About SAADC Power

RE: About SAADC Power

Carl Richard — Tue, 06 Oct 2020 10:30:56 GMT

Hi again!

It should be possible to do a similar configuration for more channels. See this thread, where Jørgen has attached the following project: devzone.nordicsemi.com/.../3343.saadc_5F00_low_5F00_power_5F00_multichannel_5F00_sdk15_5F00_3_5F00_0.zip
This shows how multichannel low power sampling can be enabled. The example is not BLE enabled, but it should be a simple transition.

In the thread above Jørgen also the describes the increased power consumption during multi-channel sampling. It is due to EasyDMA being enabled, and staying enabled after the SAADC is started.

Best regards,
Carl Richard

RE: About SAADC Power

AnsonTse — Mon, 05 Oct 2020 14:45:53 GMT

Hi Carl，Thanks for reply！

I using SDK12.1.0,And I tried SDK 15.3 and the problem still exists.

I've looked at the solution, but the content of the solution is 1 Channel,unfortunately,It not helpful to our problem.

RE: About SAADC Power

Carl Richard — Mon, 05 Oct 2020 14:15:25 GMT

Hello!

I suspect that this could be due to a bug in the driver. While I investigate that, could you see if the workaround in this thread works for you?

For convenience: which SDK are you using? The drivers are regularly updated, so it could be a fix in a later version.

Best regards,
Carl Richard