VS Arduino - extern cpp source file could not include internal header file

Jun 8^th, 2025 at 10:39pm (UTC)

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VS Arduino › › › extern cpp source file could not include internal header file

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extern cpp source file could not include internal header file (Read 1293 times)

Cong Quyen Knight Junior Member Offline Posts: 22 Joined: Nov 29^th, 2021	extern cpp source file could not include internal header file Dec 4^th, 2021 at 6:50am	Print Post
	Hi, I have a project as below --src + --- sketch1 + --- entry.ino + --- process_control.cpp + --- logger.h * --- logger_helper.h (link to lib_logger via filter of vs2019) * --- logger_helper.cpp (link to lib_logger via filter of vs2019) + --- sketch2 + --- entry.ino + --- process_control.cpp + --- logger.h * --- logger_helper.h (link to lib_logger via filter of vs2019) * --- logger_helper.cpp (link to lib_logger via filter of vs2019) + --- lib_logger + --- logger_helper.h + --- logger_helper.cpp * meaning add external file from outside sketch folder. in process control.cpp, I could include logger_helper.h to use function here. but in logger_helper.cpp, I could not include logger.h. It's useful if I could add/remove some definition to enable/disable logger for only sketch1 or sketch2. Not need to disable from logger_helper.h (will affect both sketchs)


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Tim@Visual Micro Administrator Offline Posts: 12191 Location: United Kingdom Joined: Apr 10^th, 2010	Re: extern cpp source file could not include internal header file Reply #1 - Dec 4^th, 2021 at 3:15pm	Print Post
	It's not exactly clear but you might need to understand some build arduino rules and then, optionally, know how to extend that with vMicro ... Arduino expects source code in a folder with same name as the project. Therefore an arduino project/sketch would be:- sketch1 sketch1.ino sketch1_another.ino cpp/h files as you have sketch2 sketch2.ino sketch2_another.ino cpp/h files as you have If you want to add code to a sub folder below a sketch you must use a folder called "src". All folder can sketch1 sketch1.ino src/mycode1.cpp src/another_folder/mycode2.cpp .ino files always go in the root of the project You can include external files a couple of ways:- 1) Add individual files as a shortcut. This is a crude system, the linked shortcuts will be copied to the temp version of the project folder at build time. They will always be considered as in the project folder. (right click the project > add > existing item > select a file and note the "Add" option at the bottom of the window, select "Add as link") 2) Use a shared project (file>add>new>shared c++ project). When you use a shared project you will see that you can also add a "Reference" to the shred project to all of your arduino sketch projects (right click References>add reference>shared project). Using 2) shared projects is recommended because you have more control over the sub folder structure and also the location of the shared code is easier to see/manage This video might help. https://www.visualmicro.com/page/vMicro-Videos.aspx#XPlatformSharedCode https://www.visualmicro.com/page/vMicro-Videos.aspx#XPlatformAddToExisting Does this make sense?
	« Last Edit: Dec 4^th, 2021 at 3:37pm by Tim@Visual Micro »

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Cong Quyen Knight Junior Member Offline Posts: 22 Joined: Nov 29^th, 2021	Re: extern cpp source file could not include internal header file Reply #2 - Dec 9^th, 2021 at 12:04am	Print Post
	Tim@Visual Micro wrote on Dec 4^th, 2021 at 3:15pm: It's not exactly clear but you might need to understand some build arduino rules and then, optionally, know how to extend that with vMicro ... Arduino expects source code in a folder with same name as the project. Therefore an arduino project/sketch would be:- sketch1 sketch1.ino sketch1_another.ino cpp/h files as you have sketch2 sketch2.ino sketch2_another.ino cpp/h files as you have If you want to add code to a sub folder below a sketch you must use a folder called "src". All folder can sketch1 sketch1.ino src/mycode1.cpp src/another_folder/mycode2.cpp .ino files always go in the root of the project You can include external files a couple of ways:- 1) Add individual files as a shortcut. This is a crude system, the linked shortcuts will be copied to the temp version of the project folder at build time. They will always be considered as in the project folder. (right click the project > add > existing item > select a file and note the "Add" option at the bottom of the window, select "Add as link") 2) Use a shared project (file>add>new>shared c++ project). When you use a shared project you will see that you can also add a "Reference" to the shred project to all of your arduino sketch projects (right click References>add reference>shared project). Using 2) shared projects is recommended because you have more control over the sub folder structure and also the location of the shared code is easier to see/manage This video might help. https://www.visualmicro.com/page/vMicro-Videos.aspx#XPlatformSharedCode https://www.visualmicro.com/page/vMicro-Videos.aspx#XPlatformAddToExisting Does this make sense? Shared Code help a lots. Thanks


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