Kickstart MAC OS X

Owned by Thomas Watteyne
Last updated: Nov 26, 2018 by Tengfei Chang
11 min read

If you are completely new to OpenWSN, and you are using MAC OS X, read this page first. It will walk you through all the steps to install OpenWSN and explore a number of key features.

In particular you will:

  • compile and run OpenWSN in simulation mode, ping a simulated mote, and interact with it over CoAP.
  • program a TelosBĀ mote, connect it to your computer, ping it, and interact with it over CoAP.

What to bring?

  • a computer running MAC OS X with root access. This page is written with MAC OS 10.9 Mavericks.
  • optionally, two TelosB motes to play with real hardware.

At the time of writing, we are using the latest nd greatest of all software. Undoubtedly, this will become outdated very fast. If you see something out of the date, take action! Send an e-mail to Tengfei Chang or Thomas Watteyne to get this page update. Thanks!

Download OpenWSN

OpenWSN is a collection of repositories hosted on GitHub. We will download and use the following:

We will download theseĀ repositoriesĀ side-by-side in anĀ openwsn/ directory in your desktop using Git.Ā 

~$ cd Desktop/
~/Desktop$ mkdir openwsn
~/Desktop$ cd openwsn/
~/Desktop/openwsn$ git clone https://github.com/openwsn-berkeley/openwsn-fw.git
[...]
~/Desktop/openwsn$ git clone https://github.com/openwsn-berkeley/openvisualizer.git
[...]
~/Desktop/openwsn$ git clone https://github.com/openwsn-berkeley/coap.git
[...]

At any time, you can make sure that you are using the latest code by usingĀ git pull:

~$ cd Desktop/
~/Desktop$ cd openwsn/
~/Desktop/openwsn$ cd openvisualizer/
~/Desktop/openwsn/openvisualizer$ git pull
Already up-to-date.
~/Desktop/openwsn/openvisualizer$ cd ..
~/Desktop/openwsn$ cd openwsn-fw/
~/Desktop/openwsn/openwsn-fw$ git pull
remote: Counting objects: 440, done.
remote: Compressing objects: 100% (273/273), done.
remote: Total 440 (delta 283), reused 212 (delta 128)
Receiving objects: 100% (440/440), 127.67 KiB | 99 KiB/s, done.
Resolving deltas: 100% (283/283), done.
From https://github.com/openwsn-berkeley/openwsn-fw
   87f68a6..94f18cd  develop    -> origin/develop
   116e0f4..8e36607  develop_FW-186 -> origin/develop_FW-186
Updating 87f68a6..94f18cd
Fast-forward
 firmware/openos/openwsn/03a-IPHC/iphc.c        |  792 ++++++++++++++----------
 firmware/openos/openwsn/03a-IPHC/iphc.h        |   98 +--
 firmware/openos/openwsn/03b-IPv6/forwarding.c  |  451 ++++++++------
 firmware/openos/openwsn/03b-IPv6/forwarding.h  |   28 +-
 firmware/openos/openwsn/07-App/rleds/rleds.c   |   10 +-
 firmware/openos/projects/python/SConscript.env |   12 +-
 6 files changed, 814 insertions(+), 577 deletions(-)

Running a Simulation

Frankly, it's a bit strange to start using OpenWSN with a simulation, since the firmware is really meant (and written) to run on real motes. But, not everyone has hardware, not always the same hardware, etc. So to make things nice and easy, we'll start by simulation. Oh, and the simulated code behaves exactly the same as the real code, so what you see now is what you'll get with real hardware.

Prepare

Before we can start running a simulation, we need to compile the firmware as a Python extension. This is all explained in theĀ OpenSim page if you want to know what's going on.

Oops!

The MacPorts package provides the most recent open-source releases for the gcc C compiler, for the python interpreter and related packages. For this reason, we recommend to perform the following steps:

Before you can go on, you need to install the Python header files:

  • Install Xcode, Xcode Command Line Tolls and MacPorts, according to the instructions provided at http://www.macports.org/install.php.

