Problems connecting to nRF52810

[mizz]

Hello there

I am trying to program the BL651 wich makes use of nRF52810 chip, however i haven't been able to program it.

The tool im using for the task is the J-Link Debug Probes. In the Schematic below i show my connection setup.

I have tried direct connection using the Jlink commander tool with the following results

And also i have tried to stablish a connection using the Segger IDE

Something that caught my attention is that i tried to make a connection with the JLinkRTTViewer tool and it appears that it succesfully connected

I hope someone can help me to solve this issue.

[awneil]

Are you assuming that pin 1 of the J-Link provides power to the target?

That's not (usually) the case - the J-Link uses it to sense the voltage from the target ...

https://www.segger.com/products/debug-probes/j-link/technology/interface-description/

[mizz]

Of course not, i have an external power source which gives me the 3.3V i need

[awneil]

I don't about "of course";  it's quite a common misunderstanding, and the diagram isn't entirely clear - especially given the direction of the arrow on pin 1.

So just checking to be sure.

[mizz]

Sorry, i forgot to draw the power source, but im sure it is working propertly