RAM Data retention after software reset

Gabriel Calin

Hello everyone,

How should a variable be declared in CCS 5.3 to not be initialized during usual pre_init procedure?

I would like to set a memory flag just before a soft-reset (PMMCTL0 = PMMPW | PMMSWBOR;) to be able to identify the source of specific conditions on my software.

Gabriel

over 11 years ago

0 Michael S over 11 years ago

TI__Mastermind 21285 points

Hi Gabriel,

A PRESISTENT #pragma should do the trick. This pragma initializes at load time but does not get zero-initialized after that (during c initialization).

#pragma PERSISTENT(x)

#pragma location = 0xC200  //memory address in RAM of your choice

int x=0;

Check out section 5.10.18 of http://www.ti.com/lit/ug/slau132h/slau132h.pdf for more details

0 Gabriel Calin over 11 years ago in reply to Michael S

Intellectual 300 points

Hello Michael,

It did the trick. Thank you for your support.

Gabriel

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RAM Data retention after software reset