Hi,
Using SDK 15.0 via legacy nrf_drv_power, the nrf_drv_power_sleepevt_init causes fault:
It calls nrfx_power_sleepevt_enable but never calls nrfx_power_sleepevt_init - and the result is an ASSERTION or fault in nrfx_power_irq_handler() as m_sleepevt_handler is NULL