Pin Assignments in nrf52840DK board

[Vahidreza]

Hello every one

Pin numbers on DK boards are printed as P0.08 or P1.20 etc. but in nrf_config.h files Nordic assigns numbers to the pins. There are pin numbers from 0 to 47 but I can not figure this out and find a relation between numbers 0 - 47 and pins like P0.08, P0.25, P1.04 etc.

Can anyone help me with this? I could not find a good link that describes this and I've got stuck in here...

[Jared]

Hi,

There are 48 GPIO pins on the nRF52840. The GPIO pins are divided into Port 0 and Port 1, where GPIO pin 0-31 is apart of port 0, and GPIO pin 33-48 is part of Port 1. The numbering restarts from 0 after 32, but with Port 1. For example P1.04 is GPIO at Port 1, Pin 4 which is equal to GPIO pin 36. 

See the GPIO chapter in the PS.

regards

Jared