wkupct_enable_irq doesn't work for me, please help

irq is setuped for p2_7.

the problem is:
1)if executing in ide step by step debug mode, it goes sleep and just observed advertise sent out once by sniffer. but if pressing the p2_7 key, it doesn't fire a call to resume or any other method I set breakpoint.
2)if exiting ide step by step debug mode, I observed the advertise is sent out continuously, but why it is fired even I don't press the button to trigger p2_7, I guess it might be due to debouncing. after changing the number , it is still like that.
3)if I comment out "user_app_adv_start();" from resume method, I didn't observe advertise sending out continuously.

the question is:
1) how to just fire one interrupt only when I press the button.
2)is there any way to set a breakpoint in ide debug mode in "resume from sleep" method?

codes in setup
wkupct_register_callback(wake_up_cb);
wkupct_enable_irq(0x800000, 0x800000, 15, 20);
wake up method
void wake_up_cb(void)
{

if(GetBits16(SYS_STAT_REG, PER_IS_DOWN))
periph_init();

arch_ble_force_wakeup();
arch_ble_ext_wakeup_off();

}

resume from sleep
void user_resume_sleep(void)
{
user_app_adv_start();
}

timer callback to set device to deep sleep
static void adv_data_update_timer_cb()
{

app_adv_data_update_timer_used = 0xFFFF;

app_easy_gap_advertise_stop();
arch_set_deep_sleep();
arch_ble_ext_wakeup_on();
}