nrf52 consumes 3ma in sd_app_evt_wait()

[MosheHoori]

Hi,

In order to isolate the issue, I've created an app that :

1. switches to dc2dc mode.

2. calls sd_app_evt_wait() 

I still see 3ma consumption, 

sd_power_dcdc_mode_set(NRF_POWER_DCDC_ENABLE);
NRF_POWER->DCDCEN = 1;
for (;;)
{
        ret_code_t err_code = sd_app_evt_wait();
        APP_ERROR_CHECK(err_code);
}

 

any ideas? 

[Einar Thorsrud]

Hi,

There is nothing in the code snippet in your question that indicate high current consumption. What do you do before that? Can you upload your full firmware? Are you using custom HW?

You should get a current consumption of about 2 μA if you have a main function like this:

int main(void)
{
    while (true)
    {
        __SEV();
        __WFE();
        __WFE();
    }
}