Problem with advertising reset

Question

Hi,
I try to turn off the advertising after the first connection and then turn it on after pressing the button, this is what I wrote: 
 void radio_notification_evt_handler(bool radio_evt)
{
 if (radio_evt)
 {
 //radio going active
 LEDS_INVERT(BSP_LED_1_MASK);
 if (connection_occurance) sd_ble_gap_adv_stop();
 } 
}
 
 // 
 void GPIOTE_IRQHandler(void)
{
 printf("Are you here?");
 ble_advertising_start(BLE_ADV_MODE_FAST);
 if(NRF_GPIOTE->EVENTS_PORT)
 NRF_GPIOTE->EVENTS_PORT = 0;
}
 
 Program comes to the handler of button interrupt but there the program is crashing. This problem is quite suprising for me, because I reset advertising in other application and there it's work well. Only difference is that in the other case I turn off and immediately turn on advertising, and in this application I wait for button.

Wojtek · Accepted Answer

I am not familiar with advertising module (i just don't use it to advertise), but i think this is because you cannot call SVC from higher priority context. I assume your GPIOTE IRQ have higher priority than SVC, so it causes hardfault. You just have to leave somehow from interrupt context (just set a flag in irq handler?) and start advertising by checking the flag. about ble_evt_dispatch and sys_evt_dispatch - they are used to propagate BLE and SOC events in app, you can read about it here and here

Problem with advertising reset

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