SODAQ ONE Debugging Possibilities

I see RESET, SWCLK and SWDIO pins available. Does that mean that we can add an Segger J-Link EDU module to start debugging Arduino software as described on Adafruit?

Yes, the SAMD based board (SodaqONE, Autonomo) support Serial Wire Debug (SWD) using those pins.

I’m not sure if the Arduino IDE has much support for debugging, but other IDEs will.

Today I set up AtmelStudio 7 (version: 7.0.1188) and followed the Adafruit guide (post above) and connected the Atmel ICE Debugger. Set it up with SAM port pin according the debugger manual “Connecting to a SWD Target”. I’m happy to say that it all works fine.