High power consumption when running the BLE stack.

RE: High power consumption when running the BLE stack.

johntaylor2 — Fri, 23 Apr 2021 12:11:48 GMT

Thanks! This did the trick. My new power usage is:

Average Current: ~11uA

Peak Current: ~14mA

RE: High power consumption when running the BLE stack.

Jørgen Holmefjord — Fri, 23 Apr 2021 11:49:31 GMT

Hi again,

You need to disable serial and logging for the child image (hci_rpmsg) in order to reduce the base current on the network core. This can be done by adding a configuration file as described on this page, or you can modify the conf-file directly in the hci_rpmsg sample directory:

devzone.nordicsemi.com/.../7827.prj.conf

I tested this with the peripheral_lbs sample, together with the prj_minimal.conf file, and I'm then seeing ~90uA average current on the nRF5340 DK.

Best regards,
Jørgen

RE: High power consumption when running the BLE stack.

Jørgen Holmefjord — Mon, 19 Apr 2021 15:50:46 GMT

Hi,

I'm checking internally if we have any low-power examples for nRF5340. In general, the current consumption of nRF53 should be comparable to nRF52 series, so your numbers seems quite high.

I will get back to you as soon as I have more information to share.

Best regards,
Jørgen