RE: Functionality of four buttons and four LEDs

Didrik Rokhaug — Fri, 17 Jun 2022 12:06:53 GMT

Hi,

[quote user=""]Could you please tell us the functionality or use of four buttons and LEDs on the nRF52840 DK(development kit).[/quote]

They can be used by the application running on the nRF52840.

[quote user=""]Also could you tell us the which interface have been used to communicate between onboard nRF52840-QIAA and controller Those are been communicated through UART and USB?[/quote]

The interface chip has two different purposes:

1. On-board debugger. This goes over SWD

2. USB <-> UART bridge.

[quote user=""]How to load program or debug onboard for nRF52840 and controller(nRF5340-QKAA)? is it through usb or connector(P7-P12)?[/quote]

USB is the most common.

For more information about the DK, I recommend you look at the documentation: https://infocenter.nordicsemi.com/topic/ug_nrf52840_dk/UG/dk/intro.html

Best regards,

Didrik