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!

[Nguyen Hoan Hoang]

Keil show the SN of the link means that it is able to communicate with jlink. IDCODE not shown is because JLink can't talk to your board.

[Miroslav]

true but wrong :) Device is only not visible in keil. It is visible by jtag. I cant place picture here and that is very anoying!!! How to place picture in comment?

[wlgrd]

You placed a picture in the comment on your original thread, just use that one to add more

[Miroslav]

You can see picture in previous comment. Device is recognized in jlink software but there is nothing in keil. I use Nordic PCA10001 code examples. When I use that PCB device is easy recognized. Is it possible that because of that code my PCB cant be recognized...