jlink problem

[Miroslav]

Hi, My Jlink lite CortexM work with nrf51822 DK boards. But my PCB with nrf51822_xxAA chip can't download code. I'm using ukeil When I chek in utilities Jlink can't recognize SW IDCODE of device. All is set good. PCB is 100% good. Thank you.

[Miroslav]

Problem solved, I placed 100 ohm resistor serial and 12k to ground. I shortened lines 2 times and now all working. Thank you all!

[MartinBL]

Hi. As some people have already asked:

• Can you share a diagram of your J-Link <-> PCB connections?
• And what sort of J-Link are you using to program you PCB and nRF51 DK?

In addition:

• Have you installed the latest Segger drivers?
• Are you able to see your device in nRFgo Studio?

And btw, why are you using PCA10001 examples? To ensure proper functionality you should use SDK 6.1.0 or greater and SD 7.1.0 or greater.