CodeWarrior for MCUのトピックRe: codewarrior 10.2 used RAM

codewarrior 10.2 used RAM

ngsoftuser — Tue, 01 Jan 2013 08:01:48 GMT

Hi all,

How can I tell the RAM amd flash used by my MCU (MC9S08DZ60)?

I looked in the map file but it is not very clear.

I am asking this because we are in a cost reduction phaze where we are looking for a MCU with less RAM and flash.

Thanks.

BlackNight — Tue, 01 Jan 2013 08:39:02 GMT

Hello,

for Code/Flash size, the simplest way is to look at the end of the map file:

Total size of all blocks to be downloaded: 29963

That means: 29963 bytes in Flash.

To get more details, have a look at the text just above the vector allocation:

Summary of section sizes per section type:

READ_ONLY (R): 750B (dec: 29963)

READ_WRITE (R/W): F63 (dec: 3939)

NO_INIT (N/I): 7E (dec: 126)

Again, here the code size (29963). The RAM is the sum of 3939+126=4065 bytes.

Hope this helps.

ngsoftuser — Tue, 01 Jan 2013 08:42:50 GMT

Hi Erich,

but how do i get the ram size? is it READ_WRITE (R/W)?

Thanks.

BlackNight — Tue, 01 Jan 2013 08:46:27 GMT

Hi Eran,

(R) is read-only (flash), (R/W) is initialized RAM and (N/I) is not initialized RAM (Stack).

So the RAM used is (R/W)+(N/I).

ngsoftuser — Tue, 01 Jan 2013 08:47:59 GMT

Thanks.

And for that i still needs to add the stack size or it is already calculated in the "(R/W)+(N/I)."?

BlackNight — Tue, 01 Jan 2013 08:51:27 GMT

(N/I) *is* the stack size already. if you sum up (N/I) plus (R/W) then you have the total amount of RAM used.

ngsoftuser — Tue, 01 Jan 2013 08:52:09 GMT

Thank you!!!