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  • Case ID: 296173
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High PSM current during queue mode with LwM2M Client sample

Kurt Simon

Hello there,

I am currently testing queue mode within the LwM2M example with the nrf9160. Now I have made some measurements with the PPK2. Thereby I was surprised that the floor current, while the client should be in PSM, is very high with about 400 uA. Is this value realistic for this sample?

Previously I had measured 2.4uA with the UDP sample (which is very optimized, but still). So I think maybe there is some setting enabled that I overlooked that is drawing the current. How can I improve the power consumption in this regard? I have already tried to apply the settings from the UDP sample.

I am using SDK v2.0.2 and the nrf9160 (Rev2).

Many thanks,
Kurt Simon

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    Hi, I will try to run the LWM2M sample here, and check if I see the same thing. My first thought is that this is caused by one of the UARTs being enabled. You can try to turn it off by using CONFIG_SERIAL=n in the prj.conf file, but that only works if the sample itself doesn't use the UART actively (except for logging). I'm not so familiar with that sample so I can't tell you right now, but I will test and get back to you.

    Best regards,
    Stian

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  • 0

    Hi, I will try to run the LWM2M sample here, and check if I see the same thing. My first thought is that this is caused by one of the UARTs being enabled. You can try to turn it off by using CONFIG_SERIAL=n in the prj.conf file, but that only works if the sample itself doesn't use the UART actively (except for logging). I'm not so familiar with that sample so I can't tell you right now, but I will test and get back to you.

    Best regards,
    Stian

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