TMS320F28335: Managing Memory

Ridvan Kapaklikaya

Part Number: TMS320F28335

I have a question about managing memory.

"../F28335.cmd", line 133: error #10099-D: program will not fit into available memory. run placement with alignment/blocking fails for section "ramfuncs" size 0x1009 page 0. Available memory ranges:
RAML0 size: 0x1000 unused: 0x1000 max hole: 0x1000
error #10010: errors encountered during linking; "F28335.out" not built.

This is error message. There are several arrays which has 250-300 element and I have to shift each element one decreases.

T_AC_err[200] = T_AC_err[199];
T_AC_err[199] = T_AC_err[198];
T_AC_err[198] = T_AC_err[197];
T_AC_err[197] = T_AC_err[196];
T_AC_err[196] = T_AC_err[195];

The operation takes up too much memory. Is it possible to use less memory by shifting this process completely from memory as an address?

Thanks for your replies.

over 2 years ago

+1 Siddharth Deshpande over 2 years ago

TI__Mastermind 36305 points

You can combine memory section in the linker command file and then try to allocate.

You can refer the following post

https://e2e.ti.com/support/tools/code-composer-studio-group/ccs/f/code-composer-studio-forum/647802/compiler-tms320f28377d-combining-different-memory-sections-in-linker-cmd-file

Best Regards

Siddharth

+1 Ridvan Kapaklikaya over 2 years ago in reply to Siddharth Deshpande

Prodigy 15 points

Firstly, I am pleased your reply.

RAML0 : origin = 0x008000, length = 0x001000 /* on-chip RAM block L0 */
RAML1 : origin = 0x009000, length = 0x001000 /* on-chip RAM block L1 */
RAML2 : origin = 0x00A000, length = 0x001000 /* on-chip RAM block L2 */

I removed 3 different RAM blocks that were like this.

And I recreated it by combining it like this;

RAML0L2 : origin = 0x008000, length = 0x003000

The change I made solved my compilation problem, but will it cause any problems in the operation of the program?

Best Regards

0 Siddharth Deshpande over 2 years ago in reply to Ridvan Kapaklikaya

TI__Mastermind 36305 points

No, it won't cause any issue during execution of the program.

Best Regards

Siddharth

0 Ridvan Kapaklikaya over 2 years ago in reply to Siddharth Deshpande

Prodigy 15 points

Thank you for your interest and reply. Another question is; the shifting operation has so much time in interrupt. I would like to decrease the interrupt time. Is there any way to decrease time for this operation?

Best Regards.

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TMS320F28335: Managing Memory