Nrf52 Custom Board not detected by nrfgo studio

[RAJESHKUMAR C]

Hi, I have been programming Nrf52 custom board using the J-Link in the nrf52Dk and Nrfgo studio. Accidentally gave download to J-link from SES, The chip in the nrf52 gets programmed, not the chip in custom nrf52.

Afterwards tried connecting to the custom Nrf52 board using J-link, the J-link itself resets.

Don't know what happened to my custom board?

Any Ideas regarding this, Did i brick the Chip in the Custom board?

My connections of J-link with External Board is

VDD---> VTG of P20 in DK board SWDIO--> SWDIO of external board SWDCLK-->SWDCLK of external Baord GND DETECT--> GND of external Board GND--> GND of external baord.

[RAJESHKUMAR C]

Hi,

The Above problem is Solved. I simply tried the above mention once again the custom board starts working again.

Now the problem is the when i connect the J-link with custom board and click connect to target in SES, the j-link LED goes OFF.

But when using as Nrf52DK the J-link works fine.

Is there any other method is there to program the custom board rather than using J-link in the NRF52DK.

[RAJESHKUMAR C]

Hi Bjorn,

Got all the boards detected by the J-link in the Nrf52dk. The reason for not working is that i powered the external custom board using the CR2032 coin cell. When i powered it up by separate 3.3V source all the boards are working well.Yet to test Bluetooth Functionalities of the boards. Thanks for your suggestions.