Power optimizatio of battery operated device

RE: Power optimizatio of battery operated device

Ankit_chauhan — Thu, 22 Aug 2024 05:25:56 GMT

Thanks for sharing the guide.

RE: Power optimizatio of battery operated device

Sigurd — Wed, 21 Aug 2024 11:00:45 GMT

Hi!

No, you don't need BT_SHELL or UART for BLE OTA DFU.

Check out this guide on how to add BLE OTA DFU to your application:

https://academy.nordicsemi.com/courses/nrf-connect-sdk-intermediate/lessons/lesson-8-bootloaders-and-dfu-fota/topic/exercise-3-fota-over-bluetooth-low-energy/

RE: Power optimizatio of battery operated device

Ankit_chauhan — Wed, 21 Aug 2024 04:21:26 GMT

Hi PJ,

Thanks for the response.

I agree on the minimal current advantage of nRF. I also achieved around 60uA with BLE working so my application could also reach around that current reading.

But here the issue is, as I mentioned in the second point I am not able to perform the BLE DFU without enabling the BT_SHELL, and if I enable the BT_SHELL my current jumps to 3mA.

Is it true that the BLE DFU requires the SHELL? I guess the DFU uses the service and characteristics only. If the DFU uses the SHELL, is there any configuration that can be done to reduce this 3mA?

Note: My SHELL is running on UART0.

Regards,

Ankit.

RE: Power optimizatio of battery operated device

PjGlasso — Tue, 13 Aug 2024 14:56:11 GMT

Hi there,

Yes I would agree that is too High, Over on the Seeed Studio forum , they have it down to 5uA for sleep. The code turns off the Flash , chip and a DCto DC regulator, disconnect the Serial connection and use the battery pads only for measure with PPKII .

The lowest power was achieved by using minimal Bootloader also.

Look forward to a response here on this.

GL :-) PJ