a main file and the the secondary file as a tab.
When I verify, it does not pick up the the second file and fails to compile:

`C:\Users\mn\Documents\Arduino_gw\gateWayV2\gateWayV2.ino: In function 'void loop()':

gateWayV2:192: error: 'cmdProc' was not declared in this scope

     cmdProc(inChar); // int enabled after reading a char`

cmdProc is another ino file

This should be classified as a bug, since I am unable to compile the project. I would be happy for a workaround.

[lollotek]

@svq98 Try this as workaround:

• Rename 'secondary' files from *.ino to *.h (not sure if really necessary)
• Import them using include: #include "secondary.h"

I also needed to change the order of some functions to make theme 'reachable' before someone calls these

[czgtest]

@Sneezry , Can you help to investigate?

[delasource]

@lollotek ok this works. But file has to be named .h

[riccoyudha]

I haven't found a way yet to seamlessly use VS Code to compile my Arduino project with multiple .ino files in a single directory.

However, the best way that I have found out to increase my workflow and to avoid gibberish Arduino IDE UI/UX is actually using VSCode as a text editor and use Arduino IDE to upload.

What you need to do :

1. In Arduino IDE, select File -> Preferences -> Check "Use External Editor"
2. In VS Code, select the folder you are working on and just code as usual
3. If you are ready to upload your code, go back to Arduino IDE and press the upload button

Eventually, Arduino IDE will reload the latest update on the .ino files before it uploads to your board.

Hope this helps.

[IanBellomy]

I can't get an existing project to verify or compile when using @lollotek's work-around.

Many peculiar issues where a function, const, or variable declared in a secondary file can't be found when used in that same file.

Are you just changing back the extensions when you go to build?