The size values shown in the view are in bytes.

But I checked it, it seems size values are in words.(16bits)

I use below example to verify the size value.

erad_ex3_stack_overflow_detect

When stackoverflow happens, the functionCallCount is 249.

__TI_STACK_END is 0x7F8

Cmd file:

It seems there no way to change the format in which the data is presented in the Stack Usage view, I was unable to make any edits from what I saw and there are no directions online provided by TI on how to do this. This may just be something you have to keep in mind (i.e. divide the value by 2 to know how many words are needed for the stack).

No, I mean the actual size of the stack usage is word(16bits) not the byte(8bits)

I'm not sure I understand, so the Stack Usage view is in words, but you're expecting bytes? Or the byte value is shown somewhere else instead?

TI document says that The size values shown in the view are in bytes.

But in the above example I mentioned .I calculated, the size values shall be word(16bits).

I think TI's document give the wrong information.

W Z said:

But I checked it, it seems size values are in words.(16bits)

On C2000, I believe a char = byte = 16 bits?

Ki said:

On C2000, I believe a char = byte = 16 bits?

As far as they way it's stored, yes. Even if a variable is only 8-bits, it is stored at a 16-bit location because addresses are word-addressable. Although this may be confusing to a user, because not all devices are word-addressable.

I guess technically the documentation is correct, that it is still showing values in bytes (16 bits)? Am I misunderstanding?

A byte is always 8 bits, but the way it's stored on C2000 devices is at a 16-bit location. C2000 uses word-addressable memory, not byte-addressable.

The question here is whether the Stack Usage view is showing number of memory locations being used or number of bytes being used, since for our devices these are distinct.

Omer Amir said:

A byte is always 8 bits,

I've always been confused about this with C2000. I always referred to this document:

https://software-dl.ti.com/ccs/esd/documents/c2000_byte-accesses-with-the-c28x-cpu.html#:~:text=A%20byte%20is%20defined%20as,it%20refers%20to%2016%20bits.

"A byte is defined as the unit of data capable of holding a single character on any given machine. Hence, if the term "byte" is used on C2000 it refers to 16 bits. In summary: TMS320C28x bytes and words are equivalent (16 bits)."

I agree, that documentation is confusing; I think more in terms of what the customer is asking is an 8-bit memory location like a traditional byte. I'm not sure who manages that html page, but that should be changed.

Ok, it is indeed confusing. When searching E2E, i see varying points of view on this, even amongst TI'ers.

In any case, back to the original topic I found a related discussion for additional clarification.

https://e2e.ti.com/support/microcontrollers/c2000-microcontrollers-group/c2000/f/c2000-microcontrollers-forum/866405/compiler-tms320f280049c-problem-with-stack-size