RE: CPU not going to sleep because of TIMER2 interrupt

Samer Mattar — Mon, 25 Mar 2019 13:57:45 GMT

I think the reason that this happened is because I used nrf_drv_timer_uninit without nrf_drv_timer_disable that is because the nrf_drv_timer_uninit function starts with
nrf_drv_common_irq_disable(nrf_drv_get_IRQn(p_instance->p_reg));

and then disables the timer this can result in theory that the timer interrupt happens exactly after the nrf_drv_common_irq_disable was called and before nrf_drv_timer_disable that will result in a pending interrupt that denies the WFE from entering sleep mode.