Wake up from system off using LPCOMP

[Judge]

Hi everyone, I'm having a problem as follows: I am wanting to use LPCOMP to wake up the nrf52840 from system off mode. So can anyone give me an idea of ​​how to do that?

[Judge]

Hi, use sd_power_system_off() to put the system into system off, but as long as I turn off the config.hal.detection configuration, the system will automatically reboot when there is an impact on the AIN2 pin

static void lpcomp_handler(nrf_lpcomp_event_t event)
{
    NRF_LPCOMP->EVENTS_DOWN = 0;
    NRF_LPCOMP->EVENTS_UP = 0;
    NRF_LPCOMP->EVENTS_CROSS = 0;
}
void lpcomp_init(void)
{
    uint32_t err_code;
    nrf_gpio_pin_clear(NRF_LPCOMP_INPUT_2);

    nrf_drv_lpcomp_config_t config = NRF_DRV_LPCOMP_DEFAULT_CONFIG;
    config.hal.reference = NRF_LPCOMP_REF_SUPPLY_4_8;
    config.hal.hyst = NRF_LPCOMP_HYST_50mV;
    config.input = NRF_LPCOMP_INPUT_2;
    //config.hal.detection = NRF_LPCOMP_DETECT_UP;

    // init
    err_code = nrf_drv_lpcomp_init(&config, lpcomp_handler);
    APP_ERROR_CHECK(err_code);
    // enable
    nrf_drv_lpcomp_enable();
    // Lpcomp ready
    NRF_LPCOMP->TASKS_START = 1;
    while(NRF_LPCOMP->EVENTS_READY == 0);
    NRF_LPCOMP->EVENTS_READY = 0;

    sd_power_system_off();
}