nRF52832 custom board, chip not getting detected

[AshokY]

Hi Experts,

I am trying to design my custom board using nRF52832. I am using Segger jLink Mini EDU to connect/debug the chip/board.
I took Thingy:52 as reference and designed my board. Here are my details about board.

1) I verified voltages at rhe 52832 level and found ever thing is OK, pin48, 36, 13 are at 3.3 volts.
2) used both 32MHz and 32.768 KHz crystals.
3) I connected SWDIO and SWDCLK pins from 52832 to the Jlink Mini.

I am using nRFconnect V2.5.0 and Programmer Experimental to connect the board. When I tried to select the device, I could only get debug probe, no serial port was detected. I am using a fresh board here.

Can anyone let me know, what could be my problem?
Do I need to use any other SW/tool to get my board detected?
Will there be any problem in my board? if so, can anyone suggest any debug points ?

I can share my schematic, if needed.

Thanks,
AshokY

[MartinBL]

Serial Wire Debug (SWD) has nothing to do with Serial COM port (UART) and to program an nRF52 device you need SWD (a serial port is an optional feature). With external programmers like yours, you won't see "Serial port: COMx" listed in the nRF Connected apps. The latest version of nRF Connect Programmer should support JLink EDU Mini anyway, although we haven't tested this specific programmer.

1. Do you have problems programming or are you just wondering why you don't get a serial port?
2. Do you get any error messages in the Log window?
3. Can you confirm that  you have connected VDD and GND on your board to VTref and GND on the JLINK EDU?

If you are having problems programming, I suggest that you try nrfjprog as Turbo J mentioned, just to rule out any issues with nRF Connect Programmer.