High current consumption after creating a new task on freertos

[kevinlam]

Hello,

MCU: 52832

SDK: nRF5_SDK_17.0.2_d674dde

I am currently using ble_app_hrs_freertos_pca10040_s132 as starting point with SEGGER Embedded Studio as debugger. Below is the current consumption sequence with different modifications:

1) ~7.3mA - Original Code

2) ~3.5mA - After adding below code

// Set power mode
err_code = sd_power_mode_set(NRF_POWER_MODE_LOWPWR);
APP_ERROR_CHECK(err_code);

// set dcdc mode
err_code = sd_power_dcdc_mode_set(NRF_POWER_DCDC_ENABLE);
APP_ERROR_CHECK(err_code);

3) ~40uA - After set NRF_LOG_ENABLED to 0

4) ~3.5mA - After creating new task

I am suspecting that there is idle / sleep issue on FreeRTOS after creating a task, same issue happened for NRF log task. Please advise how can I fix this issue and getting a normal current consumption.

Thanks and best regards,

Kevin

[Susheel Nuguru]

Can you please add the code for the new task so that i can check why it is consuming so much power? Is the task yielding properly?