Functionality of four buttons and four LEDs

[Hitesh soramiya]

Hello,

Could you please tell us the functionality or use of four buttons and LEDs on the nRF52840 DK(development kit).

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?

How to load program or debug onboard for nRF52840 and controller(nRF5340-QKAA)? is it through usb or connector(P7-P12)?

Thank you

Hitesh Soramiya

[Didrik Rokhaug]

Hi,

Could you please tell us the functionality or use of four buttons and LEDs on the nRF52840 DK(development kit).

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

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?

The interface chip has two different purposes:

1. On-board debugger. This goes over SWD

2. USB <-> UART bridge.

How to load program or debug onboard for nRF52840 and controller(nRF5340-QKAA)? is it through usb or connector(P7-P12)?

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