nRF5340 Wake from sys_poweroff()

RE: nRF5340 Wake from sys_poweroff()

WesC — Fri, 27 Jun 2025 18:59:47 GMT

well Johnny did solve it.
adding

&gpio0 {

sense-edge-mask = <0x01800000>; /* 1<<24 | 1 <<23 */

};

to the overlay solved the issue

RE: nRF5340 Wake from sys_poweroff()

WesC — Fri, 27 Jun 2025 12:20:39 GMT

I have been working with Johnny. I think his works because of these 2 lines

gpio_pin_configure_dt(&sleep, GPIO_DISCONNECTED);

gpio_pin_interrupt_configure_dt(&sleep, GPIO_INT_DISABLE);

that is inside his power_off_handler.

But that routine is only called if the button is pressed to go into sys_poweroff.

but in my code if i go into IDLE prior to a button press, I get 50uA versus 5uA i get when using the DK_buttons_and_led.c Library.

I guess i need to understand what is happening in the dk_buttons_and_leds library that is holding the power low versus configuring the GPIO myself.

RE: nRF5340 Wake from sys_poweroff()

JONATHAN LL — Fri, 27 Jun 2025 08:52:11 GMT

Pleas have a look at the sample here, https://github.com/droidecahedron/blinkbuttonsleep/tree/btnsleep_5340 , Johnny recently updated it.

RE: nRF5340 Wake from sys_poweroff()

WesC — Thu, 26 Jun 2025 19:15:03 GMT

To add some more discussion. so if the sys_poweroff() is called in the button_changed routine from the dk_buttons_and _led.c Library it will get called when interrupts are disabled.

is this why it will not wake from a button press?

also is this why when we do not use the dk_buttons_and_leds.c library we see a higher IDLE current.