RE: Programming nrf51822 using Jlink

RK — Sat, 04 Mar 2017 05:59:56 GMT

That's not a real JLink, that's a clone which infringes on Segger's technology. Please don't buy knockoffs, get a proper JLink (the JLink EDU is affordable as long as you meet the criteria of non-commercial work)
Yes you need to connect SWDIO, SWDCLK, GND and VCC
You can't directly use anything arduino to program an nrf51 chip. There is an open source core here github.com/.../arduino-nRF5 which purports to provide the functions the chip needs for arduino type programming you can try.

As a newbie you are way better off purchasing a proper nrf51 or nrf52 kit from Nordic which comes with an onboard (official) segger you can use for programming that board or other nrf51 chips and either learn to program it the usual way, or try sandeeps core, or purchase Nordic's arduino compatible boards which you can program with arduino directly. You're going to have a hard job starting from scratch with one of those modules and making it work. And the development boards are cheap for what you get.

I usually advise people to get off arduino as soon as possible if you're really going to make a proper product and learn to program the chips natively.