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  • Case ID: 356960
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Baseline Power Consumption Benchmarking on nrf52dk

federicoc

Hello Nordic Forum,

I ran the Power Profiler Kit on an nRF52DK development board to establish a baseline power consumption.

The current firmware project is quite simple, and I have removed most of the GPIO, including UART, to minimize power consumption.

I have not enabled power management yet, as I am focusing on benchmarking the current power usage.

Currently, the kit reads about 23.25 mA while running in the main loop. Does this seem reasonable?

Would I expect to achieve a significant reduction in consumption if I enable Power Management, or would this only be beneficial when I add sensors that implement power management interfaces?

Thank you in advance for your knowledge and support.

Kind regards,


while (1) {
k_sleep(K_FOREVER);
}

CONFIG_CPP=y
CONFIG_GPIO=y
CONFIG_I2C=y
CONFIG_I2C_NRFX=y
CONFIG_CBPRINTF_FP_SUPPORT=y
CONFIG_DEBUG=y
CONFIG_PRINTK=y
CONFIG_LOG=y
Parents Reply
  • 0 in reply to Vidar Berg

    Ok, so the configuration of board, ppk and wiring seems correct.
    I still struggle to understand how with everything disabled in
    prj.conf and overlay file and a code that only flashes an led on and off on the nrf52dk (pin 20), i read a current of 160uA when led is off.
    Is there a sample that has everything turned off and power mode configured for the lowest possible consumption that I can use for reference?

    Thank you

    CONFIG_CPP=y
    CONFIG_GPIO=y
    CONFIG_SERIAL=n
    CONFIG_PM_DEVICE=y
    &uart0 {
    status = "disabled";
    };


    &pwm0 {
    status = "disabled";
    };

    &bprot {
    status = "disabled";
    };

    &ccm {
    status = "disabled";
    };

    &ecb {
    status = "disabled";
    };

    &ficr {
    status = "disabled";
    };

    &gpiote {
    status = "okay";
    };

    &egu0 {
    status = "disabled";
    };

    &power {
    status = "disabled";
    };

    &reg {
    status = "disabled";
    };

    &egu1 {
    status = "disabled";
    };

    &egu2 {
    status = "disabled";
    };

    &egu3 {
    status = "disabled";
    };

    &egu4 {
    status = "disabled";
    };

    &egu5 {
    status = "disabled";
    };

    &rng {
    status = "disabled";
    };

    &ppi {
    status = "okay";
    };

    &nvic {
    status = "disabled";
    };

    &clock {
    status = "okay";
    };

    &uicr {
    status = "disabled";
    };

    &mwu {
    status = "disabled";
    };

    &wdt {
    status = "disabled";
    };
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