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raspberry_pi_openlabs_6lowpan

Raspberry Pi - 802.15.4 radio

This guide helps you to run the the openlabs 802.15.4 radio connected to spi0.0, pin 15-26. For this guide I used a Raspberry Pi 3, raspbian with kernel 4.9.34-v7+ and an openlabs 802.15.4 (at86rf233) radio. ~~TOC~~

Preparation

  • Connect the openlabs 802.15.4 radio to pin 15-26, see image above.
  • Install and configure the latest version of raspbian.
  • Edit /boot/config.txt, add the following:
    dtoverlay=at86rf233
    dtparam=spi=on
  • Reboot.
  • If everything went well, the device should be recognized:
    $ dmesg |grep spi
    [    3.504882] at86rf230 spi0.0: Detected at86rf233 chip version 1
    
    $ ip link show wpan0
    3: wpan0: <BROADCAST,NOARP> mtu 123 qdisc noop state DOWN mode DEFAULT group default qlen 300
        link/ieee802.15.4 1e:59:ad:54:xx:xx:xx:xx brd ff:ff:ff:ff:ff:ff:ff:ff
  • If you don't use the internal WiFi/Bluetooth, you can rfkill the chip:
    apt-get install rfkill
    rfkill 0
    rfkill 1
  • Or completely disable the chip, add to /boot/config.txt:
    dtoverlay=pi3-disable-wifi
    dtoverlay=pi3-disable-bt

Compile and install wpan-tools

  • Install required libnl library and wireshark:
    sudo apt-get install libnl-3-dev libnl-genl-3-dev wireshark
  • Download latest tools from http://wpan.cakelab.org/
  • Compile the wpan tools:
    tar xf http://wpan.cakelab.org/releases/wpan-tools-0.7.tar.xz
    cd wpan-tools-0.7/
    ./configure
    make
    sudo make install

WPAN ping

Ping at IEEE 802.15.4 level.

  • Set-up server:
    ip link set wpan0 down
    iwpan phy0 set channel 0 15
    iwpan dev wpan0 set pan_id 0x1111
    iwpan dev wpan0 set short_addr 0x0001
    ip link set wpan0 up
    
    wpan-ping -d 0x0002    # Listen for sort address 0x0002
  • Then ping from client:
    ip link set wpan0 down
    iwpan phy0 set channel 0 15
    iwpan dev wpan0 set pan_id 0x1111
    iwpan dev wpan0 set short_addr 0x0002
    ip link set wpan0 up
    
    $ wpan-ping -a 0x0001  -s 5 -c5
    PING 0x0001 (PAN ID 0x1111) 5 data bytes
    5 bytes from 0x0001 seq=0 time=4.9 ms
    5 bytes from 0x0001 seq=1 time=4.8 ms
    5 bytes from 0x0001 seq=2 time=5.1 ms
    5 bytes from 0x0001 seq=3 time=5.8 ms
    5 bytes from 0x0001 seq=4 time=4.7 ms
    
    --- 0x0001 ping statistics ---
    5 packets transmitted, 5 received, 0% packet loss
    rtt min/avg/max = 4.695/5.075/5.818 ms
    

6loWPAN, IPv6 over 802.15.4

  • Node 1:
    ip link set lowpan0 down
    ip link set wpan0 down
    
    iwpan dev wpan0 set pan_id 0xcafe
    iwpan phy0 set channel 0 26
    
    ip link add link wpan0 name lowpan0 type lowpan
    
    ip link set wpan0 up
    ip link set lowpan0 up
    
    ip addr add 2001:db8::1/64 dev lowpan0 
  • Node 2:
    ip link set lowpan0 down
    ip link set wpan0 down
    
