NRF52832 programming IC with qfn48 adapter

[ahmdm]

I have a nrf52 DK that I want to use to program the nrf52832 IC. I have bought a qfn48 adapter from here. I wish to use this adapter to place the IC then make connections with the NRF52 DK as follows:

DK     -> IC 

SWDIO -> SWDIO

VTG  -> VDD

GND_DETECT -> GND

SWCLK -> SWCLK

I am powering the IC using the adapter with an external supply. however the IDE doesn't seem to detect the board. 

basically I want to pre program an IC and then solder it on my custom board. 

any solutions?

Thanks.

[haakonsh]

You're missing the 6th connection:

DK GND --> IC GND. 

Also how does your grounding and supply pin decoupling look? You will most likely need to swap that pcb with one that is as close to our reference design as possible, otherwise that IC socket will probably not be able to support the nRFs during programming, and it will certainly not support it for debugging purposes. 

Your other options are:

A) Post assembly programming, like Andrew suggests. Either use a TC-2030 connector or get a cheap bed-of-nails from Shenzhen.  

B ) Pre assembly programming by a third party. The IC will be programmed and re-packaged onto new reels.

[ahmdm]

I am using this to power the IC externally. since this connects to the USB of the PC like the NRF DK the grounds are common eventually. though I have made the said connection as well. 

Do I need an oscillator and other components (like on the reference design) in order to just program it?

[awneil]

haakonsh said:

TC-2030

One of these: http://www.tag-connect.com/TC2030-IDC-NL

You can see an example of how to use it on the Nordic Dongle.

And here's one that I prepared earlier:

That's the 10-pin version - you can see the locating holes & connecting pads at top-left of the board.

Google will find you plenty of examples of home-made versions; eg,

Search for "Pogo Pins" or, as haakonsh mentioned, "bed of nails"

EDIT

"top-left" - not right!

[haakonsh]

You do not need an external oscillator for programming, but you need to ground and decouple the IC properly and that is not possible with that pcb without modifications to it.