case about nPM1300 GPORESET

[peter.min]

Hi，

Does it possible to achieve that when inserting a USB into nPM1300, the GPORESET of GPIO3 is triggered to reset the reset port of nRF4L15?

Best regards,

Peter.Min

[Edvin]

Hello,

I don't think you can do it exactly like this.

You can consider the implementation in the one button sample:

NCS\nrf\samples\pmic\native\npm13xx_one_button

Here you can see that it behaves like this:

The nPM1300 asserts GPIO3 when any enabled system event occurs, including VBUS insertion.

The Host MCU (e.g. nRF54L15) receives the interrupt on its GPIO pin (other than the reset pin)

The host firmware then reads the nPM1300's event registers over I2C to determine the cause and then it can take action and e.g. reset (software reset) if the event was indeed a VBUS insertion.

Best regards,

Edvin