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Defining constants in DSP BIOS

Arye Lerner
Expert 1130 points

Hello,

 

I was just wondering - sometimes while defining properties of certain module (say, HWI interrupt or SWI interrupt) I run into possibility of passing an argument for a function. In help window for this option says:

Arg. This argument is passed to the function as its only parameter. You can use either a literal integer or a symbol defined by the application. This property is available only when using the HWI dispatcher.

When I pass integer, it works, but I dont know where I suppose to define/declare a constant - simply putting a constant in code does not works (and shouldnt, since DSP/BIOS does not knows where to look for it).

The question is how do I declare on constant in DSP/BIOS?

 

Regards

Arye

  • 0
    TI__Mastermind 24340 points

     

    If you want to use a constant, then right click on your project, select Build Options, Compiler tab, Category Preprocessor, Pre-defined Symbol -d. Put your argument there:

    ARGSWI=2;

    But you can have global variables as well. In your source file you can have a global variable for example:

    int argtest = 1;

    Then in your .tcf file you can put arg0 as:

    _argtest

    So arg0 parameter will be the address of the global variable argtest.