110 lines
3.9 KiB
Markdown
110 lines
3.9 KiB
Markdown
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JSON ws
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=======
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Short description on how to set-up a sensor network for global IPv6 addresses.
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NOTE: this assumes that you do not have a native IPv6 connection.
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You will need:
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- PC with Ubuntu (Linux) - 11 or 12 versions
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- A node for the RPL-Border-Router (examples/ipv6/rpl-border-router)
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- A node for the json webservice (examples/ipv6/json-ws)
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Set-up IPv6 tunnel and Border Router
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------------------------------------
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1. Ensure that you have gogo6c installed.
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sudo apt-get install gogoc
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2. Register an account at gogo6 and Freenet6 (http://www.gogo6.com).
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The account at Freenet6 is needed by the gogo6c client.
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3. Edit the gogoc.conf and set your own Freenet6 user and password by
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changing the lines with "userid" and "passwd".
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4. Start gogoc at command line
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cd contiki/examples/ipv6/json-ws
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sudo gogoc -f gogoc.conf -n
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This will print your prefix - TSP_PREFIX. In my case
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TSP_PREFIX=2001:05c0:1517:e400 (prefixlen is 56).
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5. Connect one of the nodes to the PC (via USB or serial) and program
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it with the RPL-border-router (assumes Z1 node).
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cd contiki/examples/ipv6/rpl-border-router
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make DEFINES=DEFINES=NETSTACK_RDC=nullrdc_driver,NULLRDC_CONF_802154_AUTOACK=1 TARGET=z1 border-router.upload
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6. Run tunslip6 which will forward IP from the RPL network to the IPv6 tunnel
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(and to the Internet).
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cd contiki/examples/ipv6/rpl-border-router
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make connect-router PREFIX=<TSP_PREFIX>::1/64
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When you start this you should get a printout from the border-router
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which give you the IPv6 address of it.
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Server IPv6 addresses:
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2001:05c0:1517:e400:c30c::10a
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fe80::c30c:0:0:10a
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7. Browse using Mozilla Firefox (or any other browser) to the IPv6 address
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given by the border router. This will show you the list of other nodes
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connected to the RPL network.
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http://[2001:05c0:1517:e400:c30c::10a]/
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NOTE: this is a global IPv6 address so it should also be reachable from
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any machine on the Internet.
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Configuration of COSM submission
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--------------------------------
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1. Register a COSM account at https://cosm.com/
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Set-up a feed and create an API key for the feed.
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2. Program the sensor node with (assumes Z1)
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cd contiki/examples/ipv6/json-ws
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make websense-z1.upload WITH_COSM=1 TARGET=z1
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3. Check the IPv6 address of the node via the RPL-border router or by looking
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at printouts when booting (make login TARGET=z1)
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4. You need to configure the node to push data to the COSM feed and this can be
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done in several ways. For convenience a Python script is included that
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pushes the configuration to the nodes.
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Edit the file 'setcosm.py' and replace "<your-key>" and "<your-feed>" with
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your COSM API key and COSM feed id. You can then use this Python script to
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configure your nodes.
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This is an example that configures the node with IP address
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2001:05c0:1517:e400:c30c::10b to push data to the COSM feed with stream 1:
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cd contiki/examples/ipv6/json-ws
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./setcosm.py [2001:05c0:1517:e400:c30c::10b] 1
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Another way to configure the nodes is to use a REST add-on for the web
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browser to post a COSM configuration to the node. "REST Client" for Mozilla
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Firefox is an example of such add-on.
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POST a JSON expression to your node with the following data: This assumes
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that you have the feed with id 55180 and want to post to stream 1 in that
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feed. The field 'appdata' should be set to the API key you created at the
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COSM web site for the feed.
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{
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"host":"[2001:470:1f10:333::2]",
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"port":80,
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"path":"/v2/feeds/55180/datastreams/1",
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"appdata":"<insert your COSM API key>",
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"interval":120,
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"proto":"cosm"
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}
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This will configure the node to periodically push temperature data every
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other minute. You can use GET to retrieve the data to se that the node has
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been successfully configured (the COSM API key will be visualized as a
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number of stars).
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