RE: GPIOTE interrupt and BLE send resulting in hard fault

Nguyen Hoan Hoang — Wed, 04 Mar 2015 02:24:40 GMT

You need to setup app_scheduler and call app_sched_event_put(...) within the GPIOTE_IRQ handler to transfer the event handling to the app_scheduler. From the app_scheduler event handling you can call any Softdevice function.

RE: GPIOTE interrupt and BLE send resulting in hard fault

RK — Wed, 04 Mar 2015 01:25:24 GMT

This is discussed often, a search would have thrown up a number of answers.

What interrupt priority is your GPIOTE IRQ? If it's APP HI then it's above the priority in which the softdevice service calls run and you can't call a lower priority interrupt from a higher priority one, you get a hardfault.

Run your GPIOTE IRQ in APP LO priority if you want to call the softdevice directly. Or find a way to have the GPIOTE handler set up a call which is handled by a lower priority interrupt or the main context later.