CCS/TMS320F28335: Array forced to structure

I want to be clear on what you mean by the term byte.  On the C28x CPU, the smallest addressable unit of memory is a 16-bit word, and not an 8-bit byte.  For more background on this topic, please see the Variable Types part of the larger article C28x Code Generation Tips and Tricks.

With that in mind, if the term byte means an 8-bit wide unit of memory, then a structure cannot be aligned on a byte.  If the term byte means a 16-bit wide unit of memory, then a structure can be aligned on a byte.

Thanks and regards,

-George

Thanks for your reply.

If I need to force an array into a structure on 28335, is it allowed?

I'm not sure what you mean when you say ...

Susan Yang said:

force an array into a structure

Just for now, pretend that you can do it.  Please show an example of C code which does that.  The more details this example has, the better.

Thanks and regards,

-George

Suppose there is such a structure:

typedef struct FRAME

{

unsigned long int head;

unsigned int len;

unsigned int data;

unsigned long int tail

}FRAME;

The following is a buffer array, the data is as follows,

unsigned char buf[12] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 0x0a, 0x0b, 0x0c};

I hope to map this value to the structure,like

head = 0x04030201,len = 0x0605,data = 0x0807, tail - 0x0c0b0a09

How to realize this function？

BR,

SUSAN

Many thanks!