RE: Maximal power efficiency in main loop - further question

Daniel Reisfeld — Wed, 22 Aug 2018 11:40:22 GMT

Sigurd, Great, Thanks! Daniel

RE: Maximal power efficiency in main loop - further question

Sigurd — Wed, 22 Aug 2018 11:24:34 GMT

Hi,

[quote userid="67166" url="~/f/nordic-q-a/37681/maximal-power-efficiency-in-main-loop---further-question"]Do I need to change my main loop?[/quote]

No. After the CPU is done with the interrupt handler, it will go back to main context and go to sleep.

Note that if you are using the nrf_log module, you might want to process pending log operations before going to sleep using NRF_LOG_PROCESS().

Note that in SDK 15, the BLE examples mostly uses the power management module. So it typically looks like this:

    // Enter main loop.
    for (;;)
    {
        idle_state_handle();
    }

where idle_state_handle() is defined as:

/**@brief Function for handling the idle state (main loop).
 *
 * @details Handle any pending log operation(s), then sleep until the next event occurs.
 */
static void idle_state_handle(void)
{
    if (NRF_LOG_PROCESS() == false)
    {
        nrf_pwr_mgmt_run();
    }
}