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Trill777

Beginner

Date of registration: Dec 22nd 2017

Posts: 2

1

Friday, December 22nd 2017, 4:42pm

Not able to connect/recognize J-Link OB via USB

Hello

OS: Windows 10
Eval Board: PAN1760A USB
MCU: Atmel ATSAM3U2C
Segger: J-Link OB
J-Link: V616h

J-Link CDC UART is no longer showing up as a COM port and I'm not able to identify it with J-Link or J-LinkConfig (via USB). It was previously recognizable.
I've tried uninstalling and reinstalling the J-Link but to no Avail.

Any ideas?

Thank you
Troy

SEGGER - Nino

Super Moderator

Date of registration: Jan 2nd 2017

Posts: 566

2

Thursday, January 4th 2018, 12:01pm

Hello Troy,

Thank you for your inquiry.
Such a behaviour is not known to us.

What exactly was the working setup? Which J-Link software version did you use then?
Could you use the latest J-Link software versions V6.22d and see if this resolves the issue?
We tried to reproduce the issue with the eval boards we received form Panasonic and everything was working as expected.

Best regards,
Nino

Trill777

Beginner

Date of registration: Dec 22nd 2017

Posts: 2

3

Thursday, January 4th 2018, 7:24pm

Hi Nino

The Panasonic kit comes with two USB eval boards.

Quoted

What exactly was the working setup? Which J-Link software version did you use then?
I was running/using V616h on both boards.
One of the boards is still functional and the JLink is recognized on a COM port. On this board LED 2 (Red) is illuminated. There is also a separate COM port for the USB Serial (that works).
On the other board, the one where the JLink is not recognized, LED 2 (Red) is not illuminated. The separate COM port for the USB Serial does still work though.

Quoted


Could you use the latest J-Link software versions V6.22d and see if this resolves the issue?
I tried using V6.22d and unfortunately this did not resolve the issue.

Is it possible that I somehow damaged the JLink on the one board?

Thank you
Troy

SEGGER - Nino

Super Moderator

Date of registration: Jan 2nd 2017

Posts: 566

4

Friday, January 5th 2018, 9:12am

Hello Troy,

We just checked and also got 2 boards for testing from Panasonic.
Similar to your description one of the boards works perfectly fine, the other one does not connect successfully to the host PC (red LED keeps blinking in our case).
So it seems that the FW on the second J-Link OB is faulty.
Unfortunately we do not have any documentation about that board so we can't give further support in that matter.
Please contact Panasonic and ask for a replacement unit for the not functioning J-Link OB.

One thing you could try is to test the "broken" eval board on another PC without additional USB-Hubs in between.
Does that change the behaviour of the board?

Best regards,
Nino