How power efficient is k_msgq_get() in zephyr/include/generated/syscalls/kernal.h?

[JedH]

I have a product running on an nrf5340 and part of it is running a nordic sample project. In the sample project there is a call to `k_msgq_get()`. The program spends a lot of time waiting on this msgq() call. I want to know, how power efficient is the chip while running within this? If I am trying to maximize power savings, would it be worth it to write some logic to put the chip to sleep instead of waiting on the msgq() call? Particularly if I'm not concerned about the potential lag?

[JedH]

I am running the LE audio proto code, streaming audio.

The chip runs around 6-6.5 mA.

we have tried putting the main thread entirely to sleep the whole time, and the decoder thread entirely to sleep the whole time using k_sleep(), and it still uses 6 mA. Is this expected?

[Kazi Afroza Sultana]

Hello Jedediah,

Is the measurement setup is correct? 6-6-5 mA seems high current. To check your setup, you can try blinky example and measure the current consumption to check if the value is in range.

Thanks.

Best Regards,

Kazi Afroza Sultana