EndPoint

Motes in an OpenWSN network publish data to IPv6 addresses, usually over UDP, usually using CoAP formatting. An endPoint is a (new) program which you can run on the destination computer, and which parses and publishes the data it receives from the motes.

It is pure Python and lives at https://github.com/openwsn-berkeley/openwsn-sw/tree/develop/software/openEndPoint.

The goal of the EndPoint is to:

• listen for packet, typically on a UDP port
• the data gets timestamped, and passed to a parser
• the parsed packet gets passed to a list of publishers
• each publisher publishes the data at it wants

Publication can be:

• print on screen
• log to file
• present in JSON format as a web service
• log to Google spreadsheet
• tweet
• SMS
• etc.

An endPoint is assembled by choosing a listener, a parser and a number of publishers. Examples are:

• EpTestCli.py consists of:
  • a dummy listener which (virtually) receives a 10-byte packet every second
  • a parser which considers the entire UDP payload is a single field
  • a publisher which writes to screen
• EpUdpRawCli.py consists of:
  • a listener which listens to UDP port 5683
  • a parser which considers the entire UDP payload is a single field
  • a publisher which writes to screen

The wish list for the endPoints is infinite:

• a parser specific for CoAP
• a web.py based publisher which presents the data as JSON
• a D3js-based web visualization of that data
• etc.

If you get inspired and want to contribute, don't hesitate to contact Thomas Watteyne!