  • Install gcc 4.8 from MacPorts and set that version as default tool on the system:

    ~/Desktop/openwsn/openwsn-fw$ sudo port install gcc48
~/Desktop/openwsn/openwsn-fw$ sudo port select --set gcc mp-gcc48

  • Install Python 2.7 from MacPorts and set that version as default tool on the system:

    ~/Desktop/openwsn/openwsn-fw$ sudo port install python27
~/Desktop/openwsn/openwsn-fw$ sudo port select --set python python27

  • Install SCons:

    ~/Desktop/openwsn/openwsn-fw$ sudo port install scons
~/Desktop/openwsn$ cd openwsn-fw/
~/Desktop/openwsn/openwsn-fw$ scons board=python toolchain=gcc oos_openwsn
[...]
Archiving build/python_gcc/bsp/boards/python/libbsp.a
Indexing  build/python_gcc/bsp/boards/python/libbsp.a
Linking (shared)   firmware/openos/projects/common/oos_openwsn.so
scons: done building targets.

This step compile the complete OpenWSN firmware as a Python extension module (a form of shared library) which the simulation environment can import at run-time.

The extension module is atĀ ~/Desktop/openwsn/openwsn-fw/build/python_gcc/projects/common/oos_openwsn.so, no need to move it.

Simulate

You can now start a simulation. Running a simulation just means taking the usual software which runs on your computer (and call "openvisualizer"), but running it in simulation mode. That is, instead of the openvisualizer connecting to read motes, it connects to emulated mote code actually running on you machine.

Oops!

Before you can go on, you need to perform the following steps:

  • Install py-pip:

    ~/Desktop/openwsn/openvisualizer$ sudo port install py-pip
~/Desktop/openwsn/openvisualizer$ sudo port select --set pip pip27

  • Install some required Python packages through py-pip:

    ~/Desktop/openwsn/openwsn-sw/$ sudo pip install -r requirements.txt
~/Desktop/openwsn/coap/$ sudo pip install -r requirements.txt

Start a simulation:

~/Desktop/openwsn/openvisualizer$ sudo scons runweb --sim
scons: Reading SConscript files ...
 ___                 _ _ _  ___  _ _ 
| . | ___  ___ ._ _ | | | |/ __>| \ |
| | || . \/ ._>| ' || | | |\__ \|   |
`___'|  _/\___.|_|_||__/_/ <___/|_\_|
     |_|                  openwsn.org
scons: done reading SConscript files.
scons: Building targets ...
Copy("bin/sim_files", "../../../openwsn-fw/firmware/openos/bsp/boards/python/openwsnmodule_obj.h")
Mkdir("bin/sim_files/linux")
Copy("bin/sim_files/linux/oos_openwsn-x86.so", "../../../openwsn-fw/firmware/openos/projects/common/oos_openwsn.so")
Copy("bin/sim_files", "../../../openwsn-fw/firmware/openos/projects/common/oos_openwsn.so")
Delete("build/runui/web_files")
Mkdir("/home/thomas/Desktop/openwsn/openvisualizer/build/runui")
Copy("build/runui/web_files", "bin/web_files")
Delete("build/runui/sim_files")
Mkdir("/home/thomas/Desktop/openwsn/openvisualizer/build/runui")
Copy("build/runui/sim_files", "bin/openVisualizerApp/sim_files")
uiRunner(["bin/openVisualizerWeb"], ["bin/openVisualizerWeb.py"])
Child PID is 5144
scons: done building targets.
thomas@Thomas-X61s:~/Desktop/openwsn/openvisualizer$ ioctl(TUNSETIFF): Device or resource busy
created following virtual interface:
4: tun0: <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UNKNOWN qlen 500
    link/none 
    inet6 bbbb::1/64 scope global 
       valid_lft forever preferred_lft forever
    inet6 fe80::1/64 scope link 
       valid_lft forever preferred_lft forever

You need to run the openvisualizer with "sudo" since the Python program will create a tun interface.

That's it, an OpenWSN simulation is now running your computer!

OpenĀ http://127.0.0.1:8080/Ā to see the web interface of OpenWSN

Open the "Topology" tab:

  • left click on a mote to move it around
  • right-click on two motes to connect them with a wireless link
  • left-click on a link to change its PDR (packet delivery ratio)

Set up the topology to have a chain 1-2-3, and set each PDR to 1.

