How to declare a big arraw in User RAM with STM32H743ZI

Posted on November 23, 2017 at 11:31

Dear all,

I'm using STM32H743ZI (nucleo-H743ZI board)

This µc have 1Mb of SRAM (512 Kbytes of user sram ?)

When i declare array of 100k uint16

I have this error message :

'section `.bss' will not fit in region `DTCMRAM''

region `DTCMRAM' overflowed by 79544 bytes

How I can place this array in User SRAM ? Not in DTCMRAM ?

Thanks in advance

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Best answer by aneveux

Posted on November 23, 2017 at 14:05

I resolved my problem

I define my variable in specific sections

.mysection:

{

KEEP(*(.MysectionSection)) /* keep my variable even if not referenced */

} > RAM_D1

It's now ok,

Thanks

Guru

Posted on November 23, 2017 at 13:52

Use the attribute setting to direct the allocation into a different section?

Look at what you have defined in your linker script or scatter file.

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