topic Re: CW 10.1 (Kinetis) - How to place functions and variables in .data section? in Kinetis Microcontrollers

CW 10.1 (Kinetis) - How to place functions and variables in .data section?

Focon — Wed, 13 Jul 2011 18:27:08 GMT

Hi,

Since CW 10.1 should be GCC based, i thought that this should work:

void

FuncInRam(void) __attribute__ ((section(".data")));

int

main()

{

FuncInRam();

}

void

FuncInRam(void)

{

...

}

But it doesn't. First of all, i wonder why the compiler complains about __attribute__ line. Secondly both going through the MAP-file and a debug session, shows me that the function is actually placed in .text section.

I have tried what was surgested in this thread:

https://community.freescale.com/thread/89042

With the same result, but this time the compiler complains about the #pragma line.

I am using CW 10.1 for microcontrollers (windows hosted) Standard Edition.

Also, I am unable to activate the GCC extensions, through the compiler settings. It says it doesn't know the -gcc flag.

Any help is appreciated, thank you.

Re: CW 10.1 (Kinetis) - How to place functions and variables in .data section?

Focon — Wed, 13 Jul 2011 18:45:05 GMT

For the variables part, I ofcourse mean, how to place variables in custom defined sections.

Re: CW 10.1 (Kinetis) - How to place functions and variables in .data section?

Focon — Wed, 13 Jul 2011 20:56:40 GMT

Further study at the infocenter and MCU_Kinetis_Compiler.pdf let me com to this solution:

#pragma define_section FUNCRAM ".data" far_abs RX

#pragma section FUNCRAM begin

void

FuncInRam(void)

{

...

}

#pragma section FUNCRAM end

int

user_main()

{

FuncInRam();

}