nRF52 DK is not getting connected to programmer software.

[Yogesh Sarode]

I have installed nRF connect for desktop .In which I am trying to connect nRF 52 DK through programmer software. As soon as I connect the development kit via USB to type B cable to laptop, it shows J link. But it does not show nRF52DK. and programmer software shows unsupported device. How could  I resolve the issue.

[Yogesh Sarode]

Hello,

There are no other J-link drivers except J-link V7666a(32 bit windows).

Devkit was not connected before,I am first time trying to connect it.

No modifications done to devkit,

[Jared]

Hi,

Are you able to list the device if you use nRF Command Line Tools and the command:

nrfjprog --ids

regards
Jared

[Elfving]

Then it seems to me as if things are functioning the way they should. The only "problem" is that device readback protection is being enabled after flashing, which is the default behavior now. 

Is what you are flashing to the device functioning as you would expect it to?

Regards,

Elfving

[Yogesh Sarode]

One thing here I would like to mention that if we open the pins VDD amd VTG then device list shows nRF52DK and if we short it as shown in above figure then device list shows JLINK. Is that means there is something wrong with DK? 

[Elfving]

Hmm I wouldn't necessarily say so. What DK version are you using? Is the flashing working?

Are you programming it using SWD?

Regards,

Elfving

[Yogesh Sarode]

Find the attached photograph of the DK. We are using PCA10040  3.0.0 version. Flashing to the Minew chip is not working. I strongly think that there may be something wrong with the DK. We are trying to program the Minew chip using tag connect cable as it was not working so we used the connections from P20 as suggested by you.

[Elfving]

How are you seeing it not working? Have you shorted anything on the DK previously?

Does flashing the SoC on the DK itself work?

You could for instance try this hex file right here, which should make LED1 blink.zephyr_blinky.hex

What SoC is on the Minew chip?

Regards,

Elfving

[Yogesh Sarode]

Yes the flashing the SoC on the DK is working.I tried the hex file and LED1 is blinking.

Also the thing I observed that LED2 is contineously glowing but with very low intensity (Dimmed).

[Elfving]

I see, that is a bit odd but I don't think that is necessarily any symptom of an issue on the DK. 

Elfving said:

What SoC is on the Minew chip?

Elfving said:

How are you seeing it not working? Have you shorted anything on the DK previously?

Could you answer these questions?

Regards,

Elfving

[Yogesh Sarode]

We are using MS50SFA-1Y10AIR Minew chip.

We have not shorted anything on DK. 

We are seeing it as not working because as soon as we connect the tag connect cable to Debug out connector of DK.The programmer device list shows JLINK and if we disconnect tag connect cable from debug out connector,programmer device list shows nRF52DK.

We have also tried the connections suggested by you on P20. but here also if we short VDD and VTG,Programmer device list shows JLINK and if we open the VDD and VTG programmer device list shows nRF52DK.

[Elfving]

Yogesh Sarode said:

We are seeing it as not working because as soon as we connect the tag connect cable to Debug out connector of DK.The programmer device list shows JLINK and if we disconnect tag connect cable from debug out connector,programmer device list shows nRF52DK.

It might be your JLink version or the version of nRF Connect for Desktop that is different from what I have on my end, but it isn't necessarily more odd than that. It would make sense to distinguish between programming the SoC on the DK and programming the Minew chip using the DK, and the connection showing up as JLink sounds like a good way of doing so. We could look through the release notes of the versions you have of JLink and nRF Connect for Desktop, though lets see if its even a problem first:

Could you try flashing something to the Minew chip?

Regards,

Elfving

[Yogesh Sarode]

Yes,I already tried to flash the Minew chip but it shows device is protected.