Cannot connect to my device

RE: Cannot connect to my device

margarida — Thu, 13 May 2021 15:45:45 GMT

Did you solve this in the end? I am having the same issue.

RE: Cannot connect to my device

Håkon Alseth — Thu, 30 Jul 2020 07:18:14 GMT

Hi,

Thank you for the log files, and my apologies for the late response.

It looks like it is not able to successfully detect the nRF, as it fails on the very first SWD-DP transfer. Have you checked the output when connecting with JLink Commander?

Have you checked that the connection to SWDIO and SWDCLK is correct (not mirror-connected or similar) ?

Are you able to successfully connect to other devices, or is this issue only present on one device?

Kind regards,

Håkon

RE: Cannot connect to my device

Keludso — Mon, 13 Jul 2020 12:41:54 GMT

Hi,

Thank you for the reply. I purchased a Jlink edu with a VTREF of 1.8. Now I get the following error when i run

devzone.nordicsemi.com/.../40523.log.lognrfjprog --recover --log

RE: Cannot connect to my device

Håkon Alseth — Mon, 08 Jun 2020 14:10:13 GMT

Hi,

From this page, it seems that your debugger probe only works on 3.3V:

https://www.segger.com/products/debug-probes/j-link/models/j-link-edu-mini/

Do you have the possibility to raise the voltage on your target board?

Kind regards,

Håkon