Power consumption of Matter template example

RE: Power consumption of Matter template example

Marte Myrvold — Fri, 24 Feb 2023 09:43:51 GMT

Hi,

The child polls its parent for data. During sleep, the SED's radio is turned off, and the device is not listening for packets. If packets are sent to the SED, the parent will keep the packet until the child polls for them.

You can find more information about the polling interval's maximum values and other possible parameters in the Thread specification.

Best regards,
Marte

RE: Power consumption of Matter template example

filipmrazek — Fri, 24 Feb 2023 08:23:09 GMT

Hi,

I tried to setup CONFIG_CHIP_SED_IDLE_INTERVAL to higher value and it works, thank you. It changes the interval of the spikes in the current consumption. What's the purpose of these polls? Is it for pinging the server to notify that the device is still alive? What is the maximum value I can set? Is there any overview of all parameters which can be set?

RE: Power consumption of Matter template example

Marte Myrvold — Wed, 22 Feb 2023 14:24:10 GMT

Hi,

If you have not configured CONFIG_CHIP_SED_IDLE_INTERVAL and CONFIG_CHIP_SED_ACTIVE_INTERVAL in prj.conf yourself, then they will be set to their default values of 1000 ms. Thus, the SED wakes every second to poll data, which might be causing the spikes you see in the current consumption. Try increasing the intervals by setting them to a value larger than 1000 ms in your prj.conf and see if that affects the spikes.

Best regards,
Marte

RE: Power consumption of Matter template example

filipmrazek — Wed, 22 Feb 2023 08:54:23 GMT

Hi Marte,

Sorry for causing confusion, I'm using SDK v2.2.0.

Where should I look for the CONFIG_CHIP_SED_IDLE_INTERVAL and CONFIG_CHIP_SED_ACTIVE_INTERVAL values, please? I searched through the whole project and I didn't find any occurrence of these parameters. I expect they should be in Kconfig or matter.template.

I can't use SSED because my version of OTBR does not support that. (And I always thought SSED has to have higher power consumption due to synchronization procedure)

RE: Power consumption of Matter template example

Marte Myrvold — Tue, 21 Feb 2023 12:34:50 GMT

Hi,

You say you are using v2.0.2, but the documentation you link to is for v2.2.0. Can you verify whether you are using v2.0.2 or v2.2.0?

What are CONFIG_CHIP_SED_IDLE_INTERVAL and CONFIG_CHIP_SED_ACTIVE_INTERVAL set to, and do you see any difference when changing these?
Have you tried using Synchronized Sleepy End Device (SSED) instead of regular SED? You can enable this with CONFIG_CHIP_THREAD_SSED=y.

Best regards,
Marte