Back in the "Motes" tab, select moteĀ 0001 and click on the "Toggle" button. You just declare mote 1 to be the root of your network (the DAGroot in RPL parlance, the sink in WSN parlance, the gateway, etc). You can select other motes and see that they quickly become "Synchronized!".


Congratulations, you have built your first OpenWSN simulated network!

Ping a mote

By convention (i.e. this is hard-coded in the software), the IPv6 prefix of the simulated network isĀ bbbb:/64. This means that the IPv6 address of each mote will start with "bbbb::". The remainder of a mote's IPv6 address is it's MAC address (or EUI-64). You can read this in the web interface (under "EUI-64").

Open a new terminal to ping mote 2:

~/Desktop/openwsn/openvisualizer$ ping6 bbbb::1415:92cc:0:2
PING bbbb::1415:92cc:0:2(bbbb::1415:92cc:0:2) 56 data bytes
64 bytes from bbbb::1415:92cc:0:2: icmp_seq=1 ttl=64 time=51.1 ms
64 bytes from bbbb::1415:92cc:0:2: icmp_seq=2 ttl=64 time=134 ms
64 bytes from bbbb::1415:92cc:0:2: icmp_seq=3 ttl=64 time=137 ms
64 bytes from bbbb::1415:92cc:0:2: icmp_seq=4 ttl=64 time=101 ms
^C
--- bbbb::1415:92cc:0:2 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3004ms
rtt min/avg/max/mdev = 51.172/106.146/137.486/34.713 ms

You can also ping mote 3 which is 3 hops away:

~/Desktop/openwsn/openvisualizer$ ping6 -s 10 bbbb::1415:92cc:0:3
PING bbbb::1415:92cc:0:3(bbbb::1415:92cc:0:3) 10 data bytes
18 bytes from bbbb::1415:92cc:0:3: icmp_seq=1 ttl=63 time=80.1 ms
18 bytes from bbbb::1415:92cc:0:3: icmp_seq=2 ttl=63 time=105 ms
18 bytes from bbbb::1415:92cc:0:3: icmp_seq=3 ttl=63 time=94.0 ms
18 bytes from bbbb::1415:92cc:0:3: icmp_seq=4 ttl=63 time=147 ms
^C
--- bbbb::1415:92cc:0:3 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3001ms
rtt min/avg/max/mdev = 80.115/106.887/147.964/25.359 ms

We had to reduce size of the ping request for that one (-s 10). The reason is that the packet contains also a source routing header, leaving less bytes for payload.

Interact over CoAP

CoAP is a protocol implement on each OpenWSN device, which makes it appear like a web server on the Internet.

By default, an OpenWSN mote implements a CoAP "info" resource which indicate what version of the code is running.Ā You can test that by running the Python test script provided in the firmware:

~/Desktop/openwsn/openwsn-fw/openapps/cinfo$ python cinfo.py 
/home/thomas/Desktop/openwsn/openwsn-fw/openapps/cinfo
OpenWSN 1.4.1
Python
Python
Python

Debugging with Wireshark

In simulation mode, the openvisualizer takes care of simulating the wireless medium. You can use Wireshark to take a peek at what goes over this simulated radio space.

Oops!

Before you can go on, you need to install Wireshark:

sudo port install wireshark

Start Wireshark on theĀ tun interface at addressĀ bbbb::1, and configure the filtering forĀ zep (the ZigBee encapsulation protocol).

You need to start Wireshark with "sudo":

sudo wireshark

For now, you don't see any packets, that's normal:

In the OpenVisualizer's "Event bus" tab, check the "Wireshark debug" box.

You now see all the packets exchanged over the simulated radio environment, exciting!


Here is an example pcap file of openwsn simulation network with three motes:Ā example.

Closing the OpenVisualizer

Now theĀ embarrassingĀ part. We haven't taken the time to implement a graceful way of stopping the openvisualizer, so you'll have to kill the process. Sorry.

~/Desktop$ ps -ef | grep openvisualizer
root      5354     1 99 00:28 pts/0    00:36:58 python bin/openVisualizerApp/openVisualizerWeb.py -a /home/thomas/Desktop/openwsn/openwsn-sw/software/openvisualizer/build/runui -s -H 0.0.0.0 -p 8080
thomas    7321  5487  0 01:04 pts/2    00:00:00 grep --color=auto openvisualizer
~/Desktop$ sudo kill -9 5354

Now with real hardware

User experience with real hardware is identical than when using the simulator. Because it is a popular platform, we will use the TelosB mote, although any other supported hardware platform can be used instead.

