Debug cables for Thingy 53 using J-link and/or 52840DK

[Smeedy]

Hi there,

Making a switch into 53 and order a couple of Thingies. Some questions on debug and probing.

1. There's a 10-pin small-pitch port on the front right of the device. Can anyone suggest cables I need to get to do SWD/RTT flashing/debugging? I have a Segger J-Link but also a 52840/33DK lying around which I can use? Documentation could use a hint here what to purchase.
   
   
2. The PCA64142 current measurement & debug board is a bit mystical. Searching for it will show the older model but nothing specific. Since there's also a port there with 20-pins and a key. This is probably something I can use for debug, but again which cable do I need and how to connect it?

Thank you for time,
regards,
Martijn 

[Amanda Hsieh]

Hi, 

1.  You can use a 10-pin JTAG cable. If you program applications with an external debug probe, you can use the nRF5340 DK or any J-Link device supporting Arm Cortex-M33 as the external debug probe.

2. The current measurement and debug board simplify the current consumption measurement of the four different power domains with a power profiling tool, such as the Power Profiler Kit II. The interface also enables a trace debugging functionality and the possibility to connect external circuits or boards to the Nordic Thingy:53 by using the TRACE pins as regular GPIOs. See Current measurement and debug interface.

Regards,
Amanda H.

[Smeedy]

Hi Amanda, thank you for your reply!

The 10-pin JTAG cables I have in the in the box have a way bigger pitch and connector size - these are probably the old-world connectors. Do you know the connector name with the smaller form factor? 

Same story probably on the connector on the debug board (thank you for the link so I have the pinout). Any reference to that connector so I can find a cable? Just a name or a part number would help to some purchase going.

[Frans Lutz]

You need something like this: 
https://www.amazon.nl/10-Pin-Pitch-Socket-Extension-Ribbon/dp/B09T5YBJSJ

Note what Amanda mentioned above you can't use the nRF52840DK, you need the nRF5340DK or a J-LINK supporting M33 core.