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Program external board using NRF52 DK P20

Hi,

I am have a custom breakout board that uses the NRF52832 chip and I was able to program it using the J-link programmer and seperating ribbon cable to expose the Vtarg, GND, SWDIO and SWDCLK lines.

Now I want to use the NRF52 Development kit for programming it using the p20 lines. I tried using NRFgo studio but the studio would not recognize an external device for programming.

I hooked it up so

                     Vtarg->3.3V output on voltage regulator on board
                     SWDIO->SWDIO on board
                     SWCLK->SWCLK on board
                     GNDdet->GND on board

I am powering it using an external battery connected to a voltage regulator.

Thank you

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