Introduction to exercises

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Introduction to exercises

• Kista, Sweden
• 26-27 March 2007

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Exercise 1

• TCP server for sensor network interaction

The server
PC
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Exercise 1 (contd.)

• TCP server parses commands, sends to network
• Entire network runs the application
• Only the server has IP access
• Use trickle to send commands to network
• Begin with minimal-net, continue with netsim
• Run on Sky testbed

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Exercise 2

• Address-free data collection protocol

The sink
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Exercise 2 (contd.)

• Two separate activities
• Setup collection tree
• Collect data
• Current code
• uibc for collection tree setup
• ruc for data collection

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Exercise 2 (contd.)

• Exercise
• Use uabc for collection tree setup
• Use uabc for data collection
• Develop in cooja or netsim
• Run on Sky testbed

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Exercise 3

• Low-level packet driver
• The button is the input device
• The LEDs is the output device
• Press the button 3 times, create 3-byte packet,
  send to Rime
• Blink LED 3 times for a 3-byte packet
• Work in native first, move to sky quickly

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Exercise 4

• Power save radio sleep cycle in Rime
• Turn the radio on and off in intervals to save
  power
• Must be on to let nodes communicate
• Queue packets when radio is off
• Work in cooja or netsim. Test on Sky boards

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Exercise 4 (contd.)

• Simulate radio being off with variable
• if(radio_is_off) drop() else handle()
• Send packets with abc_send()
• Makes it possible to test
• Use ctimer for timing
• Not accurate, ideally rtimer should be used
• But does not currently work

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Now Lunch

• Get cupons, go down to level 2
• Follow SICSers
• We will lock this room
• Need a SICSer to enter
• My phone number is 46 8 633 1614
• After lunch
• (1300 Help with installation of tools)
• 1330 Hands-on programming session
• 1700 Demos, posters
• 1900 Dinner