TMS320F28P650DK: CODE COMPOSER STUDIO: Watch expression for a function-scope static variable

Hi Derrick,

Can you attach a small test case? It could be simple project with one source file. Or perhaps just the source file and your optimization level you are using.

Thanks

ki

For example, in a source file called my_file.c:

void function1(void)
{
    static char s_var;
}

void function2(void)
{
    static char s_var;
}

And then in the "Watch" window of CCS, I input the expression:

'my_file.c'::s_var

The expression will display the values from the static variable defined in function1. My question is, how do I direct CCS to display the static variable from function2?

Thanks for the details. I'll have engineering respond.

Hi Derrik,

I suspect these function-scoped static variables are treated as local by the debugger and would be only visible when halted inside the function.

Regards,
Oliver 

In my example, it does work. The static variable in function1 is visible even when the debugger is not halted inside the function. The only problem is that the expression is ambiguous when there are multiple variables with the same name. In this case, it defaulted to the variable definition in function1, but I'd also like to watch the static variable in function2.

It's starting to sound like it's a limitation of the IDE?

Hi Derrik,

After looking into this further I can confirm that this is a CCS limitation. In your case the debugger cannot disambiguate and simply returns the first static variable it found.

Regards,
Oliver