Hello,
I have an nRF52840 chip (Holyiot nRF52840 module) and I want to program the chip using an nRF52840 DK. The Holyiot module is basically an nRF52840 mounted on a PCB.
So, I connected the following pins to P20 connector of nRF52840 DK and tried to program with nRFgo Studio. Although I am able to program nRF52840 DK itself, I am not able to program the second device.
1. P20. 1 (VDD_nRF) to V_nRF. In Holyiot, this is VDD/VDDH.
2. P20. 3 (SH_VTG) to V_nRF.
3. P20. 4 (SH_SWDIO) to SWDIO
4. P20. 5 (SH_SWCLK) to SWCLK
5. P20. 8 (SH_GND_DETECT) to GND.
5. P1. GND to GND (three GND pins on Holyiot).
The above setting did not work, I also connected VBUS to GND, no change.
Can you please help me find the problem?
Thanks