CCS 5.3 - uninitialized variable (noinit)

Andy Kay

Intellectual 765 points

Other Parts Discussed in Thread: HALCOGEN

Hi there,

I'm working with RM46 and CCS5.3.

I want to use uninitialized variables.

How can I do that in source code?

I've tried something like this with a complete structure (app_no_init_t)

#pragma NOINIT (T_app_no_init)
app_no_init_t T_app_no_init;

But it doesn't seem to work...

Regards, Andy

over 11 years ago

0 A Arora over 11 years ago

TI__Mastermind 30845 points

Andy,

Have you had a chance to look into the following post?

http://e2e.ti.com/support/microcontrollers/hercules/f/312/t/179350.aspx

Please let us know if this does not work.

Regards,

Abhishek

0 Andy Kay over 11 years ago in reply to A Arora

Intellectual 765 points

Hi,

thanks - I will have a look at that...

I'm a little bit deeper into this and I forgot to mention that I'm using HalCoGen. My RAM is configured to use ECC checks.

It seems, that HalCoGen is clearing the whole memory to 0x00 in its startup code ("memoryInit(0x1U);" in file 'sys_startup.c'), so at the moment I see no chance to implement uninitialized variables.

Do you have any hint for me?

Best regards, Andy

0 A Arora over 11 years ago in reply to Andy Kay

TI__Mastermind 30845 points

Though not recommended, you could always skip this line from executing.

0 Andy Kay over 11 years ago in reply to A Arora

Intellectual 765 points

Here is my solution:

Since I need only a few (NoInit-) variables to implement something like a 'reset counter',
I have found a workaround with the help of the HTU2 memory.

In HalCoGen, I have HTU2 memory excluded from "Memory Built In Self test Enable" and "Memory Parity Self Check Enable".
So, the HalCoGen init-code will not set this HTU2 memory to 0x00.
HTU2 memory will not be changed by a CPU reset (see datasheet)

This is fine for me.

Regards, Andy

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CCS 5.3 - uninitialized variable (noinit)