CCS/TMS320C6746: structure pointers

Hi Tom,

My structure definition is in some header file and I included it in this src file.

I declared the ptr as a pointer to EMAC_Desc.
EMAC_Desc *ptr ;

then I made the ptr point to some address of same structure.

ptr = pdc->pDescWrite;

where pDescWrite is also of type EMAC_Desc.
but still when I try to write to the structure variable using

ptr->BufOffLen = 60;

and debugging its not writing the value as 60.


Regards
Vishnu

Where is your structure declaration or structure memory allocation?

Your ptr has to be initialized to point to your structure.

VISHNUVARDHAN VATTE said:

But when I write to the strucure variables as below

ptr->BufOffLen = 60;

and debug the value in ptr->BufOffLen is not changing ?

The memory address in ptr, is it valid for your system?  With regard to that range of memory, is it configured for write access?  It is often the case that, when the system first comes up, not all of memory is available for use.  Special initialization steps need to occur during system startup.  Are all these details addressed?

Thanks and regards,

-George

Always check the return value from malloc for NULL.  Please see the last few paragraphs of this article (not from TI).

Thanks and regards,

-George