µVISION: Multiple Programs from 1 Source File Set

Information in this article applies to:

• µVision Version 3 and later

QUESTION

I need to create 2 programs from the same set of source files. I know that µVision supports multiple targets, but I am not sure if I can solve the following requirements with that?

• The programs are different by just a single source file. Is it possible to exclude source files from a target?
• I am using conditional compiling. Is it possible to have different defines that are derived by a target.

ANSWER

Yes, the µVision targets allow you to solve these problems. First you need to create a target as described below:

1. Create a µVision project.
2. Rename Target 1 (in the Project Window or by using the dialog Project - Components, Environment and Books) to the name of the first program you want to create.
3. Add all of your source files to this target. If you have a group of files that will be excluded from the second program, create a new group for them in the dialog Project - Components, Environment and Books.
4. In the dialog Project - Components, Environment and Books add a new target for the second program.

Now you may switch between the targets by using the selection line in the Build toolbar.

To exclude source files from a target:

1. Right click on the file or group that you want to exclude from the second program and use the Options for ... from the context menu to open the Options - Properties dialog.
2. Uncheck Include in Target Build to exclude a source file from a target. You may apply this on a single file or on a file group.

To use conditional compiling with a target:

1. Open the dialog Project - Options for Target.
2. In the Compiler page you may enter pre-processor symbols under Define. These symbols are tested using #if, #ifdef, and #ifndef preprocessor directives in the source files.
3. In the Assembler page you may enter Set symbols that are used in $IF and $ELSEIF directives to control conditional assembly sections.
4. Again, you may apply these symbol settings even on a single file or on a file group when you right click on the file or group that use the Options for ... dialog from the context menu.

SEE ALSO

• µVision: Grey Check Boxes in File and Group Options

Last Reviewed: Wednesday, December 9, 2020