Hello :
I come from STM32 programming and I am new to Nordic device programming.
for nRF52840 DK, I am looking at the ble-blinking example and try to understand Softdevice event handling process flow.
I understand when a Softdevice has an event, it will trigger an interrupt and the interrupt service routine will execute the
nrf_sdh_evts_poll().
However,
I am not sure how the above evts-poll function will call the -- ble_evt_handler and the ble_lbs_on_ble_evt ? ( LED control)
How does the nrf_sdh_evts_poll() know the address of ble_evt_handler and the ble_lbs_on_ble_evt ? ( LED control)
There are some discussion saying the event handles are registered , so nrf_sdh_evts_poll() will know which handle to execute ?
Could you explain it in details ? ( event handling registration process , etc?)
I would like to understand how the Softdevice event handling works.
Thanks a lot !
ble_evt_handler(ble_evt_t const * p_ble_evt, void * p_context)
ble_lbs_on_ble_evt(ble_evt_t const * p_ble_evt, void * p_context)
void nrf_sdh_evts_poll(void)
{
nrf_section_iter_t iter;
// Notify observers about pending SoftDevice event.
for (nrf_section_iter_init(&iter, &sdh_stack_observers);
nrf_section_iter_get(&iter) != NULL;
nrf_section_iter_next(&iter))
{
nrf_sdh_stack_observer_t * p_observer;
nrf_sdh_stack_evt_handler_t handler;
p_observer = (nrf_sdh_stack_observer_t *) nrf_section_iter_get(&iter);
handler = p_observer->handler;
handler(p_observer->p_context);
}
}
