I managed to build Segger RTT (to redirect printf on Segger JLink terminal) within my code baseline to try to use the inner terminal of SmartSnippets. When I the flash the image with Segger RTT support and start with JLink connected, I should be able to start a Telnet terminal.
But I get this error message for Telnet : connection refused : connect
I used localhost with port 19021 as described in the documentation..
Is this fully functionnal ? Could this come from something like a firewall?