calling sd_power_pof_enable(), error code = 2

[DYNAMICTOYS]

Hi,

I am using nRF51822, S130, SDK 12.3.0 Want to use is low power failure warning. using the following code. However, when break on line err_code = sd_power_pof_enable(), it has error code 2.

Any idea what is wrong?

uint32_t err_code;

err_code = sd_power_pof_enable(POWER_POFCON_POF_Enabled << POWER_POFCON_POF_Pos);
APP_ERROR_CHECK(err_code);

err_code = sd_power_pof_threshold_set(POWER_POFCON_THRESHOLD_V27);
APP_ERROR_CHECK(err_code);

// Subscribe for Sys events.
err_code = softdevice_sys_evt_handler_set(sys_evt_dispatch);
APP_ERROR_CHECK(err_code);

static void sys_evt_dispatch(uint32_t sys_evt) { if (sys_evt == NRF_EVT_POWER_FAILURE_WARNING) { testData = 0; } }

Thanks a lot!

Martin

[DYNAMICTOYS]

Thanks for the reminder.

After I had enable the softdevice, sd_power_pof_enable() running well.

err_code = sd_softdevice_enable(NRF_CLOCK_LF_SRC_RC, softdevice_assert_callback); APP_ERROR_CHECK(err_code);

err_code = sd_power_pof_enable(POWER_POFCON_POF_Enabled << POWER_POFCON_POF_Pos);
APP_ERROR_CHECK(err_code);

err_code = sd_power_pof_threshold_set(POWER_POFCON_THRESHOLD_V27);
APP_ERROR_CHECK(err_code);

// Subscribe for Sys events.
err_code = softdevice_sys_evt_handler_set(sys_evt_dispatch);
APP_ERROR_CHECK(err_code);

However, since my project is using GZLL protocol. after softdevice enabled, following line will just hangup. Is that mean I cannot enable softdevice and run GZLL?

bool result_value = nrf_gzll_init(NRF_GZLL_MODE_DEVICE);

Thanks!

[RK]

no idea at all - know nothing about gazelle. You don't need the softdevice just to detect POF, if that's all you're using it for.

[Jørgen Holmefjord]

If you are not planning to run both BLE/ANT and Gazell on the same chip, you do not need softdevice. You can use the POWER driver in the SDK to setup POF if not using a softdevice.

[Elkana]

Using nRF52840, SDK 15.0.0, softdevice 6.0 and FreeRTOS

I am trying to use Power POF before and after sofdevice is enabled.
If I understand correctly, I have to use : nrf_drv_power_pof_init() twice - before and after softdevice is enabled. 
Can you guide me how to do it?