CCS/TMS320F28335: invalid redeclaration error

Damini,

Can you provide more details please? What project are you building - your own or a TI example?

Thanks,

Sira

I am dealing with example code.

Damini,

This is TI example code, so it should build fine without error. Can you give details of your installation? CCS version, Compiler version, ControlSUITE or C2000Ware? Version?

yes, it is TI example code.

CCS version- 8.3.0

compiler version- TI v18.1.5.LTS

control suite

Damini,

Can you please provide me the exact path to this project? I don't see an example by this name in ControlSUITE.

Also, please download C2000Ware v1.00.06.00 and try the project in it and let me know if you see the same issue.

Thanks,
Sira

The code i used is given as example in the controlSUITE->libs->dsp->sgen->v101->doc file, and added the header file given in the same path controlSUITE->libs->dsp->sgen->v101->include .

And I also after I download C2000ware , I will let you know about the issue.

Thanks for your response.

I don't know what you mean by "example in the controlSUITE->libs->dsp->sgen->v101->doc file". You should be building the example projects in controlSUITE\libs\dsp\SGEN\v101\examples_ccsv4 and they all build fine for me.

If you're doing something else, it is likely you are doing something incorrect. Looking at the picture you posted, it appears there is something wrong in main.c. That is where you should focus. Redeclaration can occur due to missing include file guards (probably not the case here), or inadvertent redeclarations etc.

I will look into it.

Thank you.

#include <sgen.h>


typedef struct
{
unsigned int freq;
unsigned int step_max;
unsigned int alpha;
int gain;
int offset;
int out;
void (*calc)(void *);
}SGENT_1;

SGENT_1 sgen=SGENT_1_DEFAULTS;
int x1;



main ( )
{
sgen.offset=0;
sgen.gain=0x7fff; /* gain=1 in Q15 */
sgen.freq=5369; /* freq = (Required Freq/Max Freq)*2^15 */ /* = (50/305.17)*2^15 = 5369 */
sgen.step_max=1000; /* Max Freq= (step_max * sampling freq)/65536 */ /* Max Freq = (1000*20k)/65536 = 305.17 */
}

void interrupt isr_20khz()
{
sgen.calc(&sgen);
x1=sgen.out;
}




This is the code i am using and i have linked sgen.h file, that's it.
How to remove the error?

Thank you.

typedef struct
{
unsigned int freq;
unsigned int step_max;
unsigned int alpha;
int gain;
int offset;
int out;
void (*calc)(void *);
}SGENT_1;

The above structure is defined in sgen.h. If you have it in main.c as well, that would cause the redeclaration error. Remove it from main.c.

I tried it, but after i removed i am getting more errors.

Damini,

I am still unclear exactly what you are trying to do.

Did you build TI's EXACT example project? Does that build without error?

Because it seems to me like you are making some modifications of your own, which I don't have any visibility into. Because TI does not have example code where there's include sgen.h at the top of the file, and the same structure redefined later in the file.

I can help you only if I know what steps you have followed and if you follow the guidance I give.

I will update soon.

Thank you

Thanks, awaiting updates.