#include "at32f435_437.h"

void extend_sram(void);

void extend_sram(void) {
    // check if ram has been set to expectant size, if not, change eopb0
    if (((USD->eopb0) & 0x07) != FLASH_EOPB0_SRAM_512K) {
        flash_unlock();
        // erase user system data bytes
        flash_user_system_data_erase();

        // change sram size
        flash_eopb0_config(FLASH_EOPB0_SRAM_512K);

        flash_lock();

        // system reset
        nvic_system_reset();
    }
}