BLE RADIO ON/OFF in interrupt handler

Question

Hi,
Am using NRF52 S132 softdevice,
I have a use case like when I press a button , I should turn off BLE. So I enabled an interrupt for button. Whenever this button is pressed in the interrupt handler I called
sd_ble_gap_adv_stop(); but it hanged .. Cant we call any softdevice related function in interrupt handler ?

RK · Accepted Answer

What's the priority of the button interrupt? If it's high then it's higher than the SVC call priority and the ARM Cortex will hardfault. It needs to be low if you want to call sd_* functions from it. 
 If it's that - this is discussed at least 5 times a week, a quick search would have answered the question; if it's not, then it didn't "hanged", there's an error or a hardfault, hit the break button and find out where you are and update the question with more information.

BLE RADIO ON/OFF in interrupt handler

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