CCS Compiler option problem

Adam said:

Why default compiler setup for OMAPL137 use -mv6400+ not -mv6740?

Just fyi about this question:

http://tiexpressdsp.com/index.php/-mv_option_to_use_with_the_C6747

The default should be mv6740 indeed.

Mariana,

I wrote new bti6000.dll. Now I can easy change compiler option from -mv6400 to -mv6740, but compiler doesn`t accept Opt Level: File (-o3), when linker start I get information about undefined symbol. This symbols are task and prd functions predefined in BIOS tcf file. I checked I can compile examples with -o3 option. Why with -o2 build is it o`k and with -o3 not? I didn`t find nothing about it in link from you.

Hi Adam,

Are these functions _myCLK and _myTask being used in your code?

If yes, please post your linker build options and .map file so I can take a look at them...

Hi Mariana,

In previous post I changed names of functions  _myCLK is dataIO(), _myTask is processing(), I post you files to take a look at them 8838.sbd.zip

Hi Adam,

Problem solved. Please read pages 55, 138 and 139 of the document:

http://focus.ti.com/general/docs/techdocsabstract.tsp?abstractName=spru187o

Please also see page 516 of document:

http://focus.ti.com/general/docs/techdocsabstract.tsp?abstractName=spru403o

When you use -o3, the functions that are not called by main are removed because "it seems" to the compiler that they are not being used. If the function is called by an interrupt or by DSP/BIOS, you need the pragma below:

#pragma FUNC_EXT_CALLED(dataIO);

Void dataIO()
{
int j=0;

....

}

#pragma FUNC_EXT_CALLED(processing);
Void processing()
{
Int32 i=0;       
    InitIntegration();
...

}