    iwpan dev wpan0 set pan_id 0xcafe
    iwpan phy0 set channel 0 26
    
    ip link add link wpan0 name lowpan0 type lowpan
    
    ip link set wpan0 up
    ip link set lowpan0 up
    
    ip addr add 2001:db8::2/64 dev lowpan0
  • Ping over IPv6:
    ping6 2001:db8::1
    PING 2001:db8::1(2001:db8::1) 56 data bytes
    64 bytes from 2001:db8::1: icmp_seq=1 ttl=64 time=26.4 ms
    64 bytes from 2001:db8::1: icmp_seq=2 ttl=64 time=14.6 ms
    64 bytes from 2001:db8::1: icmp_seq=3 ttl=64 time=13.5 ms
    64 bytes from 2001:db8::1: icmp_seq=4 ttl=64 time=14.5 ms
    ^C
    --- 2001:db8::1 ping statistics ---
    4 packets transmitted, 4 received, 0% packet loss, time 3004ms
    rtt min/avg/max/mdev = 13.577/17.334/26.477/5.297 ms
    

Monitor mode, packet capture

  • Configure monitor mode (as root):
    ip link set monitor0 down
    ip link set lowpan0 down
    ip link set wpan0 down
    iwpan dev monitor0 del
    iwpan dev lowpan0 del
    
    iwpan dev wpan0 set pan_id 0x1111
    iwpan phy0 set channel 0 15
    
    iwpan phy phy0 interface add monitor0 type monitor
    
    ip link set monitor0 up
  • Capture packets with wireshark, or tshark:
    $ tshark -i monitor0
    Capturing on 'monitor0'
      1   0.000000              ->              IEEE 802.15.4 26 Reserved
      2   1.015518              ->              IEEE 802.15.4 26 Reserved
      3   2.031011              ->              IEEE 802.15.4 26 Reserved
      4   2.447961              ->              IEEE 802.15.4 27 Reserved
      5   2.808887              ->              IEEE 802.15.4 27 Reserved
      6   3.046981              ->              IEEE 802.15.4 26 Reserved
      7   5.080265       0x0100 ->              IEEE 802.15.4 26 Reserved, Src: 0x0100, Bad FCS
      8   6.091876       0x0100 ->              IEEE 802.15.4 26 Reserved, Src: 0x0100
      9   6.518924       0x3807 ->              IEEE 802.15.4 27 Reserved, Src: 0x3807
     10   6.880309       0x3807 ->              IEEE 802.15.4 27 Reserved, Src: 0x3807
     11   9.141103              ->              IEEE 802.15.4 26 Reserved[Malformed Packet]
     12  10.156867              ->              IEEE 802.15.4 26 Reserved[Malformed Packet]
     13  10.589015       0x3807 ->              IEEE 802.15.4 27 Reserved, Src: 0x3807
     14  10.949083       0x3807 ->              IEEE 802.15.4 27 Reserved, Src: 0x3807
     15  11.169899              ->              IEEE 802.15.4 26 Reserved[Malformed Packet]
     16  12.186160              ->              IEEE 802.15.4 26 Reserved[Malformed Packet]
     17  14.219155              ->              IEEE 802.15.4 26 Reserved, Bad FCS
     18  14.657224              ->              IEEE 802.15.4 27 Reserved[Malformed Packet]
     19  15.018708              ->              IEEE 802.15.4 27 Reserved[Malformed Packet]
     20  15.235625              ->              IEEE 802.15.4 26 Reserved, Bad FCS
    ^C20 packets captured
  • Remote monitoring with Wireshark over SSH:
    ssh <ip> 'dumpcap -P -i monitor0 -w -' | wireshark -k -i -

  • Examples:
    # Filter packets from specific source
    tshark -i monitor0 -V -Y "wpan.src16==0x0100"
    
    # Filter packets from specific source PAN
    tshark -i monitor0 -V -Y "wpan.src_pan==0xfcff"
    
    # CSV example
    tshark -i monitor0 -Y "wpan.src_pan==0x00b1" -Tfields -E separator=, -E quote=d -e wpan.src_pan -e wpan.src16 -e data
    
raspberry_pi_openlabs_6lowpan.txt · Last modified: 2017/06/29 13:50 by admin