DA14580 wkupct

我想to change the advertising's last byte of the UUID when I wake up from a GPIO interrupt to indicate which GPIO woke it up. Using the beacon_v_5.40.2_0 project, I'm declaring the callback as follow:

void tilt_wakeup_cb(void)
{
if (GetBits16(SYS_STAT_REG, PER_IS_DOWN))
{
// Return GPIO functionality from external wakeup GPIO
if (DEVELOPMENT_DEBUG)
GPIO_reservations();
periph_init();
}
tilt_wkup_flag = 1;
user_advertise_operation();
}