JLinkExe: cannot connect to target

RE: JLinkExe: cannot connect to target

ioannis — Tue, 19 Mar 2019 16:46:54 GMT

I checked 3 times - or so I thought

Thank you a lot!

RE: JLinkExe: cannot connect to target

Stian Røed Hafskjold — Tue, 19 Mar 2019 09:17:08 GMT

Looking at your schematic one more time, it seems like you have switched SWDCLK and SWDIO.

https://www.segger.com/products/debug-probes/j-link/accessories/adapters/6-pin-needle-adapter/

RE: JLinkExe: cannot connect to target

ioannis — Thu, 14 Mar 2019 15:03:16 GMT

Yes of course, but nrfjprog uses J-Link.

So no go there as well.

RE: JLinkExe: cannot connect to target

Stian Røed Hafskjold — Thu, 14 Mar 2019 15:00:41 GMT

I'm not really sure what's wrong here. Schematic and layout look fine. The DEC voltages are fine. The current consumption corresponds to a chip with empty flash (hard fault), which is fine.

Have you tried nrfjprog --recover? nrfjprog is part of the command line tools found here: https://www.nordicsemi.com/Software-and-Tools/Development-Tools/nRF5-Command-Line-Tools

RE: JLinkExe: cannot connect to target

ioannis — Thu, 14 Mar 2019 13:48:28 GMT

Most footprints are 0402 instead of 0201.

RE: JLinkExe: cannot connect to target

Stian Røed Hafskjold — Thu, 14 Mar 2019 12:27:48 GMT

Hi, can you please post schematics and layout for review. Thanks