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192 lines
6.5 KiB
Markdown
192 lines
6.5 KiB
Markdown
Contiki RPL Quickstart using Econotags
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======================================
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Contiki RPL implements the IETF ROLL working group's RPL: IPv6 Routing
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Protocol for Low power and Lossy Networks. This routing standard
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enables you to set up a route-over 6LowPAN network.
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This tutorial will show you how to run Contiki's RPL demos on Redwire
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Econotags.
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1) Obtain Redwire Econotags, or other mc1322x hardware.
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---------------------------------------------------------------
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See [the mc1322x hardware](http://mc1322x.devl.org/hardware.html) for
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an incomplete, but growing list of mc1322x hardware.
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We recommend a few [Econotags](http://www.redwirellc.com/store/node/1)
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to get started. In addition to the mc13224v, the Econotag also has the
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FT2232H USB dual port controller. One port is connected to UART1 and
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all the necessary pins to load, erase, and reset the mc13224v. The
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other port is connected to the JTAG pins for run-time debugging. **No
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other programming hardware is necessary. Just your computer!**
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2) Get a toolchain, and Contiki source.
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----------------------------------------
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Everything you need is in [Instant Contiki
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2.5](http://www.sics.se/contiki/news/contiki-2.5-release-candidate-1-avaliable.html). If
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you are going to be working primarily with Contiki then this is the
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way to go.
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Instant Contiki contains the
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[mc1322x-oe](http://git.devl.org/?p=malvira/mc1322x-oe.git;a=summary)
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[[ubuntu]](http://mc1322x.devl.org/ubuntu.html)
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[[mac]](http://mc1322x.devl.org/mac.html) toolchain.
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Development of the mc1322x port occurs in a different branch from the
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main Contiki CVS repository. The most current mc1322x contiki port can be found here:
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[contik-mc1322x.git](http://git.devl.org/?p=malvira/contiki-mc1322x.git)
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3) Build the border-router and rpl-udp
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---------------------------------------
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The RPL demo consists of a "Border router" and at least one other RPL
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enabled node. For this tutorial, the border router creates a RPL DAG
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and is the ROOT. The other node will be a RPL udp-client. It joins the
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RPL network, acts as an RPL router, and sends a UDP datagram to a
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hardcoded IPV6 address. This tutorial only handles a two node network,
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but can be extended for any number of nodes.
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The general command to make a Contiki binary for the Econotag is:
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make TARGET=redbee-econotag
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To build the border-router:
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cd contiki-2.x/examples/ipv6/rpl-border-router
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make TARGET=redbee-econotag
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This will produce the binary image
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'border-router_redbee-econotag.bin', which you can load directly on to
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an mc1322x and execute.
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To build the udp-client, do:
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cd contiki-2.x/examples/ipv6/udp-client
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make TARGET=redbee-econotag
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which will build 'udp-client_redbee-econotag.bin'.
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4) Load the binaries on the Econotags:
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-------------------------------------------
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### a) Run the econotags with randomized MAC addresses (random, but persistent)
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After building border-router_redbee-econotag.bin, you load the code
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with:
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mc1322x-load.pl -f border-router_redbee-econotag.bin -t /dev/ttyUSB1 -c 'bbmc -l redbee-econotag reset'
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The econotag will flash itself with a random Redwire MAC address if
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you haven't programmed one in:
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address in flash blank, setting to defined IAB with a random extention.
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flashing blank address
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Rime started with address 00:50:C2:FF:FE:A8:C2:66
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CSMA sicslowmac, channel check rate 100 Hz, radio channel 26
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Tentative link-local IPv6 address
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fe80:0000:0000:0000:0250:c2ff:fea8:c266
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Tentative global IPv6 address aaaa:0000:0000:0000:0250:c2ff:fea8:c266
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This mac address is used to derive its IPv6 address. In this example,
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it's aaaa::0250:c2ff:fea8:c266.
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The border router connects to your computer over a SLIP tunnel formed
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by `tunslip6` --- a tool included in Contiki.
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To make tunslip6:
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cd contiki-2.x/tools
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make tunslip6
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You need to run tunslip6 to create this tunnel and SLIP connection:
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tunslip6 -s /dev/ttyUSB1 aaaa::1/64
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### b) Program the MAC addresses on the Econotag
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To erase the econotag (and the MAC address), first make sure you've
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built BBMC:
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cd contiki-2.x/cpu/mc1322x/tool/ftditools
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make
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If you have trouble, see the [BBMC
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page](http://mc1322x.devl.org/bbmc.html) for details. BBMC controls
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the FT2232H over USB through libftdi. It can reset or erase an
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mc13224v. To erase:
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bbmc -l redbee-econotag erase
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Then to flash just the MAC address you need to build flasher from
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libmc1322x. See:
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http://mc1322x.devl.org/libmc1322x.html
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Then to flash the MAC address you can do:
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mc1322x-load.pl -e -f flasher_redbee-econotag.bin -z -t /dev/ttyUSB1 -c 'bbmc -l redbee-econotag reset' 0x1e000,0xABC25000,0x010000C0
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+ -z to indicate you are sending a zero length binary to flasher.
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+ -e causes mc1322x-load.pl to exit when it's done, instead of
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dropping to a terminal
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The next time you run Contiki you'll get:
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loading rime address from flash.
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Rime started with address 00:50:C2:AB:C0:00:00:01
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CSMA sicslowmac, channel check rate 100 Hz, radio channel 26
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Tentative link-local IPv6 address
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fe80:0000:0000:0000:0250:c2ab:c000:0001
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Tentative global IPv6 address aaaa:0000:0000:0000:0250:c2ab:c000:0001
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N.B. for all of the bbmc commands, you'll need to use -i if you have
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more than one econotag plugged in. On most systems the indexes are
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enumerated backwards from the terminals. E.g. if you have 23 nodes
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connected, then /dev/ttyUSB1 will be on ftdi index 22 and the load
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command would be:
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mc1322x-load.pl -f foo.bin -t /dev/ttyUSB1 -c 'bbmc -l redbee-econotag -i 22 reset'
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5) Start the udp-client
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-----------------------
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Use mc1322x-load.pl to run `udp-client_redbee-econotag.bin` on the
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second econotag:
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mc1322x-load.pl -f udp-client_redbee-econotag.bin -t /dev/ttyUSB3
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'bbmc -l redbee-econotag -i 0'
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6) Check the border router's webpage for status
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------------------------------------------------
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The RPL border-router serves a webpage that displays the known
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neighbors and the known routes to all the node on the DAG. In firefox,
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you can type in the following to go to a IPv6 address:
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http://[aaaa:0000:0000:0000:0250:c2ff:fea8:c266]
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#### Neighbors
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fe80::250:c2ff:fea8:cbf4
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#### Routes
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aaaa::250:c2ff:fea8:cbf4/128 (via fe80::250:c2ff:fea8:cbf4)
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7) Ping6 all the nodes
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----------------------
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After a short time, once the DAG forms to a node, you should see a
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route appear on the border-router's status page. You can ping this
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node from the computer running 'tunslip6'
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ping6 aaaa::250:c2ff:fea8:cbf4
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A successful ping shows that both a downward and upward route has
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formed.
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8) That's it!
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-------------
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Now go mesh and stuff.
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