RESET pin

[QuentinD]

Hello

I have several questions regarding the RESET pin used in your examples:

• When you press the RESET button of the PCA10056, is it possible to add code before it does a reset?
• Does pressing the RESET button allow you to do a full reset and get out of any crash? Or the level of the interrupt is not low enough compared to other interrupts?
• What does a power OFF - power ON do in addition to a reset via the button?

Thank you

[awneil]

Have you checked the nRF52840 Product Specification for details of the Reset pin behaviour?

[Kenneth]

When you press the RESET button of the PCA10056, is it possible to add code before it does a reset?

 No, it's hardware wired full reset. 

Does pressing the RESET button allow you to do a full reset and get out of any crash? Or the level of the interrupt is not low enough compared to other interrupts?

It will always do a hard reset. 

What does a power OFF - power ON do in addition to a reset via the button?

Please check:
https://infocenter.nordicsemi.com/topic/ps_nrf52840/power.html#concept_res_behav 

Also note that you can check the reset source by reading the RESETREAS register in the beginning of main(), make sure to clear the register after reading:
https://infocenter.nordicsemi.com/topic/ps_nrf52840/power.html#register.RESETREAS