TMS320F28027: .ebss assignment

Ravi H

Part Number: TMS320F28027

I'm having shortage of space in

.ebss : > DRAML0 PAGE = 1

program will not fit into available memory. run placement with alignment/blocking fails for section ".ebss" size 0x15f8 page 1.

Can I assign .ebss to flash? The program builds but I'm not able to get timer interrupt running.

I have tried using:

#pragma CODE_SECTION(cpu_timer0_isr, "ramfuncs"); // in main file

ramfuncs : LOAD = FLASHA, // in cmd file
RUN = PRAML0,
LOAD_START(_RamfuncsLoadStart),
LOAD_END(_RamfuncsLoadEnd),
RUN_START(_RamfuncsRunStart),
PAGE = 0

The above didn't help.

Please help me to come over this.

over 7 years ago

0 Hakan B over 7 years ago

Expert 1110 points

Hi Ravi,

As far as I understand from the link below, you can't assign .ebss to flash.
processors.wiki.ti.com/.../C28x_Compiler_-_Understanding_Linking

It says:
"If you do not specify a generated section then the liker will try to place it for you. This may result in it being placed somewhere you don't want it to be. For example, the .ebss section may end up in flash which will not work!"

Also, please have a look at this:
www.ti.com/.../spru514p.pdf (table 4.2)

Regards,

Hakan

0 David M. Alter over 7 years ago in reply to Hakan B

TI__Guru 61235 points

Hakan is correct. .ebss is an uninitialized section (i.e. variables), and it must be linked to RAM.

Your .ebss section is quiet large, and too large to fit in the L0 SARAM. Do you have large arrays of variables in your code? It may be that you need to move to a large RAM device.

- David

0 Ravi H over 7 years ago in reply to David M. Alter

Expert 1475 points

Thanks Sir

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TMS320F28027: .ebss assignment