How to correctly implement the Deep Sleep → Wake-up function on nRF54L15DK.

[Karr]

I’m following the nRF54L Series Express Course – Lesson 5: Power Consumption Demo Part 2 sample code, using nRF54L15DK to test the deepsleep → wakeup functionality.
However, the wakeup doesn’t work in my case.

I suspect this is due to an incorrect GPIO sense configuration.
After checking multiple online posts and forum discussions, I found several suggested approaches, including:

• Calling

  nrf_gpio_cfg_sense_input(5, NRF_GPIO_PIN_PULLUP, NRF_GPIO_PIN_SENSE_LOW);

• Adding the following to the overlay (.dts) file:

  &gpio0 { wakeup-source; };

Unfortunately, none of these methods compile or work properly in my environment.

So, I’d like to ask:
  Is there any working example for SDK v3.0.2 that demonstrates deep sleep with GPIO wakeup on nRF54L15 or a similar board?

Also, could you please help confirm the following points?

1. Has the GPIO sense mechanism changed in SDK v3.0.2 (e.g., deprecated APIs, renamed functions, or new configurations)?

2. Does wakeup-source require a specific syntax or additional settings in the overlay/dts file for the nRF54L platform?

3. Does the original sample assume certain Kconfig, device tree, or board layer settings are already enabled?

Thanks in advance for your help!

[Sunil vignesh]

Hi,

can u try this 


static const struct gpio_dt_spec sw0 = GPIO_DT_SPEC_GET(DT_ALIAS(sw0), gpios);



void enableWakeupPin(void)
{
// Configure SW0 (button0) as input with pull-up or pull-down as needed
nrf_gpio_cfg_input(NRF_DT_GPIOS_TO_PSEL(DT_ALIAS(sw0), gpios),
NRF_GPIO_PIN_PULLUP);
// Enable sense for low level (button press) to generate DETECT event
nrf_gpio_cfg_sense_set(NRF_DT_GPIOS_TO_PSEL(DT_ALIAS(sw0), gpios),
NRF_GPIO_PIN_SENSE_LOW);
}

and call enableWakeupPin() before system_off

[Karr]

Thank you for your help.