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
Basically I want to connect the nrf52 chip to IPv6 network via 6LoWPAN.
I am following procedure from this link :
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::AA:BBff:feXX:YYZZ -I bt0
I can ping the device successfully.
but when I press button 1 on nrf52-dk, mosquitto shows following logs :
New connection from 2001:db8::XX:XXff:feXX:XXXX on port 8883.
New client connected from 2001:db8::XX:XXff:feXX:XXXX as nrfPublisher (c1, k60).
Sending CONNACK to nrfPublisher (0, 0)
Client nrfPublisher has exceeded timeout, disconnecting.
Socket error on client nrfPublisher, disconnecting.
and on /dev/ttyACM0 it shows following logs :
[15:53:04:334] <info> app: Physical layer in connectable mode.
[15:53:04:338] <info> app: Application started.
[15:53:32:323] <info> app: Physical layer: connected.
[15:53:32:602] <info> app: IPv6 Interface Up.
[15:56:52:128] <info> app: >> MQTT_EVT_CONNACK, result 00000000
[15:56:52:178] <info> app: >> MQTT_EVT_DISCONNECT
what could be the reason ??
Regards,
Nilesh
