MQTT Publisher problem :Ping6 response failed while trying to ping the nrf52DK from Raspberry Pi 3B.

[nileshwaghmare3081]

Hello,

I have a problem with MQTT Publisher example on my nrf52832 DK.

1. I am using ubuntu & nordic's SDK15.2.0 for this mqtt example. On raspberry pi 3b I have installed Raspbian stretch lite.

2. I am able to connect device using :

echo "connect XX:XX:XX:XX:XX:XX 1" > /sys/kernel/debug/bluetooth/6lowpan_contol

3.I am following this links  MQTT Client - Publisher and IoT SDK RPi3 - with bluetooth_6lowpan.

What went wrong, am I missing something ?

Thanks.

[Jørgen Holmefjord]

Hi,

I'm not sure I understand what your problem is. Can you please post the commands you are using and the response you get from each command?

Best regards,
Jørgen

[nileshwaghmare3081]

Hi Jorgen,

Basically I want to connect the nrf52 chip to IPv6 network via 6LoWPAN.

I am following procedure from this link :

https://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.sdk5.v15.2.0%2Fiot_sdk_user_guides_mosquitto.html

I am able to execute commands until step 8; after that I wanted to ping nrf52dk using from raspberry.

I have scanned and connected ble device using following command successfully :

$hcitool lescan

$echo "connect <mac address from hcitool output> 1" > /sys/kernel/debug/bluetooth/6lowpan_control

root@raspberrypi:/home/pi# ifconfig bt0
bt0: flags=4161<UP,RUNNING,MULTICAST>  mtu 1280
        inet6 fe80::b827:ebff:fe38:5ac0  prefixlen 64  scopeid 0x20<link>
        unspec B8-27-EB-38-5A-C0-00-00-00-00-00-00-00-00-00-00  txqueuelen 1000  (UNSPEC)
        RX packets 1  bytes 28 (28.0 B)
        RX errors 0  dropped 2  overruns 0  frame 0
        TX packets 24  bytes 2123 (2.0 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

then i derived link-local IPv6 address of the nRF52 device from its MAC address:

ping6 fe80::2AA:BBff:feXX:YYZZ -I bt0

when tried to ping I got following error :Destination unreachable: Address unreachable

Thanks.