Programming and Debugging pins for nRF52840 custom board

[chandrakant]

Hello everyone,

I am preparing customized board using nRF52840, However, I found that SWDIO and SWDCLK are the only two pins available for programmin g and debugging purpose. If I am using Keil as IDE (version 5.6) and ST Link Debugger then suggests me some available options to design my board.

[awneil]

chandrakant said:

I found that SWDIO and SWDCLK are the only two pins available for programmin g and debugging

Correct - so use them!

But remember that you will need GND and Reset - plus a supply reference.

chandrakant said:

If I am using Keil as IDE (version 5.6) and ST Link Debugger then suggests me some available options to design my board

The same way you would use those things with any other board!

Look at how the Nordic Dev Kits do it.

Look at how the ST Dev Kits use the ST Link.

Look at how other boards on the interwebs provide a debug connection ...

[chandrakant]

Thanks for the suggestions