Connecting the boards

When connecting a TelosB board, you Linux will assign it a device file. Reading/writing to/from that file results in bytes being sent to/from your TelosB over its UART interface. To know which device your TelosB is located at, plug it into your computer, wait a second, and typeĀ dmesg:

[ 1181.904524] usb 1-3.3.2: new full-speed USB device number 5 using ehci_hcd
[ 1182.002641] usb 1-3.3.2: New USB device found, idVendor=0403, idProduct=6001
[ 1182.002651] usb 1-3.3.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 1182.002659] usb 1-3.3.2: Product: Crossbow Telos Rev.B
[ 1182.002667] usb 1-3.3.2: Manufacturer: XBOW
[ 1182.002674] usb 1-3.3.2: SerialNumber: XBRAHL2O
[ 1182.035737] usbcore: registered new interface driver usbserial
[ 1182.035784] usbcore: registered new interface driver usbserial_generic
[ 1182.035819] USB Serial support registered for generic
[ 1182.035835] usbserial: USB Serial Driver core
[ 1182.041321] usbcore: registered new interface driver ftdi_sio
[ 1182.041363] USB Serial support registered for FTDI USB Serial Device
[ 1182.041627] ftdi_sio 1-3.3.2:1.0: FTDI USB Serial Device converter detected
[ 1182.041785] usb 1-3.3.2: Detected FT232BM
[ 1182.041793] usb 1-3.3.2: Number of endpoints 2
[ 1182.041801] usb 1-3.3.2: Endpoint 1 MaxPacketSize 64
[ 1182.041809] usb 1-3.3.2: Endpoint 2 MaxPacketSize 64
[ 1182.041815] usb 1-3.3.2: Setting MaxPacketSize 64
[ 1182.043704] usb 1-3.3.2: FTDI USB Serial Device converter now attached to ttyUSB0
[ 1182.043742] ftdi_sio: v1.6.0:USB FTDI Serial Converters Driver

The penultimate line indicates that this TelosB is attached toĀ /dev/ttyUSB0. You can repeat the same procedure for the other boards. In my case, I have 3 motes connected:

thomas@Thomas-X61s:~/Desktop/openwsn/openwsn-fw$ ls /dev/ttyU*
/dev/ttyUSB0  /dev/ttyUSB1  /dev/ttyUSB2

Compiling/Loading firmware

Wait!

Before going on, you need to make sure you have a recent version mspgcc:

thomas@Thomas-X61s:~$ msp430-gcc --version
msp430-gcc (GCC) 4.6.3 20120301 (mspgcc LTS 20120406 unpatched)
Copyright (C) 2011 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

In particular, earlier versions Ubuntu (e.g. 12.04 LTS) came with the older msp430-gcc 4.5.3. This will NOT work; see FW-209 - Getting issue details... STATUS for details.


The build environment allow you to build the firmware and load is on all your boards with a single command (how cool is that?):

thomas@Thomas-X61s:~/Desktop/openwsn/openwsn-fw$ sudo scons board=telosb toolchain=mspgcc bootload=/dev/ttyUSB2 oos_openwsn
scons: Reading SConscript files ...
 ___                 _ _ _  ___  _ _ 
| . | ___  ___ ._ _ | | | |/ __>| \ |
| | || . \/ ._>| ' || | | |\__ \|   |
`___'|  _/\___.|_|_||__/_/ <___/|_\_|
     |_|                  openwsn.org
scons: done reading SConscript files.
scons: Building targets ...
msp430-size firmware/openos/projects/common/03oos_openwsn_prog
   text	   data	    bss	    dec	    hex	filename
  41024	      0	   4138	  45162	   b06a	firmware/openos/projects/common/03oos_openwsn_prog
telosb_bootload(["firmware/openos/projects/common/03oos_openwsn_prog.phonyupload"], ["firmware/openos/projects/common/03oos_openwsn_prog.ihex"])
starting bootloading on /dev/ttyUSB2
MSP430 Bootstrap Loader Version: 1.39-telos-8
Mass Erase...
Transmit default password ...
Invoking BSL...
Transmit default password ...
Current bootstrap loader version: 1.61 (Device ID: f16c)
Changing baudrate to 38400 ...
Program ...
41024 bytes programmed.
Reset device ...
done bootloading on /dev/ttyUSB2
scons: done building targets.

