J-link and custom board, "no device detected" in nRFgo

[cbp]

Hi,

I have designed a custom board with nRF51822 but when I connect the custom board and j-link with an adapter the program nRFgo can't detect the chip.

When I conenct nRF51 DK debug IN with j-link, the program nRFgo can detect it.

Any help? I measure the pin VCC in custom board when I put a battery and there is 2.79V, is it enough?

I don't know what is the problem..

Sorry if I wrote in bad english.

[Steven Grunza]

If you are using the J-Link LITE you need to have Vcc from your board at 3.3V since the J-Link LITE doesn't support other Voltage levels. If you look on the Segger J-Link LITE debugger page (https://www.segger.com/jlink-lite-cortexm.html) you'll see a note in the Features section about "3.3V target interface voltage".