NRF52840 and NRF5340 Power Consumption Comparison

[MantasPrevayl]

Comparing Current Consumption Between NRF52840 and NRF5340

 

Loading Zephyr HR sample code on both.

Connected to each using NRF connect and subscribed to HR UUID.

Measured the current using power Profiler.

Average Current for NRF52840 was 690uA

Average Current for Nrf5340 was 956uA

 

Considering the fact that NRF53 should be lower power device, why with this example of a “standard” app. What am I missing? I have attached the ppk files for reference.

[MantasPrevayl]

https://www.transfernow.net/dl/20210604OkFcQUHa/5HS7D4Rd

nordic file upload doesnt work so here is the link to ppk

[Hung Bui]

Hi, 
It's most likely the UART logging on the network core was not turned off. 
You can have a look here: https://devzone.nordicsemi.com/f/nordic-q-a/74092/high-power-consumption-when-running-the-ble-stack

Basically you need to add 

CONFIG_LOG=n
CONFIG_SERIAL=n

To the prj.conf file of the hci_rpmsg and then compile and flash that into network core. 

[MantasPrevayl]

Solved. Now the current is 100 uA