cannot redirect flash's address to ram's address for execution in cc2650 launchpad

[phituong]

Hi guys,

I tried to copy a function from flash to ram in cc2650 launchpad. When it redirects to new address in RAM, the function is not called. Here is my code.
In linker script, RAM is configured with RWX, allowing code to be executed. I read document cc2650 and it allows RAM execution. https://www.ti.com/lit/ds/symlink/cc2650.pdf

This problem from Contiki-ng or MPU, MCU?

#include <stdio.h>
#include <string.h>
#include <stdint.h>

// Example function to be copied to RAM
void test_function(void) {
printf("Function running from RAM\n");
}

// Function to copy test_function to RAM and execute it
void run_from_ram(void) {
void (*ram_function)(void);
// Allocate space in RAM
uint32_t *ram_space = (uint32_t *)0x20000100; // Example RAM address

// Copy function to RAM
memcpy(ram_space, (void *)&test_function, 100);  // Adjust size as needed

// Cast RAM space to a function pointer and call it
ram_function = (void (*)(void))ram_space;
ram_function();  // **not redirecting to new address??????** 

}

int main(void) {
printf("Starting program...\n");

// Run the test function from RAM
run_from_ram();

printf("Program finished.\n");
return 0;

}