CCSTUDIO: CCS MSP430 Compiler // Predefined Symbol // Symbol with value

Hello Andreas,

Andreas Kaeberlein said:

How i can enter it in this window?

Are you asking how to add additional predefined symbols to the build options in that GUI? If so, you can use the "Add" button to add a new symbol:

Thanks

ki

Hi Ki, thanks for your comments. 

> Are you asking how to add additional predefined symbols to the build options in that GUI?

No.

I ask about how to insert at in the GUI, that it will be sended with: -DHWID_VARIANT=MYVAR1

The way with --define works, but not with -D.

Thanks.

Andreas Kaeberlein said:

I ask about how to insert at in the GUI, that it will be sended with: -DHWID_VARIANT=MYVAR1

Just add:

HWID_VARIANT=MYVAR1

This is what you have in the screenshot and that is correct.

Ok, but in ECLIPSE are the disabled Macros Grey, so this was with this setting not the Case:



And if i look for the Compiler Call option, this looks also strange:

--define=HWID_VARIANT=MYVAR2

Therefore i think something is wrong.

Thanks.

BR,

Andreas

What values are MYVAR1 and MYVAR2 set to?

Sorry for the confusing, its a string and the name is MYVAL1 and MYVAL2. We like to switch some Macros with this mimic:

#if HWID_VARIANT == MYVAL1
  #define MYDEFS ...    # config A
 
#elif HWID_VARIANT == MYVAL1
  #define MYDEFS ...    # config B
 
#else
  // No selection
  #error "Unsupported HWID_VARIANT value!"
#endif

That means CCS has to set the Macro HWID_VARIANT for case a to the value MYVAL1 and for case b to the value MYVAL2. If we write it in that way HWID_VARIANT=MYVAL1 then CCS calls the compiler with "--define=HWID_VARIANT=MYVAL2". In this call does defintily not work. How to bring CCS that will send our assignment with "-DHWID_VARIANT=MYVAL2". This will work.

Thanks for your help.

BR,

I believe the C preprocessor directive #if only supports integer constant expressions.

But look here:



in the help is the desired option listed. The overlay comment: "Aliases: --define -D..." and the -D is our option what should capable to do that.

Andreas Kaeberlein said:

The overlay comment: "Aliases: --define -D..." and the -D is our option what should capable to do tha

I'm not sure I understand.

Both -D and --define do the same thing. --define is the long form option and -D is the alias

https://downloads.ti.com/docs/esd/SLAU132M/index.html#SLAU132M_HTML/using-the-c-c-compiler.html#Table_2-11_Predefined_Symbols_Options%3FTocPath%3D2%2520Using%2520the%2520C%252FC%252B%252B%2520Compiler%7C_____14

--define=HWID_VARIANT=MYVAL2

and

-DHWID_VARIANT=MYVAL2

Should do the same thing.

Thanks for the comment. According to your link should it work:

--define=name[=def]

But in CCS12.4, the code disabling seems not to work:

See here, we've set it via --define=HWID_VARIANT=MYVAR2. But it's in grey.

Yes, I see the same behavior if MYVAR1 and MYVAR2 are undefined. Once they are properly defined, then it works.

Exactly this seems not to work, see the code snippet above. The Overlay Menu says: Macro Expansion MYVAR2, but the branch with equal MYVAR2 is in grey --> does not work, at least in the editor.