https://devzone.nordicsemi.com/f/nordic-q-a/6104/ble-6lowpan-environment-about-coap-exampleHello, I build a BLE 6LoWPAN environment on my raspberry pi with Kernel 3.18.3 and connect a BLE Dongle. The BLE Node is Arch BLE ( www.seeedstudio.com/.../Arch-BLE-p-1998.html) . and follow Nordic nRF51 IoT SDK. I successfully testd ipv6_icmp exampleen-USTelligent Community 13Wed, 18 Mar 2015 14:05:41 GMThttps://devzone.nordicsemi.com/thread/21369?ContentTypeID=1Wed, 18 Mar 2015 14:05:41 GMT137ad170-7792-4731-bb38-c0d22fbe4515:256732c8-8967-48d0-913f-aea4ae626822Hung Bui<p>@abc: I think this issue has nothing to do with the Raspberry PI. There must be smth went wrong with the Arch BLE.</p> <p>Have you tried to scan for advertising packet with Master Control panel (on PC or Android) or other scanning tool ?</p> <p>Could you run the device in debug mode and add a break point in app_error_handler() ?</p> <p>I suspect that there could be smth wrong with the UART lines that if you setup the app_trace_init() with HWFC set to true and if you send smth via UART you will get stuck if you don&#39;t have the UART line configured correctly and have a UART peer device to read the UART data.</p><div style="clear:both;"></div>