Expected power consumption for Mesh node

[choehyunho]

Hi teams,

We made BLE  mesh custom boards based on nRF52833.

These nodes are configured to send broadcast messages for every 10 seconds.

Currently, these boards uses 12~13mA in provisioned state.

Is this normal and expected or possible to reduce currents.

TIA

[choehyunho]

Hi Mttrinh,

I saw the linked question, and do as they recommended, but not working.

1. Adding NRF_POWER->DCDCEN = 1; in front of mesh_init() has no effect.

2. Adding it after mesh_init() causes Application Memory Access fault.

Any suggestion?

[Mttrinh]

Did you also try calling the sd_power_dcdc_mode_set(NRF_POWER_DCDC_ENABLE)?

[choehyunho]

sd_power_dcdc_mode_set() makes no difference whether I put it before/after mesh_init().

Is there any chance to reduce currents?

[Mttrinh]

It is weird that the current aren't reduced when the DCDC is enabled. Do you get any return codes when calling that function?

[choehyunho]

Hi, Mttrinh.

I am using Mesh SDK 4.1.0 and the result is following.

1. Call sd_power_dcdc_mode_set(NRF_POWER_DCDC_ENABLE) before ble_stack_init()

    Return 2 (= NRF_ERROR_SOFTDEVICE_NOT_ENABLED)

2. Call that function after ble_stack_init()

    Return 0 (= NRF_SUCCESS), but still there is no change in power current.