Use Arduino Zero nodes • FIT/IoT-LAB

Contents

1 Initialize your environment
2 List available custom nodes
3 Submit an experiment on Arduino Zero nodes
4 Interact with the Arduino Zero nodes

Use Arduino Zero Nodes

Level: Easy

Duration: 20 minutes

Prerequisites: Configure SSH Access, Experiment CLI client, Node CLI client

Description: This tutorial shows how to use the Experiment CLI Tool utility from the SSH frontend to interact with the Arduino Zero nodes available on IoT-LAB. You will learn how to list available Arduino Zero nodes, start an experiment, and interact with the nodes. This tutorial uses the Arduino Zero nodes available on the Saclay site.

tuto_arduino_zero

Arduino Zero nodes consist of a board and a wireless extension shield with an XBee radio. The XBee radio is compatible with the 802.15.4 standard and can be used for IPv6 communication.

tuto_arduino_zero_xbee

The communication between the Arduino Zero and the XBee is done via the UART connected to the Arduino RX/TX pins at 9600 bauds.

Initialize your environment

Connect to the SSH frontend and get some help :

my_computer$ ssh <login>@saclay.iot-lab.info

If you have not authenticated yet using iotlab-auth, do it now:

<login>@saclay:~$ iotlab-auth -u <login>

List available custom nodes

Available Arduino Zero nodes can be listed using the iotlab-experiment command with the archi and site option

<login>@<site>:~$ iotlab-experiment info -l --archi arduino-zero --site saclay
    {
        "archi": "arduino-zero:xbee",
        "mobile": 0,
        "mobility_type": " ",
        "network_address": "arduino-zero-1.saclay.iot-lab.info",
        "site": "saclay",
        "state": "Alive",
        "uid": " ",
        "x": "1",
        "y": "53.8",
        "z": "4"
    },
[...]

Submit an experiment on Arduino Zero nodes

Now that the available Arduino Zero nodes on a site are known, one can submit an experiment on Saclay site nodes listed above, for example arduino-zero-1 to arduino-zero-2.

For this experiment, download the provided example firmware based on RIOT.

<login>@saclay:~$ wget https://raw.githubusercontent.com/wiki/iot-lab/iot-lab/firmwares/custom/arduino-zero-default.elf -P ~/.

To reserve the Arduino Zero nodes, iotlab-experiment can be invoked in 2 ways:

Using the nodes id list, here it’s arduino-zero,1-2:

<login>@saclay:~$ iotlab-experiment submit -d 60 -l saclay,arduino-zero,1-2,~/arduino-zero-default.elf
{
    "id": 53913
}

Using the nodes architecture, here it’s archi=arduino-zero:xbee:

<login>@saclay:~$ iotlab-experiment submit -d 60 -l 2,archi=arduino-zero:xbee+site=saclay,~/arduino-zero-default.elf
{
    "id": 53914
}

Now wait until the experiment is ready, e.g nodes are reserved and flashed with the given firmware.

<login>@saclay:~$ iotlab-experiment wait
Waiting that experiment 53914 gets in state Running
"Running"

Interact with the Arduino Zero nodes

Similar to the IoT-LAB M3 nodes, use nc on port 20000 to interact with any reserved node:

<login>@saclay:~$ nc arduino-zero-1.saclay.iot-lab.info 20000

and play with the RIOT shell:

> help
help
Command              Description
---------------------------------------
udp                  send data over UDP and listen on UDP ports
reboot               Reboot the node
ps                   Prints information about running threads.
ping6                Ping via ICMPv6
random_init          initializes the PRNG
random_get           returns 32 bit of pseudo randomness
nib                  Configure neighbor information base
ifconfig             Configure network interfaces
rpl                  rpl configuration tool ('rpl help' for more information)
>

You can access to the IEEE 802.15.4 interface of the board (using the XBee) via the ifconfig:

> ifconfig
ifconfig
Iface  7  HWaddr: c2:26  Channel: 26  NID: 0x23
          Long HWaddr: 00:13:a2:00:41:46:c2:26 
          MTU:1280  HL:64  RTR  
          RTR_ADV  IPHC  
          Source address length: 8
          Link type: wireless
          inet6 addr: fe80::213:a200:4146:c226  scope: local  VAL
          inet6 group: ff02::2
          inet6 group: ff02::1
          inet6 group: ff02::2401:ff46:c226
          inet6 group: ff02::1a
          
           Protocol or device doesn't provide statistics.
          Statistics for IPv6
            RX packets 36  bytes 2418
            TX packets 36 (Multicast: 3)  bytes 4178
            TX succeeded 36 errors 0
>

Using the link local address (fe80::213:a200:4146:c226), you can start an udp server on port 8888 on one of the Arduino Zero, and from the other node, send an udp packet:

> udp server start 8888 
udp server start 8888
Success: started UDP server on port 8888
>

Send the udp message from the other node:

<login>@saclay:~$ nc arduino-zero-2.saclay.iot-lab.info 20000

> udp send fe80::213:a200:4146:c226 8888 HelloWorld!
Success: sent 11 byte(s) to [fe80::213:a200:4146:c226]:8888

You should see the packet received on the first node:

PKTDUMP: data received:
~~ SNIP  0 - size:  11 byte, type: NETTYPE_UNDEF (0)
00000000  48  65  6C  6C  6F  57  6F  72  6C  64  21
~~ SNIP  1 - size:   8 byte, type: NETTYPE_UDP (4)
   src-port:  8888  dst-port:  8888
   length: 19  cksum: 0x4d58
~~ SNIP  2 - size:  40 byte, type: NETTYPE_IPV6 (2)
traffic class: 0x00 (ECN: 0x0, DSCP: 0x00)
flow label: 0x00000
length: 19  next header: 17  hop limit: 64
source address: fe80::213:a200:4146:c223
destination address: fe80::213:a200:4146:c226
~~ SNIP  3 - size:  26 byte, type: NETTYPE_NETIF (-1)
if_pid: 7  rssi: 56  lqi: 0
flags: 0x0
src_l2addr: 00:13:a2:00:41:46:c2:23
dst_l2addr: 00:13:a2:00:41:46:c2:26
~~ PKT    -  4 snips, total size:  85 byte