Power consumption in idle mode.

RE: Power consumption in idle mode.

eGate2022 — Sun, 11 May 2025 12:58:24 GMT

Hello Vidar,

Thanks for your help. I am now draining less than 20 µA (including all components around the SOC).

We can close the case.

BR/

Alain

RE: Power consumption in idle mode.

eGate2022 — Fri, 09 May 2025 16:39:03 GMT

Hello,

I may have found the problem. I'll check again and if so, I'll close the file.

BR/

Alain

one line was missing.

 nrf_gpiote_latency_set(NRF_GPIOTE,GPIOTE_LATENCY_LATENCY_LowPower);

RE: Power consumption in idle mode.

eGate2022 — Fri, 09 May 2025 10:41:43 GMT

Hello,

Unfortunately, I can't share the whole project because the code is huge (4 years of R&D) and the hardware platform is custom.

When I run an example of sdk code for idle mode that does not involve SOC peripherals (e.g. GPIO), the current consumption is as expected (low). Clearly, the peripherals in question are being driven.

Is there a way to determine which SOC peripheral is active?

Best regards,

Alain

RE: Power consumption in idle mode.

Vidar Berg — Fri, 09 May 2025 06:30:45 GMT

Hello,

I see you are using a mix of nrfx HAL and zephyr GPIO api and that you are configuring GPIOTE IN events here directly with the nrfx HAL. Are you able to share your project here so I can have a look at it and maybe try to test it on a DK?

Best regards,

Vidar

RE: Power consumption in idle mode.

eGate2022 — Thu, 08 May 2025 22:08:23 GMT

Hello,

I used the following code and the result is still the same (350µA). I'm not sure if the code is correct.

BR/

A.

 gpio_pin_interrupt_configure_dt(&config->pmu_det_spec, GPIO_INT_DISABLE);
 gpio_pin_interrupt_configure_dt(&config->pmu_int_spec, GPIO_INT_DISABLE);
 
 nrf_gpiote_task_configure(NRF_GPIOTE, GPIOTE_CHANNEL_INT,
 NRF_GPIO_PIN_MAP(1, config->pmu_int_spec.pin), // Port 1, Pin 13
 NRF_GPIOTE_POLARITY_HITOLO, // High-to-low transition
 NRF_GPIOTE_INITIAL_VALUE_HIGH); // No initial task

 // Enable the event for the GPIOTE channel
 nrf_gpiote_event_enable(NRF_GPIOTE, GPIOTE_CHANNEL_INT);
 nrf_gpiote_task_configure(NRF_GPIOTE, GPIOTE_CHANNEL_DET,
 NRF_GPIO_PIN_MAP(1, config->pmu_det_spec.pin), // Port 1, Pin 14
 NRF_GPIOTE_POLARITY_HITOLO, // High-to-low transition
 NRF_GPIOTE_INITIAL_VALUE_HIGH); // No initial task

 // Enable the event for the GPIOTE channel
 nrf_gpiote_event_enable(NRF_GPIOTE, GPIOTE_CHANNEL_DET);

RE: Power consumption in idle mode.

eGate2022 — Wed, 07 May 2025 21:47:43 GMT

Hi,

Thank you i will try it.

BR/

RE: Power consumption in idle mode.

Vidar Berg — Wed, 07 May 2025 12:52:16 GMT

Hi Alain,

I can't think of anything that should cause a floor current of 330 ua, but for the button interrupts, are you using the PORT interrupt and not the GPIOTE IN events? The latter will lead to an higher floor current.

How to use port events:

how to reduce NRF52840 GPIOTE's power consume under NCS 2.9.1 ?

Best regards,

Vidar