/* Set system clock prescaler configuration. 
This function will change the system clock prescaler configuration to match the parameters. */
void sysclk_set_prescalers(uint32_t ul_pres)
/* Set system clock prescaler configuration. 
This function will change the system clock prescaler configuration to match the parameters. */
void sysclk_set_prescalers(uint32_t ul_pres)
{
	pmc_mck_set_prescaler(ul_pres);
	SystemCoreClockUpdate();
}