Programming multiple motes?

While the command allows you to program multiple motes in one go:

sudo scons board=telosb toolchain=mspgcc bootload=/dev/ttyUSB0,/dev/ttyUSB1,/dev/ttyUSB2 oos_openwsn

Linux seems to have synchronization errors when doing so. See SW-136 - Getting issue details... STATUS .

Start a network

Once the motes are programmed, you have the exact same experience as when running a simulated network.

First, start the OpenVisualizer:

thomas@Thomas-X61s:~/Desktop/openwsn/openvisualizer$ sudo scons runweb
scons: Reading SConscript files ...
 ___                 _ _ _  ___  _ _ 
| . | ___  ___ ._ _ | | | |/ __>| \ |
| | || . \/ ._>| ' || | | |\__ \|   |
`___'|  _/\___.|_|_||__/_/ <___/|_\_|
     |_|                  openwsn.org
scons: done reading SConscript files.
scons: Building targets ...
Delete("build/runui/web_files")
Mkdir("/home/thomas/Desktop/openwsn/openvisualizer/build/runui")
Copy("build/runui/web_files", "bin/web_files")
Delete("build/runui/sim_files")
Mkdir("/home/thomas/Desktop/openwsn/openvisualizer/build/runui")
Copy("build/runui/sim_files", "bin/sim_files")
uiRunner(["bin/openVisualizerWeb"], ["bin/openVisualizerWeb.py"])
Child PID is 2820
scons: done building targets.
thomas@Thomas-X61s:~/Desktop/openwsn/openvisualizer$ ioctl(TUNSETIFF): Device or resource busy
created following virtual interface:
4: tun0: <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UNKNOWN qlen 500
    link/none 
    inet6 bbbb::1/64 scope global 
       valid_lft forever preferred_lft forever
    inet6 fe80::1/64 scope link 
       valid_lft forever preferred_lft forever

OpenĀ http://127.0.0.1:8080/Ā to see the web interface:

Your TelosB motes turn on their blue LED once synchronized.


Can I see the topology?

You might be tempted to look for a graphical representation of the topology. Unfortunately, this is only implemented in simulation mode. Really want it? Help fix SW-137 - Getting issue details... STATUS .

Ping a mote

You can ping a mote exactly as you would in the simulator:

thomas@Thomas-X61s:~$ ping6 bbbb::1415:9200:12:e63b
PING bbbb::1415:9200:12:e63b(bbbb::1415:9200:12:e63b) 56 data bytes
64 bytes from bbbb::1415:9200:12:e63b: icmp_seq=1 ttl=64 time=365 ms
64 bytes from bbbb::1415:9200:12:e63b: icmp_seq=2 ttl=64 time=354 ms
64 bytes from bbbb::1415:9200:12:e63b: icmp_seq=3 ttl=64 time=344 ms
64 bytes from bbbb::1415:9200:12:e63b: icmp_seq=4 ttl=64 time=340 ms
64 bytes from bbbb::1415:9200:12:e63b: icmp_seq=5 ttl=64 time=332 ms
^C
--- bbbb::1415:9200:12:e63b ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4006ms
rtt min/avg/max/mdev = 332.908/347.599/365.737/11.417 ms

Interaction over CoAP

You can interact with a mote exactly as you would in the simulator. After modifying the cinfo.py script to communicate with moteĀ bbbb::1415:9200:12:e63b:

thomas@Thomas-X61s:~/Desktop/openwsn/openwsn-fw/openapps/cinfo$ python cinfo.py 
/home/thomas/Desktop/openwsn/openwsn-fw/openapps/cinfo
OpenWSN 1.4.1
TelosB
MSP430f1611
CC2420
Done. Press enter to close.

What's next?

Congratulations! You've now gone through the trouble of installing all of the tools and pieces of OpenWSN. From now on, it's just fun.