[jarnix]

:) not sure it's up to anybody to do it. To me "nRF51 SWM interface with pogo pins" means absolutely nothing, same for nRF52832 or STLink.

[pantalaimon]

I think GP means the SWD interface, which is a standard ARM programming/debugging connector.

I would advise against the ST-Links though as they expose a more high level protocol and don't always work with non-STM chips. FT232H dongles make for a more versatile programmer.