MSPM0G1506: How to run a program from SRAM

Zoey
Thank you for your reply.
This was very helpful.

I was able to confirm execution from SRAM, but after executing the function placed in SRAM,
I thought it would return to the calling function, but it didn't.
Is there any processing missing?
I have attached the section settings and the source code that was executed.
Sorry for asking again.
Please check.

Hi,

After finished function in RAM, you need to jump back again, or it will run into default handler

Regards,

Zoey

Hi,

Maybe the best way to do that: Just call function instead of make PC into the address.

int main(void)
{
    SYSCFG_DL_init();
//    __asm("ldr     r0, = 0x20205000\n");
//    __asm("mov     PC, r0\n");
    Func_RAM();

    while (1) {
    }
}

Hi Zoey

Thank you for your answer.
I did it.

I have one more thing to confirm: will the functions called by the functions defined with "__attribute__((section(".program_RAM")))" also be allocated to SRAM?

I'm sorry for asking multiple times. Thank you in advance.

Hi,

This is not a function, which is used in C syntax to decorate defined functions or variables.

Hi mori,

Just be careful, if you allocate your function into your SRAM and the MCU is power on again, the function will be missed, because the SRAM can not maintain the data after powering down.

Regards,

Zoey