Avoid Ram Clear in Startup

goodarz kashian

Other Parts Discussed in Thread: CC430F6137

Hi everybody,

Is there any way to avoid clearing the RAM During MCU reset, and Startup ?

I'm using IAR MSP430 Version 5.20 and my chip is cc430f6137

i tried : #define IGNORE_DATA16_DATA (i saw it in cstartup.s43) but it seems has no effect because after a reset all ram space is set to zero.

i know i can lock R4 & R5 registers but i need more than 32 bit space of RAM

thank you in advance

0 old_cow_yellow over 12 years ago

Guru 58965 points

goodarz kashian said:

... after a reset all ram space is set to zero. ...

Not all ram, I do not think that is true.

Only variables are initialized and if you do not specify the initial value, it is set to zero. You can use __no_init to suppress initialization.

0 goodarz kashian over 12 years ago in reply to old_cow_yellow

thank you for quick reply.

indeed that was my mistake, only variables are initialized.

i used the __no_init before declaring my variables and problem solved.

thank you very much

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