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IoT Hands-on

Virtual network interface on native

  • Use tapsetup script in RIOT repository:
./../RIOT/dist/tools/tapsetup/tapsetup -c 2

task-05

./../RIOT/dist/tools/tapsetup/tapsetup -c 2

task-06

Establish UDP connection

we use gnrc socket implementation using other modules.

From terminal to send messages on udp riot Server.

echo "Hello" |nc -6u fe80::1828:9fff:fec7:18de%tapbr0 8000

Then we send from riot to external Linux application.

Does not work the last part of the tutorial. Sometimes does not work the binding port.

/media/frank/Dati/university/iot/hands-on/Tutorials/task-06/bin/native/Task06.elf tap0 
RIOT native interrupts/signals initialized.
LED_RED_OFF
LED_GREEN_ON
RIOT native board initialized.
RIOT native hardware initialization complete.

/media/frank/Dati/university/iot/hands-on/Tutorials/task-06/bin/native/Task06.elf: ioctl TUNSETIFF: Device or resource busy
/media/frank/Dati/university/iot/hands-on/Tutorials/task-06/bin/native/Task06.elf: probably the tap interface (tap0) does not exist or is already in use
/media/frank/Dati/university/iot/hands-on/Tutorials/task-06/../RIOT/Makefile.include:547: recipe for target 'term' failed
make: [term] Error 1

MQTT - SN

https://github.com/RIOT-OS/RIOT/tree/master/examples/emcute_mqttsn

  1. The CONNECT message is split into 3 messages. The 2 additional ones are optional and used to transfer Will topic

When you have to integrate MQTT-SN to MQTT you need a connection between the 2 gateway. You can have transparent or aggregating gateway.

13 IoT-LAB

  1. Register to IoT-Lab
  2. Configure SSH Access link. Just create a pair key and copy your public key into your IoT-lab profile.
  3. Follow this tutorial

My SSH credential is:

ssh [email protected]

To build: (into your SSH remote connection, after have configured as (3))

source /opt/riot.source
BOARD=iotlab-m3 make all

14 IoT-LAB Networking example for M3 Nodes

  1. Connect to SSH
  2. Compible the firmware in remote (in your SSH connection)
  3. Copy the remote elf into your local pc.
scp [email protected]:iot-lab/parts/RIOT/examples/gnrc_networking/bin/iotlab-m3/gnrc_networking.elf gnrc_networking.elf

15

  1. MQTT-SN Gateway: Install MQTT-SN gateway If you have this error:
src/linux/Network.h:24:10: fatal error: openssl/ssl.h: No such file or directory
 #include <openssl/ssl.h>
          ^~~~~~~~~~~~~~~
compilation terminated.

install:

sudo apt-get install libssl-dev

To run:

cd /media/frank/Dati/university/iot/hands-on/MQTTSNGateway
sudo ./MQTT-SNGateway

N.B: I have cloned this repo 2 times: (master and develop) but I'm using develop (because experiment does not work).

Create your RIOT project: *in my case I have just copied emcute_mqttsn in my folder myTest and changed the RIOT base folder on Makefile.

Now, you have to setup gateway.conf into MQTTSNGateway.

sudo ip a a fec0:affe::1/64 dev tapbr0

Check CONNECTION:

sudo netstat -ltup

Iot-Lab Networking

BORDER ROUTER:

iotlab-node --update examples/gnrc_border_router/bin/iotlab-m3/gnrc_border_router.elf -l saclay,m3,106
sudo ethos_uhcpd.py m3-106 tap0 2001:660:5307:316a::1/64
cd ~/A8/riot/RIOT/examples/my_firmware/bin/iotlab-m3
iotlab-node --update emcute_mqttsn.elf -l grenoble,m3,105